作者：温新

时间：2021-07-31

hi，我是温新，一名PHPer

本系列采用Laravel8.x演示。

在正式记录之前，请先调整好项目初始化的配置（如配置路由、数据库等），这里不进行记录。

第一步：配置

1）打开广播

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// config/app.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 取消注释</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">App\Providers\BroadcastServiceProvider</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,</span>

2）修改广播驱动

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// .env</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">BROADCAST_DRIVER</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">pusher</span></span>

3）配置pusher

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// .env</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">PUSHER_APP_ID</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">你的ID</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">PUSHER_APP_KEY</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">你的KEY</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">PUSHER_APP_SECRET</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">你的SECRET</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">PUSHER_APP_CLUSTER</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">ap3</span></span>

4）配置广播连接

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// config/boradcasting.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 17, 17)">'pusher'</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=></span> [</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(170, 17, 17)">'options'</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=></span> [</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 其它不变，新增如下配置</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(170, 17, 17)">'curl_options'</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=></span> [</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(0, 0, 0)">CURLOPT_SSL_VERIFYHOST</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=></span> <span style="box-sizing: border-box;color: rgb(17, 102, 68)">0</span>,</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(0, 0, 0)">CURLOPT_SSL_VERIFYPEER</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=></span> <span style="box-sizing: border-box;color: rgb(17, 102, 68)">0</span>,</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        ]</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    ],</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">],</span>

第一步：创建模型与迁移文件并生成相关表

第一步：创建模型与迁移文件

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 主题模型</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">php</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">artisan</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">make</span>:<span style="box-sizing: border-box;color: rgb(0, 0, 0)">model</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">Topic</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">-</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">a</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 主题讨论模型</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">php</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">artisan</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">make</span>:<span style="box-sizing: border-box;color: rgb(0, 0, 0)">model</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">Discussion</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">-</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">a</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">//主题与用户之间的关系表</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">php</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">artisan</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">make</span>:<span style="box-sizing: border-box;color: rgb(0, 0, 0)">migration</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">create_topic_user_table</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">--</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">create</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">topic_user</span></span>

模型关系理解：

1）用户与主题讨论是一对多关系，一个用户可以发表N次主题讨论的内容；

2）用户于主题是多对多关系；

第二步：修改迁移文

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// CreateTopicsTable 主题表迁移文件</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">Schema</span>::<span style="box-sizing: border-box;color: rgb(0, 0, 0)">create</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topics'</span>, <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> (<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Blueprint</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span>) {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">id</span>();</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">string</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'name'</span>)<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">comment</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'主题名'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">timestamps</span>();</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 主题讨论表</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">Schema</span>::<span style="box-sizing: border-box;color: rgb(0, 0, 0)">create</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'discussions'</span>, <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> (<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Blueprint</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span>) {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">id</span>();</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">unsignedInteger</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>)<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">index</span>()<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">comment</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'用户ID'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">unsignedInteger</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_id'</span>)<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">index</span>()<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">comment</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'主题ID'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">string</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'content'</span>)<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">comment</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'主题讨论内容'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">timestamps</span>();</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">});</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 用户与主题中间表</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">Schema</span>::<span style="box-sizing: border-box;color: rgb(0, 0, 0)">create</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_user'</span>, <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> (<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Blueprint</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span>) {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">id</span>();</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">unsignedInteger</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>)<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">index</span>()<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">comment</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'用户ID'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">unsignedInteger</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_id'</span>)<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">index</span>()<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">comment</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'主题ID'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$table</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">timestamps</span>();</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">});</span>

第三步：生成迁移文件

php artisan migrate

第二步：定义模型间的关系

1）定义模型关系

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// Models/User.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 用户与主题的关系</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">topics</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">belongsToMany</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Topic</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_user'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 用户与主题讨论内容的关系</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">discussions</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">hasMany</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Discussion</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// Discussion.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">protected</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$guarded</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span> [];</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 一个讨论的内容属于一个用户</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">user</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">belongsTo</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">User</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 一个主题也是属于一个用户</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">topic</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">belongsTo</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Topic</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// Topic.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">protected</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$guarded</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span> [];</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 主题与用户为多对多关系</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">users</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">belongsToMany</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">User</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_user'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 主题与主题讨论的内容为一对多关系</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">discussions</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">hasMany</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Discussion</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

2）填充数据。为了方便，手动填充数据

<span style="box-sizing: border-box;padding-right: 0.1px">// topics表</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">id  name</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(17, 102, 68)">1</span>  PHP技术讨论</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(17, 102, 68)">2</span>  Vue技术讨论</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">// topic_user表</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">id user_id topic_id</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(17, 102, 68)">1</span> <span style="box-sizing: border-box;color: rgb(17, 102, 68)">1</span>  <span style="box-sizing: border-box;color: rgb(17, 102, 68)">1</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(17, 102, 68)">2</span> <span style="box-sizing: border-box;color: rgb(17, 102, 68)">1</span>  <span style="box-sizing: border-box;color: rgb(17, 102, 68)">2</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(17, 102, 68)">3</span> <span style="box-sizing: border-box;color: rgb(17, 102, 68)">2</span>  <span style="box-sizing: border-box;color: rgb(17, 102, 68)">1</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">// users表</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">id name <span style="box-sizing: border-box;color: rgb(119, 0, 136)">password</span> email</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(17, 102, 68)">1</span> 李四    lisi<span style="box-sizing: border-box;color: rgb(0, 85, 170)">@qq.com</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(17, 102, 68)">2</span> 王五    wangwu<span style="box-sizing: border-box;color: rgb(0, 85, 170)">@qq.com</span></span>

第三步：定义路由与控制器方法

1）定义路由

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// web.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">Route</span>::<span style="box-sizing: border-box;color: rgb(0, 0, 0)">get</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic'</span>, <span style="box-sizing: border-box;color: rgb(170, 17, 17)">'TopicController@index'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">Route</span>::<span style="box-sizing: border-box;color: rgb(0, 0, 0)">get</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic/{topic}'</span>, <span style="box-sizing: border-box;color: rgb(170, 17, 17)">'TopicController@show'</span>);</span>

2）修改控制器方法

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// TopicController.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 获取主题</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">show</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Topic</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$topic</span>)</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">view</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic.show'</span>, <span style="box-sizing: border-box;color: rgb(51, 0, 170)">compact</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic'</span>)); </span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

3）修改模型方法

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(170, 85, 0)">// Models/Topic.php</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">public</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">function</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">discussions</span>()</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">$this</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">hasMany</span>(<span style="box-sizing: border-box;color: rgb(0, 0, 0)">Discussion</span>::<span style="box-sizing: border-box;color: rgb(119, 0, 136)">class</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user_id'</span>,<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'id'</span>)<span style="box-sizing: border-box;color: rgb(152, 26, 26)">-></span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">with</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'user'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span>

4）新增静态文件

文件：topic/show.blade.php

<span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">@extends</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'layouts.app'</span>)</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">@section</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'content'</span>)</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(152, 26, 26)"><</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">topic</span> :<span style="box-sizing: border-box;color: rgb(0, 0, 0)">topic</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span><span style="box-sizing: border-box;color: rgb(170, 17, 17)">"{{ </span><span style="box-sizing: border-box;color: rgb(0, 85, 170)">$topic</span> <span style="box-sizing: border-box;color: rgb(170, 17, 17)">}}"</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">></</span><span style="box-sizing: border-box;color: rgb(0, 0, 0)">topic</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(0, 0, 0)">@endsection</span></span>

第五步：改造组件

<span style="box-sizing: border-box;padding-right: 0.1px">// resources/js/components/TopicComponent.vue</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">template</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">class</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"container"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">class</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"row justify-content-center"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">class</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"col-md-8"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">h3</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span><span class="cm-meta cm-mustache" style="box-sizing: border-box;color: rgb(85, 85, 85)">{{ topic.name }}</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">h3</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">hr</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">v-for</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"dis in this.discussions"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                    <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">h3</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span><span class="cm-meta cm-mustache" style="box-sizing: border-box;color: rgb(85, 85, 85)">{{  dis.user_id }}</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">h3</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                    <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">p</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span><span class="cm-meta cm-mustache" style="box-sizing: border-box;color: rgb(85, 85, 85)">{{ dis.content }}</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">p</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">hr</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">form</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">action</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"#"</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">@submit.prevent</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"createDis"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                    <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">textarea</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">v-model</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"talk"</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">name</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">""</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">class</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"form-control"</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">cols</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"30"</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">rows</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"6"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">textarea</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                    <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">button</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">type</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"submit"</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">class</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"btn btn-primary float-right px-2 m-1"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span>发布<span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">button</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">                <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">form</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">template</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">script</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(119, 0, 136)">export</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">default</span> {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 0, 0)">props</span>:[<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'topic'</span>],</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 0, 0)">data</span> () {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 主题讨论的内容</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(0, 0, 0)">talk</span>:<span style="box-sizing: border-box;color: rgb(170, 17, 17)">''</span>,</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 数据库获取主题讨论的内容</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(0, 0, 0)">discussions</span>:[],</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    },</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 0, 0)">mounted</span>() {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 对应主题讨论的数据</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">       <span style="box-sizing: border-box;color: rgb(119, 0, 136)">this</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">discussions</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">this</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">topic</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">discussions</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    },</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    <span style="box-sizing: border-box;color: rgb(0, 0, 0)">methods</span>:{</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        <span style="box-sizing: border-box;color: rgb(0, 0, 0)">createDis</span>() {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">            <span style="box-sizing: border-box;color: rgb(119, 0, 136)">this</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">talk</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span> <span style="box-sizing: border-box;color: rgb(170, 17, 17)">''</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">        }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">    }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px">}</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">script</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span>

路由访问方式为域名/topic/1

需要注意的是，通过传入数据$topic只是把该主题数据传入了进来；在mounted中使用了discussions，该属性在$topic中是没有了，只处是通过动态属性的方式获取一对多数据，也就是Topic模型中的discussions方法，以动态属性的方式调用。

由于前面使用的是npm run watch，因此修改vue组件后会自动编译。

我是温新

每天进步一点点，就一点点