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level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/layout.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>布局原理</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/page.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>页面渲染</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/coupling.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>联动原理</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link is-active has-active" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/code-block.html" aria-current="page" data-v-cab05059><!--[--><p class="text" data-v-cab05059>代码块</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/data-source.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>数据源</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/history-list.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>历史记录面板</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/tmagic-form.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>@tmagic/form</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/advanced/prop-form-validate.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>属性配置表单校验联动</p><!--]--></a><!----></div><!----></div><!--]--></li></ul></section></div><div class="no-transition group" data-v-e65c073a><section class="VPSidebarItem level-0" data-v-e65c073a data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><h2 class="text" data-v-cab05059>教程</h2><!----></div><ul class="items" data-v-cab05059><li data-v-cab05059><!--[--><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/tutorial/" data-v-cab05059><!--[--><p class="text" data-v-cab05059>写在前面</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/tutorial/hello-world.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>1.Hello World</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/tutorial/runtime.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>2.Runtime</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-cab05059><div class="item" data-v-cab05059><div class="indicator" data-v-cab05059></div><a class="VPLink link link" href="/tmagic-editor/docs/guide/tutorial/render.html" data-v-cab05059><!--[--><p class="text" data-v-cab05059>3.DSL解析渲染</p><!--]--></a><!----></div><!----></div><!--]--></li></ul></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-440dbbdf data-v-9677ef77><div class="VPDoc has-sidebar has-aside" data-v-9677ef77 data-v-5a9131ba><!--[--><!--]--><div class="container" data-v-5a9131ba><div class="aside" data-v-5a9131ba><div class="aside-curtain" data-v-5a9131ba></div><div class="aside-container" data-v-5a9131ba><div class="aside-content" data-v-5a9131ba><div class="VPDocAside" data-v-5a9131ba data-v-94896f55><!--[--><!--]--><!--[--><!--]--><nav aria-labelledby="doc-outline-aria-label" class="VPDocAsideOutline" data-v-94896f55 data-v-8d793e1b><div class="content" data-v-8d793e1b><div class="outline-marker" data-v-8d793e1b></div><div aria-level="2" class="outline-title" id="doc-outline-aria-label" role="heading" data-v-8d793e1b>On this page</div><ul class="VPDocOutlineItem root" data-v-8d793e1b data-v-c684cb5d><!--[--><!--]--></ul></div></nav><!--[--><!--]--><div class="spacer" data-v-94896f55></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--]--></div></div></div></div><div class="content" data-v-5a9131ba><div class="content-container" data-v-5a9131ba><!--[--><!--]--><main class="main" data-v-5a9131ba><div style="position:relative;" class="vp-doc _tmagic-editor_docs_guide_advanced_code-block" data-v-5a9131ba><div><h1 id="代码块" tabindex="-1">代码块 <a class="header-anchor" href="#代码块" aria-label="Permalink to “代码块”">​</a></h1><p>代码块是一种低代码能力,tmagic-editor中对组件的逻辑干预主要通过代码块来进行支持</p><h2 id="能力展示" tabindex="-1">能力展示 <a class="header-anchor" href="#能力展示" aria-label="Permalink to “能力展示”">​</a></h2><p>代码块支持的能力有</p><ul><li>1、在线编辑</li><li>2、参数定义,包括:参数类型定义</li><li>3、自动保存草稿</li><li>4、参数注释 下面将主要介绍代码块的实现原理,包含dsl结构定义,以及代码块挂载执行时机等</li></ul><h2 id="协议描述" tabindex="-1">协议描述 <a class="header-anchor" href="#协议描述" aria-label="Permalink to “协议描述”">​</a></h2><p>我们将在线编写的代码内容保存在<a href="./../advanced/js-schema.html">DSL</a>中,与app同一层级,这样的好处是代码块可以在同一活动,不同页面中实现灵活编排。 类型定义参见<a href="https://github.com/Tencent/tmagic-editor/blob/master/packages/schema/src/index.ts" target="_blank" rel="noreferrer">CodeBlockDSL</a>。</p><div class="language-javascript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">javascript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[{</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> id: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">123456</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> type: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;app&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> items: [{</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> id: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">222222</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> type: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;page&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> items: [{</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> id: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">333</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> type: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;comp-A&#39;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }]</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }],</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> codeBlocks: {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> code_123: {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> name: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;代码块名称&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#B392F0;"> content</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">: ()</span><span style="--shiki-light:#c62739;--shiki-dark:#F97583;">=&gt;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">{},</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> params: [{</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> name: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;参数1&#39;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }]</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">}]</span></span></code></pre></div><p>在页面中创建代码块也就是会将新的代码内容添加到DSL中的codeBlocks对象并保存下来,这里涉及的逻辑可以参见CodeBlock类中的<a href="https://github.com/Tencent/tmagic-editor/blob/c143a5f7670ae61d80c1a2cfcc780cfb5259849d/packages/editor/src/services/codeBlock.ts#L107" target="_blank" rel="noreferrer">setCodeDslById</a>方法。 并且可以在编辑器左侧的“代码块”tab下看到当前活动的代码块列表 <img src="/tmagic-editor/docs/code-block.png" alt="代码块列表"></p><h2 id="组件绑定" tabindex="-1">组件绑定 <a class="header-anchor" href="#组件绑定" aria-label="Permalink to “组件绑定”">​</a></h2><p>代码块的初衷是为了实现对组件逻辑的在线干预(代码执行的时机平台提供了组件created, mounted两个钩子),因此我们需要将创建的代码与组件进行关联。 <img src="https://vip.image.video.qpic.cn/vupload/20230228/4a34a11677585505930.png" alt="组件绑定代码块"> 选中组件之后,在组件配置-高级tab下需要支持下拉选择代码块,以及代码参数的输入。由于每一个组件绑定代码块的需求都是相同的,因此这一部分我们可以抽出为公共的表单配置,相关的逻辑处理在<a href="https://github.com/Tencent/tmagic-editor/blob/master/packages/editor/src/utils/props.ts" target="_blank" rel="noreferrer">prop文件</a>中,我们在高级tab下统一添加了名为created和mounted两个配置项,表单组件使用了自定义的&#39;code-select&#39;。前面已经提过,表单组件会按照type字段来进行渲染,即 :is=&quot;${type}&quot;,<a href="https://github.com/Tencent/tmagic-editor/blob/c143a5f7670ae61d80c1a2cfcc780cfb5259849d/packages/editor/src/fields/CodeSelect.vue" target="_blank" rel="noreferrer">CodeSelect</a>组件是在editor中自定义的</p><p>完成绑定的动作实质就是在组件配置中增加与代码块的映射关系</p><div class="language-javascript"><button title="Copy code" data-copied="Copied" class="copy"></button><span class="lang">javascript</span><pre class="shiki shiki-themes github-light github-dark" style="--shiki-light:#24292e;--shiki-dark:#e1e4e8;--shiki-light-bg:#fff;--shiki-dark-bg:#24292e;" tabindex="0" dir="ltr"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">[</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> id: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;111&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> type: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;comp_A&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> created: {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> hookType: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;code&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> hookData: [</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> codeId: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;code_123&#39;</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> params: {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> age: </span><span style="--shiki-light:#005CC5;--shiki-dark:#79B8FF;">12</span><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">,</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> studentName: </span><span style="--shiki-light:#032F62;--shiki-dark:#9ECBFF;">&#39;lisa&#39;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> ]</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;"> }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#E1E4E8;">]</span></span></code></pre></div><h2 id="代码内容注入与执行" tabindex="-1">代码内容注入与执行 <a class="header-anchor" href="#代码内容注入与执行" aria-label="Permalink to “代码内容注入与执行”">​</a></h2><p>在实现代码块创建和绑定操作之后,DSL已经包含了代码块执行所需的所有信息,接下来我们在页面加载时对代码块进行解析,并在适当的时机运行。</p><p>由于代码块的执行时机为组件created,mounted,因此触发执行的动作需要在runtime中完成,对于VUE3来说,我们在组件对应的生命周期去触发就可以了,react则需要在类似的时间点去触发,详细请参见 runtime 相关源码(参考 <a href="https://github.com/Tencent/tmagic-editor/tree/master/runtime" target="_blank" rel="noreferrer">runtime 目录</a>下的 <code>vue-runtime-help</code> 与 <code>react-runtime-help</code>)</p><p>接收事件的动作是在<a href="https://github.com/Tencent/tmagic-editor/blob/c143a5f7670ae61d80c1a2cfcc780cfb5259849d/packages/core/src/Node.ts" target="_blank" rel="noreferrer">Core</a>中完成的,请记得前面提到过Core主要负责对组件进行跨框架管理与一些通用复杂逻辑的实现,触发时机各个框架不同,但接收事件并执行代码块的逻辑与框架无关。<a href="https://github.com/Tencent/tmagic-editor/blob/c143a5f7670ae61d80c1a2cfcc780cfb5259849d/packages/core/src/Node.ts#L159" target="_blank" rel="noreferrer">Core/Node 中的 <code>listenLifeSafe</code></a>会对生命周期事件进行监听,并根据组件绑定的代码块ID拿到具体的代码内容,然后执行。在执行调用时我们以 <code>{ app, params }</code> 的形式传入了两个参数,其中 <code>app</code> 包含了全局的变量,<code>params</code> 为组件绑定时针对代码块传入的参数。</p><p>至此,我们就完成了代码块创建-绑定-注入-运行。与代码块功能相关的UI界面中我们也提供了丰富的插槽供开发者扩展,相关源码请见<a href="https://github.com/Tencent/tmagic-editor/tree/master/packages/editor/src/layouts/sidebar/code-block" target="_blank" rel="noreferrer">sidebar/codeBlock</a>。</p><h2 id="代码块界面展示" tabindex="-1">代码块界面展示 <a class="header-anchor" href="#代码块界面展示" aria-label="Permalink to “代码块界面展示”">​</a></h2><p>侧边栏的代码块列表可以查看当前创建的代码块,以及每个代码块绑定的组件,点击代码块下方展示的组件icon可以在画布中选中该组件 <img src="/tmagic-editor/docs/code-block-list.png" alt="代码块列表"></p><p>代码块编辑面板,可以在这里编写代码内容,申明参数 <img src="https://vip.image.video.qpic.cn/vupload/20230228/1fd2e11677637006239.png" alt="代码块编辑面板"></p><p>组件高级tab下绑定代码块,可以输入参数值,查看注释,打开代码编辑面板 <img src="https://vip.image.video.qpic.cn/vupload/20230301/b2c8431677637119126.png" alt="绑定代码块"></p><p>保存后点击预览,可以看到在控制台打出了我们打印的日志内容 <img src="https://vip.image.video.qpic.cn/vupload/20230301/672f8a1677637682103.png" alt="预览"></p></div></div></main><footer class="VPDocFooter" data-v-5a9131ba data-v-0e42eeea><!--[--><!--]--><!----><nav class="prev-next" aria-labelledby="doc-footer-aria-label" data-v-0e42eeea><span class="visually-hidden" id="doc-footer-aria-label" data-v-0e42eeea>Pager</span><div class="pager" data-v-0e42eeea><a class="VPLink link pager-link prev" href="/tmagic-editor/docs/guide/advanced/coupling.html" data-v-0e42eeea><!--[--><span class="desc" data-v-0e42eeea>Previous page</span><span class="title" data-v-0e42eeea>联动原理</span><!--]--></a></div><div class="pager" data-v-0e42eeea><a class="VPLink link pager-link next" href="/tmagic-editor/docs/guide/advanced/data-source.html" data-v-0e42eeea><!--[--><span class="desc" data-v-0e42eeea>Next page</span><span class="title" data-v-0e42eeea>数据源</span><!--]--></a></div></nav></footer><!--[--><!--]--></div></div></div><!--[--><!--]--></div></div><footer class="VPFooter has-sidebar" data-v-440dbbdf data-v-2daa7712><div class="container" data-v-2daa7712><p class="message" data-v-2daa7712>Powered by 腾讯视频会员平台技术中心</p><p class="copyright" data-v-2daa7712>Copyright (C) 2025 Tencent.</p></div></footer><!--[--><!--]--></div></div>
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