chore: iframe 的 src 支持非纯变量的数据映射 Closes #2939 (#2943)

docs/zh-CN/components/iframe.md

@@ -28,11 +28,11 @@ order: 51
 {
   "type": "page",
   "data": {
-    "iframeSrc": "https://gitee.com/baidu/amis"
+    "iframeSrc": "baidu/amis"
   },
   "body": {
     "type": "iframe",
-    "src": "${iframeSrc}",
+    "src": "https://gitee.com/${iframeSrc}",
     "height": 300
   }
 }

docs/zh-CN/extend/i18n.md

@@ -42,7 +42,7 @@ let amisScoped = amis.embed(
 
 如果是其它语言，比如目前德语，需要单独引入文件
 
-```html
+```
 <script src="sdk.js"></script>
 <script src="locale/de-DE.js"></script>
 <script type="text/javascript">

src/renderers/IFrame.tsx

@@ -6,7 +6,7 @@ import {ScopedContext, IScopedContext} from '../Scoped';
 import {buildApi, isApiOutdated} from '../utils/api';
 import {BaseSchema, SchemaUrlPath} from '../Schema';
 import {ActionSchema} from './Action';
-import {isPureVariable, resolveVariableAndFilter} from '../utils/tpl-builtin';
+import {dataMapping} from '../utils/tpl-builtin';
 
 /**
  * IFrame 渲染器
@@ -161,9 +161,7 @@ export default class IFrame extends React.Component<IFrameProps, object> {
       ...style
     };
 
-    if (isPureVariable(src)) {
-      src = resolveVariableAndFilter(src, data, '| raw');
-    }
+    src = dataMapping(src, data);
 
     const finalSrc = src ? buildApi(src, data).url : undefined;