[improvement] SwitchCell: support form-filed (#479)

dist/switch-cell/index.js

@@ -1,20 +1,31 @@
 Component({
+  behaviors: ['wx://form-field'],
+
   options: {
     addGlobalClass: true
   },
 
   properties: {
     title: String,
-    checked: Boolean,
     border: Boolean,
     loading: Boolean,
     disabled: Boolean,
+    checked: {
+      type: Boolean,
+      observer(value) {
+        this.setData({ value });
+      }
+    },
     size: {
       type: String,
       value: '26px'
     }
   },
 
+  attached() {
+    this.setData({ value: this.data.checked });
+  },
+
   methods: {
     onChange(event) {
       this.triggerEvent('change', event.detail);

packages/switch-cell/README.md

@@ -61,6 +61,7 @@ Page({
 
 | 参数 | 说明 | 类型 | 默认值 |
 |-----------|-----------|-----------|-------------|
+| name | 在表单内提交时的标识符 | `String` | - |
 | checked | 开关状态 | `Boolean` | - |
 | title | 左侧标题 |  `String` | `''` |
 | loading | 是否为加载状态 |  `Boolean` | `false` |

packages/switch-cell/index.js

@@ -1,20 +1,31 @@
 Component({
+  behaviors: ['wx://form-field'],
+
   options: {
     addGlobalClass: true
   },
 
   properties: {
     title: String,
-    checked: Boolean,
     border: Boolean,
     loading: Boolean,
     disabled: Boolean,
+    checked: {
+      type: Boolean,
+      observer(value) {
+        this.setData({ value });
+      }
+    },
     size: {
       type: String,
       value: '26px'
     }
   },
 
+  attached() {
+    this.setData({ value: this.data.checked });
+  },
+
   methods: {
     onChange(event) {
       this.triggerEvent('change', event.detail);