104 lines
2.7 KiB
Vue
104 lines
2.7 KiB
Vue
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<cn>
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#### 表单数据存储于上层组件
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通过使用 `onFieldsChange` 与 `mapPropsToFields`，可以把表单的数据存储到上层组件。
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**注意：**
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`mapPropsToFields` 里面返回的表单域数据必须使用 `Form.createFormField` 包装。
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如果你使用`Form.create`，上层组件传递的属性，必须在`Form.create({ props: ...})`的props中声明。
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如果使用`this.$form.createForm`，你可以使用任何数据，不仅仅局限于上层组件的属性。
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</cn>
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<us>
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#### Store Form Data into Upper Component
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We can store form data into upper component.
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**Note:**
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If you use `Form.create`. You must wrap field data with `Form.createFormField` in `mapPropsToFields`.
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The properties passed by the upper component must be declared in the props of `Form.create({ props: ...})`.
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But if you use `this.$form.createForm`, You can use any data, not just the properties of the upper components.
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</us>
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<template>
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<div id="components-form-demo-global-state">
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<customized-form :username="fields.username" @change="handleFormChange" />
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<pre class="language-bash">
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{{ JSON.stringify(fields, null, 2) }}
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</pre>
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</div>
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</template>
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<script>
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const CustomizedForm = {
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props: ['username'],
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template: `
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<a-form layout='inline' :form="form">
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<a-form-item label='Username'>
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<a-input
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v-decorator="[
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'username',
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{
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rules: [{ required: true, message: 'Username is required!' }],
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}
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]"
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/>
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</a-form-item>
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</a-form>
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`,
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created() {
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this.form = this.$form.createForm(this, {
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name: 'global_state',
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onFieldsChange: (_, changedFields) => {
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this.$emit('change', changedFields);
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},
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mapPropsToFields: () => {
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return {
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username: this.$form.createFormField({
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...this.username,
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value: this.username.value,
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}),
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};
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},
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onValuesChange(_, values) {
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console.log(values);
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},
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});
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},
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watch: {
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username() {
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this.form.updateFields({
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username: this.$form.createFormField({
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...this.username,
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value: this.username.value,
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}),
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});
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},
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},
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};
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export default {
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components: {
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CustomizedForm,
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},
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data() {
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return {
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fields: {
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username: {
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value: 'benjycui',
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},
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},
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};
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},
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methods: {
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handleFormChange(changedFields) {
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console.log('changedFields', changedFields);
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this.fields = { ...this.fields, ...changedFields };
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},
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},
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};
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</script>
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<style>
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#components-form-demo-global-state .language-bash {
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max-width: 400px;
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border-radius: 6px;
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margin-top: 24px;
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}
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</style>
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