ant-design-vue/components/form/demo/dynamic-form-item.vue

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2018-05-06 10:32:40 +00:00
<cn>
#### 动态增减表单项
动态增加减少表单项
</cn>
<us>
#### Dynamic Form Item
Add or remove form items dynamically.
</us>
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<script>
import { Form } from 'ant-design-vue'
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let uuid = 0
const DynamicFieldSet = {
methods: {
remove (k) {
const { form } = this
// can use data-binding to get
const keys = form.getFieldValue('keys')
// We need at least one passenger
if (keys.length === 1) {
return
}
// can use data-binding to set
form.setFieldsValue({
keys: keys.filter(key => key !== k),
})
},
add () {
const { form } = this
// can use data-binding to get
const keys = form.getFieldValue('keys')
const nextKeys = keys.concat(uuid)
uuid++
// can use data-binding to set
// important! notify form to detect changes
form.setFieldsValue({
keys: nextKeys,
})
},
handleSubmit (e) {
e.preventDefault()
this.form.validateFields((err, values) => {
if (!err) {
console.log('Received values of form: ', values)
}
})
},
},
render () {
const { getFieldDecorator, getFieldValue } = this.form
const formItemLayout = {
labelCol: {
xs: { span: 24 },
sm: { span: 4 },
},
wrapperCol: {
xs: { span: 24 },
sm: { span: 20 },
},
}
const formItemLayoutWithOutLabel = {
wrapperCol: {
xs: { span: 24, offset: 0 },
sm: { span: 20, offset: 4 },
},
}
getFieldDecorator('keys', { initialValue: [] })
const keys = getFieldValue('keys')
const formItems = keys.map((k, index) => {
return (
<a-form-item
{...{ props: (index === 0 ? formItemLayout : formItemLayoutWithOutLabel) }}
label={index === 0 ? 'Passengers' : ''}
required={false}
key={k}
>
{getFieldDecorator(`names[${k}]`, {
validateTrigger: ['onChange', 'onBlur'],
rules: [{
required: true,
whitespace: true,
message: "Please input passenger's name or delete this field.",
}],
})(
<a-input placeholder='passenger name' style={{ width: '60%', marginRight: '8px' }} />
)}
{keys.length > 1 ? (
<a-icon
class='dynamic-delete-button'
type='minus-circle-o'
disabled={keys.length === 1}
onClick={() => this.remove(k)}
/>
) : null}
</a-form-item>
)
})
return (
<a-form onSubmit={this.handleSubmit}>
{formItems}
<a-form-item {...{ props: formItemLayoutWithOutLabel }}>
<a-button type='dashed' onClick={this.add} style={{ width: '60%' }}>
<a-icon type='plus' /> Add field
</a-button>
</a-form-item>
<a-form-item {...{ props: formItemLayoutWithOutLabel }}>
<a-button type='primary' htmlType='submit'>Submit</a-button>
</a-form-item>
</a-form>
)
},
}
export default Form.create()(DynamicFieldSet)
</script>
<style>
.dynamic-delete-button {
cursor: pointer;
position: relative;
top: 4px;
font-size: 24px;
color: #999;
transition: all .3s;
}
.dynamic-delete-button:hover {
color: #777;
}
.dynamic-delete-button[disabled] {
cursor: not-allowed;
opacity: 0.5;
}
</style>
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