ant-design-vue/components/form/index.en-US.md

API

Form

Property	Description	Type	Default Value
form	Decorated by Form.create() will be automatically set this.form property, so just pass to form. If you use the template syntax, you can use this.$form.createForm(this, options)	object	n/a
hideRequiredMark	Hide required mark of all form items	Boolean	false
layout	Define form layout	'horizontal'|'vertical'|'inline'	'horizontal'
autoFormCreate(deprecated)	Automate Form.create, Recommended for use under the template component, and cannot be used with Form.create(). You should use $form.createForm to instead it after 1.1.9.	Function(form)
options(deprecated)	The options corresponding to Form.create(options). You should use $form.createForm to instead it after 1.1.9.	Object	{}

Events

Events Name	Description	Arguments
submit	Defines a function will be called if form data validation is successful.	Function(e:Event)

Form.create(options) | this.$form.createForm(this, options)

How to use：

Used in jsx, the usage is consistent with the React version of antd

const CustomizedForm = {};

CustomizedForm = Form.create({})(CustomizedForm);

Maintain an ref for wrapped component instance, use wrappedComponentRef.

Single file template usage

<template>
  <a-form :form="form" />
</template>
<script>
  export default {
    beforeCreate() {
      this.form = this.$form.createForm(this, options);
    },
  };
</script>

The following options are available:

Property	Description	Type
props	Only supports the use of Form.create({})(CustomizedForm). declare props on form(和like vue props)	{}
mapPropsToFields	Convert props to field value(e.g. reading the values from Redux store). And you must mark returned fields with Form.createFormField. If you use $form.createForm to create a collector, you can map any data to the Field without being bound by the parent component.	(props) => Object{ fieldName: FormField { value } }
name	Set the id prefix of fields under form	-
validateMessages	Default validate message. And its format is similar with newMessages's returned value	Object { [nested.path]: String }
onFieldsChange	Specify a function that will be called when the value a Form.Item gets changed. Usage example: saving the field's value to Redux store.	Function(props, fields)
onValuesChange	A handler while value of any field is changed	(props, values) => void

If the form has been decorated by Form.create then it has this.form property. this.form provides some APIs as follows:

Note: Before using getFieldsValue getFieldValue setFieldsValue and so on, please make sure that corresponding field had been registered with getFieldDecorator or v-decorator.

Method	Description	Type
getFieldDecorator	Two-way binding for form, single file template can be bound using the directive v-decorator. please read below for details.
getFieldError	Get the error of a field.	Function(name)
getFieldsError	Get the specified fields' error. If you don't specify a parameter, you will get all fields' error.	Function([names: string[]])
getFieldsValue	Get the specified fields' values. If you don't specify a parameter, you will get all fields' values.	Function([fieldNames: string[]])
getFieldValue	Get the value of a field.	Function(fieldName: string)
isFieldsTouched	Check whether any of fields is touched by getFieldDecorator's or v-decorator's options.trigger event	(names?: string[]) => boolean
isFieldTouched	Check whether a field is touched by getFieldDecorator's or v-decorator's options.trigger event	(name: string) => boolean
isFieldValidating	Check if the specified field is being validated.	Function(name)
resetFields	Reset the specified fields' value(to initialValue) and status. If you don't specify a parameter, all the fields will be reset.	Function([names: string[]])
setFields	Set value and error state of fields.	({   [fieldName]: {value: any, errors: [Error] } }) => void
setFieldsValue	Set the value of a field.	Function({ [fieldName]: value })
validateFields	Validate the specified fields and get theirs values and errors. If you don't specify the parameter of fieldNames, you will validate all fields.	(   [fieldNames: string[]],   [options: object],   callback(errors, values) ) => void
validateFieldsAndScroll	This function is similar to validateFields, but after validation, if the target field is not in visible area of form, form will be automatically scrolled to the target field area.	same as validateFields

validateFields/validateFieldsAndScroll

const {
  form: { validateFields },
} = this;
validateFields((errors, values) => {
  // ...
});
validateFields(['field1', 'field2'], (errors, values) => {
  // ...
});
validateFields(['field1', 'field2'], options, (errors, values) => {
  // ...
});

Method	Description	Type	Default
options.first	If true, every field will stop validation at first failed rule	boolean	false
options.firstFields	Those fields will stop validation at first failed rule	String[]	[]
options.force	Should validate validated field again when validateTrigger is been triggered again	boolean	false
options.scroll	Config scroll behavior of validateFieldsAndScroll, more: dom-scroll-into-view's config	Object	{}

Callback arguments example of validateFields

• errors:

  {
    "userName": {
      "errors": [
        {
          "message": "Please input your username!",
          "field": "userName"
        }
      ]
    },
    "password": {
      "errors": [
        {
          "message": "Please input your Password!",
          "field": "password"
        }
      ]
    }
  }
  

• values:

  {
    "userName": "username",
    "password": "password",
  }
  

Form.createFormField

To mark the returned fields data in mapPropsToFields, demo.

this.form.getFieldDecorator(id, options) and v-decorator="[id, options]"

After wrapped by getFieldDecorator or v-decorator, value(or other property defined by valuePropName) onChange(or other property defined by trigger) props will be added to form controls，the flow of form data will be handled by Form which will cause:

1. You shouldn't use onChange to collect data, but you still can listen to onChange(and so on) events.
2. You cannot set value of form control via value defaultValue prop, and you should set default value with initialValue in getFieldDecorator or v-decorator instead.
3. You shouldn't call v-model manually, please use this.form.setFieldsValue to change value programmatically.

Special attention

1. getFieldDecorator and v-decorator can not be used to decorate stateless component.
2. you can't use getFieldDecorator and v-decorator in stateless component: https://vuejs.org/v2/api/#functional

getFieldDecorator(id, options) and v-decorator="[id, options]" parameters

Property	Description	Type	Default Value
id	The unique identifier is required. support nested fields format.	string
options.getValueFromEvent	Specify how to get value from event or other onChange arguments	function(..args)	reference
options.getValueProps	Get the component props according to field value.	function(value): any	reference
options.initialValue	You can specify initial value, type, optional value of children node. (Note: Because Form will test equality with === internally, we recommend to use variable as initialValue, instead of literal)		n/a
options.normalize	Normalize value to form component, a select-all example	function(value, prevValue, allValues): any	-
options.preserve	Keep the field even if field removed	boolean	false
options.rules	Includes validation rules. Please refer to "Validation Rules" part for details.	object[]	n/a
options.trigger	When to collect the value of children node	string	'change'
options.validateFirst	Whether stop validate on first rule of error for this field.	boolean	false
options.validateTrigger	When to validate the value of children node.	string|string[]	'change'
options.valuePropName	Props of children node, for example, the prop of Switch is 'checked'.	string	'value'

Form.Item

Note: If Form.Item has multiple children that had been decorated by getFieldDecorator or v-decorator, help and required and validateStatus can't be generated automatically.

Property	Description	Type	Default Value
colon	Used with label, whether to display : after label text.	boolean	true
extra	The extra prompt message. It is similar to help. Usage example: to display error message and prompt message at the same time.	string|slot
hasFeedback	Used with validateStatus, this option specifies the validation status icon. Recommended to be used only with Input.	boolean	false
help	The prompt message. If not provided, the prompt message will be generated by the validation rule.	string|slot
label	Label text	string|slot
labelCol	The layout of label. You can set span offset to something like {span: 3, offset: 12} or sm: {span: 3, offset: 12} same as with <Col>	object
required	Whether provided or not, it will be generated by the validation rule.	boolean	false
validateStatus	The validation status. If not provided, it will be generated by validation rule. options: 'success' 'warning' 'error' 'validating'	string
wrapperCol	The layout for input controls, same as labelCol	object

Validation Rules

Property	Description	Type	Default Value
enum	validate a value from a list of possible values	string	-
len	validate an exact length of a field	number	-
max	validate a max length of a field	number	-
message	validation error message	string	-
min	validate a min length of a field	number	-
pattern	validate from a regular expression	RegExp	-
required	indicates whether field is required	boolean	false
transform	transform a value before validation	function(value) => transformedValue:any	-
type	built-in validation type, available options	string	'string'
validator	custom validate function (Note: callback must be called)	function(rule, value, callback)	-
whitespace	treat required fields that only contain whitespace as errors	boolean	false

See more advanced usage at async-validator.