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zent-form

v2.1.0

Published

Zent 表单组件

Downloads

24

Readme

zent-form

表单组件

API

ZentForm.Form

对于html中form元素的一个简单封装,提供默认的className

| 参数 | 说明 | 类型 | 默认值 | 是否必填 | |------|------|------|--------|--------| | className | 自定义额外类名 | string | '' | 否 | | prefix | 自定义前缀 | string | 'zent' | 否 | | horizontal | 水平排列布局 | boolean | false | 否 | | inline | 行内排列布局 | boolean | false | 否 | | onSubmit | 表单提交回调 | Function(e:Event) | function() {} | 否 | | style | 内联样式 | object | null | 否 |

ZentForm.createForm(options)(FormComponent)

使用方式如下:

class FormComponent extends React.Component {
  render() {
    return (
      <Form>
        // 各种表单元素
        <Field
          name="interest"
          value={['eat', 'sleep']}
          component={(props) => (
            <CheckboxGroup {...props}>
              <Checkbox value="eat">吃饭</Checkbox>
              <Checkbox value="sleep">睡觉</Checkbox>
              <Checkbox value="wash">洗澡</Checkbox>
            </CheckboxGroup>
          )}
          validations={{
            // 直接在validations中定义校验方法就只能接收到所有表单元素值values和当前元素值value两个参数
            validInterest(values, value) {
              if (value.length > 0) return true
            }
          }}
          validationErrors={{
            validInterest: '至少选择一项'
          }}
        />
        <Field
          name="a"
          type="number"
          component={InputField}
          label="a"
          value="2"
          validations={{ 
            required: true, 
            // 使用自定义校验方法时可以额外传入参数
            isMoreThan: 'b'
          }}
          validationErrors={{ 
            required: '不能为空', 
            isMoreThan: 'a必须大于b' 
          }}
        />
        <Field
          name="b"
          type="number"
          component={InputField}
          label="b"
          value="3"
        />
      </Form>
    )
  }
}

FormComponent = Form.createForm({
  // 在这里定义的校验方法可以在定义validations时额外接收一个参数
  formValidations: {
    isMoreThan(values, value, otherField) {
      return Number(value) > Number(values[otherField])
    },
    ...
  }
})(FormComponent);

options 的配置项如下:

| 参数 | 说明 | 类型 | 是否必填 | |------|------|------|------| | formValidations | 用于添加自定义校验方法,通过这种方式添加的方法在validations中使用时可以传额外的参数 | object | 否 |

经过 ZentForm.createForm 包装的组件通过props添加了zenForm属性,所以原组件可以访问到 this.props.zentForm 属性,this.props.zentForm 提供的 API 如下:

| 参数 | 说明 | 类型 | |------|------|------| | getFormValues | 获取与form绑定的所有字段值 | Function() | | getFieldError | 获取field的错误信息,没有报错信息返回空 | Function(name: string) | | setFormPristine | 设置所有field的状态为非原始状态,用于在提交表单时让Field把没有显示出来的错误显示出来 | Function(isPristine: bool) | | resetFieldsValue | 把所有field的值恢复到指定值或初始状态 | Function(data: object) | | isValid | 表单的所有Field是否都通过了校验 | Function() | | isSubmitting | 表单是否正在提交 | Function() |

ZentForm.Field

| 参数 | 说明 | 类型 | 是否必填 | |------|------|------|------| | name | 表单元素名 | string | 是 | | component | 表单元素组件,可以是字符串(标准html元素名),也可以是React组件 | string / React.Component | 是 | | normalize | 格式化表单元素值 | Function(value, previousValue, nextValues, previousValues) | 否 | | validations | 定义表单元素校验方法 | object | 否 | | validationErrors | 定义表单元素检验方法对应的出错信息 | object | 否 | | value | 表单元素初始值 | any | 是 |

表单提交

form组件内部对表单提交的过程进行了一些封装,可以把异步提交的过程封装在一个function里并返回一个promise对象,组件内部会根据promise对象的执行结果分别调用onSubmitSuccess和onSubmitFail方法,同时更新isSubmitting属性。

  const sleep = ms => new Promise(resolve => setTimeout(resolve, ms))
  const submit = (values) => {
    return sleep(1000)
      .then(() => {
        console.log(values)
      })
  }

  class SubmitForm extends React.Component {
    render() {
      const { zentForm, handleSubmit } = this.props
      const isSubmitting = zentForm.isSubmitting()

      return (
        <Form onSubmit={handleSubmit(submit)}>
          ...
          <button type="submit">{isSubmitting ? '提交中' : '提交'}</button>
        </Form>
      )
    }
  }

  class FormContainer extends React.Component {
    onSubmitSuccess(result) {
      ...
    }

    onSubmitFail(error) {
      ...
    }

    render() {
      return (
        <SubmitForm
          onSubmitSuccess={this.onSubmitSuccess}
          onSubmitFail={this.onSubmitFail}
        />
      )
    }
  }