javascript - Redux 形式 - 将函数作为属性传递给字段数组给出 undefined

Question

我试图将函数作为属性从父组件传递到子 redux-form fieldArray 组件。这是具有以下功能的容器组件:

  constructor(props) {
    super(props);
    this.removePeriodCallback = this.removePeriodCallback.bind(this);
  }

  removePeriodCallback(periodeId) {
    const { formPrefix, periods} = this.props;

    this.props.reduxFormChange(
      `${formPrefix}.InfoPanel`, 'periods',
      periods.filter((e, i) => i === periodeId)
        .sort((a, b) => a.fom > b.fom),
    );
  }

我将它传递给子组件，如下所示:

 <FieldArray
      name="periods"
      component={Periods}
      props={{ removePeriodCallback: this.removePeriodCallback }}
    />

在子组件中，我尝试访问如下函数:

 export const Periods= ({ fields }) => (
  <div>
    {fields.map((fieldId, index) => {
      const toDate = fields.get(index).tom;
      const fromDate = fields.get(index).fom;
      const removePeriodCallback = this.props.removePeriodCallback;   

      return (
        <Row key={fieldId}>
          <Column>
            <div>
              <UttakPeriodeType
                toDate ={toDate }
                fromDate ={fromDate }
                removePeriodCallback={removePeriodCallback}
              />

I have also tried to deconstruct it inside arguments of the component:

    export const Periods= ({ fields, removePeriodCallback }) => (
  <div>
    {fields.map((fieldId, index) => {
      const toDate = fields.get(index).tom;
      const fromDate = fields.get(index).fom;

      return (
        <Row key={fieldId}>
          <Column>
            <div>
              <UttakPeriodeType
                toDate ={toDate }
                fromDate ={fromDate }
                removePeriodCallback={removePeriodCallback}
              />

但是，当我尝试使用 removePeriodCallback 时，两次都未定义

我做错了什么，我应该如何解决这个问题？

Answer 1

你的解构方法是正确的选择。我尝试使用 redux 表单示例，下面代码中的 somefunction 有效，该函数已通过

<FieldArray name="members" component={renderMembers} props={{ someFunction }}/>

<小时/>

const renderMembers = ({ fields, someFunction }) => (

{fields.map((member, index) => (
  <li key={index}>
    <button
      type="button"
      title="Remove Member"
      onClick={() => someFunction()}
    />

您必须检查要将函数传递到的 UttakPeriodeType 组件。