中继片段变量

Question

链接Github问题: https ://github.com/facebook/relay/issues/1218

我们遇到了Relay的奇怪行为.我会尽力解释我能做的最好的事情.

因此,我们有一个"主"中继容器,用于获取相应商店的数据,还包括Ticket容器和片段.故障单容器呈现具有过滤和排序的自定义表.所以你可以看到StoreFrom组件中的StoreTicketList容器导入所有必需的道具都像Store片段一样传递.

当您尝试过滤StoreList Ticket时会出现问题,我的意思是设置过滤器或排序中继变量.你会收到这个错误:

警告:RelayContainer:组件TicketList使用与用于获取片段的变量不同的变量进行渲染Store.片段是使用变量获取的{"first":5,"after":null,"last":null,"before":null,"sort":null,"filter":null},但是使用变量进行渲染{"first":5,"after":null,"last":null,"before":null,"sort":null,"filter":{"authorAccount":{"email":{"__e":"wrongEmail@email.com"}}}}.这可以指示两种可能性之一: - 父级在查询中设置正确的变量TicketList.getFragment('Store', {...})- 但在渲染组件时没有传递相同的变量.一定要通过将它们作为props传递给组件来告诉组件使用哪些变量:<TicketList ... first={...} after={...} last={...} before={...} sort={...} filter={...} />. - 您故意将虚假数据传递给此组件,在这种情况下忽略此警告.

但是那些过滤器/排序变量在StoreTicketList上并且它们不会从父容器传递到子容器,就像在这种情况下将容器存储到StoreListTicket容器一样.

export class StoreForm extends React.Component {

  constructor(props) {
    super(props);

    const { Viewer: { store } } = props;

    this.state = {
      number: store && store.number !== null ? store.number : '',
    };
  }

  handleInsert = (model) => {
    console.log('Form mutation model : ', model);
  };

  render() {
    const { Viewer, relay: { variables: { update } } } = this.props;
    return (
      <div>
        <Form>
          <FormTitle title='Store Info' />
          <FormBody>
            <TextField
              required
              fullWidth
              name='number'
              value={this.state.number}
              floatingLabelText='Number'
            />
            <StoreTicketList Store={this.props.Viewer.store} />
          </FormBody>
        </Form>
      </div>
    );
  }
}

StoreForm容器(主容器):

export default Relay.createContainer(StoreForm, {
  initialVariables: {
    id: null,
    update: false
  },
  prepareVariables({ id = null }) {
    return { id, update: (id !== null) };
  },
    fragments: {
        Viewer: (variables) => Relay.QL`
      fragment on Viewer {
        store(id: $id) @include(if: $update) {
          id,
          number
          ${StoreTIcketList.getFragment('Store')}
        }
      }
    `
    }
});

票务容器:

export const StoreTicketList = Relay.createContainer(TicketList, {
  initialVariables: {
    first: 5,
    after: null,
    last: null,
    before: null,
    sort: null,
    filter: null
  },
    fragments: {
        Store: () => Relay.QL`
      fragment on Store {
        ticketConnection(first: $first, after: $after, last: $last, before: $before, sort: $sort, filter: $filter) {
          count,
          pageInfo {
            hasNextPage,
            hasPreviousPage,
            startCursor,
            endCursor
          },
          edges{
            node{
              created,
              subject
            }
          }
        }
      }
    `
    }
});

我们已经构建了自己的连接表HOC组件,为每个容器呈现表.在此组件中还有使用的排序和过滤功能this.props.relay.setVariables().因此,StoreListTicket呈现为ConnectionTable,它向下传递中继prop对象,如果用户单击表colum头,组件将生成排序对象数组.

function connectionTableHOC(ComposedComponent) {

  class EnhanceTable extends React.Component {

    constructor(props) {
     super(props);
    }

    sortHandler = (sortArray) => {
     const { relay, relay: { variables } } = this.props;

     relay.setVariables({
       first: variables.first || variables.last,
       after: null,
       last: null,
       before: null,
       sort: sortArray
     });
   };

   filterHandler = (filterObj) => {
     const { relay, relay: { variables } } = this.props;

     relay.setVariables({
      first: variables.first || variables.last,
      after: null,
      last: null,
      before: null,
      filter: filterObj
    });
  };

  render() {
    return <ComposedComponent {...this.props} />;
  }
}

Answer 1

事实证明你需要做两件事:

首先,将道具传递到组件中,如Joe Savona所述.我正在使用react-relay-router,所以对我来说这是添加这一行的问题

<Route path="interviews">
  <IndexRoute component={InterviewsList} queries={ViewerQuery} />
  <Route path=":id" component={InterviewSession} queries={NodeViewerQuery}
    render={({ props }) => props ? <InterviewSession {...props} /> : <Loading />}/> // <--- this line
</Route>

其次,必须将变量的值注入getFragment函数调用,如下所示:

fragments: {
    Viewer: (variables) => Relay.QL`
  fragment on Viewer {
    store(id: $id) @include(if: $update) {
      id,
      number
      ${StoreTIcketList.getFragment('Store', {... variables})} // <---- this thing!
    }
  }
`
}

请注意,如果您在getFragment根查询中使用,variables则将是参数二:

const NodeViewerQuery = {
  node: (component, variables) => Relay.QL`query { // <---- extra "component" argument
    node(id: $id) {
      ${component.getFragment('node', {...variables})}
    }
  }`,

(这个答案来自https://github.com/facebook/relay/issues/1218)