Apollo查询变量传递状态时出错

Question

错误：网络错误：响应不成功：已接收状态代码400

更新：以下是错误详细信息：

[GraphQL错误]:消息：类型为“String！”的变量“$OrderBy”用于应为“ItemorderByInput”类型的位置。位置:[object object]，[object object]，路径：未定义

尝试让ALL_ITEMS_QUERY接受orderBy变量。我是不是漏掉了什么？

import React, { Component } from "react";
import { Query } from "react-apollo";
import gql from "graphql-tag";
import styled from "styled-components";
import Item from "./Item";
import Pagination from "./Pagination";
import { perPage } from "../config";
import Sort from "./Sort";

const ALL_ITEMS_QUERY = gql`
  query ALL_ITEMS_QUERY($skip: Int = 0, $first: Int = ${perPage}, $orderBy: String!) {
    items(first: $first, skip: $skip, orderBy: $orderBy) {
      id
      title
      price
      description
      image
      largeImage
    }
  }
`;

const Center = styled.div`
  text-align: center;
`;

const ItemsList = styled.div`
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-gap: 60px;
  max-width: ${props => props.theme.maxWidth};
  margin: 0 auto;
  padding-bottom: 80px;
`;

class Items extends Component {
  state = {
    sortNew: "createdAt_ASC"
  };

  render() {
    return (
      <Center>
        <Pagination page={this.props.page} />
        <Sort />

        <Query
          query={ALL_ITEMS_QUERY}
          variables={{
            orderBy: this.state.sortNew,
            skip: this.props.page * perPage - perPage
          }}
        >
          {({ data, error, loading }) => {
            if (loading) return <p>Loading...</p>;
            if (error) return <p>Error: {error.message}</p>;
            return (
              <ItemsList>
                {data.items.map(item => (
                  <Item item={item} key={item.id} />
                ))}
              </ItemsList>
            );
          }}
        </Query>
        <Pagination page={this.props.page} />
      </Center>
    );
  }
}

export default Items;

Answer 1

ALL_ITEMS_QUERY希望orderBy是类似orderBy:createdat_asc的枚举，但您传递的是字符串orderBy:string！。要解决这个问题，请将枚举名传递给all_items_query，这样就可以动态更改orderBy。

示例如下所示

const ALL_ITEMS_QUERY = gql`
  query ALL_ITEMS_QUERY($skip: Int = 0, $first: Int = ${perPage}, $orderBy: NameOfItemsEnum) {
    items(first: $first, skip: $skip, orderBy: $orderBy) {
      id
      title
      price
      description
      image
      largeImage
    }
  }
`;

其中nameofitemsenum是在后端为枚举类型指定的名称