下一个 JS apollo 链接更改清除查询，必须刷新页面才能运行查询

Posted 2023-03-10

【中文标题】下一个 JS apollo 链接更改清除查询，必须刷新页面才能运行查询

【英文标题】：next JS apollo Link change clears query, have to refresh page for query to run

【发布时间】：2021-05-31 11:25:10

【问题描述】：

我正在将 Next JS 与 Apollo 一起使用，并且我有以下查询可以正常工作，但是当我从页面导航到另一个页面并返回查询不运行时，我的字段为空，我必须点击刷新填充它们。有谁知道为什么会这样。

import  useQuery, gql, useMutation  from "@apollo/client";
import  useEffect, useState  from "react";
import  v4 as uuidv4  from "uuid";
import Form from "../components/Form";
import Layout from "../components/Layout";

export const INPUT_VALUES = gql`
  query GetInputValues 
    allFormInputVals 
      data 
        name
        _id
        type
        index
      
    
  
`;

const FormBuilder = () => 
  const blankFormInput = 
    __typename: "FormInputVal",
    name: "test",
    _id: uuidv4(),
    type: "text",
  ;
  const [formState, setFormState] = useState([blankFormInput]);

  const  loading, error, data  = useQuery(INPUT_VALUES);

  useEffect(() => 
    const formData = data?.allFormInputVals?.data;
    setFormState(formData);
  , [data]);

  if (loading) return <p>Loading...</p>;

  if (error) return <p>Error: error.message</p>;

  return (
    <Layout>
      formState && <Form formState=formState setFormState=setFormState />
    </Layout>
  );
;

export default FormBuilder;

更新：这里要求的是表单组件

import  useEffect, useState  from "react";
import  useForm  from "react-hook-form";
import  useQuery, gql, useMutation  from "@apollo/client";
import  v4 as uuidv4  from "uuid";
import styled from "styled-components";
import  INPUT_VALUES  from "../pages/formBuilder";
import Link from "next/link";
import useSWR from "swr";

const ADD_INPUT_VALUES = gql`
  mutation AddInputValues($name: String!, $type: String!, $index: Int!) 
    createFormInputVal(data:  name: $name, index: $index, type: $type ) 
      name
      type
      index
      _id
    
  
`;

const UPDATE_FORM_INPUT_VAL = gql`
  mutation UpdateFormInputVal(
    $name: String!
    $type: String!
    $index: Int!
    $ID: ID!
    $arrayOrder: Int
  ) 
    updateFormInputVal(
      id: $ID
      data:  name: $name, type: $type, index: $index, arrayOrder: $arrayOrder 
    ) 
      name
      type
      index
      arrayOrder
    
  
`;

const DELETE_FORM_INPUT_VAL = gql`
  mutation DeleteFormInputVal($ID: ID!) 
    deleteFormInputVal(id: $ID) 
      name
    
  
`;

const FormStyles = styled.form`
  display: grid;
  grid-template-columns: 350px 1fr 1fr;
  label 
    //background: red;
  
  input,
  select 
    //background: aqua;
    border: 1px solid grey;
    border-top: 0;
    border-right: 0;
    border-left: 0;
  
  input[type="button"] 
    background: green;
    border: none;
    border-radius: 30px;
    color: #fff;
    padding: 15px;
    width: 200px;
    margin: 0 0 25px auto;
    &:hover 
      cursor: pointer;
    
  
  button 
    background: lightgray;
    padding: 15px;
    border: none;
    &:hover 
      cursor: pointer;
    
  
`;

const GridStyles = styled.div`
  display: grid;
  grid-row-gap: 5px;
  padding: 15px 0;
  width: 600px;
  margin: 0 auto 0 0;
  div 
    display: grid;
    grid-template-columns: 100px 1fr;
    align-items: center;
  
`;

const AddFormStyles = styled.form`
  display: grid;
  grid-template-columns: 1fr 1fr;
`;

const fetcher = (url) => fetch(url).then((r) => r.json());

export default function Form( formState, setFormState ) 
  const test = formState?.reduce((obj, item, idx) => 
    return  ...obj, [`name-$item._id`]: item.name ;
  , );

  const  register, handleSubmit, errors  = useForm( defaultValues: test );
  const 
    register: register2,
    handleSubmit: handleSubmit2,
    errors: errors2,
   = useForm();
  const [formStateVals, setFormStateVals] = useState(undefined);
  const [savingState, setSavingState] = useState(false);
  const [deletingState, setDeletingState] = useState(false);

  const  data: formEntryData, error  = useSWR("/api/data", fetcher);

  // console.log(test);

  const onSubmit = async (data) => 
    let hmm = formState.map((ok, i) => 
      //console.log(ok._id);
      var name = data[`name-$ok._id`];
      var type = data[`type-$ok._id`];
      var boogie = 
        _id: ok._id,
        name: name,
        type: type,
        index: i,
        arrayOrder: ok.arrayOrder,
      ;
      return boogie;
    );

    //1. query all formEntryData *
    //2. Grab all the submitted fields
    //3. run a series of replaces with the correct formEntryData
    //4. as well as the updateField change

    // const letsGo = 
    //   formEntryData,
    //   hmm,
    // ;

    // const res1 = await fetch("../api/update", 
    //   method: "POST",
    //   headers: 
    //     "Content-Type": "application/json",
    //   ,
    //   body: JSON.stringify(letsGo),
    // );

    // console.log(formEntryData);
    // console.log(hmm);

    hmm.map(async (item, i) => 
      const res = await updateFormInputVal(
        variables: 
          name: item.name,
          type: item.type,
          index: item.index,
          ID: item._id,
          arrayOrder: i,
        ,
      ).catch(console.error);
      //console.log(res);
    );
    setSavingState(true);
  ;
  //console.log(errors);

  const addInput = async (clickData) => 
    console.log("data");
    console.log(clickData);
    console.log("data");

    const res = await createFormInputVal(
      variables: 
        name: "test",
        type: clickData.chooseType,
        index: 0,
      ,
    )
      .then((data) => 
        const blanktext = 
          __typename: "FormInputVal",
          name: "Test",
          _id: data.data.createFormInputVal._id,
          type: clickData.chooseType,
        ;
        console.log(blanktext);
        setFormState([...formState,  ...blanktext ]);
      )
      .catch(console.error);
  ;

  const deleteVal = async (id) => 
    setDeletingState(true);
    const res = await deleteFormInputVal(
      variables: 
        ID: id,
      ,
    ).catch(console.error);
    console.log(res);
  ;

  const [createFormInputVal,  data: createInputData ] = useMutation(
    ADD_INPUT_VALUES
  );

  const [
    updateFormInputVal,
     data: updateInputData, loading: saving ,
  ] = useMutation(UPDATE_FORM_INPUT_VAL);

  const [
    deleteFormInputVal,
     data: deleteInputData, loading: deleting ,
  ] = useMutation(DELETE_FORM_INPUT_VAL, 
    refetchQueries: [ query: INPUT_VALUES ],
  );

  // console.log(updateInputData);

  return (
    <>
      <FormStyles onSubmit=handleSubmit(onSubmit)>
        <h1>Create Your Form Input Fields</h1>
        <div>
          formState?.map((val, idx) => 
            const nameId = `name-$val._id`;
            const typeId = `type-$val._id`;
            return (
              <div key=val._id>
                <GridStyles>
                  <div>
                    <label htmlFor=nameId>Input Name</label>

                    <input
                      type="text"
                      name=nameId
                      id=nameId
                      className=val.type
                      ref=register()
                    />
                  </div>
                  <div>
                    val.type
                    /* <label htmlFor=typeId>Input Type</label>

                    <select
                      defaultValue=val.type
                      name=typeId
                      ref=register
                    >
                      <option value="text">text</option>
                      <option value=" image"> image</option>
                    </select> */
                  </div>
                  <button onClick=() => deleteVal(val._id) type="button">
                    Delete
                  </button>
                </GridStyles>
              </div>
            );
          )
          <GridStyles>
            savingState ? saving ? <p>saving</p> : <p>saved</p> : null
            deletingState ? deleting ? <p>deleting</p> : null : null
            <button type="submit">Save Form</button>
          </GridStyles>
        </div>
      </FormStyles>
      <AddFormStyles onSubmit=handleSubmit2(addInput)>
        <div>
          <label htmlFor="chooseType">Input Type</label>

          <select name="chooseType" ref=register2>
            <option value="text">text</option>
            <option value="image"> image</option>
          </select>
        </div>
        <button type="submit">Add Form Inputs</button>
      </AddFormStyles>
    </>
  );

【问题讨论】：

网络标签...请求出现？只是没有重新渲染？

当我循环回到页面时，网络选项卡中只有三个不相关的东西

嗯，下一个路由器问题？组件代码重新运行？ （console.log(data) 或 formState，或两者兼而有之）...顺便说一句，奇怪的想法...从未使用过空白（只有 3 个加载/错误/数据状态可用/可能在结束/渲染时）...应该在表单内作为默认道具...或有条件地查询输入（当没有 prop 表单 ID 时跳过选项）...if(formData) setFormState(formData) [或if(data)] 生效

我控制了数据和 formState，当我向后和第四次导航时它会显示出来，所以不确定为什么内容没有填充。

包含正确的数据？单独渲染Form，没有Layout

【参考方案1】：

我们证明（参见 cmets）源自 useQuery 的数据已正确记录并传递到 <Form/>（子组件）。

问题在于没有重新初始化表单状态 [managing/helper] 挂钩 (useForm)。应该是有效果的解决了：

const  register, handleSubmit, errors, reset  = useForm( defaultValues: test );

useEffect(() => 
  reset(defaultValues: test);
, [formState])

这个钩子在formState prop 更改时重置表单状态/数据。

【讨论】：

有一点需要注意，要在没有大量重新渲染的情况下工作，我必须使用 [formState] 而不是 [test]。谢谢