Question

我想将多个客户端集成到我的react-hooks应用程序中。我通过Apollo客户端使用graphql-hooks，我们有一个模块可以集成多个客户端

以下是链接Apollo graphql多客户端

    `https://www.npmjs.com/package/@titelmedia/react-apollo-multiple-clients`

以下是我用于graphql挂钩

https://www.npmjs.com/package/graphql-hooks

我们如何实现graphql-hooks的相同？

我的要求取决于单选按钮的选择，我需要使用多个客户端在一个组件中的所有多个客户端之间切换。在我的应用程序中，我使用graphql-hook将组件包装到客户端，该组件具有相同的功能，其中必须根据选择的单选按钮之一切换客户端。我有一个客户端，但需要集成多个客户端我用谷歌搜索但没有找到的客户在这里提出了疑问。这可能吗？有人可以帮忙吗

Answer 1

我们可以多次使用新的GraphQLClient（）获取多个graphql客户端

Answer 2

这是一个很好的方法，您可以遵循它：https://www.loudnoises.us/next-js-two-apollo-clients-two-graphql-data-sources-the-easy-way/

Answer 3

我有两个正在运行的中间件graphql服务器。一种用于应用程序，另一种用于分析。我会根据以下需求以两种不同的方式进行操作...

CubeClient.jsx

import { ApolloClient } from "apollo-client";
import { InMemoryCache } from "apollo-cache-inmemory";
import { SchemaLink } from "apollo-link-schema";
import { makeExecutableSchema } from "graphql-tools";

const cache = new InMemoryCache();
const defaultDashboardItems = [{"vizState":"{\"query\":{\"measures\":[\"Product.count\"],\"timeDimensions\":[{\"dimension\":\"Product.createdAt\"}],\"dimensions\":[\"Producttype.name\"],\"filters\":[],\"order\":{}},\"chartType\":\"bar\",\"orderMembers\":[{\"id\":\"Product.count\",\"title\":\"Product Count\",\"order\":\"none\"},{\"id\":\"Producttype.name\",\"title\":\"Producttype Name\",\"order\":\"none\"},{\"id\":\"Product.createdAt\",\"title\":\"Product Created at\",\"order\":\"none\"}],\"pivotConfig\":{\"x\":[\"Producttype.name\"],\"y\":[\"measures\"],\"fillMissingDates\":true,\"joinDateRange\":false},\"shouldApplyHeuristicOrder\":true,\"sessionGranularity\":null}","name":"Product Types","id":"2","layout":"{\"x\":0,\"y\":0,\"w\":24,\"h\":8}"},{"vizState":"{\"query\":{\"measures\":[\"Sale.total\"],\"timeDimensions\":[{\"dimension\":\"Sale.createdAt\",\"granularity\":\"day\"}],\"dimensions\":[\"Customer.firstname\"],\"order\":{\"Sale.total\":\"desc\"}},\"chartType\":\"area\",\"orderMembers\":[{\"id\":\"Sale.total\",\"title\":\"Sale Total\",\"order\":\"desc\"},{\"id\":\"Customer.firstname\",\"title\":\"Customer Firstname\",\"order\":\"none\"},{\"id\":\"Sale.createdAt\",\"title\":\"Sale Created at\",\"order\":\"none\"}],\"pivotConfig\":{\"x\":[\"Sale.createdAt.day\"],\"y\":[\"Customer.firstname\",\"measures\"],\"fillMissingDates\":true,\"joinDateRange\":false},\"shouldApplyHeuristicOrder\":true}","name":"Sale Total","id":"3","layout":"{\"x\":0,\"y\":8,\"w\":24,\"h\":8}"}]

export function getCubeClient(location){

  const getDashboardItems = () => {
    //   return JSON.parse(window.localStorage.getItem("dashboardItems")) || defaultDashboardItems;
    return defaultDashboardItems
  }

  const setDashboardItems = items => {
    return  window.localStorage.setItem("dashboardItems", JSON.stringify(items));
  }

  const nextId = () => {
    const currentId = parseInt(window.localStorage.getItem("dashboardIdCounter"), 10) || 1;
    window.localStorage.setItem("dashboardIdCounter", currentId + 1);
    return currentId.toString();
  };

  const toApolloItem = i => ({ ...i, __typename: "DashboardItem" });

  const typeDefs = `
    type DashboardItem {
      id: String!
      layout: String
      vizState: String
      name: String
    }

    input DashboardItemInput {
      layout: String
      vizState: String
      name: String
    }

    type Query {
      dashboardItems: [DashboardItem]
      dashboardItem(id: String!): DashboardItem
    }

    type Mutation {
      createDashboardItem(input: DashboardItemInput): DashboardItem
      updateDashboardItem(id: String!, input: DashboardItemInput): DashboardItem
      deleteDashboardItem(id: String!): DashboardItem
    }
  `;
  const schema = makeExecutableSchema({
    typeDefs,
    resolvers: {
      Query: {
        dashboardItems() {
          const dashboardItems = getDashboardItems();
          return dashboardItems.map(toApolloItem);
        },

        dashboardItem(_, { id }) {
          const dashboardItems = getDashboardItems();
          return toApolloItem(dashboardItems.find(i => i.id.toString() === id));
        }
      },
      Mutation: {
        createDashboardItem: (_, { input: { ...item } }) => {
          const dashboardItems = getDashboardItems();
          item = { ...item, id: nextId(), layout: JSON.stringify({}) };
          dashboardItems.push(item);
          setDashboardItems(dashboardItems);
          return toApolloItem(item);
        },
        updateDashboardItem: (_, { id, input: { ...item } }) => {
          const dashboardItems = getDashboardItems();
          item = Object.keys(item)
            .filter(k => !!item[k])
            .map(k => ({
              [k]: item[k]
            }))
            .reduce((a, b) => ({ ...a, ...b }), {});
          const index = dashboardItems.findIndex(i => i.id.toString() === id);
          dashboardItems[index] = { ...dashboardItems[index], ...item };
          setDashboardItems(dashboardItems);
          return toApolloItem(dashboardItems[index]);
        },
        deleteDashboardItem: (_, { id }) => {
          const dashboardItems = getDashboardItems();
          const index = dashboardItems.findIndex(i => i.id.toString() === id);
          const [removedItem] = dashboardItems.splice(index, 1);
          setDashboardItems(dashboardItems);
          return toApolloItem(removedItem);
        }
      }
    }
  });

  return  new ApolloClient({
    cache,
    uri: "http://localhost:4000",
    link: new SchemaLink({
      schema
    })
  });
}

Dashboard.jsx

import { getCubeClient } from './CubeClient';
import { Query } from "react-apollo";

let cubeClient = getCubeClient()

const Dashboard = () => {
  const dashboardItem = item => (
    <div key={item.id} data-grid={defaultLayout(item)}>
      <DashboardItem key={item.id} itemId={item.id} title={item.name}>
        <ChartRenderer vizState={item.vizState} />
      </DashboardItem>
    </div>
  );

return(
  <Query query={GET_DASHBOARD_ITEMS} client={cubeClient}>
    {({ error, loading, data }) => {
      if (error) return <div>"Error!"</div>;
      if (loading) return (
            <div className="alignCenter">
              <Spinner color="#be97e8" size={48} sizeUnit="px" />
            </div>
          );
      if (data) {
        return (<DashboardView t={translate} dashboardItems={data && data.dashboardItems}>
          {data && data.dashboardItems.map(deserializeItem).map(dashboardItem)}
        </DashboardView>)
      } else {
        return <div></div>
      }
    }}
  </Query>
  )
};

Explore.jsx

import { useQuery } from "@apollo/react-hooks";
import { withRouter } from "react-router-dom";
import ExploreQueryBuilder from "../components/QueryBuilder/ExploreQueryBuilder";
import { GET_DASHBOARD_ITEM } from "../graphql/queries";
import TitleModal from "../components/TitleModal.js";
import { isQueryPresent } from "@cubejs-client/react";
import PageHeader from "../components/PageHeader.js";
import ExploreTitle from "../components/ExploreTitle.js";
import { PageLayout } from '@gqlapp/look-client-react';
import Helmet from 'react-helmet';
import { translate } from '@gqlapp/i18n-client-react';
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
import { faAngleRight, faTrashAlt, faPlusCircle } from '@fortawesome/free-solid-svg-icons';
import settings from '@gqlapp/config';
import PropTypes from 'prop-types';
import { getCubeClient } from './CubeClient';

let cubeClient = getCubeClient()

const Explore = withRouter(({ history, location,t }) => {
  const [addingToDashboard, setAddingToDashboard] = useState(false);
  const params = new URLSearchParams(location.search);
  const itemId = params.get("itemId");
  const { loading, error, data } = useQuery(GET_DASHBOARD_ITEM, {
    client: cubeClient,
    variables: {
      id: itemId
    },
    skip: !itemId
  });

Titlemodal.jsx

import React from "react";
import { Modal, Input } from "antd";
import { useMutation } from "@apollo/react-hooks";
import { GET_DASHBOARD_ITEMS } from "../graphql/queries";
import {
  CREATE_DASHBOARD_ITEM,
  UPDATE_DASHBOARD_ITEM
} from "../graphql/mutations";
import { getCubeClient } from '../containers/CubeClient';

let cubeClient = getCubeClient()

const TitleModal = ({
  history,
  itemId,
  titleModalVisible,
  setTitleModalVisible,
  setAddingToDashboard,
  finalVizState,
  setTitle,
  finalTitle
}) => {
  const [addDashboardItem] = useMutation(CREATE_DASHBOARD_ITEM, {
    client: cubeClient,
    refetchQueries: [
      {
        query: GET_DASHBOARD_ITEMS
      }
    ]
  });
  const [updateDashboardItem] = useMutation(UPDATE_DASHBOARD_ITEM, {
    client: cubeClient,
    refetchQueries: [
      {
        query: GET_DASHBOARD_ITEMS
      }
    ]
  });

查询和mutation.js

import gql from "graphql-tag";

export const GET_DASHBOARD_ITEMS = gql`
  query GetDashboardItems {
    dashboardItems {
      id
      layout
      vizState
      name
    }
  }
`;

export const GET_DASHBOARD_ITEM = gql`
  query GetDashboardItem($id: String!) {
    dashboardItem(id: $id) {
      id
      layout
      vizState
      name
    }
  }
`;

export const CREATE_DASHBOARD_ITEM = gql`
  mutation CreateDashboardItem($input: DashboardItemInput) {
    createDashboardItem(input: $input) {
      id
      layout
      vizState
      name
    }
  }
`;

export const UPDATE_DASHBOARD_ITEM = gql`
  mutation UpdateDashboardItem($id: String!, $input: DashboardItemInput) {
    updateDashboardItem(id: $id, input: $input) {
      id
      layout
      vizState
      name
    }
  }
`;

export const DELETE_DASHBOARD_ITEM = gql`
  mutation DeleteDashboardItem($id: String!) {
    deleteDashboardItem(id: $id) {
      id
      layout
      vizState
      name
    }
  }
`;

如何在react钩子中使用graphql钩子集成多个客户端

3 个答案: