react-apollo gql, TypeError: Object(...) is not a function [英] react-apollo gql, TypeError: Object(...) is not a function

问题描述

我有一个 App 组件，我将它包装到 apollo 提供程序中:

import React, { Component } from "react";从mobx-react"导入{观察者，提供者}；import { BrowserRouter as Router } from "react-router-dom";从样式组件"导入样式；import { ThemeProvider } from "styled-components";//图QL从apollo-client"导入{ ApolloClient}；import { createHttpLink } from "apollo-link-http";import { setContext } from "apollo-link-context";import { InMemoryCache } from "apollo-cache-inmemory";从./components/Main/Main"导入 Main；从./components/Navigation/Navigation"导入导航；从react-apollo"导入{ ApolloProvider}；const httpLink = createHttpLink({uri: "myUri"});const authLink = setContext((_, { headers }) => {//如果存在，则从本地存储中获取身份验证令牌const token = "myToken";//将标头返回到上下文，以便 httpLink 可以读取它们返回 {标题:{...标题，授权:令牌?`Bearer ${token}` : null}};});const mozaikClient = 新 ApolloClient({链接:authLink.concat(httpLink),缓存:新的 InMemoryCache()});@观察者类 App 扩展组件 {使成为() {返回 (<ThemeProvider theme={theme}><ApolloProvider 客户端={mozaikClient}><提供者{...this.props.stores}><路由器><div className="app-container"><导航/><主要/>

</路由器></提供者></ApolloProvider></ThemeProvider>);}}导出默认应用程序；

然后我有我想要使用提供程序数据的 About 组件:

import React, { Component } from "react";从react-apollo"导入 { gql, graphql };类关于扩展组件{使成为() {返回<div>关于组件.</div>;}}const landPageQuery = gql`查询登陆页面{文件(类型:[着陆]){项目 {ID... 关于 LandingDocument {登陆人像{ID网址}问候内容}}}}`;导出默认graphql(landingPageQuery)(About);

我收到以下错误:

<块引用>

About.js:10 Uncaught TypeError: Object(...) is not a function在 Object../src/components/About/About.js (About.js:10)在 webpack_require(引导程序 9e0e85e19ef23447e3e2:669)在 fn(引导程序 9e0e85e19ef23447e3e2:87)在 Object../src/components/Main/routes.js (routes.js:1)在 webpack_require(引导程序 9e0e85e19ef23447e3e2:669)在 fn(引导程序 9e0e85e19ef23447e3e2:87)在 Object../src/components/Main/Main.js (Contact.js:4)在 webpack_require(引导程序 9e0e85e19ef23447e3e2:669)在 fn(引导程序 9e0e85e19ef23447e3e2:87)在 Object../src/App.js (zen-observable.js:498)在 webpack_require(引导程序 9e0e85e19ef23447e3e2:669)在 fn(引导程序 9e0e85e19ef23447e3e2:87)在 Object../src/index.js (Skills.js:4)在 webpack_require(引导程序 9e0e85e19ef23447e3e2:669)在 fn(引导程序 9e0e85e19ef23447e3e2:87)在 Object.0 (styleVariables.js:17)在 webpack_require(引导程序 9e0e85e19ef23447e3e2:669)在引导程序 9e0e85e19ef23447e3e2:715在 bundle.js:719

这个错误来自哪里以及为什么，它是什么意思?它指向我使用 gql

定义查询的行

解决方案

这似乎是一个已知问题 - 请参阅 此处.尝试安装 graphql-tag 并从此库中导入 gql.

I have a App component that I am wrapping into a apollo provider:

import React, { Component } from "react";
import { observer, Provider } from "mobx-react";
import { BrowserRouter as Router } from "react-router-dom";
import styled from "styled-components";
import { ThemeProvider } from "styled-components";

// graphQL
import { ApolloClient } from "apollo-client";
import { createHttpLink } from "apollo-link-http";
import { setContext } from "apollo-link-context";
import { InMemoryCache } from "apollo-cache-inmemory";

import Main from "./components/Main/Main";
import Navigation from "./components/Navigation/Navigation";

import { ApolloProvider } from "react-apollo";

const httpLink = createHttpLink({
  uri: "myUri"
});

const authLink = setContext((_, { headers }) => {
  // get the authentication token from local storage if it exists
  const token = "myToken";
  // return the headers to the context so httpLink can read them
  return {
    headers: {
      ...headers,
      authorization: token ? `Bearer ${token}` : null
    }
  };
});

const mozaikClient = new ApolloClient({
  link: authLink.concat(httpLink),
  cache: new InMemoryCache()
});

@observer
class App extends Component {
  render() {
    return (
      <ThemeProvider theme={theme}>
        <ApolloProvider client={mozaikClient}>
          <Provider {...this.props.stores}>
            <Router>
              <div className="app-container">
                <Navigation />
                <Main />
              </div>
            </Router>
          </Provider>
        </ApolloProvider>
      </ThemeProvider>
    );
  }
}

export default App;

Then I have the About component that I want to consume the provider data:

import React, { Component } from "react";

import { gql, graphql } from "react-apollo";
class About extends Component {
  render() {
    return <div>About component.</div>;
  }
}

const landingPageQuery = gql`
  query landingPage {
    documents(types: [LANDING]) {
      items {
        id
        ... on LandingDocument {
          landingPortrait {
            id
            url
          }
          greeting
          content
        }
      }
    }
  }
`;

export default graphql(landingPageQuery)(About);

I am getting the following error:

About.js:10 Uncaught TypeError: Object(...) is not a function at Object../src/components/About/About.js (About.js:10) at webpack_require (bootstrap 9e0e85e19ef23447e3e2:669) at fn (bootstrap 9e0e85e19ef23447e3e2:87) at Object../src/components/Main/routes.js (routes.js:1) at webpack_require (bootstrap 9e0e85e19ef23447e3e2:669) at fn (bootstrap 9e0e85e19ef23447e3e2:87) at Object../src/components/Main/Main.js (Contact.js:4) at webpack_require (bootstrap 9e0e85e19ef23447e3e2:669) at fn (bootstrap 9e0e85e19ef23447e3e2:87) at Object../src/App.js (zen-observable.js:498) at webpack_require (bootstrap 9e0e85e19ef23447e3e2:669) at fn (bootstrap 9e0e85e19ef23447e3e2:87) at Object../src/index.js (Skills.js:4) at webpack_require (bootstrap 9e0e85e19ef23447e3e2:669) at fn (bootstrap 9e0e85e19ef23447e3e2:87) at Object.0 (styleVariables.js:17) at webpack_require (bootstrap 9e0e85e19ef23447e3e2:669) at bootstrap 9e0e85e19ef23447e3e2:715 at bundle.js:719

Where and why is this error coming from, and what does it mean? It is pointing to the line where I am defining my query using gql

解决方案

This seems like a known issue - see here. Try installing graphql-tag and importing gql from this library.

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