Apollo-客户端在向服务器发送突变时返回“400（错误请求）错误”

Question

我目前使用vue-apollo包为Apollo客户机，使用VueJs堆栈，使用django和graphene-python为我的GraphQl API。

下面是vue-apollo的一个简单设置：

import Vue from 'vue'
import { ApolloClient } from 'apollo-client'
import { HttpLink } from 'apollo-link-http'
import { InMemoryCache } from 'apollo-cache-inmemory'
import VueApollo from 'vue-apollo'
import Cookies from 'js-cookie'


const httpLink = new HttpLink({
  credentials: 'same-origin',
  uri: 'http://localhost:8000/api/',
})

// Create the apollo client
const apolloClient = new ApolloClient({
  link: httpLink,
  cache: new InMemoryCache(),
  connectToDevTools: true,
})

export const apolloProvider = new VueApollo({
  defaultClient: apolloClient,
})

// Install the vue plugin
Vue.use(VueApollo)

'''

import gql from "graphql-tag";
import CREATE_USER from "@/graphql/NewUser.gql";

export default {
  data() {
    return {
      test: ""
    };
  },
  methods: {
    authenticateUser() {
      this.$apollo.mutate({
        mutation: CREATE_USER,
        variables: {
          email: "[e-mail]",
          password: "pa$$word",
          username: "testuser"
        }
      }).then(data => {
          console.log(result)
      })
    }
  }
};

mutation createUser($email: String!, $password: String!, $username: String!) {
  createUser (username: $name, password: $password, email: $email)
  user {
    id
    username
    email
    password
  }
}

返回以下错误响应：

POST http://localhost:8000/api/ 400 (Bad Request)

ApolloError.js?d4ec:37 Uncaught (in promise) Error: Network error: Response not successful: Received status code 400

然而，在我的vue应用程序中，常规查询可以很好地解决正确的响应，除了突变，所以这让我真的很困惑

Answer 1

400个错误通常意味着查询本身有问题。在本例中，您已经定义（并且正在传递）一个名为$username的变量--但是，您的查询在第2行中将其引用为$name。