所以我昨天才刚开始使用GraphQl,我对如何从客户端传递查询感到有些困惑。
我想要的:
我只想使用简单的fetch
进行查询/突变:
const mutation = `
// even better would be: UserRegister( firstName: ${firsName}, lastName: ${lastName}, email: ${email}, password: ${password} )
UserRegister( firstName: "John", lastName: "Doe", email: "john_doe@outlook.com", password: "123" ) {
_id,
firstName,
lastName,
email
}
`
const options = {
'method': 'POST',
'headers': { 'Content-Type': 'application/json' },
'body': JSON.stringify( { mutation } )
}
const res = await fetch( 'http://localhost:3000/graphql', options )
现在,当从客户端运行此命令时,出现http://localhost:3000/graphql 400 (Bad Request)
错误。
但是当我在操场上运行相同的查询时,它就可以正常工作:
我在这里做什么错了?
有效查询(无法回答我的问题):
我设法使查询与Apollo客户端一起使用,但是我感觉这是很多查询代码。使用Apollo客户端时,是否可以用较少的代码编写查询?当服务器上的架构中已经定义了变量类型时,为什么我需要在这里定义变量类型(服务器不能执行验证)?
const client = new ApolloClient( {
'uri': 'http://localhost:3000/graphql',
'cache': new InMemoryCache()
} )
const mutation = gql`
// why this?
mutation UserRegister( $firstName: String!, $lastName: String!, $email: String!, $password: String! ) {
UserRegister( firstName: $firstName, lastName: $lastName, email: $email, password: $password ) {
_id,
firstName,
lastName,
email
}
}
`
const res = await client.mutate( {
mutation,
// also why defining the variables here?
'variables': {
'firstName': 'John',
'lastName': 'Doe',
'email': 'john_doe@outlook.com',
'password': '123'
}
} )
答案 0 :(得分:0)
@xadm向我指出了解决方案:
const query = `
mutation {
UserRegister( firstName: "John", lastName: "Doe", email: "john_doe@outlook.com", password: "123" ) {
_id,
firstName,
lastName,
email
}
}
`
const options = {
'method': 'POST',
'headers': { 'Content-Type': 'application/json' },
'body': JSON.stringify( { query } )
}
const res = await fetch( 'http://localhost:3000/graphql', options )