尝试执行graphql突变,该突变应采用自定义类型。在App Sync模式中,我定义了以下自定义类型:
架构:
input CreateConversationInput {
user: UserInput
doctor: DoctorInput
questionsAndAnsers: [ConversationQAInput]
pet: UpdatePetInput
}
反应本机代码:
const createConversationInput = {
user: {
username: "deep",
userType: "Patient",
fullName: "Deep A"
},
doctor: {
name: "Raman",
speciality: "dog",
doctorId: "0bd9855e-a3f2-4616-8132-aed490973bf7"
},
questionsAndAnswers: [{ question: "Question 1", answer: "Answer 1" }, { question: "Question 2", answer: "Answer 2" }],
pet: { username: "deep39303903", petId: "238280340932", category: "Canine" }
}
API.graphql(graphqlOperation(CreateConversation, createConversationInput)).then(response => {
console.log(response);
}).catch(err => {
console.log(err);
});
我已经定义了这样的突变:
export const CreateConversation = `mutation CreateConversation( $user: Object,
$doctor: Object, $questionsAndAnswers: Object, $pet: Object ) {
createConversation(
input : {
user: $user
doctor: $doctor
questionsAndAnswers: $questionsAndAnswers
pet: $pet
}
){
username
createdAt
}
}`;
该突变在AWS GraphQL控制台中正常运行。但是,在react native应用程序中,出现错误。
错误:
“类型为UnknownType的验证错误:未知类型为Object”。
我相信该错误是因为我将类型定义为“突变型”对象,而不是在AWS Schema中定义的实际类型。如果出现问题,如何在React Native代码中定义自定义类型?
答案 0 :(得分:3)
您只需要更改定义变量的方式即可:
mutation CreateConversation(
$user: UserInput,
$doctor: DoctorInput,
$questionsAndAnswers: [ConversationQAInput],
$pet: UpdatePetInput
) {
createConversation(input: {
user: $user
doctor: $doctor
questionsAndAnswers: $questionsAndAnswers
pet: $pet
}) {
username
createdAt
}
}
在GraphQL中使用变量时,请为该变量指定输入类型(或标量)。然后将其与使用变量的任何参数所期望的类型进行比较。这里的输入类型是架构中的一种类型,与JS没有任何关系,因此您的代码中不需要任何特殊的内容。