Magento 2 : Extend GrapghQL schema

Question

I have tried to extend the schema mutation

by adding schema.graphql in my module &

type Mutation {
    revokeCustomerToken(pagedata: PageData): RevokeCustomerTokenOutput @resolver(class: "\\Vendor\\CustomerGraphQl\\Model\\Resolver\\RevokeCustomerToken") @doc(description:"Revoke the customer token")
}


input PageData {
    location: String @doc(description: "The location from where the login performed")
    login_type: String @doc(description: "The login type, such as manual or facebook")
    page_path: String @doc(description: "The path of the page")
    page_referrer: String @doc(description: "The page referrer")
    page_title: String @doc(description: "Title of the page")
    page_url: String @doc(description: "The page url")
}

but i am getting Syntax Error GraphQL request (4:15) Expected Name error

i try with this schema in chrome tool

mutation {
  revokeCustomerToken {
    result
    pagedata: {
  location: "test"
  login_type: "test"
  page_path: "[email protected]"
  page_referrer: "test"
  page_title: "test"
  page_url: "test"
}
  }
}

any thoughts on this ?

Answer 1

This is very common error and can be found mostly when there are unclosed curly braces or when some fields are not properly defined while calling the query. However, by looking at your code I found 2 suggestions which can help you to resolve this error.

First solution :

You are referencing a type that is defined further down. Move the type you are referencing up. You can check by swapping the code as below:

input PageData {
    location: String @doc(description: "The location from where the login performed")
    login_type: String @doc(description: "The login type, such as manual or facebook")
    page_path: String @doc(description: "The path of the page")
    page_referrer: String @doc(description: "The page referrer")
    page_title: String @doc(description: "Title of the page")
    page_url: String @doc(description: "The page url")
}

type Mutation {
    revokeCustomerToken(pagedata: PageData): RevokeCustomerTokenOutput @resolver(class: "\\Vendor\\CustomerGraphQl\\Model\\Resolver\\RevokeCustomerToken") @doc(description:"Revoke the customer token")
}

Second Solution :

Kindly change the pagedata key written in the type mutation curly bracket. From (pagedata: PageData) to (input: PageData).

I hope one of the above solutions work for you. If not please let me know, I will think more in detail regarding this.

Thanks,