How to read results using Apollo Client for iOS - ios

Question

I'm trying to use GraphQL in iOS with Apollo Client. I have the following mutation:
login(user: String!, password: String!): UserType
and the UserType looks like this:
id: ID
user: String!
password: String!
name: String
lastname: String
email: Email!
groups: [GroupType]
In iOS, I have configured aopllo client as the doc says and is working perfectly, but I don't know how to get access to every field in the response. When the login success I want to read the json I receive as response with the UserType fields, so, I'm doing this:
apolloClient.perform(mutation: loginMutation) {
resultsGQL, error in
...
}
My question is, how can I read every field from resultGQL which belongs to the UserType data defined in my grapql schema?
Regards

Answer 1

The question is not 100% clear, since it is missing some code your mutation: A GraphQL mutation has to return at least one value, which you have to define. Since i'm not sure about your method
login(user: String!, password: String!): UserType
i am giving you a simple example for updating an existing userProfile with a GraphQL mutation and then returning every field being defined in your schema for userType.
Let us assume you have a userType (and therefore know the corresponding userId) and you want to modify the email:
mutation updateUserProfile($id: ID!, $newEmail: String) {
updateUser(id: $id, email: $newEmail) {
id
user
password
name
lastName
email
}
}
As you can see, after executing
updateUser(id: $id, email: $newEmail)
all return values are defined inside the following {...} parentheses and are therefore accessible in your callback variable
resultsGQL
That means:
apolloClient.perform(mutation: loginMutation) { resultsGQL, error in
if let results = resultsGQL?.data {
// "results" can now access all data from userType
}
}
Since you defined all entities of your userType schema to be returned from the mutation, you can access them now in your callback variable.