[Request] Option to make Variables$ required

[JCKodel]

I have this piece of graphql schema (from Hasura):

input UserLogins_insert_input {
  User: Users_obj_rel_insert_input
  created: timestamptz
  deleted: Boolean
  timestamp: Int
  updated: timestamptz
  userId: String
}

Hasura should made those fields required, since they are indeed required (they are all NOT NULL in the database).

Then, I need to insert that entity:

mutation PushUserData(
  $userLogins: [UserLogins_insert_input!]!
) {
  insert_UserLogins(objects: $userLogins, on_conflict: {constraint: UserLogins_pkey}) {
    affected_rows
  }
}

When Variables$Mutation$PushUserData is created, the Input$UserLogins_insert_input is created with all fields as not required:

class Input$UserLogins_insert_input {
  factory Input$UserLogins_insert_input({
    Input$Users_obj_rel_insert_input? User,
    DateTime? created,
    bool? deleted,
    int? timestamp,
    DateTime? updated,
    String? userId,
  })

...

This is a problem, because when we create a new field in our local database, there is no compiler warning at all if we forget to add that field on the graphql.

So, a solution for this would be a build option that make the required keyword to be generated on these Input$ types, if we configure it with that option.

So, in build.yaml

targets:
  $default:
    builders:
      graphql_codegen:
        options:
          input_type_primitives_gen_required: bool # only primitives, not nested inputs
...

Would generate that class as:

class Input$UserLogins_insert_input {
  factory Input$UserLogins_insert_input({
    Input$Users_obj_rel_insert_input? User,
    required DateTime? created,
    required bool? deleted,
    required int? timestamp,
    required DateTime? updated,
    required String? userId,
  })

...

That would make the compiler useful to alert us when something has changed on the query and we forget to specify those new fields in the mutations/queries.

[github-actions]

👋 @JCKodel
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