Calling model method and passing params Rails 6 - ruby-on-rails

Question

I am using Graphql mutation to save a User that looks kinda like this:
class CreateUser < Mutations::BaseMutation
argument :email, String, required: true
argument :password, String, required: true
argument :password_confirmation, String, required: true
argument :first_name, String, required: false
argument :last_name, String, required: false
argument :middle_name, String, required: false
argument :source, String, required: false
field :user, Types::UserType, null: true
field :token, String, null: true
def resolve(args)
user = User.new(password: args[:password], password_confirmation: args[:password_confirmation], email: args[:email])
profile = user.build_profile
profile.first_name = args[:first_name] if args[:first_name].present?
profile.last_name = args[:last_name] if args[:last_name].present?
profile.middle_name = args[:middle_name] if args[:middle_name].present?
user.save!
UserMailer.with(user: user).send_initial_password_instructions.deliver_now if args[:source].present?
# current_user needs to be set so authenticationToken can be returned
context[:current_user] = user
MutationResult.call(obj: { user: user, token: user.authentication_token }, success: user.persisted?, errors: user.errors.full_messages)
end
end
All good here. BUT... I have a model named Contact. Which is quite empty:
class Contact < ApplicationRecord
belongs to :user, optional: true
end
So what I am trying to do is to have a method created on Contact that whenever I create a User I can send some args to Contact and let the Contact method execute the save!
This is what I've been trying: Contact.rb
def self.create_with_user(args)
contact = Contact.new(args)
contact.user = User.new(email: args[:email], password: args[:password], password_confirmation: args[:password_confirmation])
contact.user.save!
end
This is what I've been trying: create_user.rb (graphql mutation)
def resolve(args)
user = User.new(password: args[:password], password_confirmation: args[:password_confirmation], email: args[:email])
profile = user.build_profile
profile.first_name = args[:first_name] if args[:first_name].present?
profile.last_name = args[:last_name] if args[:last_name].present?
profile.middle_name = args[:middle_name] if args[:middle_name].present?
contact = Contact.create_with_user(args)
user.contact = contact
user.save!
UserMailer.with(user: user).send_initial_password_instructions.deliver_now if args[:source].present?
# current_user needs to be set so authenticationToken can be returned
context[:current_user] = user
MutationResult.call(obj: { user: user, token: user.authentication_token }, success: user.persisted?, errors: user.errors.full_messages)
end
But this results into a NoMethodError Exception: undefined method 'to' for Contact:Class.
Newbie rails here so I am really interested in learning this. Thankyou

Answer 1

The error was generated from contact.rb you have a type its belongs_to but you have belongs to.
contact.rb
class Contact < ApplicationRecord
belongs to :user, optional: true
end
Preferred Solutions
If the creation of the Contact should always happen and you don't have any custom params from the endpoint, use a callback on the User model.
user.rb
class User < ApplicationRecord
after_create :create_contact
private
def create_contact
Contact.create(user: self, .....) # the other params you need to pass from model
end
end
If you have custom params from the endpoint you can use accepts_nested_attributes_for and make the contact params nested on the user.
params = {
user: {
user_params,
contact: {
contact_params
}
}
}
user.rb
class User < ApplicationRecord
accepts_nested_attributes_for :contact
end