CODEWITHSUNDEEP
ruby-on-rails-3graphql
PaReeOhNos
PaReeOhNos

Reputation: 4398

Common arguments graphQL

I'm trying to implement two mutations in graphql-ruby - one for creation of a resource, and one for editing. In most scenarios, they both take the exact same parameters from the client, so I want to avoid duplicating the mutations and try and have the arguments specified in a reusable class/module.

I'm using graphql-ruby 1.8 and the new class based API, and have started with this:

class Mutations::ApplicationMutation < GraphQL::Schema::Mutation
  ... common to every mutation ...
end

class Mutations::CreateResourceMutation < Mutations::ApplicationMutation
  argument :name, String, required: true
  argument :description, String
  argument :create_only_field, String
end

class Mutations::UpdateResourceMutation < Mutations::ApplicationMutation
  argument :name, String, required: true
  argument :description, String
  argument :update_only_field, String
end

In this basic example, the name and description attributes are the same in both mutations. I've extracted the resolver out into another class so that is reusable, but I'm not sure the best way to tackle the arguments.

I imagine an ActiveSupport::Concern would work, but it doesn't feel right or the way I think it should work for this, but I'm very new to GraphQL in general so have no idea.

Upvotes: 1

Views: 320

Answers (1)

Harut Margaryan
Harut Margaryan

Reputation: 96

I can suggest a nice solution creating a complex argument and use in two mutations. Here is the code

# graphql/inputs/resource_input.rb

Inputs::ResourceInput = GraphQL::InputObjectType.define do
  name 'ResourceInput'
  description 'An input object representing arguments for a user'

  argument :name, String, required: true
  argument :description, String
  argument :create_only_field, String
  argument :update_only_field, String
end

and in mutations you can just use 

 argument :resourceInput, Inputs::ResourceInput, "the resource complex input"

Hope this will help you to avoid dupes

Upvotes: 3

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