shrirambalakrishnan

# app/graphql/resolvers/create_movie.rb

class Resolvers::CreateMovie < GraphQL::Function
  # arguments passed as "args"
  argument :name,   !types.String
  argument :year,   types.String
  argument :genre,  types.String

  # return type from the mutation
  type Types::MovieType

shrirambalakrishnan

# app/assets/javascripts/cable/subscriptions/movies.coffee

App.cable.subscriptions.create { channel: "MoviesChannel" },
  received: (data) ->
    @appendToMoviesList(data)

  appendToMoviesList: (data) ->
    $('.movies-list').append( @getHtml(data) )

  getHtml: (data) ->

shrirambalakrishnan

# app/channels/movies_channel.rb

class MoviesChannel < ApplicationCable::Channel
  # Called when any consumer subscribes to this channel.
  def subscribed
    stream_from "movies"
  end
end

shrirambalakrishnan

<ol class="movies-list">
  <% @movies.each do |movie| %>
    <li>
      <div>
        <span><%= movie.name %></span>
      </div>
    </li>
  <% end %>
</ol>

shrirambalakrishnan

class MoviesController < ApplicationController
  def index
    @movies = Movie.all
  end
end

shrirambalakrishnan

class Resolvers::CreateMovie < GraphQL::Function
  # arguments passed as "args"
  argument :name,   !types.String
  argument :year,   types.String
  argument :genre,  types.String
  # return type from the mutation
  type Types::MovieType
  # the mutation method
  def call(_obj, args, _ctx)
    movie_params  = { name: args[:name], year: args[:year], genre: args[:genre] }

shrirambalakrishnan

field :create_movie,
      description: "Create new movie",
      function: Resolvers::CreateMovie.new

shrirambalakrishnan

Types::MovieType = GraphQL::ObjectType.define do
  name 'Movie'
  description 'Movie Details'
  field :id,    !types.ID
  field :name,  !types.String
  field :genre, types.String
  field :year,  types.String
  field :actors do
  type types[Types::ActorType]
    description "Actor"

shrirambalakrishnan

Types::ActorType = GraphQL::ObjectType.define do
  name 'Actor'
  description 'Actor Details'
  field :id,            !types.ID
  field :name,          !types.String
  field :gender,        types.String
  field :date_of_birth, types.String
end

shrirambalakrishnan

field :movies do
  type        types[Types::MovieType]
  description "Return the first movie"
  resolve ->(obj, args, ctx) { Movie.all }
end