configs/routes.rb
Shutters and Paints are subresources of Jobs.
resources :jobs do
resources :shutters
resources :paints
end
app/models/job.rb
A Job contains many Shutters and many Paints.
class Job < ActiveRecord::Base
has_many :shutters, dependent: :delete_all
has_many :paints, dependent: :delete_all
accepts_nested_attributes_for :shutters, allow_destroy: true, :reject_if => lambda { |a| a[:no].blank? }
accepts_nested_attributes_for :paints, allow_destroy: true, :reject_if => lambda { |a| a[:name].blank? }`
app/models/shutter.rb
A Shutter contains belongs to one Job and one Paint.
class Shutter < ActiveRecord::Base
belongs_to :job
belongs_to :paint
app/models/paint.rb
A Paint belongs to one Job but can be referenced by many Shutters in that job.
class Paint < ActiveRecord::Base
belongs_to :job
has_many :shutters
Both Jobs#show and Jobs#edit work fine with the code <%= debug @job.paints %> if there are no Paints already in the database. But the moment a paint is added, a RuntimeError is raised, "Circular dependency detected while autoloading constant PAINT".
What's the best way to fix this error?
Edit: Controller info
app/controllers/jobs_controller.rb
class JobsController < ApplicationController
before_action :set_job, only: [:show, :edit, :update, :destroy]
...
# GET /jobs/1
# GET /jobs/1.json
def show
end
# GET /jobs/new
def new
@job = Job.new
@job.shutters.build
@job.paints.build
end
# GET /jobs/1/edit
def edit
@job.shutters.build
@job.paints.build
end
app/controllers/shutters_controller.rb
class ShuttersController < ApplicationController
def new
@shutter = Shutter.new
end
def destroy
@shutter = Shutter.find(params[:id])
@job = Job.find(@shutter[:job_id])
@shutter.destroy
respond_to do |format|
format.html {redirect_to @job, notice: 'Shutter was succesfully deleted.' }
end
end
end
app/controllers/paints_controller.rb
class PaintsController < ApplicationController
def new
@paint = Paint.new
end
def destroy
@paint = Paint.find(params[:id])
@job = Job.find(@paint[:job_id])
@paint.destroy
respond_to do |format|
format.html {redirect_to @job, notice: 'Paint was succesfully deleted.' }
end
end
end
