Rails 4 - nested forms with Cocoon gem - ruby-on-rails

Question

I am trying to make an app in Rails 4.
I use simple form with Cocoon gem.
In development mode, I have all of this working correctly, however in production mode its a big mess.
I have profile model and a qualifications model.
The associations are:
profile.rb
has_many :qualifications
accepts_nested_attributes_for :qualifications, reject_if: :all_blank, allow_destroy: true
qualification.rb
belongs_to :profile
In my profiles new form, I have:
<%= simple_form_for(#profile, multipart: true) do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<div class="intpol2">
Your professional qualifications
</div>
<%= f.simple_fields_for :qualifications do |f| %>
<%= render 'qualifications/qualification_fields', f: f %>
<% end %>
</div>
<div class="row">
<div class="col-md-6">
<%= link_to_add_association 'Add a qualification', f, :qualifications, partial: 'qualifications/qualification_fields' %>
</div>
</div>
<div class="row">
In my qualifications fields new form, I have:
<div class="nested-fields">
<div class="container-fluid">
<div class="form-inputs">
<div class="row">
<div class="col-md-6">
<%= f.input :title, :label => "Your award" %>
</div>
<div class="col-md-6">
</div>
</div>
<div class="row">
<div class="col-md-6">
<%= f.input :level, collection: [ "Bachelor's degree", "Master's degree", "Ph.D", "Post Doctoral award"] %>
</div>
<div class="col-md-6">
<%= f.input :year_earned, :label => "When did you graduate?", collection: (Date.today.year - 50)..(Date.today.year) %>
</div>
</div>
<div class="row">
<div class="col-md-6">
<%= link_to_remove_association 'Remove this qualification', f %>
</div>
</div>
</div>
</div>
</div>
In development, when I click the link to add a new qualification, it reloads the profile new form, but does not reveal the qualifications field form.
I have the same setup with address model (same as qualification).
All of this works in development, but not in production.
Is there an extra step required to get this working in production?
My qualifications controller:
class QualificationsController < ApplicationController
before_action :set_qualification, only: [:show, :edit, :update, :destroy]
before_action :authenticate_user!
# GET /qualifications
# GET /qualifications.json
def index
#qualifications = Qualification.all
authorize #qualifications
end
# GET /qualifications/1
# GET /qualifications/1.json
def show
end
# GET /qualifications/new
def new
#qualification = Qualification.new
authorize #qualification
end
# GET /qualifications/1/edit
def edit
end
# POST /qualifications
# POST /qualifications.json
def create
#qualification = Qualification.new(qualification_params)
authorize #qualification
respond_to do |format|
if #qualification.save
format.html { redirect_to #qualification }
format.json { render :show, status: :created, location: #qualification }
else
format.html { render :new }
format.json { render json: #qualification.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /qualifications/1
# PATCH/PUT /qualifications/1.json
def update
respond_to do |format|
if #qualification.update(qualification_params)
format.html { redirect_to #qualification }
format.json { render :show, status: :ok, location: #qualification }
else
format.html { render :edit }
format.json { render json: #qualification.errors, status: :unprocessable_entity }
end
end
end
# DELETE /qualifications/1
# DELETE /qualifications/1.json
def destroy
#qualification.destroy
respond_to do |format|
format.html { redirect_to qualifications_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_qualification
#qualification = Qualification.find(params[:id])
authorize #qualification
end
# Never trust parameters from the scary internet, only allow the white list through.
def qualification_params
params[:qualification].permit(:profile_id, :level, :title, :year_earned, :institution)
end
end
My profiles controller:
class ProfilesController < ApplicationController
before_action :set_profile, only: [:show, :edit, :update, :destroy]
before_action :authenticate_user!
after_action :verify_authorized
# GET /profiles
# GET /profiles.json
def index
#profiles = Profile.all
authorize #profiles
end
# GET /profiles/1
# GET /profiles/1.json
def show
end
# GET /profiles/new
def new
#profile = Profile.new
#profile.qualifications.build
#profile.visions.build
#profile.personalities.build
#profile.addresses.build
authorize #profile
end
# GET /profiles/1/edit
def edit
end
# POST /profiles
# POST /profiles.json
def create
#profile = Profile.new(profile_params)
authorize #profile
respond_to do |format|
if #profile.save
format.html { redirect_to #profile }
format.json { render :show, status: :created, location: #profile }
else
format.html { render :new }
format.json { render json: #profile.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /profiles/1
# PATCH/PUT /profiles/1.json
def update
respond_to do |format|
if #profile.update(profile_params)
format.html { redirect_to #profile }
format.json { render :show, status: :ok, location: #profile }
else
format.html { render :edit }
format.json { render json: #profile.errors, status: :unprocessable_entity }
end
end
end
# DELETE /profiles/1
# DELETE /profiles/1.json
def destroy
#profile.destroy
respond_to do |format|
format.html { redirect_to profiles_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_profile
#profile = Profile.find(params[:id])
authorize #profile
end
# Never trust parameters from the scary internet, only allow the white list through.
def profile_params
params.require(:profile).permit(:user_id, :title, :hero, :overview, :research_interest, :occupation, :external_profile,
:working_languages, :tag_list,
user_attributes: [:avatar],
personality_attributes: [:average_day, :fantasy_project, :preferred_style],
vision_attributes: [:long_term, :immediate_challenge],
qualifications_attributes: [:id, :level, :title, :year_earned, :institution, :_destroy],
addresses_attributes: [:id, :unit, :building, :street_number, :street, :city, :region, :zip, :country, :latitude, :longitude, :_destroy] )
end
end

Answer 1

This was solved when I precompiled my assets