Initialize associated object in rails -
i have trouble fill associated objects.
i have associated object, try fill local db's tables form data, can fill building , object composed : light_reseller, stage, furniture, location. don't find how fill component "points" of stage , furniture !
here model building.rb
class building < activerecord::base has_many :stage, dependent: :destroy has_many :furniture, dependent: :destroy has_one :light_reseller, dependent: :destroy has_one :location, dependent: :destroy accepts_nested_attributes_for :light_reseller, :location, :stage, :furniture, :allow_destroy => true end class lightreseller < activerecord::base belongs_to :building end class location < activerecord::base belongs_to :building end class stage < activerecord::base belongs_to :building has_many :points, dependent: :destroy accepts_nested_attributes_for :points end class furniture < activerecord::base belongs_to :building has_many :points, dependent: :destroy accepts_nested_attributes_for :points end class point < activerecord::base belongs_to :furniture belongs_to :stage end i use form fill objects :
<%= form_for (@building) |f| %> <% if @building.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(@building.errors.count, "error") %> prohibited store being saved:</h2> <ul> <% @building.errors.full_messages.each |message| %> <li><%= message %></li> <% end %> </ul> </div> <% end %> <div class="field"> <h2>store</h2> <%= f.label :name %><br> <%= f.text_field :name, class: "form-control" %> <%= f.fields_for :location |loc| %> <%= loc.label :address %><br> <%= loc.text_field :address, class: "form-control" %> <%= loc.label :city %><br> <%= loc.text_field :city, class: "form-control" %> <% end %> <%= f.fields_for :light_reseller |lr| %> <%= lr.label :"light_reseller name" %><br> <%= lr.text_field :name, class: "form-control" %> <% end %> <h2>stage</h2> <%= f.fields_for :stage |ft| %> <%= ft.label :name %><br> <%= ft.text_field :name, class: "form-control" %> <%= ft.fields_for :point |pt| %> <%= pt.label :"point value" %><br> <%= pt.text_field :val, class: "form-control" %> <% end %> <h3>stage entries</h3> <%= ft.fields_for :entrie |et| %> <%= et.label :"entrie name" %><br> <%= et.text_field :name, class: "form-control" %> <%= et.fields_for :point |ept| %> <%= ept.label :"point value" %><br> <%= ept.text_field :val, class: "form-control" %> <% end %> <% end %> <% end %> <%= f.fields_for :furniture |ft| %> <h2>furniture</h2> <%= ft.label :name %><br> <%= ft.text_field :name, class: "form-control" %> <%= ft.fields_for :point |pt| %> <%= pt.label :"point value" %><br> <%= pt.text_field :val, class: "form-control" %> <% end %> <%= ft.fields_for :point |pt| %> <%= pt.label :"point value" %><br> <%= pt.text_field :val, class: "form-control" %> <% end %> <% end %> </div> <div class="actions"> <%= f.submit "add store", class: "btn btn-default"%> </div> <% end %> and here controller :
class buildingscontroller < applicationcontroller before_action :set_building, only: [:show, :edit, :update, :destroy] def index @buildings = building.all end def new @building = building.new @building.build_location @building.build_light_reseller @building.furniture.new @building.stage.build end def show end def create @building = building.new(buildings_params) respond_to |format| if @building.save format.html { redirect_to @building, notice: 'building created.' } format.json { render :index, status: :created, location: @building } else format.html { render :new } format.json { render json: @building.errors, status: :unprocessable_entity } end end end def update respond_to |format| if @building.update(buildings_params) format.html { redirect_to @building, notice: 'building updated.' } format.json { render :show, status: :ok, location: @buildings } else format.html { render :edit } format.json { render json: @buildings.errors, status: :unprocessable_entity } end end end def destroy @building.destroy respond_to |format| format.html { redirect_to buildings_path, notice: 'building destroyed.' } format.json { head :no_content } end end private def set_building @building = building.find(params[:id]) end def buildings_params params.require(:building).permit(:name, location_attributes:[:address, :city], light_reseller_attributes:[:name], furniture_attributes:[:name, point_attributes:[:val]], stage_attributes:[:name, point_attributes:[:val]]) end so when submit form, controller receive these data:
"building"=>{"name"=>"fnac", "location_attributes"=>{"address"=>"12 bird road", "city"=>"paris"}, "light_reseller_attributes"=>{"name"=>"marc"}, "stage_attributes"=>{"0"=>{"name"=>"first", "point"=>{"val"=>"1235"}}}, "furniture_attributes"=>{"0"=>{"name"=>"shelf", "point"=>{"val"=>"45"}}}}
you have relation has_many :points furniture , stage, need change
<%= ft.fields_for :point |pt| %> to
<%= ft.fields_for :points |pt| %> and change point_attributes points_attributes in buildings_params.
try below changes along above.
class building < activerecord::base has_many :stages, dependent: :destroy has_many :furnitures, dependent: :destroy has_one :light_reseller, dependent: :destroy has_one :location, dependent: :destroy accepts_nested_attributes_for :light_reseller, :location, :stages, :furnitures, :allow_destroy => true end def new @building = building.new @building.build_location @building.build_light_reseller @building.furnitures.build @building.stages.build end def buildings_params params.require(:building).permit(:name, location_attributes:[:address, :city], light_reseller_attributes:[:name], furnitures_attributes:[:name, points_attributes:[:val]], stages_attributes:[:name, points_attributes:[:val]]) end <%= f.fields_for :stage |ft| %> <%= f.fields_for :stages |ft| %>
and
<%= f.fields_for :furniture |ft| %> <%= f.fields_for :furnitures |ft| %>
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