mozo-backend/app/controllers/suppliers_controller.rb

class SuppliersController < ApplicationController
  before_filter :set_relation_options, only: [:new, :edit, :create, :update]
  # GET /suppliers
  # GET /suppliers.json
  def index
    @suppliers = Supplier.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @suppliers }
    end
  end

  # GET /suppliers/1
  # GET /suppliers/1.json
  def show
    @supplier = Supplier.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @supplier }
    end
  end

  # GET /suppliers/new
  # GET /suppliers/new.json
  def new
    @supplier = Supplier.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @supplier }
    end
  end

  # GET /suppliers/1/edit
  def edit
    @supplier = Supplier.find(params[:id])
  end

  # POST /suppliers
  # POST /suppliers.json
  def create
    @supplier = Supplier.new(params[:supplier])

    respond_to do |format|
      if @supplier.save
        format.html { redirect_to @supplier, notice: t('action.create.successfull', model: Supplier.model_name.human) }
        format.json { render json: @supplier, status: :created, location: @supplier }
      else
        format.html { render action: "new" }
        format.json { render json: @supplier.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /suppliers/1
  # PUT /suppliers/1.json
  def update
    @supplier = Supplier.find(params[:id])

    respond_to do |format|
      if @supplier.update_attributes(params[:supplier])
        format.html { redirect_to @supplier, notice: t('action.update.successfull', model: Supplier.model_name.human) }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @supplier.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /suppliers/1
  # DELETE /suppliers/1.json
  def destroy
    @supplier = Supplier.find(params[:id])
    @supplier.destroy

    respond_to do |format|
      format.html { redirect_to suppliers_url, notice: t('action.destroy.successfull', model: Supplier.model_name.human) }
      format.json { head :no_content }
    end
  end

  # GET /suppliers/1/product_list
  # GET /suppliers/1/product_list.json
  def product_list
    @supplier = Supplier.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json do
        products = @supplier.products
        products.include_relation(:product_categories)
        products.sort_by!{|p| p.product_category.try(:position) || 90000}
        h = products.inject({}){|h, p| n = p.product_category.try(:name) || 'other'; h[n] ||= []; h[n] << p; h}
        render json: h
      end
    end
  end

  # GET /suppliers/1/active_orders
  # GET /suppliers/1/active_orders.json
  def active_orders
    @supplier = Supplier.find(params[:id])
    respond_to do |format|
      format.html { render layout: 'tablet' }
      format.json do
        h = @supplier.as_json
        h[:orders] = []
        list_total = 0.0
        for order in @supplier.active_orders
          ho = {products: []}
          order_total = 0.0
          for product_order in order.product_orders
            order_total += (product_order.amount * product_order.product.price).round(2)
            ho[:products] << {name: product_order.product.name, id: product_order.product_id, number: product_order.amount, price: product_order.product.price}
          end
          ho[:total_amount] = order_total.round(2)
          ho[:state] = order.state
          ho[:table_number] = order.table_number
          ho[:id] = order.id
          list_total += ho[:total_amount]
          h[:orders] << ho
        end 
        h[:total_amount] = list_total.round(2)
        render json: h, layout: 'tablet'
      end
    end
  end

  # GET /suppliers/1/active_lists
  # GET /suppliers/1/active_lists.json
  def active_lists
    @supplier = Supplier.find(params[:id])
    respond_to do |format|
      format.html { render layout: 'tablet' }
      format.json do
        h = @supplier.as_json
        h[:lists] = []
        grand_total = 0.0
        for list in @supplier.active_lists
          hl = list.as_json
          hl[:total_amount] = list.orders.inject(0.0){|sum, o| sum + o.product_orders.inject(0.0){|s, po| s + (po.amount * po.product.price).round(2)}}.round(2)
          grand_total += hl[:total_amount]
          h[:lists] << hl
        end 
        h[:total_amount] = grand_total.round(2)
        render json: h, layout: 'tablet'
      end
    end
  end
  private

  def set_relation_options
    @suppliers = Supplier.all
    @lists = List.all
  end
end