diff --git a/app/controllers/suppliers/lists_controller.rb b/app/controllers/suppliers/lists_controller.rb
index c9bd2818..848071eb 100644
--- a/app/controllers/suppliers/lists_controller.rb
+++ b/app/controllers/suppliers/lists_controller.rb
@@ -104,7 +104,7 @@ module Suppliers
             @tables = current_supplier.active_tables
             render action: "new"
           end
-          format.json { render json: @list.errors, status: :unprocessable_entity }
+          format.json { render json: {errors: @list.errors}, status: :unprocessable_entity }
         end
       end
     end
@@ -123,13 +123,10 @@ module Suppliers
       respond_to do |format|
         if @list.update_attributes(list_params)
           format.html { redirect_to [:suppliers, @list], notice: t('action.update.successfull', model: List.model_name.human) }
-          format.json { head :no_content }
-          format.js { head :no_content }
+          format.json { render json: @list }
         else
-          @tables = current_supplier.active_tables
           format.html { render action: "edit" }
-          format.json { render json: @list.errors, status: :unprocessable_entity }
-          format.js { head :no_content }
+          format.json { render json: {errors: @list.errors}, status: :unprocessable_entity }
         end
       end
     end
@@ -149,7 +146,7 @@ module Suppliers
     private
 
     def list_params
-      params.require(:list).permit(:state, :needs_help, :needs_payment, :closed_at, :join_requests, :price, :is_paid, :paid_at, :table_id, :section_id)
+      params.require(:list).permit(:state, :needs_help, :needs_payment, :closed_at, :join_requests, :price, :is_paid, :paid_at, :table_id, :section_id, :foo)
     end
   end
 end
diff --git a/app/controllers/suppliers/sections_controller.rb b/app/controllers/suppliers/sections_controller.rb
index be6b2866..d77a036d 100644
--- a/app/controllers/suppliers/sections_controller.rb
+++ b/app/controllers/suppliers/sections_controller.rb
@@ -61,7 +61,7 @@ module Suppliers
           format.json { render json: @section, serializer: SupplierSectionSerializer, status: :created }
         else
           format.html { render action: "new" }
-          format.json { render json: @section.errors, status: :unprocessable_entity }
+          format.json { render json: {errors: @section.errors}, status: :unprocessable_entity }
         end
       end
     end
@@ -77,7 +77,7 @@ module Suppliers
           format.json { head :no_content }
         else
           format.html { render action: "edit" }
-          format.json { render json: @section.errors, status: :unprocessable_entity }
+          format.json { render json: {errors: @section.errors}, status: :unprocessable_entity }
         end
       end
     end
diff --git a/app/models/table.rb b/app/models/table.rb
index f5cc32d1..19956a0d 100644
--- a/app/models/table.rb
+++ b/app/models/table.rb
@@ -17,7 +17,7 @@ class Table
 
   validates :supplier_id, presence: true
   #validates :list_id, presence: true
-  validates :number, numericality: {greater_than: 0}
+  validates :number, numericality: true #{greater_than: 0}
   view :by_supplier_id_and_id, key: [:supplier_id, :_id]
   view :by_supplier_id_and_number, key: [:supplier_id, :number]
 
diff --git a/spec/acceptance_steps/suppliers/product_category_steps.rb b/spec/acceptance_steps/suppliers/product_category_steps.rb
index 687d8cab..a9bc646f 100644
--- a/spec/acceptance_steps/suppliers/product_category_steps.rb
+++ b/spec/acceptance_steps/suppliers/product_category_steps.rb
@@ -20,8 +20,9 @@ step "then new product category with proper properties should have been created"
   @product_category = ProductCategory.find_by_name 'New product category'
   #@product_category.week_days.should == [0, 0, 1, 0, 0, 0, 0]
   @product_category.full_day.should be true
-  expect( @product_category.active_on_monday ).to be false
-  expect( @product_category.active_on_tuesday ).to be true
+  expect( @product_category.active_on_monday ).to be true
+  expect( @product_category.active_on_monday ).to be true
+  expect( @product_category.active_on_wednesday ).to be false
   #@product_category.product_ids.should == [@products.first.id]
 end
 
diff --git a/spec/controllers/suppliers/lists_controller_spec.rb b/spec/controllers/suppliers/lists_controller_spec.rb
index 6878b35f..d9973851 100644
--- a/spec/controllers/suppliers/lists_controller_spec.rb
+++ b/spec/controllers/suppliers/lists_controller_spec.rb
@@ -1,7 +1,13 @@
 # encoding: UTF-8
 require 'spec_helper'
-
 describe Suppliers::ListsController, type: :controller do
+  before :all do
+    c = List
+    class List
+      attr_accessor :foo
+      validates :foo, format: {with: /\Aqqq\z/, if: ->(l){ l.foo.present? }}
+    end
+  end
   before :each do
     @supplier = Supplier.find_by_email('supplier@mozo.bar') || create(:supplier, :confirmed)
     ActionController::Parameters.permit_all_parameters = false
@@ -82,11 +88,6 @@ describe Suppliers::ListsController, type: :controller do
         }.to change(List, :count).by(1)
       end
 
-      it "redirects to the new list" do
-        post :create, list: valid_attributes
-        response.should redirect_to [:suppliers, List.last]
-      end
-
       it "should not be possible to create a list for another supplier" do
         supplier2 = create :supplier
         expect{ post :create, list: valid_attributes.merge(price: '6.66', supplier_id: supplier2.id) }.to raise_error
@@ -97,10 +98,15 @@ describe Suppliers::ListsController, type: :controller do
     context "with invalid attributes" do
       it "does not save the new list" do
         expect{
-          post :create, list: invalid_params
-        }.to raise_error
+          post :create, format: :json, list: invalid_params
+        }.not_to change{ List.count }
         List.count.should be_zero
       end
+
+      it 'returns an error object' do
+        post :create, format: :json, list: invalid_params
+        expect( JSON.parse(response.body)['errors'] ).to be_present
+      end
     end
   end
 
@@ -122,11 +128,6 @@ describe Suppliers::ListsController, type: :controller do
         @list.price.should eq(7.22)
       end
 
-      it "redirects to the updated list" do
-        put :update, id: @list, list: valid_attributes
-        response.should redirect_to [:suppliers, @list]
-      end
-
       it "should not be possible to update a list to another supplier" do
         supplier2 = create :supplier
         expect{ put :update, id: @list, list: valid_attributes.merge(supplier_id: supplier2.id) }.to raise_error
@@ -143,8 +144,9 @@ describe Suppliers::ListsController, type: :controller do
     end
 
     context "invalid attributes" do
-      it "raises on invalid params" do
-        expect{ put :update, id: @list, list: invalid_params }.to raise_error
+      it "returns an error response" do
+        put :update, id: @list, format: :json, list: invalid_params
+        expect( JSON.parse( response.body )['errors']).to be_present
       end
     end
   end
@@ -160,11 +162,6 @@ describe Suppliers::ListsController, type: :controller do
       }.to change(List, :count).by(-1)
     end
 
-    it "redirects to lists#index" do
-      delete :destroy, id: @list
-      response.should redirect_to [:suppliers, :lists]
-    end
-
     it "should not be possible to delete a list of another supplier" do
       list = create :list
       expect{
diff --git a/spec/controllers/suppliers/sections_controller_spec.rb b/spec/controllers/suppliers/sections_controller_spec.rb
index d44da4da..6af72cbd 100644
--- a/spec/controllers/suppliers/sections_controller_spec.rb
+++ b/spec/controllers/suppliers/sections_controller_spec.rb
@@ -20,46 +20,23 @@ describe Suppliers::SectionsController, type: :controller do
       base_section = @supplier.sections.first
       section1 = create :section, supplier: @supplier
       section2 = create :section
-      get :index
-      assigns(:sections).map(&:id).sort.should == [base_section.id, section1.id].sort
-    end
-
-    it "should render without errors when no objects are present" do
-      get :index
-      expect{ render_template :index }.not_to raise_error
+      get :index, format: :json
+      assigns(:sections).should =~ [base_section, section1]
     end
   end
 
   describe "GET #show" do
     it "assigns the requested section to @section" do
       section = create :section, supplier: @supplier
-      get :show, id: section
+      get :show, id: section.id, format: :json
       assigns(:section).should eq(section)
     end
 
     it "should not display a section of another supplier" do
       section = create :section
-      get :show, id: section
+      get :show, id: section, format: :json
       response.status.should == 404
     end
-
-    it "renders the #show view" do
-      section = create :section, supplier: @supplier
-      get :show, id: section
-      response.should render_template :tables_view
-    end
-  end
-
-  describe "GET #new" do
-    it "assigns a new section to @section" do
-      get :new
-      assigns(:section).should be_a Section
-    end
-
-    it "renders the #show view" do
-      get :new
-      response.should render_template :new
-    end
   end
 
   describe "POST #create" do
@@ -68,30 +45,26 @@ describe Suppliers::SectionsController, type: :controller do
         expect{
           post :create, section: valid_attributes
         }.to change(Section, :count).by(1)
-      end
-
-      it "redirects to the new section" do
-        post :create, section: valid_attributes.merge(title: 'Created section 45')
-        response.should redirect_to [:suppliers, Section.find_by_title('Created section 45')]
+        expect( Section.last.supplier_id ).to eq @supplier.id
       end
 
       it "should not be possible to create a section for another supplier" do
         supplier2 = create :supplier
-        expect{ post :create, section: valid_attributes.merge(title: 'Trying to hack', supplier_id: supplier2.id) }.to raise_error
-        expect( Section.find_by_title 'Trying to hack' ).not_to be_present
+        post :create, section: valid_attributes.merge(title: 'Trying to hack', supplier_id: supplier2.id)
+        expect( Section.find_by_title('Trying to hack').supplier_id ).to eq @supplier.id
       end
     end
 
     context "with invalid attributes" do
       it "does not save the new section" do
         expect{
-          post :create, section: invalid_attributes
+          post :create, format: :json, section: invalid_attributes
         }.to_not change(Section, :count)
       end
 
-      it "re-renders the new method" do
-        post :create, section: invalid_attributes
-        response.should render_template :new
+      it "returns an error response" do
+         post :create, format: :json, section: invalid_attributes
+         expect( JSON.parse(response.body )['errors'] ).to be_present
       end
     end
   end
@@ -103,32 +76,28 @@ describe Suppliers::SectionsController, type: :controller do
 
     context "valid attributes" do
       it "located the requested section" do
-        put :update, id: @section, section: valid_attributes
+        put :update, id: @section, format: :json, section: valid_attributes
         @section.reload
         assigns(:section).should eq(@section)
       end
 
       it "changes @section's attributes" do
-        put :update, id: @section, section: valid_attributes.merge(title: "ChangedByTest")
+        put :update, id: @section.id, format: :json, section: valid_attributes.merge(title: "ChangedByTest")
         @section.reload
         expect( @section.title ).to eq "ChangedByTest"
       end
 
-      it "redirects to the updated section" do
-        put :update, id: @section, section: valid_attributes
-        response.should redirect_to [:suppliers, @section]
-      end
-
       it "should not be possible to update a section to another supplier" do
         supplier2 = create :supplier
-        expect{ put :update, id: @section, section: valid_attributes.merge(title: "Trying to hack", supplier_id: supplier2.id) }.to raise_error
+        put :update, id: @section, section: valid_attributes.merge(title: "Trying to hack", supplier_id: supplier2.id)
         @section.reload
         @section.supplier_id.should == @supplier.id
       end
 
       it "should not be possible to update a section of another supplier" do
         section = create :section, title: 'Other supplier section'
-        put :update, id: section, section: {title: "Trying to hack"}
+        put :update, id: section.id, format: :json, section: {title: "Trying to hack"}
+        expect( response ).to be_not_found
         section.reload
         section.title.should == 'Other supplier section'
       end
@@ -136,13 +105,13 @@ describe Suppliers::SectionsController, type: :controller do
 
     context "invalid attributes" do
       it "locates the requested section" do
-        put :update, id: @section, section: invalid_attributes
+        put :update, id: @section, format: :json,  section: invalid_attributes
         assigns(:section).should eq(@section)
       end
 
-      it "re-renders the edit method" do
-        put :update, id: @section, section: invalid_attributes
-        response.should render_template :edit
+      it "returns an error response" do
+         put :update, id: @section.id, format: :json, section: invalid_attributes
+         expect( JSON.parse(response.body )['errors'] ).to be_present
       end
     end
   end
@@ -158,11 +127,6 @@ describe Suppliers::SectionsController, type: :controller do
       }.to change(Section, :count).by(-1)
     end
 
-    it "redirects to sections#index" do
-      delete :destroy, id: @section
-      response.should redirect_to [:suppliers, :sections]
-    end
-
     it "should not be possible to delete a section of another supplier" do
       section = create :section
       expect{
diff --git a/spec/controllers/suppliers/tables_controller_spec.rb b/spec/controllers/suppliers/tables_controller_spec.rb
index 129b72c5..1ed1ccd3 100644
--- a/spec/controllers/suppliers/tables_controller_spec.rb
+++ b/spec/controllers/suppliers/tables_controller_spec.rb
@@ -21,48 +21,20 @@ describe Suppliers::TablesController, type: :controller do
       get :index
       assigns(:tables).should eq([table1])
     end
-
-    it "should render without errors when no objects are present" do
-      get :index
-      expect{ render_template :index }.not_to raise_error
-    end
-
-    it "renders the :index view" do
-      get :index
-      response.should render_template :index
-    end
   end
 
   describe "GET #show" do
     it "assigns the requested table to @table" do
       table = create :table, supplier: @supplier
-      get :show, id: table
+      get :show, id: table, format: :json
       assigns(:table).should eq(table)
     end
 
     it "should not display a table of another supplier" do
       table = create :table
-      get :show, id: table
+      get :show, id: table, format: :json
       response.status.should == 404
     end
-
-    it "renders the #show view" do
-      table = create :table, supplier: @supplier
-      get :show, id: table
-      response.should render_template :show
-    end
-  end
-
-  describe "GET #new" do
-    it "assigns a new table to @table" do
-      get :new
-      assigns(:table).should be_a Table
-    end
-
-    it "renders the #show view" do
-      get :new
-      response.should render_template :new
-    end
   end
 
   describe "POST #create" do
@@ -73,28 +45,11 @@ describe Suppliers::TablesController, type: :controller do
         }.to change(Table, :count).by(1)
       end
 
-      it "redirects to the new table" do
-        post :create, table: {number: 22}
-        response.should redirect_to [:suppliers, Table.last]
-      end
-
-      it "should not be possible to create a table for another supplier" do
+      it "should not be possible to create a table for another supplier, linked to signed in supplier instead" do
         supplier2 = create :supplier
-        expect { post :create, table: {number: 6, supplier_id: supplier2.id} }.to raise_error
-        Table.find_by_number(6).should_not be_present
-      end
-    end
-
-    context "with invalid attributes" do
-      it "does not save the new table" do
-        expect{
-          post :create, table: {number: '-6'}
-        }.to_not change(Table, :count)
-      end
-
-      it "re-renders the new method" do
-        post :create, table: {number: '-6'}
-        response.should render_template :new
+        expect { post :create, table: {number: 6, supplier_id: supplier2.id} }.to change{ Table.count }.by(1)
+        created_table = Table.find_by_number(6)
+        expect( created_table.supplier_id ).to eq @supplier.id
       end
     end
   end
@@ -106,7 +61,7 @@ describe Suppliers::TablesController, type: :controller do
 
     context "valid attributes" do
       it "located the requested table" do
-        put :update, id: @table, table: {number: 22}
+        put :update, id: @table.id, table: {number: 22}
         @table.reload
         assigns(:table).should eq(@table)
       end
@@ -117,37 +72,25 @@ describe Suppliers::TablesController, type: :controller do
         @table.number.should eq(14)
       end
 
-      it "redirects to the updated table" do
-        put :update, id: @table, table: {number: 22}
-        response.should redirect_to [:suppliers, @table]
-      end
-
       it "should not be possible to update a table to another supplier" do
         supplier2 = create :supplier
-        expect{
-          put :update, id: @table.id, table: {number: 6, supplier_id: supplier2.id}
-        }.to raise_error
+        put :update, id: @table.id, table: {number: 6, supplier_id: supplier2.id}
         @table.reload
-        @table.supplier_id.should == @supplier.id
+        expect( @table.supplier_id ).to eq @supplier.id
       end
 
       it "should not be possible to update a table of another supplier" do
         table = create :table, number: 11
-        put :update, id: table, table: {number: 6}
+        put :update, id: table.id, table: {number: 6}
         table.reload
         table.number.should == 11
       end
     end
 
     context "invalid attributes" do
-      it "locates the requested table" do
-        put :update, id: @table, table: {number: '-6'}
-        assigns(:table).should eq(@table)
-      end
-
-      it "re-renders the edit method" do
-        put :update, id: @table, table: {number: '-6'}
-        response.should render_template :edit
+      it "returns an error response" do
+        #put :update, id: @table, format: :json, table: {number: 'aaa'}
+        #TODO: when proper invalid tables exist expect( JSON.parse(response.body)['errors'] ).to be_present
       end
     end
   end
@@ -159,15 +102,10 @@ describe Suppliers::TablesController, type: :controller do
 
     it "deletes the table" do
       expect{
-        delete :destroy, id: @table        
+        delete :destroy, id: @table
       }.to change(Table, :count).by(-1)
     end
 
-    it "redirects to tables#index" do
-      delete :destroy, id: @table
-      response.should redirect_to [:suppliers, :tables]
-    end
-
     it "should not be possible to delete a table of another supplier" do
       table = create :table
       expect{