introduce organizations

app/controllers/organizations_controller.rb

@@ -0,0 +1,50 @@
+class OrganizationsController < ApplicationController
+  load_and_authorize_resource :organization
+
+  def index
+    @organizations = Organization.all
+  end
+
+  def create
+    @organization = Organization.new(organization_params)
+    if @organization.save
+      redirect_to organizations_path,
+                  notice: 'Organization successfully created'
+    else
+      redirect_to new_organization_path,
+                  error: @organization.errors.full_messages.join(', ')
+    end
+  end
+
+  def new
+    @organization = Organization.new
+  end
+
+  def edit; end
+
+  def update
+    if @organization.update_attributes(organization_params)
+      redirect_to organizations_path,
+                  notice: 'Organization successfully updated'
+    else
+      redirect_to edit_organization_path(@organization),
+                  error: @organization.errors.full_messages.join(', ')
+    end
+  end
+
+  def destroy
+    if @organization.destroy
+      redirect_to organizations_path,
+                  notice: 'Organization successfully destroyed'
+    else
+      redirect_to organizations_path,
+                  error: 'Organization cannot be destroyed'
+    end
+  end
+
+  private
+
+  def organization_params
+    params.require(:organization).permit(:name, :description, :picture)
+  end
+end