suggested changes

app/controllers/admin/organizations_controller.rb

@@ -6,6 +6,33 @@ module Admin
       @organizations = Organization.all
     end
 
+    def create
+      @organization = Organization.new(organization_params)
+      if @organization.save
+        redirect_to admin_organizations_path,
+                    notice: 'Organization successfully created'
+      else
+        redirect_to new_admin_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 admin_organizations_path,
+                    notice: 'Organization successfully updated'
+      else
+        redirect_to edit_admin_organization_path(@organization),
+                    error: @organization.errors.full_messages.join(', ')
+      end
+    end
+
     def destroy
       if @organization.destroy
         redirect_to admin_organizations_path,
@@ -15,5 +42,11 @@ module Admin
                     error: 'Organization cannot be destroyed'
       end
     end
+
+    private
+
+    def organization_params
+      params.require(:organization).permit(:name, :description, :picture)
+    end
   end
 end