add command and create method

app/commands/decidim/anonymous_codes/admin/create_code_group.rb

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+module Decidim
+  module AnonymousCodes
+    module Admin
+      class CreateCodeGroup < Decidim::Command
+        def initialize(form, organization)
+          @form = form
+          @organization = organization
+        end
+
+        def call
+          return broadcast(:invalid) if @form.invalid?
+
+          transaction do
+            create_code_group
+          end
+
+          broadcast(:ok)
+        end
+
+        private
+
+        attr_reader :code_group, :form
+
+        def create_code_group
+          @code_group = Decidim.traceability.create!(
+            Group,
+            @form.current_user,
+            title: form.title,
+            expires_at: form.expires_at,
+            active: form.active,
+            max_reuses: form.max_reuses,
+            organization: @organization
+          )
+        end
+      end
+    end
+  end
+end

app/controllers/decidim/anonymous_codes/admin/code_groups_controller.rb

@@ -9,13 +9,27 @@ class CodeGroupsController < ApplicationController
         def index; end
 
         def new
-          @form = form(CodeGroupsForm).instance
+          @form = form(CodeGroupForm).instance
         end
 
-        def create; end
+        def create
+          @form = form(CodeGroupForm).from_params(params)
+
+          CreateCodeGroup.call(@form, current_organization) do
+            on(:ok) do
+              flash[:notice] = I18n.t("code_groups.create.success", scope: "decidim.anonymous_codes.admin")
+              redirect_to code_groups_path
+            end
+
+            on(:invalid) do
+              flash.now[:alert] = I18n.t("code_groups.create.invalid", scope: "decidim.anonymous_codes.admin")
+              render action: "new"
+            end
+          end
+        end
 
         def edit
-          @form = form(CodeGroupsForm).from_model(code_group)
+          @form = form(CodeGroupForm).from_model(code_group)
         end
 
         def update; end

app/forms/decidim/anonymous_codes/admin/code_groups_form.rb → app/forms/decidim/anonymous_codes/admin/code_group_form.rb

@@ -3,7 +3,7 @@
 module Decidim
   module AnonymousCodes
     module Admin
-      class CodeGroupsForm < Decidim::Form
+      class CodeGroupForm < Decidim::Form
         include TranslatableAttributes
 
         translatable_attribute :title, String

config/locales/en.yml

@@ -12,6 +12,9 @@ en:
     anonymous_codes:
       admin:
         code_groups:
+          create:
+            invalid: There was a problem creating this access code group
+            success: Access code group successfully created
           edit:
             title: Edit access code group
           form: