Add user admin

app/controllers/admin/groups_controller.rb

@@ -0,0 +1,73 @@
+module Admin
+  class GroupsController < BaseController
+    before_action :set_group, only: [:show, :edit, :update, :destroy]
+
+    def index
+      @groups = Group.order(:name)
+    end
+
+    def show
+      @members = @group.users.order(:email_address)
+      @applications = @group.applications.order(:name)
+      @available_users = User.where.not(id: @members.pluck(:id)).order(:email_address)
+    end
+
+    def new
+      @group = Group.new
+      @available_users = User.order(:email_address)
+    end
+
+    def create
+      @group = Group.new(group_params)
+
+      if @group.save
+        # Handle user assignments
+        if params[:group][:user_ids].present?
+          user_ids = params[:group][:user_ids].reject(&:blank?)
+          @group.users = User.where(id: user_ids)
+        end
+
+        redirect_to admin_group_path(@group), notice: "Group created successfully."
+      else
+        @available_users = User.order(:email_address)
+        render :new, status: :unprocessable_entity
+      end
+    end
+
+    def edit
+      @available_users = User.order(:email_address)
+    end
+
+    def update
+      if @group.update(group_params)
+        # Handle user assignments
+        if params[:group][:user_ids].present?
+          user_ids = params[:group][:user_ids].reject(&:blank?)
+          @group.users = User.where(id: user_ids)
+        else
+          @group.users = []
+        end
+
+        redirect_to admin_group_path(@group), notice: "Group updated successfully."
+      else
+        @available_users = User.order(:email_address)
+        render :edit, status: :unprocessable_entity
+      end
+    end
+
+    def destroy
+      @group.destroy
+      redirect_to admin_groups_path, notice: "Group deleted successfully."
+    end
+
+    private
+
+    def set_group
+      @group = Group.find(params[:id])
+    end
+
+    def group_params
+      params.require(:group).permit(:name, :description)
+    end
+  end
+end