adds managers section to admin

app/controllers/admin/managers_controller.rb

@@ -0,0 +1,32 @@
+class Admin::ManagersController < Admin::BaseController
+  load_and_authorize_resource
+
+  def index
+    @managers = @managers.page(params[:page])
+  end
+
+  def search
+    @user = User.find_by(email: params[:email])
+
+    respond_to do |format|
+      if @user
+        @manager = Manager.find_or_initialize_by(user: @user)
+        format.js
+      else
+        format.js { render "user_not_found" }
+      end
+    end
+  end
+
+  def create
+    @manager.user_id = params[:user_id]
+    @manager.save
+
+    redirect_to admin_managers_path
+  end
+
+  def destroy
+    @manager.destroy
+    redirect_to admin_managers_path
+  end
+end