Avoid instance variable in view helpers

rubocop rule Rails/HelperInstanceVariable

app/controllers/groups_controller.rb

@@ -75,8 +75,6 @@ class GroupsController < ApplicationController
   # GET /groups/1/edit
   def edit
     @group = Group.includes(:members, :users).find(params[:id])
-
-    set_filters_for_user_autocompleter
   end
 
   # POST /groups

app/helpers/groups_helper.rb

@@ -58,9 +58,10 @@ module GroupsHelper
     ]
   end
 
-  def set_filters_for_user_autocompleter
-    @autocompleter_filters = []
-    @autocompleter_filters.push({ selector: 'status', operator: '=', values: ['active', 'invited'] })
-    @autocompleter_filters.push({ selector: 'group', operator: '!', values: [@group.id] })
+  def autocompleter_filters(group)
+    [
+      { selector: 'status', operator: '=', values: ['active', 'invited'] },
+      { selector: 'group', operator: '!', values: [group.id] }
+    ]
   end
 end

app/views/groups/_users.html.erb

@@ -55,7 +55,7 @@ See COPYRIGHT and LICENSE files for more details.
           <div class="form--field -vertical">
             <%= hidden_field_tag :user_ids, nil  %>
             <user-autocompleter data-update-input="user_ids"
-                                data-additional-filter="<%= @autocompleter_filters&.to_json %>"
+                                data-additional-filter="<%= autocompleter_filters(@group).to_json %>"
                                 class="new-group-members--autocomplete">
             </user-autocompleter>
           </div>