update: messages for user

app/Nova/Actions/ChangeValue.php

@@ -35,7 +35,7 @@ public function handle(ActionFields $fields, Collection $models)
             $retailersValue = Product::where('retailer_id', $fields->fromRetailer)->where('sku', $model['sku'])->select($this->field)->first();
             if(!$retailersValue)
             {
-                return Action::danger('Error!');
+                return Action::danger('Of the selected products, not all retailers have a qualifying product!');
             }
             Product::where('retailer_id', $this->retailer)->where('sku', $model['sku'])->update([$this->field => $retailersValue[$this->field]]);
         }

app/Nova/Lenses/CompareProduct.php

@@ -21,18 +21,28 @@ public static function query(LensRequest $request, $query)
         $data = self::getDataFromUrl();
         if ($data) {
             $existFields = Product::where('retailer_id', $data['retailer'])->pluck('sku')->all();
-
-            return $query
-                ->where('retailer_id', '!=', $data['retailer'])
-                ->whereIn('sku', $existFields)
-                ->join('retailers as r', 'products.retailer_id', '=', 'r.id')
-                ->select(
+            $returnQuery = $query
+            ->where('retailer_id', '!=', $data['retailer'])
+            ->whereIn('sku', $existFields)
+            ->join('retailers as r', 'products.retailer_id', '=', 'r.id');
+            if($data['field'] === 'name')
+            {
+                $returnQuery->select(
+                    'sku',
+                    DB::raw('group_concat(products.id) as id'),
+                    DB::raw('group_concat(products.name) as name'),
+                    DB::raw('group_concat(r.id) as retailer_id'));
+            }
+            else{
+                $returnQuery->select(
                     'sku',
                     DB::raw('group_concat(products.id) as id'),
                     DB::raw('group_concat(' . $data['field'] . ') as ' . $data['field']),
                     DB::raw('group_concat(products.name) as name'),
-                    DB::raw('group_concat(r.id) as retailer_id'))
-                ->groupBy('sku');
+                    DB::raw('group_concat(r.id) as retailer_id'));
+            }
+            $returnQuery->groupBy('sku');
+            return $returnQuery;
         }
     }
 
@@ -68,7 +78,7 @@ public function fields(NovaRequest $request)
                     array_push($fields,
                         Text::make($retailer . ' ' . $data['field'], function () use ($count, $data) {
                             $field = $data['field'];
-                            $fields = explode(',', $this->$field);
+                            $fields = explode(',', $this[$field]);
                             if (count($fields) < $count + 1) {
                                 return null;
                             }
@@ -116,7 +126,10 @@ public function actions(NovaRequest $request)
             $data = self::getDataFromUrl();
             $retailers = self::getRetailers();
             return [
-                \App\Nova\Actions\ChangeValue::make($data['field'], $data['retailer'], $retailers),
+                \App\Nova\Actions\ChangeValue::make($data['field'], $data['retailer'], $retailers)
+                ->confirmText('This action is used to change the value of the previously selected field in the previously selected retailer to the value of the field in the newly selected retailer')
+                ->confirmButtonText('Change')
+                ->cancelButtonText("Don't change"),
             ];
         }
     }