阶段性更新

app/Admin/Controllers/Article/IndexController.php

@@ -25,6 +25,10 @@ class IndexController extends AdminController
                     return $model->where('status', 1)->whereIn('type', [Category::TYPE_ARTICLE, Category::TYPE_SHOW]);
                 }, '所有分类'));
             });
+            $filter->column(1 / 2, function ($filter) {
+                $filter->equal('position', '定位')
+                       ->select(Article::POSITIONS);
+            });
 
             $filter->disableIdFilter();
         });
@@ -60,6 +64,7 @@ class IndexController extends AdminController
                  'required' => '必须选择所属分类',
                  'min'      => '必须选择所属分类',
              ]);
+
         //        $form->text('keywords', '关键词')->rules('nullable');
         $form->textarea('description', '内容简介')->rules('max:350');
         $form->image('cover', '封面')
@@ -71,7 +76,19 @@ class IndexController extends AdminController
         $form->number('sort', '序号')->default(0)->rules('required', ['required' => '序号必须填写'])->help('倒序优先');
         $form->switch('status', '状态')->default(1);
         $form->text('url', '外链地址');
+        $form->select('position', '定位')
+             ->options(Article::POSITIONS);
         $form->datetime('created_at', '发布时间');
+        $form->saved(function ($form) {
+            if ($form->position) {
+                $model = $form->model();
+                Article::where('position', $form->position)
+                       ->where('id', '<>', $model->id)
+                       ->update([
+                           'position' => '',
+                       ]);
+            }
+        });
 
         return $form;
     }