岗位职称删除以后，再添加提示已经存在的问题修复

app/user/validate/PositionCheck.php

@@ -6,13 +6,28 @@
  */
 
 namespace app\user\validate;
-
+use think\facade\Db;
 use think\Validate;
 
 class PositionCheck extends Validate
 {	
+	// 自定义验证规则
+    protected function checkUnique($value, $rule, $data)
+    {
+        [$table, $field, $id] = explode(',', $rule);
+        $idField = $id ?: 'id';
+        $idValue = $data[$idField] ?? null;
+        $map = [
+            [$field, '=', $value],
+        ];
+        if (!is_null($idValue)) {
+            $map[] = [$idField, '<>', $idValue];
+        }
+        $map[] = ['status', '=', 1];
+        return !Db::name($table)->where($map)->count();
+    }
     protected $rule = [
-        'title' => 'require|unique:position',
+        'title' => 'require|checkUnique:Position,title,id',
         'work_price' => 'require|number',
         'group_id' => 'require',
         'id' => 'require'
@@ -20,7 +35,7 @@ class PositionCheck extends Validate
 
     protected $message = [
         'title.require' => '岗位名称不能为空',
-        'title.unique' => '同样的岗位名称已经存在',
+        'title.checkUnique' => '同样的岗位名称已经存在',
         'work_price.require' => '岗位工时单价不能为空',
         'work_price.number' => '岗位工时单价只能是整数',
         'group_id.require' => '至少要选择一个角色权限',