update:优化基础组件

extend/catcher/library/form/components/AreaTrait.php

@@ -0,0 +1,50 @@
+<?php
+namespace catcher\library\form\components;
+
+use catcher\traits\db\RewriteTrait;
+use FormBuilder\Factory\Elm;
+
+trait AreaTrait
+{
+    public function area($field = 'area', $title = '地区', $props = [])
+    {
+        if (!count($props)) {
+            $props = self::props('name', 'id', [
+                'checkStrictly' => true
+            ]);
+        }
+
+        return self::cascader($field, $title)
+            ->options($this->getRegion(3))
+            ->props($props)
+            ->clearable(true)
+            ->filterable(true);
+    }
+
+    public function createValidate()
+    {
+        // TODO: Implement createValidate() method.
+        return Elm::validateStr();
+    }
+
+
+    /**
+     * 支持四级
+     * $level 1,2,3,4
+     * @time 2021年04月19日
+     * @param int $level
+     * @return mixed
+     */
+    protected function getRegion($level = 1)
+    {
+        $areaModel = new class extends \think\Model {
+            protected $name = 'region';
+
+            use RewriteTrait;
+        };
+
+        return $areaModel->where('level', '<=', $level)
+                        ->field(['id', 'name', 'parent_id'])
+                        ->select()->toTree();
+    }
+}