fastadmin 下拉多级分类

要实现下图效果

 一、先创建数据表

二、在目标的controll中引入use fast\Tree;

public function _initialize()
{
    parent::_initialize();
    $this->model = new \app\admin\model\zxdc\Categorys;

    $tree = Tree::instance();
    $tree->init(collection($this->model->order('id desc')->select())->toArray(), 'pid');
    $this->categorylist = $tree->getTreeList($tree->getTreeArray(0), 'name');
    $categorydata = [0 => ['id' => '0', 'name' => __('None')]];
    foreach ($this->categorylist as $k => $v) {
        $categorydata[$v['id']] = $v;
    }
    $this->view->assign("parentList", $categorydata);


}

public function index()
{
    //设置过滤方法
    $this->request->filter(['strip_tags']);
    if ($this->request->isAjax()) {
        //构造父类select列表选项数据
        $list = $this->categorylist;;
        $total = count($list);
        $result = array("total" => $total, "rows" => $list);
        return json($result);
    }
    return $this->view->fetch();
}

/**
 * 编辑
 */
public function edit($ids = null)
{
    $row = $this->model->get($ids);
    if (!$row) {
        $this->error(__('No Results were found'));
    }
    $adminIds = $this->getDataLimitAdminIds();
    if (is_array($adminIds)) {
        if (!in_array($row[$this->dataLimitField], $adminIds)) {
            $this->error(__('You have no permission'));
        }
    }
    if ($this->request->isPost()) {
        $params = $this->request->post("row/a");
        if ($params) {
        if ($params['pid'] == $row['id']) {
                $this->error(__('Can not change the parent to self'));
            }
            $params = $this->preExcludeFields($params);
            $result = false;
            Db::startTrans();
            try {
                //是否采用模型验证
                if ($this->modelValidate) {
                    $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                    $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.edit' : $name) : $this->modelValidate;
                    $row->validateFailException(true)->validate($validate);
                }
                $result = $row->allowField(true)->save($params);
                Db::commit();
            } catch (ValidateException $e) {
                Db::rollback();
                $this->error($e->getMessage());
            } catch (PDOException $e) {
                Db::rollback();
                $this->error($e->getMessage());
            } catch (Exception $e) {
                Db::rollback();
                $this->error($e->getMessage());
            }
            if ($result !== false) {
                $this->success();
            } else {
                $this->error(__('No rows were updated'));
            }
        }
        $this->error(__('Parameter %s can not be empty', ''));
    }
    $this->view->assign("row", $row);
    return $this->view->fetch();
}

修改和添加下面两个方法

三、

1、在目标js中，添加代码，去掉首页html字符

2、 表格字段居左，这样是为了看效果更加明显

{field: 'name', title: __('Name'), operate: 'LIKE', align:'left'},

四，在目标view中修改add.html和edit.html的pid代码

add.html

    {:__('Pid')}:
    

        
            {foreach name="parentList" item="vo"}
            {$vo.name}
            {/foreach}
        

    

edit.html

    {:__('Pid')}:
    

        
            {foreach name="parentList" item="vo"}
            {$vo.name}
            {/foreach}
        
    

完成上面步骤后，下拉分类就已完成，但在添加分类商品时，在编辑时会出现selepage未选中状态，还要进行修改

一、分类商品中用了zxdc_categorys_id字段来做分类ID，在add添加时一切正常，在edit时要进行修改，在分类商品的controall中重写edit方法，把分类数值获取下发

/**
 * 编辑
 */
public function edit($ids = null)
{
    $test = new \app\admin\model\zxdc\Categorys;
    $tree = Tree::instance();
    $tree->init(collection($test->order('id desc')->select())->toArray(), 'pid');
    $this->categorylist = $tree->getTreeList($tree->getTreeArray(0), 'name');
    $categorydata = [0 => ['id' => '0', 'name' => __('None')]];
    foreach ($this->categorylist as $k => $v) {
        $categorydata[$v['id']] = $v;
    }
    $this->view->assign("parentList", $categorydata);

    $row = $this->model->get($ids);
    if (!$row) {
        $this->error(__('No Results were found'));
    }
    $adminIds = $this->getDataLimitAdminIds();
    if (is_array($adminIds)) {
        if (!in_array($row[$this->dataLimitField], $adminIds)) {
            $this->error(__('You have no permission'));
        }
    }
    if ($this->request->isPost()) {
        $params = $this->request->post("row/a");
        if ($params) {
            $params = $this->preExcludeFields($params);
            $result = false;
            Db::startTrans();
            try {
                //是否采用模型验证
                if ($this->modelValidate) {
                    $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                    $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.edit' : $name) : $this->modelValidate;
                    $row->validateFailException(true)->validate($validate);
                }
                $result = $row->allowField(true)->save($params);
                Db::commit();
            } catch (ValidateException $e) {
                Db::rollback();
                $this->error($e->getMessage());
            } catch (PDOException $e) {
                Db::rollback();
                $this->error($e->getMessage());
            } catch (Exception $e) {
                Db::rollback();
                $this->error($e->getMessage());
            }
            if ($result !== false) {
                $this->success();
            } else {
                $this->error(__('No rows were updated'));
            }
        }
        $this->error(__('Parameter %s can not be empty', ''));
    }
    $this->view->assign("row", $row);
    return $this->view->fetch();
}

二、在对应的view的edit.html中，修改

    {:__('Zxdc_categorys_id')}:
    

        
            {foreach name="parentList" item="vo"}
            {$vo.name}
            {/foreach}