新增 preview 组件 & table 的excel 操作设置默认值

extend/catcher/library/table/ComponentsTrait.php

@@ -60,8 +60,28 @@ trait ComponentsTrait
     }
 
 
+    /**
+     * 多选组件
+     *
+     * @time 2021年05月03日
+     * @param array $options
+     * @param null $updateFields
+     * @return HeaderItem
+     */
     public function withSelectComponent(array $options, $updateFields = null): HeaderItem
     {
         return $this->component('select_', $updateFields ? : $this->attributes['prop'], $options);
     }
+
+    /**
+     * 预览组件
+     *
+     * @time 2021年05月03日
+     * @param null $field
+     * @return ComponentsTrait|HeaderItem
+     */
+    public function withPreviewComponent($field = null)
+    {
+        return $this->component('preview', $field ? : $this->attributes['prop']);
+    }
 }

extend/catcher/library/table/Table.php

@@ -211,7 +211,7 @@ class Table
      * @param string $usedModel
      * @return $this
      */
-    public function withUsedModelAndExcel(string $usedModel, array $excel): Table
+    public function withUsedModelAndExcel(string $usedModel, array $excel = []): Table
     {
         foreach ($excel as $e) {
             $this->excel[] = $e->render();