api/app/Admin/Forms/CouponSet.php

<?php

namespace App\Admin\Forms;

use Dcat\Admin\Widgets\Form;
use Dcat\Admin\Traits\LazyWidget;
use Dcat\Admin\Contracts\LazyRenderable;

// 礼劵设置
class CouponSet extends Form implements LazyRenderable
{
    use LazyWidget;
    /**
     * Handle the form request.
     *
     * @param array $input
     *
     * @return mixed
     */
    public function handle(array $input)
    {
        //
        $obj = \App\Models\Config::where("key", "coupon_configs")->first();
        if(!$obj) {
            $obj = new \App\Models\Config();
            $obj->key = "coupon_configs";
        }
        $obj->val = json_encode($input);
        $obj->save();
        //
        return $this
            ->response()
            ->success('修改成功')
            ->refresh();
    }

    /**
     * Build a form here.
     */
    public function form()
    {
        //
        $this->text("img_title", "排期标题")->required();
        $this->image("img", "排期图片")->uniqueName()->removable(false)->autoUpload()->required();
        $this->text("desc_title", "规则标题")->required();
        $this->textarea("desc", "规则文案")->required();
        $this->textarea("pop_desc", "弹窗规则文案")->required();
        //
    }

    /**
     * The data of the form.
     *
     * @return array
     */
    public function default()
    {
        //
        $obj = \App\Models\Config::where("key", "coupon_configs")->first();
        if ($obj && $obj->val) {
            $data = json_decode($obj->val, true);
            if ($data) {
                return $data;
            }
        }
        return [
            'img_title'=> '限定活动排期',
            'img'=> '',
            'desc_title'=> '如何获得更多礼劵？',
            'desc'=> '',
            'pop_desc'=> '',
        ];
    }
}