【php】laravel学习笔记-表单验证

1 laravel restfull链接参数验证

说明

链接的参数默认是不能参与请求类的验证的，但restfull风格的参数基本集成在链接上，这时是需要验证的

环境参数

参数	说明
laravel 5.8	这个就不说明了

开始

生成请求文件, 命令行输入 php artisan make:request GenerateCreditPreOrder :

	<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class GenerateCreditPreOrder extends FormRequest
{
    protected function validationData()
    {
         return array_merge(
            $this->route()->parameters(),
            $this->input()
        );

    }

    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [

        ];
    }
}

然后在类文件中加入

protected function validationData()
{
    return $this->route()->parameters();
}

方法来重写validationData

• 解决思路来自

2 自己定义规则

 生成规则文件php artisan make:rule GoodsMustbeExits，会生成这个文件App/Rules/GoodsMustbeExits :

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;

class GoodsMustbeExits implements Rule
{
    /**
     * Create a new rule instance.
     *
     * @return void
     */
    public function __construct()
    {

    }

    /**
     * Determine if the validation rule passes.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    public function passes($attribute, $value)
    {
        // 
    }

    /**
     * Get the validation error message.
     *
     * @return string
     */
    public function message()
    {
        return '//';
    }
}

其中passes方法用来定义处理的逻辑，返回 boolean，message方法则定义错误消息,attribute和value 为要验证的参数名和参数值。这是示例:

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;

class GoodsMustbeExits implements Rule
{
    /**
     * Create a new rule instance.
     *
     * @return void
     */
    public function __construct()
    {

    }

    /**
     * Determine if the validation rule passes.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    public function passes($attribute, $value)
    {
        $aop = $this->getAopInstance();
        $Goodes = Goods::where('id', $value)
            ->where('status', 1)
            ->get();
        return $Goodes->isEmpty() ? false : true;
    }

    /**
     * Get the validation error message.
     *
     * @return string
     */
    public function message()
    {
        return '这个商品不存在';
    }
}

然后在请求层进行验证(goods_id为上传的参数)

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use App\Rules\GoodsMustbeExits;

class GenerateCreditPreOrder extends FormRequest
{
    protected function validationData()
    {
        return $this->route()->parameters();
    }

    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'goods_id' => ['required', new GoodsMustbeExits()]
        ];
    }
}