复合键验证不起作用：Laravel 5.2

Question

到目前为止我尝试了什么？

我的请求类位于

之下

class SubCategoryRequest extends Request
{
    public function authorize()
    {
        if(\Auth::user()->RoleID == \App\Enumeration\Role\RoleType::Admin) {
            return true;
        }
        return false;
    }

    public function rules()
    {
        $rules = [];
        $rules['SubCategory'] = 'required|max:25|min:5|unique:tblsubcategory,CategoryID';
        $rules['CategoryID'] = 'required';
        return $rules;
    }

    public function response(array $errors){
        return \Redirect::back()->withErrors($errors)->withInput();
    }
}

以下是数据库表架构

CREATE TABLE `tblsubcategory` (
  `SubCategoryID` int(11) NOT NULL,
  `SubCategory` varchar(25) NOT NULL,
  `CategoryID` int(11) NOT NULL,
  `IsActive` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

ALTER TABLE `tblsubcategory`
  MODIFY `SubCategoryID` int(11) NOT NULL AUTO_INCREMENT;

以下是唯一键约束

ALTER TABLE `tblsubcategory`
  ADD PRIMARY KEY (`SubCategoryID`),
  ADD UNIQUE KEY `UK_tblSubCategory_SubCategory_CategoryID` (`CategoryID`,`SubCategory`);

问题

我错过了什么吗？

Answer 1

我不明白你的问题，但你的复合键是CategoryID吗？所以你想要验证CategoryID和SubCategory的输入字段不应该是空的＆amp;输入数据时要独特吗？你可以发布你的HTML表单吗？

无论如何，您可以在Request类中尝试这样的事情：

public function rules()
{
    return [
        'txtSubCategory' => 'required|max:25|min:5|unique:tblsubcategory,SubCategory',
        'txtCategoryID' => 'required|unique:tblsubcategory,CategoryID'
    ];
}

如果违反规则，则显示消息：

public function messages () {
    return [
        'txtSubCategory.required'  => 'Sub category name cannot be empty !!',
        'txtSubCategory.unique'    => 'Sub category name is exist !!',
        'txtCategoryID.required' => 'Category ID cannot be empty !!',
        'txtCategoryID.unique'    => 'Category ID is exist !!'
    ];
}

然后，您的html表单必须是：

<form action="" method="">
 <div>
  <label>Sub Category</label>
  <input name="txtSubCategory" placeholder="Please Enter Sub Category" />
 </div>

 <div>
  <label>Category ID</label>
  <input name="txtCategoryID" placeholder="Please Enter Category ID" />
 </div>
</form>

并使用此功能在您的html页面中显示错误消息：

@if (count($errors) > 0)  
    <div>
        <ul>
            @foreach ($errors->all() as $error)
            <li>{!! $error !!}</li>
            @endforeach
        </ul>
    </div>
@endif

Answer 2

的 Reference. As per laracasts.com

方法＃1

转到课程ValidationServiceProvider，您可以在下面提到的路径中找到它。

  

供应商\ laravel \框架\ SRC \照亮\验证\ ValidationServiceProvider.php

在此课程中添加以下方法

public function boot() {
    $this->app['validator']->extend('composite_unique', 
                                 function ($attribute, $value, $parameters, $validator) {
        // remove first parameter and assume it is the table name
        $table = array_shift( $parameters ); 

        // start building the conditions
        $fields = [ $attribute => $value ]; 

        // iterates over the other parameters 
        //and build the conditions for all the required fields
        while ( $field = array_shift( $parameters ) ) {
            $fields[ $field ] = \Request::get( $field );
        }

        // query the table with all the conditions
        $result = \DB::table( $table )->select( \DB::raw( 1 ) )->where( $fields )->first();

        return empty( $result ); // edited here
    });
}

最后规则如下所示。

public function rules()
{
    return [
    'SubCategory' => 'required|max:25|min:5|composite_unique:tblsubcategory,CategoryID',
    'CategoryID'  => 'required|min:1'
    ];
}

方法＃2

规则功能必须如下

public function rules()
{
    // extends Validator only for this request
    \Validator::extend( 'composite_unique', 
                            function ( $attribute, $value, $parameters, $validator ) {

        // remove first parameter and assume it is the table name
        $table = array_shift( $parameters ); 

        // start building the conditions
        $fields = [ $attribute => $value ]; // current field, SubCategory in my case

        // iterates over the other parameters 
        //and build the conditions for all the required fields
        while ( $field = array_shift( $parameters ) ) {
            $fields[ $field ] = $this->get( $field );
        }
        // query the table with all the conditions
        $result = \DB::table( $table )->select( \DB::raw( 1 ) )->where( $fields )->first();

        return empty( $result ); // edited here
    }, 'Category and Sub Category combination already exists' );

    return [
    'SubCategory' => 'required|max:25|min:5|composite_unique:tblsubcategory,CategoryID',
    'CategoryID' => 'required|min:1'
    ];
}