通过在控制器中添加新数据来动态更新验证规则

Question

我正在开发一个基于 Web 的应用程序，技术堆栈是：VueJS，用于表示层，Laravel（PHP）用于RESTFUL API服务，以及一个名为neo4j 的基于 nosql 图的数据库 。这是问题上下文，我有一个名为Post的模型，此处定义的属性共享所有帖子类型，因此它们都将拥有它：

use NeoEloquent;

use Spatie\Sluggable\HasSlug;

use Spatie\Sluggable\SlugOptions;

use Vinelab\NeoEloquent\Eloquent\SoftDeletes;

class Post extends NeoEloquent

{

protected $label = 'Post';

protected $dates = ['created_at', 'updated_at', 'deleted_at'];

/**

 * The attributes that are mass assignable.

 *

 * @var array

 */

protected $fillable = [

    'title',

    'slug',

    'body',

    'status',

    'image',

    'published_at',

    'read_time',

    'isModerate',

    'link',

    'external_id'

];

/**

protected $hidden = ['remember_token'];

/**

 * relations

 */

public function authors()

{

    return $this->belongstoMany('App\User', 'AUTHOR');

}

public function getSlugOptions(): SlugOptions

{

    return SlugOptions::create()->generateSlugsFrom('title')->saveSlugsTo('slug');

}

//Post type

public function contentType(){

  return $this->hasOne('App\ContentType','IS_OF_TYPE');

}

}

PostType：这里的类型可以是文件、链接、事件等。例如：[name=>'Event','description'=>'description','slug'=>'event']

class PostType extends NeoEloquent

{

    protected $label='ContentType';

    protected $dates=['created_at','updated_at','deleted_at'];

    protected $fillable=[

      "name",

      "description",

      "slug"

    ];

//Ce input contentype sera associe a plusieurs input fields

    public function customFields(){

      return $this->belongsToMany('App\CustomField',"HAS_FIELD");

    }

    public function post(){

      return $this->belongsToMany('App\Post','IS_OF_TYPE');

    }

}

最后是CustomField模型：

class CustomField extends NeoEloquent

{

  protected $label="CustomType";

  protected $dates=["created_at","updated_at","deleted_at"];

  protected $fillable=[

    "field_name",

    "field_type",

    "field_order",

    "validation_rules"

  ];

  public function contentTypes(){

    return $this->belongsToMany('App\CustomField','HAS_FIELD');

  }

}

Answer 1

您可以使用请求中的数据动态构建验证规则：use Illuminate\Http\Request;class StorePost extends FormRequest{    public function authorize()    {        return true;    }    public function rules(Request $request)    {        $rules = [            'title' => 'required|string|min:1',            'body' => 'required',            'status' => 'required',            'image' => 'sometimes|image',            'published_at' => 'required',            'link' => 'required_if:type,==,RSS|required_if:type,==,LINK',            'external_id' => 'sometimes'        ];        if($typeSlug = $request->get('type'))        {            $type = PostType::where('slug', $typeSlug)->with('customFields');            // map custom fields into a `['name' => 'rules']` format            $customFieldRules = $type->customFields->mapWithKeys(function($customField) {                return [$customField->field_name => $customField->validation_rules];            });            $rules = array_merge($rules, $customFieldRules);        }        return $rules;    }}