empty($parameters)||!is_null($this->getContextualConcrete($abstract));// If an instance of the type is currently being managed as a singleton we'll// just return an existing instance instead of instantiating new instances// so the developer can keep using the same objects instance every tim...
* @param \Closure|string|null $concrete * @param bool $shared * @return void */publicfunctionbind($abstract,$concrete=null,$shared=false){$this->dropStaleInstances($abstract);// If no concrete type was given, we will simply set the concrete type to the// abstract type. After that, the...
isempty在Flutter中的validator下显示错误 TextFormField( decoration: const InputDecoration( icon: const Icon(Icons.phone), hintText: 'Enter a phone number', labelText: 'Phone', ), validator: (value) { if (value!.isEmpty) { return 'Please enter phone number'; } return null; }, ), 用va...
return [key($definition), current($definition)]; } 如果$abstract已经绑定过,则取消绑定。 如果$concrete为null,则认为$abstract为可直接实例化的类名称($concrete = $abstract)。 如果$concrete不为Closure类型,则封装打包成Closure类型。这里这样做主要是方便后续一些操作的处理,统一类型。 注册绑定。实际就是放到...
publicfunctionall($keys=null) { // } ThehasMethod The$request->hasmethod will now returntrueeven if the input value is an empty string ornull. A new$request->filledmethod has been added that provides the previous behavior of thehasmethod. ...
errors = null; const constraints = this.getConstraints(); const errors = validate(this.$data.form, constraints); if (errors) { this.errors = errors; return; } // multiple file uploading this.lead = document.getElementById("leadform"); const formData = new FormData(this.lead); if (...
The field under validation must be missing or empty. A field is "empty" if it meets one of the following criteria:The value is null. The value is an empty string. The value is an empty array or empty Countable object. The value is an uploaded file with an empty path....
In order for eager loading of polymorphic relations eg Photo::with('imageable')->get(); it's necessary to return null if type is empty. class Photo extends Eloquent { protected $types = [ 'order' => 'App\Store\Order', 'staff' => 'App\Users\Staff' ]; public function imageable(...
* @return void */publicfunction__construct($basePath=null){if($basePath){$this->setBasePath($basePath);}$this->registerBaseBindings();$this->registerBaseServiceProviders();$this->registerCoreContainerAliases();} 没错在 Application 类的构造函数一共完成 3 个操作的处理功能: ...
\Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,+Backpack\CRUD\app\Http\Middleware\UseBackpackAuthGuardInsteadOfDefaultAuthGuard::class,], Why?spatie/laravel-permissionuses theAuthfacade for determining permissions with@can. TheAuthfacade uses the default guard defined inconfig/auth...