问Laravel updateOrCreate提出了一些条件ENEloquent 是一个 ActiveRecord ORM 框架，ORM 全称是 Object Relational Mapping，意为对象关系映射，用于实现面向对象编程语言里不同类型系统的数据之间的转换，简单来说，它会构建类与数据表之间的映射关系，从而建立起一个可在编程语言里使用的「虚拟对象数据库」。「ActiveRecord」是 ORM 的一种实现模式，Eloque...
其实也就是一个嵌套的 EXISTS 查询: 此外,还有一个 orHas 方法,顾名思义,它会执行一个 OR 查询,比如我们想要过滤包含评论或标签的文章: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 $posts = Post::has('comments')->orHas('tags')->get(); 如果你想要通过更复杂的关联查询过滤模型实例,还可...
15 public function update(Request $request) 16 { 17 // $request->user() 18 } 19}Determining If The Current User Is AuthenticatedTo determine if the user making the incoming HTTP request is authenticated, you may use the check method on the Auth facade. This method will return true if th...
If you would like to create a validator instance manually but still take advantage of the automatic redirection offered by the HTTP request's validate method, you may call the validate method on an existing validator instance. If validation fails, the user will automatically be redirected or, in...
return$this->query->update($attributes); } findOrNew 方法 publicfunctionfindOrNew($id,$columns=['*']) { if(is_null($instance=$this->find($id,$columns))){ $instance=$this->related->newInstance(); $this->setForeignAttributesForCreate($instance); ...
Create a timelapse You can create a timelapse from a sequence of images by using the asTimelapseWithFramerate method on the exporter FFMpeg::open('feature_%04d.png') ->export() ->asTimelapseWithFramerate(1) ->inFormat(new X264) ->save('timelapse.mp4'); Multiple inputs You can open mul...
接口更接近SQL原生的使用方法,比如:where/join/select/insert/delete/update等,都很容易在数据库的体系内找到相应的操作或指令;EloquentBuilder是对Builder的再封装,EloquentBuilder在Builder的基础之上,定义了一些更复杂,但更便捷的描述接口(见官方文档【Eloquent ORM - 快速入门】一章。),比如:first/firstOrCreate/...
| | GET|HEAD | tasks/create | tasks.create | App\Http\Controllers\TasksController@create | web | | | DELETE | tasks/{tasks} | tasks.destroy | App\Http\Controllers\TasksController@destroy | web | | | PUT|PATCH | tasks/{tasks} | tasks.update | App\Http\Controllers\TasksController@updat...
As you can see, this method takes a closure as an argument, which makes it possible to update a value based upon its old value.Deleting a propertypublic function up(): void { $this->migrator->delete('general.timezone'); }Checking a property if it existsThere might be times when you ...
Sometimes you may need to create more advanced where clauses such as "where exists" or nested parameter groupings. The Laravel query builder can handle these as well. To get started, let's look at an example of grouping constraints within parenthesis:DB::table('users') ->where('name', ...