Eloquent ORM 一、数据库模型 Ref:ORM框架使用优缺点 对象关系映射(Object Relational Mapping,简称ORM),主要实现程序对象到关系数据库数据的映射。 A . 简单:ORM以最基本的形式建模数据。比如ORM会将MySQL的一张表映射成一个Java类(模型),表的字段就是这个类的成员变量 B . 精确:ORM使所有的MySQL
问如果我在使用Mysql的Laravel中使用Query Builder而不是Eloquent ORM，那么模型仍然有用吗？EN对于模型的...
2 * Apply the scope to a given Eloquent query builder. 3 * 4 * @param \Illuminate\Database\Eloquent\Builder $builder 5 * @return void 6 */ 7public function apply(Builder $builder) 8{ 9 $model = $builder->getModel(); 10 11 $builder->whereNull($model->getQualifiedDeletedAtColumn(...
Anweb applicationalways needs to interact with a database and Laravel makes this task hassle free. A few tools that makeLaravelan awesome framework is the inclusion of “Query Builder and Eloquent ORM”. Through this blog I intend to share few quick pointers on these concepts. Query Builder: ...
public function __construct(QueryBuilder $query) { $this->query = $query; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 可见两者之间并没有继承的关系,而是Eloquent\Builder采用了代理模式对Query\Builder进行了操作 ...
No model events are fired when updating a set of models via the Eloquent query builder.Deleting An Existing ModelTo delete a model, simply call the delete method on the instance:1$user = User::find(1); 2 3$user->delete();Deleting An Existing Model By Key1User::destroy(1); 2 3...
scopePopular($query) { return $query->where('votes', '>', 100); } /** * 只查询 active 用户的作用域 * * @param \Illuminate\Database\Eloquent\Builder $query * @return \Illuminate\Database\Eloquent\Builder */ public function scopeActive($query) { return $query->where('active', 1);...
The Eloquent ORM included with Laravel provides a beautiful, simple ActiveRecord implementation for working with your database. Each database table has a corresponding "Model" which is used to interact with that table. Models allow you to query for data in your tables, as well as insert new ...
use Illuminate\Database\Eloquent\Builder;$posts = Post::whereDoesntHave('comments.author', function (Builder $query) { $query->where('banned', 0);})->get();多态关联查询要查询多态关联关系的存在,可以使用 whereHasMorph 和whereDoesntHaveMorph 方法。这些方法接受关联名称作为它们的第一个参数。
use Illuminate\Database\Eloquent\Builder; $posts = Post::whereDoesntHave('comments', function (Builder $query) { $query->where('content', 'like', 'code%'); })->get();您可以使用“点”符号对嵌套关系执行查询。 例如,以下查询将检索所有没有评论的帖子; 但是,有未被禁止的作者评论的帖子将包含...