而Eloquent Builder依赖的还是数据库连接的Query Builder实例去最后执行的数据库update。 Eloquent Model新增 performInsert 执行模型新增操作 protected function performInsert(Builder $query) { if ($this->fireModelEvent('creating') === false) { return false; } //设置created_at和updated_at属性 if ($this...
Query Builder Introduction Selects Joins Advanced Wheres Aggregates Raw Expressions Inserts Updates Deletes Unions Pessimistic Locking Introduction The database query builder provides a convenient, fluent interface to creating and running database queries. It can be used to perform most database operations...
The Laravel query builder can handle these as well:DB::table('users') ->where('name', '=', 'John') ->orWhere(function($query) { $query->where('votes', '>', 100) ->where('title', '<>', 'Admin'); }) ->get();The query above will produce the following SQL:...
Database: Query Builder - Laravel中文网 , laravel中文文档。Laravel 是一个具有表现力、优雅语法的 Web 应用程序框架. Laravel 是构建现代全栈 Web 应用程序的最佳选择.
You may also specify a custom key column for the returned array:$roles = DB::table('roles')->lists('title', 'name'); foreach ($roles as $name => $title) { echo $title; }AggregatesThe query builder also provides a variety of aggregate methods, such as count, max, min, avg, ...
Sorting a query based on a request:/users?sort=id: $users=QueryBuilder::for(User::class) ->allowedSorts('id') ->get();// all `User`s sorted by ascending id Read more about sorting features like: custom sorts, sort direction, ... ...
Sorting a query based on a request:/users?sort=id: $users=QueryBuilder::for(User::class) ->allowedSorts('id') ->get();// all `User`s sorted by ascending id Read more about sorting features like: custom sorts, sort direction, ... ...
例如,如果数据库表中有一个名为"custom_attribute"的字段,可以在模型中定义一个与之对应的属性。 构建查询:使用Laravel的查询构建器(Query Builder)或ORM功能,可以构建按自定义属性的查询。查询构建器提供了一系列方法,用于指定查询条件、排序方式等。例如,可以使用where方法指定自定义属性的值,使用orderBy方法指定排序...
Database: Query BuilderIntroductionLaravel's database query builder provides a convenient, fluent interface to creating and running database queries. It can be used to perform most database operations in your application and works on all supported database systems.The...
目前, 使用whereExists()需要使用闭包来配置嵌套查询. 幸运的是, 在Laravel 10中, 现在可以将Eloquent Builder作为一个嵌套查询。它可以实现自定义构建器方法,模型作用域等的使用。 例如,我们通常会这样做,如果我们想使用whereExists(): Order::whereExists(function($query){$query->from('products')->whereColumn...