a) 如果需要添加多个列,则需要在终端中添加以下命令: php artisanmake:migration add_multiple_column_to_notes b) 上面的命令将创建一个新的迁移文件,因此需要转到数据库/迁移文件夹,打开文件并根据您的需要添加列: Laravel Migration在现有表中添加多列 c) 最后,运行下面的命令在数据库表中添加列 php artisan m...
日期时间dateTime($column, $precision = 0)datetime(精度) datetime 日期时间dateTimeTz($column, $precision = 0)datetime 时间戳timestamp($column, $precision = 0)timestamp用使用useCurrent使用当前时间 时间戳timestampTz($column, $precision = 0)timestamp 时间戳实现timestamps($precision = 0){...}ti...
$data= $data->addSelect(DB::raw("'fakeValue' as fakeColumn")); $data= $data->orderBy('items.id')->get(); @varprotectedpublicfunctiongetTypeAttribute(){return Now update your query to use the model instead of DB::select. Make sure to use the model at the top of your contro...
publicfunctiongetFullNameAttribute(){return$this->isVerifiedClient() ?$this->getFullNameLong() :$this->getFullNameShort(); }publicfunctionisVerifiedClient(){returnauth()->user() &&auth()->user()->hasRole('client') &&auth()->user()->isVerified(); }publicfunctiongetFullNameLong(){return...
Laravel Collection group by one column and sum another column within each group Ask Question Asked 3 years, 8 months ago Modified 3 months ago Viewed 2k times Part of PHP Collective Report this ad2 I have a collection of data which are required to be processed to be able to generate...
public function update(array $values) { //数据库连接的Query Builder实例,执行 update 方法 return $this->toBase()->update($this->addUpdatedAtColumn($values)); } 而Eloquent Builder依赖的还是数据库连接的Query Builder实例去最后执行的数据库update。 Eloquent Model新增 ...
public function where($column, $operator = null, $value = null, $boolean = 'and') { //where的参数可以是一维数组或者二维数组 //应用一个条件一维数组['name' => 'James'] //应用多个条件用二维数组[['name' => 'James'], ['age' => '28']] ...
->after('column') 将此字段放置在其它字段 "之后" (MySQL) ->autoIncrement() 将 INTEGER 类型的字段设置为自动递增的主键 ->charset('utf8') 指定一个字符集 (MySQL) ->collation('utf8_unicode_ci') 指定列的排序规则 (MySQL/SQL Server)
// Group products by the “name” column ->groupBy('name') // Retrieve products from the table as an array of objects ->get(); 1. 2. 3. 4. 5. 联结–join Laravel 的Query Builder支持数据库所有类型的 Join 语句。 联结语句用于组合具有这些表共同值的多个表中的记录。 例如有两个表users和...
Migrations are like version control for your database, allowing your team to define and share the application's database schema definition. If you have ever had to tell a teammate to manually add a column to their local database schema after pulling in your changes from source control, you'...