The migration file contains two key methods:up()anddown(). Theup()method defines the changes you want to apply to your database, such as creating a table or adding a column. Thedown()method does the opposite: it reverses those changes, such as dropping the table or removing the column....
useIlluminate\Database\Migrations\Migration; useIlluminate\Database\Schema\Blueprint; useIlluminate\Support\Facades\Schema; /** * php artisan make:migration alter_sources_description --table=要改的表名称 * php artisan migrate * php artisan migrate:rollback --step=1 # 回滚变更 */ classAlterSources...
symfony Laravel迁移-删除列down函数用于回滚，必须在up函数中添加此dropColumn，因为它是运行迁移时要执行...
Each migration filename contains a timestamp that allows Laravel to determine the order of the migrations:1php artisan make:migration create_flights_tableLaravel will use the name of the migration to attempt to guess the name of the table and whether or not the migration will be creating a ...
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1php artisan make:migration create_flights_tableLaravel will use the name of the migration to attempt to guess the name of the table and whether or not the migration will be creating a new table. If Laravel is able to determine the table name from the migration name, Laravel will pre-...
* * @return void */ public function down() { /* Restore the 'generated_conversions' field in the 'custom_properties' column if you removed them in this migration Media::query() ->whereRaw("JSON_TYPE(generated_conversions) != 'NULL'") ->update([ 'custom_properties' => DB::raw("JSON...
The best solution would be to upgrade your DB. If that's not currently possible, you can change your published migration file to use a text column instead:- $table->json('options')->nullable(); + $table->text('options')->nullable();...
3. 使用Migration操作数据库数据库表明约定使用复数形式 使用migration创建数据表usersphp artisan make:migration create_table_users --create=users # laravel5.4 中此语句语法报错 [ErrorException] include(/Users/junchow/Code/laravel/vendor/composer/../../database/migrations/2017_06_22_073036_create_table_...
A superb inversion of control container, expressive migration system, and tightly integrated unit testing support give you the tools you need to build any application with which you are tasked.Features: Expressive, beautiful syntax: Value elegance, simplicity, and readability? You’ll fit right in...