3'foreign_key_constraints'=>true, 4], Read & Write Connections Sometimes you may wish to use one database connection for SELECT statements, and another for INSERT, UPDATE, and DELETE statements. Laravel makes this a breeze, and the proper connections will always be used whether you are using...
3'foreign_key_constraints'=>true, 4], Configuration Using URLs Typically, database connections are configured using multiple configuration values such ashost,database,username,password, etc. Each of these configuration values has its own corresponding environment variable. This means that when configuring...
注册数据填充 database/seeds/DatabaseSeeder.php 代码语言:javascript 代码运行次数:0 运行 AI代码解释 <?php use Illuminate\Database\Seeder; class DatabaseSeeder extends Seeder { /** * Seed the application's database. * * @return void */ public function run() { $this->call(UsersTableSeeder:...
它会在 database/migrations 目录下创建一个新的数据库迁移文件 create_products_table.php,更改 up 方法。 publicfunctionup(){Schema::create('products',function(Blueprint$table){$table->increments('id');$table->integer('user_id');$table->string('name');$table->integer('price');$table->intege...
1 return $this->hasOne('App\Phone', 'foreign_key', 'local_key'); 如果我们要在 Phone 模型上定义一个反向关联,此关联能够让我们访问拥有此电话的 User 模型。我们可以定义与 hasOne 关联相对应的 belongsTo 方法 1 <?php 2 3 namespace App; 4 5 use Illuminate\Database\Eloquent\Model; 6 7 ...
publicfunctionhasOne($related,$foreignKey=null,$localKey=null) 其中,第一个参数是关联模型的类名,第二个参数是关联模型类所属表的外键,这里对应的是user_profiles表的user_id字段,第三个参数是关联表的外键关联到当前模型所属表的哪个字段,这里对应的是users表的id字段。为什么我们不需要指定 Laravel 就能完成这...
'database' => env('DB_DATABASE', database_path('database.sqlite')), 'prefix' => '', 'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true), ], 'mysql' => [ 'driver' => 'mysql', 'host' => env('DB_HOST', '172.16.0.224'), ...
To get started, create a new class in yourapp/database/migrations/directory. If you want to make sure this migration gets executed last, you can name it something like9999_99_99_999999_create_foreign_keys.php(this might be slightly overdone, but you get the idea). ...
($datas); }}class PhoneTableSeeder extends Seeder{ /** * Run the database seeds. * * @return void */ public function run() { $faker = Faker\Factory::create(); $merchant_ids = \App\Merchant::lists('id')->toArray(); $datas = []; foreach (range(1, 20) as $key => $...
I'm trying to run the migration, but I'm getting a SQL error that the "specified key was too long"Starting with Laravel 5.4, the default database character set is now utf8mb4. If you're using older versions of some databases (MySQL below 5.7.7, or MariaDB below 10.2.2) with ...