Laravel 4 数据库种子不起作用

Question

我遵循这个教程：http://fideloper.com/post/41750468389/laravel-4-uber-quick-start-with-auth-guide?utm_source=nettuts&utm_medium=article&utm_content=api&utm_campaign=guest_author

还有本教程：http://laravelbook.com/laravel-database-seeding/

但是，当我尝试运行 php artisan db:seed 时，没有任何反应。

我试试这个：

<?php
    // app/database/seeds/groups.php
    return array(
        'table' => 'groups',
        array(
            'name' => 'Administrador',
            'description' => '<p>Permissão total no sistema</p>',
            'created_at' => new DateTime,   
            'updated_at' => new DateTime
        ),
        array(
            'name' => 'Moderadores',
            'description' => '<p>Podem apenas postar e moderar comentários</p>',
            'created_at' => new DateTime,   
            'updated_at' => new DateTime
        )
    );

接下来：php artisan db:seed。

php artisan db:seed --env=local
Database seeded!

但是：

mysql> select * from groups;
Empty set (0.00 sec)

Answer 1

本教程中的示例是错误的 - 因为种子在 Beta 1 和 Beta 2 之间的工作方式发生了变化。

将您的 DatabaseSeeder.php 文件更改为此 - 它适用于本教程：

<?php

class DatabaseSeeder extends Seeder {

    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        $this->call('UserTableSeeder');
    }

}

class UserTableSeeder extends Seeder {

    public function run()
    {
        DB::table('users')->delete();
        User::create(array(
                'id' => 1,
                'username' => 'firstuser',
                'password' => Hash::make('first_password'),
                'created_at' => new DateTime,
                'updated_at' => new DateTime
        ));
        User::create(array(
                'id' => 2,
                'username' => 'seconduser',
                'password' => Hash::make('second_password'),
                'created_at' => new DateTime,
                'updated_at' => new DateTime
        ));    
    }
}

现在运行php artisan db:seed - 它会工作。

Answer 2

如果@The Shift Exchange 返回诸如 "Class User not found" 之类的错误，您可以尝试

DB::table('users')->insert(array(...)) 

而不是

User::create(array(...))

Answer 3

创建您的播种机：

<?php

// NoticesTableSeeder.php    
class NoticesTableSeeder extends Seeder {

    public function run()
    {
        DB::table('notices')->truncate();

        $notices = [
            ['title' => 'Our Web Page Is Back Online!', 'body' => 'Our web site is online again. Thanks for visiting.', 'created_at' => new DateTime],
            ['title' => 'Sample New Notice 1', 'body' => 'Sample new notice content.', 'created_at' => new DateTime],
            ['title' => 'Sample New Notice 2', 'body' => 'Sample new notice content.', 'created_at' => new DateTime],
            ['title' => 'Sample New Notice 3', 'body' => 'Sample new notice content.', 'created_at' => new DateTime],
            ['title' => 'Sample New Notice 4', 'body' => 'Sample new notice content.', 'created_at' => new DateTime]
        ];
        DB::table('notices')->insert($notices);
    }

}

将其添加到 DatabaseSeeder.php

// DatabaseSeeder.php
class DatabaseSeeder extends Seeder {

    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        ...
        $this->call('NoticesTableSeeder');
        $this->command->info('Notices table seeded!');
        ...
    }

}

更新您的自动加载器：

composer dump-autoload

为数据库播种：

php artisan db:seed

太好了，大功告成！