未找到 Laravel 4 迁移基表

Posted 2023-03-14

【中文标题】未找到 Laravel 4 迁移基表

【英文标题】：Laravel 4 migrate base table not found

【发布时间】：2013-10-16 09:48:58

【问题描述】：

我正在尝试制作以下教程：https://medium.com/on-coding/e8d93c9ce0e2

当谈到运行时：

php artisan migrate

我收到以下错误：

[Exception]                                                                        
SQLSTATE[42S02]: Base table or view not found: 1146 Table 'laravel.user' doesn't   
exist (SQL: alter table `user` add `id` int unsigned not null auto_increment prim  
ary key, add `username` varchar(255) null, add `password` varchar(255) null, add   
`email` varchar(255) null, add `created_at` datetime null, add `updated_at` datet  
ime null) (Bindings: array (                                                       
))

数据库连接正常，迁移表创建成功。如您在错误消息中所见，数据库名称已更改。

对我来说很奇怪的是，它试图改变表——它不存在——而不是创建它。

这是我的其他文件，例如 UserModel、Seeder、Miggation 和 DB Config。

创建用户表：

<?php

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateUserTable extends Migration 

/**
 * Run the migrations.
 *
 * @return void
 */
public function up()

    Schema::table('user', function(Blueprint $table)
    

        $table->increments("id");

        $table
            ->string("username")
            ->nullable()
            ->default(null);
        $table
            ->string("password")
            ->nullable()
            ->default(null);
        $table
            ->string("email")
            ->nullable()
            ->default(null);
        $table
            ->dateTime("created_at")
            ->nullable()
            ->default(null);
        $table
            ->dateTime("updated_at")
            ->nullable()
            ->default(null);

    );


/**
 * Reverse the migrations.
 *
 * @return void
 */
public function down()

    Schema::table('user', function(Blueprint $table)
    
        Schema::dropIfExists("user");
    );

用户模型：

use Illuminate\Auth\UserInterface;
use Illuminate\Auth\Reminders\RemindableInterface;

class User extends Eloquent implements UserInterface, RemindableInterface 

/**
 * The database table used by the model.
 *
 * @var string
 */
protected $table = 'user';

/**
 * The attributes excluded from the model's JSON form.
 *
 * @var array
 */
protected $hidden = array('password');

/**
 * Get the unique identifier for the user.
 *
 * @return mixed
 */
public function getAuthIdentifier()

    return $this->getKey();


/**
 * Get the password for the user.
 *
 * @return string
 */
public function getAuthPassword()

    return $this->password;


/**
 * Get the e-mail address where password reminders are sent.
 *
 * @return string
 */
public function getReminderEmail()

    return $this->email;

用户种子：

class UserSeeder extends DatabaseSeeder

public function run()

    $users = [
        [
            "username" => "ihkawiss",
            "password" => Hash::make("123456"),
            "email"    => "[e-mail]"
        ]
    ];

    foreach ($users as $user)
    
        User::create($user);
    

数据库播种机：

class DatabaseSeeder extends Seeder 

/**
 * Run the database seeds.
 *
 * @return void
 */
public function run()

    Eloquent::unguard();

    $this->call('UserSeeder');

数据库配置：

return array(

/*
|--------------------------------------------------------------------------
| PDO Fetch Style
|--------------------------------------------------------------------------
|
| By default, database results will be returned as instances of the PHP
| stdClass object; however, you may desire to retrieve records in an
| array format for simplicity. Here you can tweak the fetch style.
|
*/

'fetch' => PDO::FETCH_CLASS,

/*
|--------------------------------------------------------------------------
| Default Database Connection Name
|--------------------------------------------------------------------------
|
| Here you may specify which of the database connections below you wish
| to use as your default connection for all database work. Of course
| you may use many connections at once using the Database library.
|
*/

'default' => 'mysql',

/*
|--------------------------------------------------------------------------
| Database Connections
|--------------------------------------------------------------------------
|
| Here are each of the database connections setup for your application.
| Of course, examples of configuring each database platform that is
| supported by Laravel is shown below to make development simple.
|
|
| All database work in Laravel is done through the PHP PDO facilities
| so make sure you have the driver for your particular database of
| choice installed on your machine before you begin development.
|
*/

'connections' => array(

    'sqlite' => array(
        'driver'   => 'sqlite',
        'database' => __DIR__.'/../database/production.sqlite',
        'prefix'   => '',
    ),

    'mysql' => array(
        'driver'    => 'mysql',
        'host'      => 'localhost',
        'database'  => 'laravel',
        'username'  => 'root',
        'password'  => '',
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
    ),

    'pgsql' => array(
        'driver'   => 'pgsql',
        'host'     => 'localhost',
        'database' => 'database',
        'username' => 'root',
        'password' => '',
        'charset'  => 'utf8',
        'prefix'   => '',
        'schema'   => 'public',
    ),

    'sqlsrv' => array(
        'driver'   => 'sqlsrv',
        'host'     => 'localhost',
        'database' => 'database',
        'username' => 'root',
        'password' => '',
        'prefix'   => '',
    ),

),

/*
|--------------------------------------------------------------------------
| Migration Repository Table
|--------------------------------------------------------------------------
|
| This table keeps track of all the migrations that have already run for
| your application. Using this information, we can determine which of
| the migrations on disk have not actually be run in the databases.
|
*/

'migrations' => 'migrations',

/*
|--------------------------------------------------------------------------
| Redis Databases
|--------------------------------------------------------------------------
|
| Redis is an open source, fast, and advanced key-value store that also
| provides a richer set of commands than a typical key-value systems
| such as APC or Memcached. Laravel makes it easy to dig right in.
|
*/

'redis' => array(

    'cluster' => true,

    'default' => array(
        'host'     => '127.0.0.1',
        'port'     => 6379,
        'database' => 0,
    ),

),

);

希望有人可以在这里给我一个提示。

最好的问候 ihkawiss

【问题讨论】：

我现在已经设法让它工作了，但不幸的是只能通过一种解决方法。我创建了一个表用户，添加了一个不是由迁移创建的列，运行 php artisan migrate 。之后我删除了创建的列。

我偶然发现了同样的事情。 migration:create 使用“Schema::table”，需要将其更改为“Schema:create”。我认为这些模板可以在某处进行修改。

【参考方案1】：

在您的CreateUserTable 迁移文件中，您必须使用Schema::create 而不是Schema::table。

Schema::table 用于更改现有表，Schema::create 用于创建新表。

查看文档：

http://laravel.com/docs/schema#creating-and-dropping-tables http://laravel.com/docs/schema#adding-columns

所以您的用户迁移将是：

<?php

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateUserTable extends Migration 

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    
        Schema::create('user', function(Blueprint $table) 
        

            $table->increments("id",true);
            $table->string("username")->nullable()->default(null);
            $table->string("password")->nullable()->default(null);
            $table->string("email")->nullable()->default(null);
            $table->timestamps();

        );
    

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    
        Schema::dropIfExists("user");
    

【讨论】：

谢谢！为我工作！

【参考方案2】：

这种情况的根本原因可能是用于创建迁移php artisan migrate ... 的语法不完全正确。在这种情况下，--create 将无法正确获取，您将看到Schema::table 而不是预期的Schema::create。当像这样生成迁移文件时，您可能还缺少一些其他用于创建迁移的标记，例如 $table->increments('id'); 和 $table->timestamps();

例如，这两个命令不会像您预期的那样创建创建表迁移文件：

php artisan migrate:make create_tasks_table --table="tasks" --create
php artisan migrate:make create_tasks2_table --table=tasks2 --create

但是，该命令不会因错误而失败。相反，laravel 将使用Schema::table创建一个迁移文件

在创建新的迁移文件时，我总是只使用完整的语法，如下所示：

php artisan migrate:make create_tasks_table --table=tasks --create=tasks 

以避免任何此类问题。

【参考方案3】：

有时它是由自定义工匠命令引起的。其中一些命令可能会启动一些类。而且因为我们进行了回滚，所以找不到表。检查您的自定义工匠命令。您可以注释掉导致触发的行。运行 php artisan migrate 命令，然后取消注释。这是我必须做的。