就像标题所述，我在查询和Laravel方面遇到问题。由于某些原因，前缀“ dev_”会添加到我的列名中（仅列名，而不是表或其他）。 当然会导致以下错误，因为该列没有“ dev_”前缀
该问题发生在运行Apache和Laravel 5.0.18的Ubuntu服务器上。 我将其设置为可以处理多个数据库（一个数据库用于生产，一个数据库用于开发）。 这是我的config / database.php
的连接
...
'default' => 'mysql',
'connections' => [
'sqlite' => [
'driver' => 'sqlite',
'database' => storage_path().'/database.sqlite',
'prefix' => '',
],
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'strict' => false,
],
'mysqldev' => [
'driver' => 'mysql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DEV_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'strict' => false,
],
]
...
生产数据库（mysql）和开发数据库（mysqldev）在表，列等方面是相同的... 我通过雄辩的模型在我的api中使用它们（每次一个模型用于prod，每次一个模型用于dev）我已经为我的dev api设置了一个路由组前缀，该路由组的前缀与prod api相同，但使用的是开发模型。 对于prod API来说，它工作得很好，但是在dev API上，发生了上述问题。 这是我的模特， 用户：
<?php namespace pgc;
use Illuminate\Auth\Authenticatable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Auth\Passwords\CanResetPassword;
use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;
class User extends Model implements AuthenticatableContract, CanResetPasswordContract {
public function saves()
{
return $this->hasMany('pgc\Save');
}
public function savespgc()
{
return $this->hasMany('pgc\Save')->where('bya','=','0');
}
public function savesbya()
{
return $this->hasMany('pgc\Save')->where('bya','=','1')->orderby('name','ASC');
}
public function screenshots()
{
return $this->hasMany('pgc\Screenshot');
}
public function screenshotsbya()
{
return $this->hasMany('pgc\Screenshot')->where('bya','=','1')->where('hidden','=','0');
}
public function screenshotspgc()
{
return $this->hasMany('pgc\Screenshot')->where('bya','=','0')->where('hidden','=','0');
}
use Authenticatable, CanResetPassword;
/**
* The database table used by the model.
*
* @var string
*/
protected $table = 'users';
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = ['user_id' , 'duid' , 'name', 'email', 'password','dealer'];
/**
* The attributes excluded from the model's JSON form.
*
* @var array
*/
protected $hidden = ['password', 'remember_token','duid','updated_at','created_at'];
}
DevUser：
<?php namespace pgc;
use Illuminate\Auth\Authenticatable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Auth\Passwords\CanResetPassword;
use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;
class DevUser extends Model implements AuthenticatableContract, CanResetPasswordContract {
public function saves()
{
return $this->hasMany('pgc\DevSave');
}
public function savespgc()
{
return $this->hasMany('pgc\DevSave')->where('bya','=','0');
}
public function savesbya()
{
return $this->hasMany('pgc\DevSave')->where('bya','=','1')->orderby('name','ASC');
}
public function screenshots()
{
return $this->hasMany('pgc\DevScreenshot');
}
public function screenshotsbya()
{
return $this->hasMany('pgc\DevScreenshot')->where('bya','=','1')->where('hidden','=','0');
}
public function screenshotspgc()
{
return $this->hasMany('pgc\DevScreenshot')->where('bya','=','0')->where('hidden','=','0');
}
use Authenticatable, CanResetPassword;
/**
* The database table used by the model.
*
* @var string
*/
protected $table = 'users';
protected $connection = 'mysqldev';
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = ['user_id' , 'duid' , 'name', 'email', 'password','dealer'];
/**
* The attributes excluded from the model's JSON form.
*
* @var array
*/
protected $hidden = ['password', 'remember_token','duid','updated_at','created_at'];
}
保存：
<?php namespace pgc;
use Illuminate\Database\Eloquent\Model;
class Save extends Model {
public function user()
{
return $this->belongsTo('pgc\User');
}
/**
* The database table used by the model.
*
* @var string
*/
protected $table = 'saves';
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = ['user_id', 'name', 'savedata'];
}
DevSave：
<?php namespace pgc;
use Illuminate\Database\Eloquent\Model;
class DevSave extends Model {
public function user()
{
return $this->belongsTo('pgc\DevUser');
}
/**
* The database table used by the model.
*
* @var string
*/
protected $table = 'saves';
protected $connection = 'mysqldev';
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = ['user_id', 'name', 'savedata'];
}
这就是设置开发路由组前缀的方式：
Route::group(['prefix' => 'devs'], function ()
{
...
Route::post('getpreconfig', function()
{
$bya = false;
if (!is_null(Input::get('type')))
{
if (Input::get('type') == "bya")
$bya = true;
}
$user = pgc\DevUser::where('name', '=', "admin")->first();
if(is_null($user))
return ("error:user not found or logged in!");
if ($bya)
$allsaves = $user->savesbya;
else
$allsaves = $user->savespgc;
if (is_null($allsaves))
return ("empty");
//echo ($allsaves);
return $allsaves->toJson();
});
...
});
对于生产端，它是相同的post终结点函数，但使用的是User模型。 （就像我上面说的，它在生产方面可以正常工作。）
答案 0 :(得分：2)
您的模型名称是DevUser，但是您在数据库中使用user_id。如果您未明确指定用于关系的列，Laravel将尝试猜测它，这就是dev_user_id的来源。定义您的关系，如下所示：
在DevSave.php中：
public function user(){
return $this->belongsTo('pgc\DevUser', 'user_id');
}
或者考虑在关系名称中使用dev，例如public function devUser()等。
您的代码在生产环境中起作用的原因是您使用的是User，而不是DevUser，因此Laravel正确地猜测user_id是您要在关系中使用的列