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<?php namespace Illuminate\Database\Migrations;
use Closure;
use Illuminate\Filesystem\Filesystem;
class MigrationCreator {
/**
* The filesystem instance.
*
* @var \Illuminate\Filesystem\Filesystem
*/
protected $files;
/**
* The registered post create hooks.
*
* @var array
*/
protected $postCreate = array();
/**
* Create a new migration creator instance.
*
* @param \Illuminate\Filesystem\Filesystem $files
* @return void
*/
public function __construct(Filesystem $files)
{
$this->files = $files;
}
/**
* Create a new migration at the given path.
*
* @param string $name
* @param string $path
* @param string $table
* @param bool $create
* @return string
*/
public function create($name, $path, $table = null, $create = false)
{
$path = $this->getPath($name, $path);
// First we will get the stub file for the migration, which serves as a type
// of template for the migration. Once we have those we will populate the
// various place-holders, save the file, and run the post create event.
$stub = $this->getStub($table, $create);
$this->files->put($path, $this->populateStub($name, $stub, $table));
$this->firePostCreateHooks();
return $path;
}
/**
* Get the migration stub file.
*
* @param string $table
* @return string
*/
protected function getStub($table, $create)
{
if (is_null($table))
{
return $this->files->get($this->getStubPath().'/blank.stub');
}
// We also have stubs for creating new tables and modifying existing tables
// to save the developer some typing when they are creating a new tables
// or modifying existing tables. We'll grab the appropriate stub here.
else
{
$stub = $create ? 'create.stub' : 'update.stub';
return $this->files->get($this->getStubPath()."/{$stub}");
}
}
/**
* Populate the place-holders in the migration stub.
*
* @param string $name
* @param string $stub
* @param string $table
* @return string
*/
protected function populateStub($name, $stub, $table)
{
$stub = str_replace('{{class}}', studly_case($name), $stub);
// Here we will replace the table place-holders with the table specified by
// the developer, which is useful for quickly creating a tables creation
// or update migration from the console instead of typing it manually.
if ( ! is_null($table))
{
$stub = str_replace('{{table}}', $table, $stub);
}
return $stub;
}
/**
* Fire the registered post create hooks.
*
* @return void
*/
protected function firePostCreateHooks()
{
foreach ($this->postCreate as $callback)
{
call_user_func($callback);
}
}
/**
* Register a post migration create hook.
*
* @param Closure $callback
* @return void
*/
public function afterCreate(Closure $callback)
{
$this->postCreate[] = $callback;
}
/**
* Get the full path name to the migration.
*
* @param string $name
* @param string $path
* @return string
*/
protected function getPath($name, $path)
{
return $path.'/'.$this->getDatePrefix().'_'.$name.'.php';
}
/**
* Get the date prefix for the migration.
*
* @return string
*/
protected function getDatePrefix()
{
return date('Y_m_d_His');
}
/**
* Get the path to the stubs.
*
* @return string
*/
public function getStubPath()
{
return __DIR__.'/stubs';
}
/**
* Get the filesystem instance.
*
* @return \Illuminate\Filesystem\Filesystem
*/
public function getFilesystem()
{
return $this->files;
}
}
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