Viewing file:  MigrationCreator.php (5.93 KB) -rw-r--r--
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<?php
namespace Illuminate\Database\Migrations;
use Closure;
use Illuminate\Filesystem\Filesystem;
use Illuminate\Support\Str;
use InvalidArgumentException;
class MigrationCreator
{
/**
* The filesystem instance.
*
* @var \Illuminate\Filesystem\Filesystem
*/
protected $files;
/**
* The custom app stubs directory.
*
* @var string
*/
protected $customStubPath;
/**
* The registered post create hooks.
*
* @var array
*/
protected $postCreate = [];
/**
* Create a new migration creator instance.
*
* @param \Illuminate\Filesystem\Filesystem $files
* @param string $customStubPath
* @return void
*/
public function __construct(Filesystem $files, $customStubPath)
{
$this->files = $files;
$this->customStubPath = $customStubPath;
}
/**
* Create a new migration at the given path.
*
* @param string $name
* @param string $path
* @param string|null $table
* @param bool $create
* @return string
*
* @throws \Exception
*/
public function create($name, $path, $table = null, $create = false)
{
$this->ensureMigrationDoesntAlreadyExist($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);
$path = $this->getPath($name, $path);
$this->files->ensureDirectoryExists(dirname($path));
$this->files->put(
$path, $this->populateStub($stub, $table)
);
// Next, we will fire any hooks that are supposed to fire after a migration is
// created. Once that is done we'll be ready to return the full path to the
// migration file so it can be used however it's needed by the developer.
$this->firePostCreateHooks($table, $path);
return $path;
}
/**
* Ensure that a migration with the given name doesn't already exist.
*
* @param string $name
* @param string $migrationPath
* @return void
*
* @throws \InvalidArgumentException
*/
protected function ensureMigrationDoesntAlreadyExist($name, $migrationPath = null)
{
if (! empty($migrationPath)) {
$migrationFiles = $this->files->glob($migrationPath.'/*.php');
foreach ($migrationFiles as $migrationFile) {
$this->files->requireOnce($migrationFile);
}
}
if (class_exists($className = $this->getClassName($name))) {
throw new InvalidArgumentException("A {$className} class already exists.");
}
}
/**
* Get the migration stub file.
*
* @param string|null $table
* @param bool $create
* @return string
*/
protected function getStub($table, $create)
{
if (is_null($table)) {
$stub = $this->files->exists($customPath = $this->customStubPath.'/migration.stub')
? $customPath
: $this->stubPath().'/migration.stub';
} elseif ($create) {
$stub = $this->files->exists($customPath = $this->customStubPath.'/migration.create.stub')
? $customPath
: $this->stubPath().'/migration.create.stub';
} else {
$stub = $this->files->exists($customPath = $this->customStubPath.'/migration.update.stub')
? $customPath
: $this->stubPath().'/migration.update.stub';
}
return $this->files->get($stub);
}
/**
* Populate the place-holders in the migration stub.
*
* @param string $stub
* @param string|null $table
* @return string
*/
protected function populateStub($stub, $table)
{
// Here we will replace the table place-holders with the table specified by
// the developer, which is useful for quickly creating a tables creation
// or update migration from the console instead of typing it manually.
if (! is_null($table)) {
$stub = str_replace(
['DummyTable', '{{ table }}', '{{table}}'],
$table, $stub
);
}
return $stub;
}
/**
* Get the class name of a migration name.
*
* @param string $name
* @return string
*/
protected function getClassName($name)
{
return Str::studly($name);
}
/**
* Get the full path to the migration.
*
* @param string $name
* @param string $path
* @return string
*/
protected function getPath($name, $path)
{
return $path.'/'.$this->getDatePrefix().'_'.$name.'.php';
}
/**
* Fire the registered post create hooks.
*
* @param string|null $table
* @param string $path
* @return void
*/
protected function firePostCreateHooks($table, $path)
{
foreach ($this->postCreate as $callback) {
$callback($table, $path);
}
}
/**
* Register a post migration create hook.
*
* @param \Closure $callback
* @return void
*/
public function afterCreate(Closure $callback)
{
$this->postCreate[] = $callback;
}
/**
* 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 stubPath()
{
return __DIR__.'/stubs';
}
/**
* Get the filesystem instance.
*
* @return \Illuminate\Filesystem\Filesystem
*/
public function getFilesystem()
{
return $this->files;
}
}
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