moved include file logic to separate method

docs/guide/db-migrations.md

@@ -835,9 +835,10 @@ The migration command comes with a few command-line options that can be used to
   When this is `true`, the user will be prompted before the command performs certain actions.
   You may want to set this to `false` if the command is being used in a background process.
 
-* `migrationPath`: string (defaults to `@app/migrations`), specifies the directory storing all migration
+* `migrationPath`: string|array (defaults to `@app/migrations`), specifies the directory storing all migration
   class files. This can be specified as either a directory path or a path [alias](concept-aliases.md).
-  Note that the directory must exist, or the command may trigger an error.
+  Note that the directory must exist, or the command may trigger an error. Since version 2.0.12 an array can be
+  specified for loading migrations from multiple sources.
 
 * `migrationTable`: string (defaults to `migration`), specifies the name of the database table for storing
   migration history information. The table will be automatically created by the command if it does not exist.

framework/console/controllers/BaseMigrateController.php

@@ -717,6 +717,21 @@ abstract class BaseMigrateController extends Controller
      */
     protected function createMigration($class)
     {
+        $this->includeMigrationFile($class);
+        return new $class();
+    }
+
+    /**
+     * Includes the migration file for a given migration class name.
+     *
+     * This function will do nothing on namespaced migrations, which are loaded by
+     * autoloading automatically. It will include the migration file, by searching
+     * [[migrationPath]] for classes without namespace.
+     * @param string $class the migration class name.
+     * @since 2.0.12
+     */
+    protected function includeMigrationFile($class)
+    {
         $class = trim($class, '\\');
         if (strpos($class, '\\') === false) {
             if (is_array($this->migrationPath)) {
@@ -732,8 +747,6 @@ abstract class BaseMigrateController extends Controller
                 require_once($file);
             }
         }
-
-        return new $class();
     }
 
     /**

framework/console/controllers/MigrateController.php

@@ -182,23 +182,7 @@ class MigrateController extends BaseMigrateController
      */
     protected function createMigration($class)
     {
-        $class = trim($class, '\\');
-        if (strpos($class, '\\') === false) {
-            if (is_array($this->migrationPath)) {
-                foreach($this->migrationPath as $path) {
-                    $file = $path . DIRECTORY_SEPARATOR . $class . '.php';
-                    if (is_file($file)) {
-                        require_once($file);
-                        break;
-                    }
-                }
-            } else {
-                $file = $this->migrationPath . DIRECTORY_SEPARATOR . $class . '.php';
-                require_once($file);
-            }
-        }
-
-
+        $this->includeMigrationFile($class);
         return new $class(['db' => $this->db]);
     }