Added option for custom versions path

Author: joegreen88

README.md

@@ -55,8 +55,9 @@ respectively. Each configuration requires a `host`, `user`, `password` and `data
     buildtime.database = "buzz"
 
 ## Versioning
-Your database versions will be stored in `<project_root>/db/versions`. The sql for each version is stored in a directory
-directly under this directory. So the directories are named `db/versions/1`, `db/versions/2` and so on.
+Your database versions will be stored in `<project_root>/db/versions` by default.
+The sql for each version is stored in a directory directly under this directory.
+So the directories are named `db/versions/1`, `db/versions/2` and so on.
 Each version must contain at least one of the following files:
 
  - `schema.sql` - always runs first, contains `CREATE TABLE IF NOT EXISTS` and `ALTER` statements.
@@ -80,6 +81,9 @@ current database version.
 You can use the flag `--no-schema` to skip the schema files. This can be useful if you use an ORM to build the database
 schema.
 
+You can also use the option `--versions-path`, or `-p` for short, to provide a custom versions path.
+This allows you to override the default versions path which is `<project_root>/db/versions`.
+
 ### teardown
 Run `vendor/bin/teardown <environment>` to tear down the tables on the given environment.
 

src/Smrtr/MysqlVersionControl/UpCommand.php

@@ -40,6 +40,12 @@ protected function configure()
                 InputOption::VALUE_NONE,
                 'Skip execution of the schema files'
             )
+            ->addOption(
+                'versions-path',
+                'p',
+                InputOption::VALUE_REQUIRED,
+                'Optional custom path to database versions directory'
+            )
         ;
     }
 
@@ -98,6 +104,21 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         // 2. Check for current version and available version
 
+        // what is the versions path?
+        if ($input->getOption('versions-path')) {
+            $versionsPath = $input->getOption('versions-path');
+        } else {
+            $versionsPath = realpath(dirname(__FILE__).'/../../../../../../db/versions');
+        }
+        if (!is_readable($versionsPath)) {
+            $output->writeln('<error>Versions path is not readable: '.$versionsPath.'</error>');
+            return 1;
+        }
+        if (!is_dir($versionsPath)) {
+            $output->writeln('<error>Versions path is not a directory: '.$versionsPath.'</error>');
+            return 1;
+        }
+
         // what is the current version?
         $query = $runConf->query("SELECT `value` FROM `db_config` WHERE `key`='version'");
         if ($query->rowCount()) {
@@ -106,15 +127,16 @@ protected function execute(InputInterface $input, OutputInterface $output)
         } else {
             $currentVersion = 0;
         }
+        $output->writeln('Current version: '.$currentVersion);
 
         // what is the available version?
         $availableVersion = 0;
-        $versionsPath = realpath(dirname(__FILE__).'/../../../../../../db/versions');
         foreach (scandir($versionsPath) as $path) {
             if (preg_match("/^(\\d)+$/", $path) && (int) $path > $availableVersion) {
                 $availableVersion = (int) $path;
             }
         }
+        $output->writeln('Available version: '.$availableVersion);
 
         if ($currentVersion >= $availableVersion) {
             $output->writeln('<info>Database version is already up to date.</info>');