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Merge pull request #129 from silverstripe-rebelalliance/hackathon

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BUG: Fixes #119 adds a tasks to clean up columns for EditableFormField
This commit is contained in:
Will Rossiter 2013-06-04 02:51:11 -07:00
commit d20ab0dd89
1 changed files with 61 additions and 0 deletions
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code/tasks/UserFormsColumnCleanTask.php Normal file
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<?php
/**
* UserForms Column Clean Task
*
* Column clean up tasks for Userforms
*
* @package userforms
*/
class UserFormsColumnCleanTask extends MigrationTask {
protected $title = "UserForms EditableFormField Column Clean task";
protected $description = "Removes unused columns from EditableFormField for MySQL databases;";
protected $tables = array('EditableFormField');
protected $keepColumns = array('ID');
/**
* Publish the existing forms.
*
*/
public function run($request) {
foreach ($this->tables as $db) {
$obj = new $db();
$columns = $obj->database_fields($db);
$query = "SHOW COLUMNS FROM $db";
$liveColumns = DB::query($query)->column();
$backedUp = 0;
$query = "SHOW TABLES LIKE 'Backup_$db'";
$tableExists = DB::query($query)->value();
if ($tableExists != null) {
echo "Tasks run already on $db exiting";
return;
}
$backedUp = 0;
foreach ($liveColumns as $index => $column) {
if ($backedUp == 0) {
echo "Backing up $db <br />";
echo "Creating Backup_$db <br />";
// backup table
$query = "CREATE TABLE Backup_$db LIKE $db";
DB::query($query);
echo "Populating Backup_$db <br />";
$query = "INSERT Backup_$db SELECT * FROM $db";
DB::query($query);
$backedUp = 1;
}
if (!isset($columns[$column]) && !in_array($column, $this->keepColumns)) {
echo "Dropping $column from $db <br />";
$query = "ALTER TABLE $db DROP COLUMN $column";
DB::query($query);
}
}
}
}
}