Is RedBean ORM able to create unique keys?

问题:

I'd like RedBean to create unique keys/indexes when generating the schema. The following code does- opposed to how I understand the documentation- not do this:

R::setup('sqlite:rss_loader.db3');

$bean = R::findOne(IMG);
if (!$bean->id) {
    $bean = R::dispense(IMG);
    $bean->setMeta("buildcommand.unique.0", array('url'));
    $bean->url      = 'text';
    R::store($bean);
    $bean->wipe();

    R::freeze(); //no more schema changes!
}

What is happening in sqlite ist this:

create table img (id integer primary key autoincrement, url) 

What I was expecting was this:

create table img (id integer primary key autoincrement, url text unique) 

Can this be achieved without write SQL against RedBean?

回答1:

What version of Redbean are you using? It looks like they updated the buildcommand in the latest version. This is what the manual says:

$bean->setMeta("buildcommand.unique" , array(array($property1, $property2)));

Plugging in what you have:

$bean->setMeta("buildcommand.unique" , array(array('url')));

If that doesn't work, you may have to read the actual code under the setMeta function and see what is actually going on.

To do this on an existing table it is sufficient to "store" an empty bean like this- no data needs to be added to the DB:

$bean = R::dispense(IMG);
$bean->setMeta("buildcommand.unique", array(array(...)));
R::store($bean);

(Word of warning, if you freeze after doing this, you're not guaranteed to have all your columns)