Archive > Tag > criteria
This is a super short snippet that I ALWAYS forget how to do! Often I want to build more complex where clauses with Propel Criteria which use SQL functions such as UCASE, LCASE, LEN and the date functions DAY, MONTH and YEAR. This is possible using Propel & Criteria, but how to do it is not immediately obvious.
The snippet below shows how to select objects from the database which were created in a specific month and year. Using Criteria::CUSTOM, it’s possible to specify a column and a comparison to do with that column. This is quite useful for doing things like building archive lists.
1 2 | $c->add(MyObjPeer::CREATED_AT, 'MONTH('.MyObjPeer::CREATED_AT.')='. $month, Criteria::CUSTOM); $c->addAnd(MyObjPeer::CREATED_AT, 'YEAR('.MyObjPeer::CREATED_AT.')='. $year, Criteria::CUSTOM); |
When working with large and complex datasets in Symfony, there comes a point where the ORM layer (Propel or Doctrine) causes more problems than it solves. Sometimes it’s necessary to debug large SQL queries built using the ORM layer, and at other times it’s appropriate to bypass the ORM layer entirely. The following snippets come from projects using Propel, I realise a lot of folks will have moved on to Doctrine but I hope there may be one or two useful things for that here too.
