Symfony - Tech-Recipes

Symfony tutorials

Symfony 1.4: Add and Update Created_at and Updated_at Fields Automatically

contributed by David Kirk on February 1, 2011 under Symfony

After the CRUD building process with symfony, beginners are often perplexed with the handling of the created_at and updated_at fields on their forms. These fields are typically best handled behind the scenes. Here is how to let symfony take control of these fields automatically.

Symfony 1.4: Widget Does Not Exist Error after Unset

contributed by David Kirk on under Symfony

With symfony’s form builder, users will need to unset several common fields such as created_at and updated_at. Beginners frequently experience a “widget does not exist” error after unsetting form fields.

Symfony: Detect Which Version is Installed

contributed by David Kirk on March 5, 2010 under Symfony

The Symfony php framework is frequently updated. Detecting which version is actively installed, however, is not well documented. Here is how to do it.

Symfony: Drop Down List Box Without Submit Button

contributed by David Kirk on November 25, 2009 under Symfony

I needed a drop down list box for a symfony site I was designing. As a newbie symfony programmer, I wanted to record this so I could reference it later. Although this uses a little javascript, it will correctly function and is backwards compatible to users without javascript enabled.

Symfony / Propel: How to Left Join

contributed by David Kirk on July 4, 2008 under Symfony

A JOIN is a way to connect related database tables by the common values between them. A left join contains all of the rows from the primary table plus related members of the second database if they exist. Using joins can significantly reduce the number of database queries required to render a web page. This Tech-Recipe describes how to do a left join in Symfony using Propel.

Symfony: Rebuild from Schema.yml Without Loss of Data

contributed by David Kirk on June 27, 2008 under Symfony

As my test database became more complex, I hated entering data again after doing a propel-build-all. Following these commands, you can save your database content after rebuilding your database from your schema file.

Symfony: Delete an Application

contributed by qmchenry on April 6, 2008 under Symfony

The command line provisioning utility in symfony provides mechanisms to create an application, but doesn’t have the means to delete one. If you’ve unintentionally created an application or no longer need an app and want to do housecleaning, this Tech-Recipe describes how to get it gone.

Symfony: Fix propel-insert-sql error: Can’t connect to local MySQL server

contributed by qmchenry on April 4, 2008 under Symfony

After building your model and the SQL code to represent it, symfony offers a mechanism to insert the SQL code directly into your configured database. If you are running MySQL locally, this should work for you with no additional configuration. If you are running MySQL on another server, as is common in shared web hosting and other environments, you’ll get an error. In the past, I’ve just grunted and sent the SQL code to the database manually, but there is an easy fix to make things work as they should.