If you are getting an error about ‘undefined method assert_valid_keys’ in Rails : undefined method `assert_valid_keys' for :time_entry_product:Symbol … it may be because you have two relationships specified on the same line in your model : ...
After upgrading a few gems recently, I found that the content returned from the nginx memcached_pass directive always had a few strange characters prepended. After some investigation it seems that this is caused by rails ‘marshalling’ the data. If you’re using a memcached set command such as Cache.set(key, content, time_to_live) You need to add an extra argument to force rails to cache the raw data instead of marshalling it : ...
I’ve been wondering for a while why Phusion Passenger seems to completely ignore the PassengerMaxPoolSize, PassengerMaxInstancesPerApp and PassengerPoolIdleTime directives. I recently discovered that they don’t work inside VirtualHost blocks in apache config. The old (non-working) config was something like : ...
If you are getting a LookupError in Pylons similar to the following : ...
I’ve often found that after SSHing with iTerm, the delete key mappings are occasionally (well regularly) problematic. This post from Alaska Geeks sorted the problem out straight away in my case : ...
Unfortunately there is no .delay() function in jQuery. You can fake this, however, by using the .fadeTo() function: $("#my_element").fadeIn(1000).fadeTo(5000, 1).fadeOut(1000); ...
If you’re getting a ‘svn: Can’t find a temporary directory: Internal error’ error while using subversion, check the disk space on the server : $ df You’re more than likely out of space. [dave@dev2:~/]$ df Filesystem 1K-blocks Used Available Use% Mounted on /dev/vg0-rootvol 73608360 73605908 0 100% /
I recently had trouble importing the com.sun.media.jai imaging library into appfuse : The import com.sun.media.jai cannot be resolved To add a dependency in your pom.xml, first add the new repository (may not be strictly necessary if the library is already in the default appfuse repositories) : ...
If you want to assign a complex class (such as a HashMap / ArrayList etc) as a constant in Java, use the static initializer block construct : ...
To set the default value of a field with Hibernate, you can use the columnDefinition argument : ...
