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Hi, Something has been bothering me about model validation: how do I know that the database has not changed in between when I validate my model''s data, and when it actually gets saved to the database? As a simple example, say I have a User model like: class User validates_uniqueness_of :username end When this gets saved to the database, the validation code checks that there is

I came across this notice of an upcoming webinar. The issues identified in the first paragraph below seem to me exactly those that the R project is designed to address. The claim that "most research software is barely fit for purpose compared to equivalent systems in the commercial world" seems to me not quite accurate! Comments! WEBINAR SERIES A Crack in the Code: Why software

Hi, I have been using a bit of ruby here and there for scripting jobs for a year or so, and more recently have started dabbling in rails. I was wondering if anyone can help me with a strange behaviour I am getting when trying to run a migration. If I delimit a block for the create_table method with braces, the migration crashes, whereas the exact same code with the braces replaced by