rails-schema-validations

Summary

Add validations to your models automatically based on the schema constraints. Place this one line in your model:

validations_from_schema

Generated Validations

schema type	rails validation	extra constraints
non-null	validates_presence_of
string	validates_length_of	:maximum
integer	validates_numericality_of	:only_integer, :less_than
float	validates_numericality_of
boolean	validates_inclusion_of

for boolean non-null it uses validates_inclusion_of :in => [true,false]

Options

To exclude a column use the :except => ['excluded'] option.

Warning

• Tested on MySQL. Rails 2.3 and Rails 3
• Assumes signed integers for less_than constraint
• Assume it doesn't work on your database unless you modify the test suite to run against your db and all tests pass