Valle

Valle adds validators to all the fields of your ActiveRecord models, so you should not think that string length or ID value exceeds the permissible limits.

For example, maximum length of the string in PostgreSQL is 255. We will setup the following validator for you, so you don't need to write it by hands.

validates :field_name, length: { maximum: 255 }

Note: If you do not do this (and usually you are) and try to enter 2147483648 into the field with type: interger (see Numeric types section of PostgreSQL docs), you will get 500 error.

Example:

PG::Error: ERROR:  value "2147483648" is out of range for type integer
: SELECT  "users".* FROM "users"  WHERE "users"."id" = $1 LIMIT 1

There is a simular gem, called validates_lengths_from_database. It solves only one part - applicable to strings. This gem is designed to work with all possible field types.

Installation

Add this line to your application's Gemfile:

gem 'valle'

And then execute:

$ bundle

Or install it yourself as:

$ gem install valle

Usage

By default, this gem adds validators to all your ActiveRecord models. This means that, basically, you don't need to tweak it.

However, you could tell him directly what models it should take into account by adding config/initializers/valle.rb:

Valle.configure do |config|
  config.models = %w(User, Post)
end

Also, you should be able to turn it off temporary by setting enabled option to false.

Valle.configure do |config|
  config.enabled = false
end

Contributing

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Added some feature')
Run test suite (rake test_suite)
Push to the branch (git push origin my-new-feature)
Create new Pull Request

Core team

License