Module: Sequel::Model::Validations

Defined in:

lib/sequel/model/validations.rb

Overview

Basic Sequel Validations

Sequel validations are based on the Validatable gem validatable.rubyforge.org/

To assign default validations to a sequel model:

class MyModel < SequelModel(:items)

validates do
  format_of...
  presence_of...
  acceptance_of...
  confirmation_of...
  length_of...
  true_for...
  numericality_of...
  format_of...
  validates_base...
  validates_each...
end

end

You may also perform the usual ‘longhand’ way to assign default model validates directly within the model class itself:

class MyModel < SequelModel(:items)
  validates_format_of...
  validates_presence_of...
  validates_acceptance_of...
  validates_confirmation_of...
  validates_length_of...
  validates_true_for...
  validates_numericality_of...
  validates_format_of...
  validates_base...
  validates_each...
end

Each validation allows for arguments:

TODO: fill the argument options in here

Advanced Sequel Validations

TODO: verify that advanced validates work as stated (aka write specs) NOTE: experimental

To store validates for conditional usage simply specify a name with which to store them
  class User < Sequel::Model

    # This set of validates becomes stored as :default and gets injected into the model.
    validates do
      # standard validates calls
    end

    validates(:registration) do
      # user registration specific validates 
    end

    validates(:promotion) do
      # user promotion validates
    end

  end

To use the above validates:

@user.valid?                # Runs the default validations only.
@user.valid?(:registration) # Runs both default and registration validations
@user.valid?(:promotion)    # Runs both default and promotion validations

You may determine whether the model has validates via:

has_validations? # will return true / false based on existence of validations on the model.

You may also retrieve the validations block if needed:

validates(:registration) # returns the registration validation block.

validates() method parameters:

a validations block - runs the validations block on the model & stores as :default
a name and a validations block - stores the block under the name
a name - returns a stored block of that name or nil
nothing - returns true / false based on if validations exist for the model.

Defined Under Namespace

Classes: Generator