module Sequel

Extension based upon Sequel::Migration and Sequel::Migrator

Adds the Sequel::Seed module and the Sequel::Seed::Base and Sequel::Seeder classes, which allow the user to easily group entity changes and seed/fixture the database to a newer version only (unlike migrations, seeds are not directional).

To load the extension:

Sequel.extension :seed

It is also important to set the environment:

Sequel::Seed.setup(:development)

Public Class Methods

seed(*env_labels, &block) click to toggle source

Creates a Seed subclass according to the given block.

The env_labels lists on which environments the seed should be applicable. If the current environment is not applicable, the seed is ignored. On the other hand, if it is applicable, it will be listed in Seed.descendants and subject to application (if it was not applied yet).

Expected seed call:

Sequel.seed(:test) do # seed is only applicable to the test environment
  def run
    Entity.create attribute: value
  end
end

Wildcard seed:

Sequel.seed do # seed is applicable to every environment, or no environment
  def run
    Entity.create attribute: value
  end
end

# File lib/sequel/extensions/seed.rb, line 49
def seed(*env_labels, &block)
  return if env_labels.length > 0 && !env_labels.map(&:to_sym).include?(Seed.environment)

  seed = Class.new(Seed::Base)
  seed.class_eval(&block) if block_given?
  Seed::Base.inherited(seed) unless Seed::Base.descendants.include?(seed)
  seed
end