class Migrant::SchemaProxy

Why does this class exist? Excellent question. Basically, Kernel gives a whole bunch of global methods, like system, puts, etc. This is bad because our DSL relies on being able to translate any arbitrary method into a method_missing call. So, we call method missing in this happy bubble where these magic methods don't exist. The reason we don't inherit Schema itself in this way, is that we'd lose direct access to all other classes derived from Object. Normally this would just mean scope resolution operators all over the class, but the real killer is that the DSL would need to reference classes in that manner as well, which would reduce sexy factor by at least 100.

Public Class Methods

new(binding) click to toggle source
# File lib/migrant/schema.rb, line 121
def initialize(binding)
  @binding = binding
end

Public Instance Methods

method_missing(*args, &block) click to toggle source
# File lib/migrant/schema.rb, line 134
def method_missing(*args, &block)
  field = args.slice!(0)
  data_type = args.slice!(0) unless args.first.nil? || args.first.respond_to?(:keys)

  @binding.add_field(field.to_sym, data_type, args.extract_options!)
end
property(*arguments) click to toggle source

Provides a method for dynamically creating fields (i.e. not part of instance_eval)

# File lib/migrant/schema.rb, line 130
def property(*arguments)
  method_missing(*arguments)
end
translate_fancy_dsl(&block) click to toggle source
# File lib/migrant/schema.rb, line 125
def translate_fancy_dsl(&block)
  self.instance_eval(&block)
end