Module: PGB::Mutable

Included in:
Query
Defined in:
lib/pgb/mutable.rb

Instance Method Summary collapse

Instance Method Details

#mutable(method) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
# File 'lib/pgb/mutable.rb', line 5

def mutable(method)
  original_method = "original_#{method}"
  alias_method original_method, method

  define_method("#{method}!") do |*args, **opts, &block|
    public_send(original_method, *args, **opts, &block)
    self
  end

  define_method(method) do |*args, **opts, &block|
    copy = dup
    copy.instance_exec { public_send(original_method, *args, **opts, &block) }
    copy
  end
end