Module: AttachmentSan::ModuleExt

Defined in:
lib/attachment_san/core_ext.rb

Instance Method Summary collapse

Instance Method Details

#modulized_mod_get(name) ⇒ Object

Retrieve a Module/Class bfor the given name. It differentiates from const_get in that it only searches in the mod it’s called on.

class A
  class B
  end
end

class C; end

# If the requested mod exists in the namespace, the result is the same:
A.const_get('B') # => A::B
A.modulized_mod_get('B') # => A::B

# Now notice that const_get finds the mod outside the `A' namespace:
A.const_get('C') # => C
A.modulized_mod_get('C') # => NameError



20
21
22
23
24
25
26
27
28
29
 
# File 'lib/attachment_san/core_ext.rb', line 20

def modulized_mod_get(name)
  const = const_get(name)
  modulized_name = "#{self.name}::#{name}"
  
  if const.is_a?(Module) && const.name == modulized_name
    const
  else
    raise NameError, "uninitialized mod constant #{modulized_name}"
  end
end