Module: ActiveScaffold::Configurable

Overview

Exposes a configure method that accepts a block and runs all contents of the block in two contexts, as opposed to the normal one. First, everything gets evaluated as part of the object including Configurable. Then, as a failover, missing methods and variables are evaluated in the original binding of the block.

Note that this only works with “barewords”. Constants, instance variables, and class variables are not currently supported in both contexts.

May add the given functionality at both the class and instance level. For the former, use extend, and for the latter, use include.

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object


18
19
20
21
22
23
24
# File 'lib/active_scaffold/configurable.rb', line 18

def method_missing(name, *args)
  if @configuration_binding&.respond_to?(name, true)
    @configuration_binding.send(name, *args)
  else
    super
  end
end

Instance Method Details

#configure(&configuration_block) ⇒ Object


10
11
12
13
14
15
16
# File 'lib/active_scaffold/configurable.rb', line 10

def configure(&configuration_block)
  return unless configuration_block
  @configuration_binding = configuration_block.binding.eval('self')
  ret = instance_exec(self, &configuration_block)
  @configuration_binding = nil
  ret
end

#respond_to_missing?(name, include_all = false) ⇒ Boolean

Returns:

  • (Boolean)

26
27
28
29
30
31
32
# File 'lib/active_scaffold/configurable.rb', line 26

def respond_to_missing?(name, include_all = false)
  if defined? @configuration_binding
    @configuration_binding&.respond_to?(name, include_all)
  else
    super
  end
end