Module: CanCanExplainer::RuleExtensions

Defined in:
lib/cancan_explainer/cancan_extensions.rb

Instance Method Summary collapse

Instance Method Details

#determine_source_location_from(caller) ⇒ Object

The source location of the rule is found in the stack trace entry immediately prior to ‘Ability#can` (or `cannot`).



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# File 'lib/cancan_explainer/cancan_extensions.rb', line 12

def determine_source_location_from(caller)
  index = caller.index { |line|
    line =~ %r{lib/cancan/ability\.rb:\d+:in `(can|cannot)'}
  }
  index.nil? ? nil : caller[index + 1]
end

#initialize(*args) ⇒ Object 



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# File 'lib/cancan_explainer/cancan_extensions.rb', line 5

def initialize(*args)
  @source_location = determine_source_location_from(caller)
  super
end

#matches_conditions?(action, subject, extra_args) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cancan_explainer/cancan_extensions.rb', line 19

def matches_conditions?(action, subject, extra_args)
  result = super
  CanCanExplainer.
    explanation&.
    add_condition_match(@source_location, action, subject, extra_args)
  result
end