Class: Qe::Condition

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/qe/condition.rb

Instance Method Summary collapse

Instance Method Details

#evaluate? ⇒ Boolean

evaluate triggering element against expression and return match|nil

Returns:

  • (Boolean) 


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# File 'app/models/qe/condition.rb', line 16

def evaluate?
  true
  # answers = self.trigger.response # answers loaded?
  # expression = self.expression.downcase
  # answers.find {|answer| answer = answer.downcase; eval(expression)}
end

#trigger_js ⇒ Object

javascript to toggle pages/elements based on the “response”



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# File 'app/models/qe/condition.rb', line 24

def trigger_js     
  # will find the first answer (if multiple/checkboxes) where the expression evaluates to true (downcase both to be case insensitive)
  # if no match, disabled will be true, otherwise false
  js = "  disabled = (response.find(function(answer) {\n    answer = toLowerCase(answer);\n    return eval(\"\#{escape_javascript(self.expression.downcase)}\");\n  }) == undefined);\n  JS\n  \n  if toggle_id.nil?\n    # toggling a whole page (link), which will affect final page validation\n  else\n    # toggling an element (form element)... if page is loaded/cached (if not, the server-side will take care of it on load)\n    js = js + <<-JS\n    if(page_handler.isPageLoaded('page_\#{self.toggle_page_id}'))\n    {\n      $('element_\#{self.toggle_id}').disabled = disabled;\n    }\n    JS\n  end\n  \n  js\nend\n"