Class: ConditionValidationRule

Inherits:
ValidationRule show all
Defined in:
lib/validation_profiler/rules/rules.rb

Instance Method Summary collapse

Methods inherited from ValidationRule

#get_field_value, #is_required?

Instance Method Details

#confirm_expression?(value_a, expression, value_b) ⇒ Boolean 



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# File 'lib/validation_profiler/rules/rules.rb', line 430

def confirm_expression?(value_a, expression, value_b)
  a = value_a
  b = value_b

  if value_a.is_a?(String)
    a = "'#{value_a}'"
  elsif value_a == nil
    a = 'nil'
  end

  if value_b.is_a?(String)
    b = "'#{value_b}'"
  elsif value_b == nil
    b = 'nil'
  end

  eval("#{a} #{expression} #{b}")
end

#error_message(field, attributes = {}) ⇒ Object 



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# File 'lib/validation_profiler/rules/rules.rb', line 366

def error_message(field, attributes = {})

  match_field = attributes[:field]

  #check if a custom error message has been specified in the attributes
  if attributes[:message] == nil
    #no custom error message has been specified so create the default message.
    "#{field} is not valid"
  else
    attributes[:message]
  end
end

#validate(obj, field, attributes) ⇒ Object 



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# File 'lib/validation_profiler/rules/rules.rb', line 380

def validate(obj, field, attributes)

  #attempt to get the field value from the object
  value = get_field_value(obj, field)

  condition_field = attributes[:condition_field]
  if condition_field == nil
    raise InvalidRuleAttributes.new(ConditionValidationRule, field)
  end

  condition_value = attributes[:condition_value]
  if condition_value == nil
    raise InvalidRuleAttributes.new(ConditionValidationRule, field)
  end

  condition_expression = attributes[:condition_expression]
  if condition_expression == nil
    raise InvalidRuleAttributes.new(ConditionValidationRule, field)
  end

  field_expression = attributes[:field_expression]
  if field_expression == nil
    raise InvalidRuleAttributes.new(ConditionValidationRule, field)
  end

  field_value = attributes[:field_value]
  if field_value == nil
    raise InvalidRuleAttributes.new(ConditionValidationRule, field)
  end

  if !is_required?(value, attributes)
    return true
  end

  condition_field_value = get_field_value(obj, condition_field)

  #check if the condition is valid
  if confirm_expression?(condition_field_value, condition_expression, condition_value)
    #check if the field value is correct for the condition
    if confirm_expression?(value, field_expression, field_value)
      return true
    else
      return false
    end
  end

  return true

end