Class: SettingAccessors::Converter

Inherits:
Object
  • Object
show all
Defined in:
lib/setting_accessors/converter.rb

Overview

This class hopefully will hopefully one day mimic ActiveRecord’s attribute assigning methods, meaning that a conversion to the column type is done as soon as a new value is assigned by the programmer.

If the value cannot be parsed in the required type, nil is assigned. Please make sure that you specify the correct validations in settings.yml or assigned model to avoid this.

Currently supported types:

- Fixnum
- String
- Boolean

If the type is ‘polymorphic’, it is not converted at all.

Instance Method Summary collapse

Constructor Details

#initialize(value_type) ⇒ Converter

Returns a new instance of Converter.



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# File 'lib/setting_accessors/converter.rb', line 19

def initialize(value_type)
  @value_type = value_type
end

Instance Method Details

#convert(new_value) ⇒ Object

Converts the setting’s value to the correct type



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# File 'lib/setting_accessors/converter.rb', line 26

def convert(new_value)
  #If the value is set to be polymorphic, we don't have to convert anything.
  return new_value if @value_type == 'polymorphic'

  #ActiveRecord only converts non-nil values to their database type
  #during assignment
  return new_value if new_value.nil?

  parse_method = :"parse_#{@value_type}"

  if private_methods.include?(parse_method)
    send(parse_method, new_value)
  else
    Rails.logger.warn("Invalid Setting type: #{@value_type}")
    new_value
  end
end