Class: HoboFields::EnumString

Inherits:
String
  • Object
show all
Defined in:
lib/hobo_fields/enum_string.rb

Defined Under Namespace

Modules: DeclarationHelper

Constant Summary collapse

COLUMN_TYPE = 
:string

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(value) ⇒ EnumString

Returns a new instance of EnumString.



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# File 'lib/hobo_fields/enum_string.rb', line 84

def initialize(value)
  super(self.class.detranslated_values.nil? ? value: (self.class.detranslated_values[value.to_s] || value))
end

Class Attribute Details

.detranslated_values ⇒ Object

Returns the value of attribute detranslated_values.



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# File 'lib/hobo_fields/enum_string.rb', line 47

def detranslated_values
  @detranslated_values
end

.translated_values ⇒ Object

Returns the value of attribute translated_values.



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# File 'lib/hobo_fields/enum_string.rb', line 45

def translated_values
  @translated_values
end

.values ⇒ Object

Returns the value of attribute values.



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# File 'lib/hobo_fields/enum_string.rb', line 43

def values
  @values
end

Class Method Details

.for(*values) ⇒ Object 



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# File 'lib/hobo_fields/enum_string.rb', line 49

def for(*values)
  options = values.extract_options!
  values = values.*.to_s
  c = Class.new(EnumString) do
    values.each do |v|
      const_name = v.upcase.gsub(/[^a-z0-9_]/i, '_').gsub(/_+/, '_')
      const_name = "V" + const_name if const_name =~ /^[0-9_]/ || const_name.blank?
      const_set(const_name, self.new(v)) unless const_defined?(const_name)

      method_name = "is_#{v.underscore}?"
      define_method(method_name) { self == v } unless self.respond_to?(method_name)
    end
  end
  c.with_values(*values)
  c.set_name(options[:name]) if options[:name]
  c
end

.inspect ⇒ Object Also known as: to_s 



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# File 'lib/hobo_fields/enum_string.rb', line 67

def inspect
  name.blank? ? "#<EnumString #{(values || []) * ' '}>" : name
end

.name ⇒ Object 



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# File 'lib/hobo_fields/enum_string.rb', line 76

def name
  @name || super
end

.set_name(name) ⇒ Object 



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# File 'lib/hobo_fields/enum_string.rb', line 72

def set_name(name)
  @name = name
end

.with_values(*values) ⇒ Object 



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# File 'lib/hobo_fields/enum_string.rb', line 20

def with_values(*values)
  @values = values.*.to_s
  @translated_values = Hash.new do |hash, value|
    if name.blank? || value.blank?
      hash[value] = value
    else
      hash[value] = I18n.t("#{name.tableize}.#{value}", :default => value)
      @detranslated_values[hash[value]] = value
      hash[value]
    end
  end
      
  @detranslated_values = Hash.new do |hash, value|
    if name.blank?
      hash[value] = value
    else
      hash[value] = @values.detect(proc { value } ) {|v|
        @translated_values[v]==value
      }
    end
  end
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/hobo_fields/enum_string.rb', line 96

def ==(other)
  if other.is_a?(Symbol)
    super(other.to_s)
  else
    super
  end
end

#to_html(xmldoctype = true) ⇒ Object 



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# File 'lib/hobo_fields/enum_string.rb', line 92

def to_html(xmldoctype = true)
  self.class.translated_values[self]
end

#validate ⇒ Object 



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# File 'lib/hobo_fields/enum_string.rb', line 88

def validate
  "must be one of #{self.class.values.map{|v| v.blank? ? '\'\'' : v} * ', '}" unless self.in?(self.class.values)
end