Module: Jason::Persistence::ClassMethods
- Defined in:
- lib/jason/persistence.rb
Instance Attribute Summary collapse
-
#new_record ⇒ Object
Returns the value of attribute new_record.
Instance Method Summary collapse
- #all ⇒ Object
-
#attribute(*args) ⇒ Object
PUBLIC Add attribute to persistence layer for this model.
- #data_type_for_attribute(attribute) ⇒ Object
- #defined_attributes ⇒ Object
- #defined_attributes_include?(symbol) ⇒ Boolean
- #find(id) ⇒ Object
- #method_missing(meth_name, *args, &block) ⇒ Object
- #with_id(id, &block) ⇒ Object
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(meth_name, *args, &block) ⇒ Object
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# File 'lib/jason/persistence.rb', line 27 def method_missing(meth_name,*args,&block) if meth_name.to_s.match(/find_by_/) conditions = meth_name.to_s.split("find_by_").last if defined_attributes_include?(conditions.to_sym) = {:klass => self} [conditions.to_sym] = args.pop return Encoding::PersistenceHandler::restore(:with_conditions, ) else super end else super end end |
Instance Attribute Details
#new_record ⇒ Object
Returns the value of attribute new_record.
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# File 'lib/jason/persistence.rb', line 16 def new_record @new_record end |
Instance Method Details
#all ⇒ Object
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# File 'lib/jason/persistence.rb', line 61 def all Encoding::PersistenceHandler::restore(:all,{:klass => self}) end |
#attribute(*args) ⇒ Object
PUBLIC Add attribute to persistence layer for this model.
Defines getter and setter methods for given attribute
The Setter methods converts the attribute into the given data type.
args - List of arguments:
* first argument - attribute name as symbol
* second argument - data type of attribute
Currently three data types are supported:
-
String
-
Integer
-
Date
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# File 'lib/jason/persistence.rb', line 87 def attribute(*args) attribute_name,attribute_type = args[0], args[1] unless DATA_TYPES.keys.include?("#{attribute_type}".to_sym) raise Errors::NotSupportedDataTypeError.new("This Kind of type is not supported or missing!") end cast_to = DATA_TYPES["#{attribute_type}".to_sym]#eval "Jason::#{attribute_type}" define_method attribute_name do instance_variable_get("@#{attribute_name}") end define_method "#{attribute_name}=" do |attribute| instance_variable_set("@#{attribute_name}", attribute.send(cast_to)) end defined_attributes << {:name => attribute_name, :type => attribute_type} unless defined_attributes.include?(attribute_name) unless defined_attributes_include?(:id) define_method :id do instance_variable_get("@id") end define_method "id=" do |val| instance_variable_set("@id", val) end defined_attributes << {:name => :id, :type => String} end end |
#data_type_for_attribute(attribute) ⇒ Object
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# File 'lib/jason/persistence.rb', line 46 def data_type_for_attribute(attribute) defined_attributes.detect{|item| item[:name] == attribute}[:attribute_type] end |
#defined_attributes ⇒ Object
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# File 'lib/jason/persistence.rb', line 50 def defined_attributes @defined_attributes ||= [] end |
#defined_attributes_include?(symbol) ⇒ Boolean
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# File 'lib/jason/persistence.rb', line 42 def defined_attributes_include?(symbol) defined_attributes.map{|item| item[:name]}.include?(symbol) end |
#find(id) ⇒ Object
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# File 'lib/jason/persistence.rb', line 54 def find(id) #with_id id do # klass_to_restore self #end Encoding::PersistenceHandler::restore(:by_id,{:id => id,:klass=>self}) end |
#with_id(id, &block) ⇒ Object
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# File 'lib/jason/persistence.rb', line 65 def with_id(id,&block) p id block.call end |