I have four tables: jp_properties, cn_properties, jp_dictionaries and cn_dictioanries.
And every jp_property belongs to a jp_dictionary with foreign key "dictionary_id" in table.
Similarly, every cn_property belongs to a cn_dictionary with foreign key "dictionary_id" in table too.
Since there are a lot of same functions in both property model and both dictionary model, I'd like to group all these functions in abstract_class.
The Models are like this:
class Property < AR::Base self.abstract_class = true belongs_to :dictionry, :foreign_key=>'dictionary_id', :class=> ---ModelDomainName--- + "Dictionary"
### functions shared by JpProperty and CnProperty end
class Dictionary < AR::Base self.abstract_class = true has_many :properties, :foreign_key=>'dictionary_id', :class=> ---ModelDomainName--- + "Dictionary"
### functions shared by JpDictionary and CnDictionary end
class JpProperty < Property :set_table_name :jp_properties end
class CnProperty < Property :set_table_name :cn_properties end
class JpDictionary < Dictionary :set_table_name :jp_dictionaries end
class CnDictionary < Dictionary :set_table_name :cn_dictionaries end
As you can see from the above code, the ---ModelDomainName--- part is either 'Jp' or 'Cn'. And I want to get these string dynamically from the instances of JpProperty, JpDictionary, CnProperty or CnDictionary.
For example:
tempJpProperty = JpProperty.first tempJpProperty.dictionary #=> will get 'Jp' from tempJpProperty's class name and then apply it to the "belongs_to" declaration.
So the problem is I don't know how to specify the --- ModelDomainName--- part.
More specifically, I have no idea how to get subclass's instance object's class name within the parent class's body.
Can you please help me with this problem?