问题
I want to create address-book-like set of models to represent company, person, location, etc. This looks like very typical address book, I wonder if somebody did it already with ruby on rails 3. The question appeared not (only) because of my laziness, but also because "best practice" approach is usually well-developed, have fewer pitfalls, etc. Currently I think about following models/fields:
Company:
- name
- has_many :persons
- has_many :locations
has_many :urls, :through => :urlcatalog
the reason to have URL catalog is a possibility to assign notes to URL
Person:
- name maybe split to first-middle-last
- phone
- has_one :location
has_many :emails :through => :emailcatalog
the reason to have email catalog is the same as above: one can assign "private", "office" labels to it. many phones can be organized this way as well.
Location
- address optional
- has_one :city
has_one :country
city or country should be present
City
- name
- has_one :country
Country
- name
any comments on this concept, thoughts, working examples, etc are welcome!
回答1:
You should look up polymorphic associations. This means your location will be better organized and it will be easier to get parent etc...
Good example over at RailsWiki
来源：https://stackoverflow.com/questions/6140215/rails-models-for-address-books-company-person-address