I created a simple example as a sanity check and still can not seem to destroy an item on either side of a has_and_belongs_to_many relationship in rails.
I must be missing something, when trying to define a HABTM association with 2 of my models.I have a \"Product\" table, and a \"Category\" table, and a \"ProductsCategories\" join table.In SQL Server,
I have 3 tables: \'cards\', \'tags\' and \'cardstags\', where cards HABTM tags Question: What query do I execute on the \'tags\' table to count the number of associated \'cards\' rows?
Through many iterations of testing, I just noticed that my join table that represents a HABTMrelationship between two models isn\'t removing entries when instances of these models get deleted. 开发者_
I\'m using a self referencing HABTM model with Participants. You sign up for an event and when you log in to your reservation/profile you see a list of other participants and you can choose to add you
Interesting segment of code that I can\'t get to work. I have the following models/relationships (unnecessary code excluded)
I\'m have this two classes, class User include DataMapper::Resource property :id, Serial property :name, String
I have two models related HABTM (documents and people). class Person extends AppModel { var $name = \'Person\';
In my rails app I have two models that are related by has_and_belongs_to_many.This means there is a join table.
I have 开发者_开发百科a user model with a HABTM relationship to groups.I do not want a user to be able to be in more than 5 groups, so would like to validate the length of the HABTM relationship.
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