has-and-belongs-to-many
Rails: What is the correct Association for these models?
What is the correct association for this problem? There are three models: Residents Parties Addresses Each Resident and Party has an Address[详细]
2023-03-15 02:09 分类：问答Save has_and_belongs_to_many link in basic RoR app
I try to learn the has_and_belongs_to_many relationship between my 2 fresh new and simple models Product and Author, where a Product can have many authors and where author can have a lots of products.[详细]
2023-03-14 13:31 分类：问答rails3 has_and_belongs_to_many customization
Book has_and_belongs_to_many Students Student has_and_belongs_to_many Books In BooksStudents model I want to add \"status\" field to store if it is rented,开发者_JAVA百科 bought ..etc. and be able to[详细]
2023-03-11 00:18 分类：问答CakePHP transparent saving of unique data
I have models Person and Phone/Email with HABTM relationship. After some pain I found out, that my life is easier, when I break HABTM into: Person hasMany PeoplePhone, Phone hasMany PeoplePhone, Peopl[详细]
2023-03-10 22:28 分类：问答User updating of has_many :through associations
In my app, the administrator of a company defines a set of attributes to be associated with a location (for example, market size and geographical location).They also define which values are acceptable[详细]
2023-03-10 16:55 分类：问答Postrgresql looking for the wrong many to many table with Rails 3
**UPDATE: I found this: \"Active Record expects intermediate join tables to be named with a concatenation of the tables it joins, in alphabetical order.\"[详细]
2023-03-09 03:18 分类：问答best way to save dependent objects in a has_and_belongs_to_many relation?
Hi I am new to rails and I would like to know what is the best way who save dependent objects in an HBTM relation.[详细]
2023-03-08 23:00 分类：问答HABTM best practice
I have 2 main entities, UserProfile and Property.Basically, the UserProfile needs to maintain 3 different lists of Properties (note, each list type will have additional properties)[详细]
2023-03-08 16:35 分类：问答Indices on `has_and_belongs_to_many` join-tables
When using a join-table [:left_id, 开发者_开发百科:right_id] in Rails, what indices should it have?[详细]
2023-03-08 15:45 分类：问答Polymorphic vs HABTM relationships for a tagging system
I am currently making a database for a rails application. This schema involves three models: Photo, Object and Tag. Both photos and objects need to be \"taggable\".[详细]
2023-03-04 05:29 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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