polymorphic-associations

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Having two foreign keys into a single column

I have a problem in creating a table with a column that has two foreign Key relationships. Let me explain in detail.[详细]

2023-04-12 07:27 分类：问答
model association for a e-store app

I\'m developing an e-store app using ruby on rails and I\'m a bit confused about the model associations. It would help me if someone could give开发者_开发技巧 me an idea about the tables and their ass[详细]

2023-04-08 10:17 分类：问答
ThinkingSphinx Polymorphic relation problem | rails 3.1

I could not create index with thinking_sphinx for the simple polymorphic schema below. (Note: I am able to create index from has_many models but I want to create my indexes from \'belongs_to\' model ([详细]

2023-04-06 18:11 分类：问答
Update the timestamp on a polymorphic association in Rails

I have a Photo model that can belong to two other models and this is captured through a polymorphic association:[详细]

2023-04-04 04:49 分类：问答
Trying to avoid "Polymorphic Associations" and uphold foreign key referential integrity

I\'m building a site similar to Yelp (Recommendation Engine, on a smaller scale though), so there will be three main entities in the system: User, Place (includes businesses), and Event.[详细]

2023-04-01 00:40 分类：问答
2-way polymorphic association

I have a two-way polymorphic association. I have Assignments and Resources and they each can have one of a wikipage, weblink, or file.[详细]

2023-03-28 18:38 分类：问答
What is the best way to implement Polymorphic Association in SQL Server?

I have tons of instances where I need to implement some sort of Polymorphic Associa开发者_JAVA百科tion in my database. I always waste tons of time thinking through all the options all over again. Here[详细]

2023-03-27 09:35 分类：问答
Mixing polymorphic and 'has_many' associations

Two models: Review and User. Review has three relevant fields: user_id, reviewable_type, and reviewable_id. So, the associations look something like this:[详细]

2023-03-27 03:19 分类：问答
How to specify a polymorphic association in a fixture

I have this fixture: resource: name: my resource owner: user_1 (User) Resource is defined like this: class Resource < ActiveRecord::Base[详细]

2023-03-26 15:56 分类：问答
Polymorphic Associations in Rails for different 'author' models

How would a Polymorphic Association (here: Comments) be itself associated with开发者_如何学Go different types of Authors?[详细]

2023-03-23 12:01 分类：问答