rails-activerecord

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Rails extending ActiveRecord::Base

I\'ve done some reading about 开发者_开发问答how to extend ActiveRecord:Base class so my models would have some special methods. What is the easy way to extend it (step by step tutorial)?There are sev[详细]

2022-12-21 16:37 分类：问答
Modeling relationships between spots and checkins ala Foursquare

Here\'s the scoop: As a learning exercise, I\'m trying to write a Rails clone of one of the many location-based games out there (Foursquare, Gowalla, etc.) I have Users who create and check in to Sto[详细]

2022-12-20 14:26 分类：问答
Rails has_one :through association

Rails has a has_one :through association that helps set up a one-to-one association with a third model by going through a second model. What is the real use of that besides making a开发者_Python百科 s[详细]

2022-12-17 13:46 分类：问答
Ruby on rails - Reference the same model twice?

Is it possible to set up a double relationship in activerecord models via the generate scaffold command?[详细]

2022-12-16 10:46 分类：问答
What is Ruby on Rails ORM in layman's terms? Please explain

I am having trouble understanding ORM in Ruby on Rails. From what I understand there is a 1:1 relationship between tables/columns and objects/attributes. So every record is an object.[详细]

2022-12-14 18:54 分类：问答
Having trouble getting started with Ruby on Rails

I\'m wondering if someone can address some of the issues I am having? I create a rails app: rails myapp -d mysql[详细]

2022-12-13 12:55 分类：问答
Ordering of has_and_belongs_to_many associations

In my rails app I have two models that are related by has_and_belongs_to_many.This means there is a join table.[详细]

2022-12-11 12:18 分类：问答
Where should calculation logic go in a Rails app?

I have an app that models a House. The House has_many Rooms, Rooms has_many Lights and Small_appliances, etc. I also have a controller called Calculator that is how the app is accessed. Data is added[详细]

2022-12-10 06:53 分类：问答
Treacherous ActiveRecord behavior?

I have a Post class with a vote method which creates a Vote instance This doesn\'t work def vote(options)[详细]

2022-12-09 06:09 分类：问答
Rails: Access to current_user from within a model in Ruby on Rails

I need to implement fine-grained access control in a Ruby on Rails app. The permissions for individual users are saved in a database table and I thought that it would be best to let the respective res[详细]

2022-12-07 23:42 分类：问答