Hi All,
         I am a newbie in rails. I am creating a new rails
application. Here I have 4 models.

1. User
2. Item
3. Application
4. Tag

The concept is

- Item belongs to User
- Item has many Tags
- Item has many application through tags
- Tags are hierarchical (i.e a tree structure, a child tag can be
related to a parent tag.)


Please help me, how to handle these Associations.

Thanks
Hirak

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