Help with habtm models in one form

Rails
1

Hi I have a post and a category model
class Post < ActiveRecord::Base
has_and_belongs_to_many :categories
end
class Category < ActiveRecord::Base
has_and_belongs_to_many :posts
end
I created join table migration files

Now I wanna create category while creating post I mean user can choose
category or add a new category to this post how can i imlement this?

–

2

I did something like this in the past in a similar situation.

I have a drop down of categories that has all the valid categories and
an additional category injected as ‘New Category’. When you user selects
the ‘New Category’ from the drop down, I display another textbox (I did
this with ajax call) for the user to provide new category name. In the
controller if this new_category param is detected than a new category is
created first before creating the post associated with that new
category.

-Navjeet

Fatih Genç wrote:

Hi I have a post and a category model
class Post < ActiveRecord::Base
has_and_belongs_to_many :categories
end
class Category < ActiveRecord::Base
has_and_belongs_to_many :posts
end
I created join table migration files

Now I wanna create category while creating post I mean user can choose
category or add a new category to this post how can i imlement this?

–