Undefined Method error

rubyonrails-talk
1

OK. I have 4 models, item/category/subcategory/brand

association like following

item belongs_to :brands belongs_to :categories belongs_to :subcategories

brand has_many :items

category has_many :items has_many :subcategories

subcategory has_many :items belongs_to :category

I also have "category_id", "brand_id", "subcategory_id" as integer, in @items

I have following in item/index view

<% for item in @items %> <%=h item.category.category_name %> <%=h item.brand.brand_name %>

I got undefined method "category" error message, but no error message for "brand"

In rails console, I tried like following

c=Item.find(:first) c.brand.brand_name

above I can got the brand_name correctly. But

c.category.category_name

I got same error message "undefined method 'category' "

Why would this happen?

2

OK. I have 4 models, item/category/subcategory/brand

association like following

item belongs_to :brands belongs_to :categories belongs_to :subcategories

belongs_to should be singular

Fred

3

Hi Fred, Sorry that's my fault. in my code actually it's singular. Because "brand" part works fine :slight_smile:

item belongs_to :brand belongs_to :category belongs_to :subcategory