FactoryGirl.attributes_for(:item) not passing on POST #create - ruby-on-rails

Question

I try to pass these two create controller specs but for some reason it it not validating the Item object. Could it be that FactoryGirl.attributes_for(:item) are missing the profile and attachment required associations? If so, how can I pass it to attributes too?
describe "POST #create" do
context "signed in" do
login_user
context "with valid attributes" do
it "creates a new item" do
expect{
post :create, trend: FactoryGirl.attributes_for(:item)
}.to change(Item,:count).by(1)
end
it "redirects to the home page" do
post :create, item: FactoryGirl.attributes_for(:item)
response.should redirect_to Item.last
end
end
end
I got these errors
Failures:
1) ItemsController POST #create signed in with valid attributes creates a new item
Failure/Error: expect{
count should have been changed by 1, but was changed by 0
# ./spec/controllers/items_controller_spec.rb:42:in `block (5 levels) in <top (required)>'
2) ItemsController POST #create signed in with valid attributes redirects to the home page
Failure/Error: response.should redirect_to Item.last
Expected response to be a <redirect>, but was <200>
# ./spec/controllers/items_controller_spec.rb:48:in `block (5 levels) in <top (required)>'
This is the Item factory
FactoryGirl.define do
factory :item do
profile
after(:build) do |item|
item.attachments << FactoryGirl.build(:attachment, attachable: item)
end
end
end

Answer 1

I guess doing FactoryGirl.attributes_for isn't actually a build, so the after(:build) won't fire. How about this:
FactoryGirl.attributes_for(:item, :profile_attributes => FactoryGirl.attributes_for(:profile), :attachments => [FactoryGirl.attributes_for(:subject)])
Probably a good idea to try this line in the rails console first to see what the hash comes out like :)