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我下面Rails的教程，並告訴我在靜態頁面控制器來輸入：NoMethodError軌找不到我的方法「喂」 - Rails的教程
def home
if signed_in?
@micropost = current_user.microposts.build
@feed_items = current_user.feed.paginate(page: params[:page])
end
end
這裏是RSpec的測試結果：
Failures:
1) Static Pages Home Page for signed in users should render user's feed
←[31mFailure/Error:←[0m ←[31mvisit root_path←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x5ae7480>←[0m
←[36m # ./app/controllers/static_pages_controller.rb:6:in `home'←[0m
←[36m # ./spec/requests/static_pages_spec.rb:29:in `block (4 levels) in <top (required)>'←[0m
2) User
←[31mFailure/Error:←[0m ←[31mit { should respond_to(:feed) }←[0m
←[31mexpected #<User id: nil, name: "Tim Green", email: "[email protected]", created_at: nil, updated_at: nil, password_digest: "$2a$04$5zT
aqLxQ5E6zT5DU.gGmaeS2qV9ypLOBdwJiXxu8WkjN...", remember_token: nil, admin: false> to respond to :feed←[0m
←[36m # ./spec/models/user_spec.rb:32:in `block (2 levels) in <top (required)>'←[0m
3) User micropost associations status feed
←[31mFailure/Error:←[0m ←[31mits(:feed) { should_not include(unfollowed_post) }←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x5bb1c80>←[0m
←[36m # ./spec/models/user_spec.rb:173:in `block (4 levels) in <top (required)>'←[0m
4) User micropost associations status feed
←[31mFailure/Error:←[0m ←[31mits(:feed) { should include(older_micropost) }←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x5bdfdd8>←[0m
←[36m # ./spec/models/user_spec.rb:172:in `block (4 levels) in <top (required)>'←[0m
5) User micropost associations status feed
←[31mFailure/Error:←[0m ←[31mits(:feed) { should include(newer_micropost) }←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x5c6f718>←[0m
←[36m # ./spec/models/user_spec.rb:171:in `block (4 levels) in <top (required)>'←[0m
6) Authentication authorization as wrong user visiting edit page for different user
←[31mFailure/Error:←[0m ←[31mbefore { visit edit_user_path(wrong_user) }←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x6149358>←[0m
←[36m # ./app/controllers/static_pages_controller.rb:6:in `home'←[0m
←[36m # ./spec/requests/authentication_pages_spec.rb:110:in `block (5 levels) in <top (required)>'←[0m
7) Micropost pages micropost creation with invalid information should not create a micropost
←[31mFailure/Error:←[0m ←[31mbefore { visit root_path }←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x61a3df0>←[0m
←[36m # ./app/controllers/static_pages_controller.rb:6:in `home'←[0m
←[36m # ./spec/requests/micropost_pages_spec.rb:11:in `block (3 levels) in <top (required)>'←[0m
8) Micropost pages micropost creation with invalid information error messages
←[31mFailure/Error:←[0m ←[31mbefore { visit root_path }←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x43aaba0>←[0m
←[36m # ./app/controllers/static_pages_controller.rb:6:in `home'←[0m
←[36m # ./spec/requests/micropost_pages_spec.rb:11:in `block (3 levels) in <top (required)>'←[0m
9) Micropost pages micropost creation with valid information should create a micropost
←[31mFailure/Error:←[0m ←[31mbefore { visit root_path }←[0m
←[31mNoMethodError:←[0m
←[31mundefined method `feed' for #<User:0x5a73f50>←[0m
←[36m # ./app/controllers/static_pages_controller.rb:6:in `home'←[0m
←[36m # ./spec/requests/micropost_pages_spec.rb:11:in `block (3 levels) in <top (required)>'←[0m
Finished in 7.74 seconds
←[31m114 examples, 9 failures←[0m
基本上它是爲「進料」方法返回NoMethodError，我理解錯誤，但我找不到在哪裏定義這個方法，如何做到這一點，在思路中披露將返回新聞提要，有什麼幫助？