[英](Rails) Can't use variable made by FactoryBot in rspec
i have two model, post and comment post has many comment我有两个model,发帖和评论帖子有很多评论
this is my schema ->这是我的模式->
create_table 'posts', force: :cascade do |t|
t.string 'title'
end
create_table 'comments', force: :cascade do |t|
t.references :post, index: true, foreign_key: { on_delete: :cascade }
t.string 'content'
end
and my route is like ->我的路线就像->
resources :posts do
resources :comments
end
my post factory ->我的邮局 ->
FactoryBot.define do
factory :post do
sequence(:title) { |n| "title #{n}" }
end
end
my comment factory ->我的评论工厂 ->
FactoryBot.define do
factory :comment do
sequence(:content) { |n| "content #{n}" }
sequence(:post_id) { |n| n }
end
end
so i tried to use these in request respec.所以我尝试在请求规范中使用这些。
first i init the variable ()首先我初始化变量()
-comments_spec.rb -comments_spec.rb
let(:new_post) { create(:post) }
let(:comment) { create(:comment) }
then i use it然后我用它
describe '#edit' do
it 'returns :edit view' do
get edit_post_comment_path(new_post, comment)
expect(response).to be_successful
end
end
but i get this error ->但我得到这个错误 - >
Failure/Error: let(:comment) { create(:comment) }
ActiveRecord::InvalidForeignKey:
PG::ForeignKeyViolation: ERROR: insert or update on table "comments" violates foreign key constraint "fk_rails_2fd19c0db7"
DETAIL: Key (post_id)=(3) is not present in table "posts".
how can i change it to check access edit page?我如何更改它以检查访问编辑页面? and why my result makes InvalidForeignKey error?
为什么我的结果会导致 InvalidForeignKey 错误?
use association
in comment factory to create a post and associate to comment在评论工厂中使用
association
创建帖子并关联评论
FactoryBot.define do
factory :comment do
sequence(:content) { |n| "content #{n}" }
association :post
end
end
Then you can pass created post as a param while creating new comment.然后您可以在创建新评论时将创建的帖子作为参数传递。 If you do not pass the post as a param then it will create a new post using the factory defined for the post and associate it to a comment.
如果您不将帖子作为参数传递,那么它将使用为帖子定义的工厂创建一个新帖子并将其关联到评论。
let(:new_post) { create(:post) }
let(:comment) { create(:comment, post: new_post) }
FactoryBot.define do
factory :comment do
sequence(:content) { |n| "content #{n}" }
post_id { 1 } #or post_id { Post&.first&.id }
end
end
U can use association in factory.你可以在工厂中使用关联。 Bonus: U can also use association model id in factory.
奖励:您还可以在工厂中使用协会 model id。
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