我正在开发一个rails应用程序，目前正在进行测试。现在我有用户，会话和产品。用户和会话工作正常。但是当我运行我的产品测试套件（一天前运行正常）时，我现在在测试中遇到stack-level too deep错误。
我正在使用
'rspec-rails', '~> 3.3.0'
rails 4.1.8
active_model_serializers
products_controller_spec.rb
require 'rails_helper'
describe Api::V1::ProductsController, :controller => true do
describe "#GET show" do
before(:each) do
@product = FactoryGirl.create :product
get :show, id: @product.id
end
it "returns the product information of a certain id" do
product_response = json_response[:product]
expect(product_response[:title]).to eql @product.title
end
it "has a user as an embedded object" do
product_response = json_response[:product]
expect(product_response[:user][:email]).to eql @product.user.email
end
it { should respond_with 200 }
end
describe "#GET index" do
# added collection matchers (have(4)) gem, was core now a gem
before(:each) do
4.times { FactoryGirl.create :product }
get :index
end
# setting up to return the scoped product records
it "returns 4 unique products" do
products_response = json_response
expect(products_response[:products]).to have(4).items
end
it "returns the user object into each product" do
products_response = json_response[:products]
products_response.each do |product_response|
expect(product_response[:user]).to be_present
end
end
it { should respond_with 200 }
end
describe "POST #create" do
context "when it is successfully created" do
before(:each) do
user = FactoryGirl.create :user
@product_attributes = FactoryGirl.attributes_for :product
api_authorization_header user.auth_token
post :create, { user_id: user.id, product: @product_attributes }
end
it "renders the json response for the product created" do
product_response = json_response[:product]
expect(product_response[:title]).to eql @product_attributes[:title]
end
it { should respond_with 201 }
end
context "when it is not created" do
before(:each) do
user = FactoryGirl.create :user
@invalid_product_attributes = { title: "Smart TV", price: "Twelve dollars" }
api_authorization_header user.auth_token
post :create, { user_id: user.id, product: @invalid_product_attributes }
end
it "renders an errors json" do
product_response = json_response
expect(product_response).to have_key(:errors)
end
it "renders the json errors on why the product could not be created" do
product_response = json_response
expect(product_response[:errors][:price]).to include "is not a number"
end
it { should respond_with 422 }
end
end
describe "PUT/PATCH #update" do
before(:each) do
@user = FactoryGirl.create :user
@product = FactoryGirl.create :product, user_id: @user.id
api_authorization_header @user.auth_token
end
context "when a product is successfully updated" do
before(:each) do
patch :update, { user_id: @user.id, id: @product.id,
product: { title: "A Kind of TV" } }
end
it "renders the json response for the product updated" do
product_response = json_response[:product]
expect(product_response[:title]).to eql "An expensive TV"
end
it { should respond_with 200 }
end
context "when a product is not successfully updated" do
before(:each) do
patch :update, { user_id: @user.id, id: @product.id,
product: { price: "A Kind of thing" } }
end
it "renders a json error" do
product_response = json_response
expect(product_response).to have_key(:errors)
end
it "renders a json error explaining why" do
product_response = json_response
expect(product_response[:errors][:price]).to include "is not a number"
end
it { should respond_with 422 }
end
end
describe "DELETE #destroy" do
before(:each) do
@user = FactoryGirl.create :user
@product = FactoryGirl.create :product, user: @user
api_authorization_header @user.auth_token
delete :destroy, { user_id: @user.id, id: @product.id }
end
it { should respond_with 204 }
end
end
products_serializer.rb
class ProductSerializer < ActiveModel::Serializer
attributes :id, :title, :published
has_one :user
end
users_serializer.rb
class UserSerializer < ActiveModel::Serializer
embed :ids
attributes :id, :email, :created_at, :updated_at, :auth_token
has_many :products
end
这是我收到此错误后唯一更改的文件。我可以发布其他代码，但我认为它只与这些有关。任何帮助将不胜感激。
修改
堆栈痕迹
DEPRECATION WARNING: ** Notice: embed is deprecated. **
The use of .embed method on a Serializer will be soon removed, as this should have a global scope and not a class scope.
Please use the global .setup method instead:
ActiveModel::Serializer.setup do |config|
config.embed = :ids
config.embed_in_root = false
end
(called from <class:UserSerializer> at /Users//marketplaceapi/app/serializers/user_serializer.rb:2)
FFFFFFFF...FF....
Failures:
1) Api::V1::ProductsController#GET show returns the product information of a certain id
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
2) Api::V1::ProductsController#GET show has a user as an embedded object
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
3) Api::V1::ProductsController#GET show
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
4) Api::V1::ProductsController#GET index returns 4 unique products
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
5) Api::V1::ProductsController#GET index returns the user object into each product
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
6) Api::V1::ProductsController#GET index
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
7) Api::V1::ProductsController POST #create when it is successfully created renders the json response for the product created
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
8) Api::V1::ProductsController POST #create when it is successfully created
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
9) Api::V1::ProductsController PUT/PATCH #update when a product is successfully updated renders the json response for the product updated
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
10) Api::V1::ProductsController PUT/PATCH #update when a product is successfully updated
Failure/Error: Unable to find matching line from backtrace
SystemStackError:
stack level too deep
# /Users//.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/activesupport-4.1.8/lib/active_support/notifications/instrumenter.rb:23
#
# Showing full backtrace because every line was filtered out.
# See docs for RSpec::Configuration#backtrace_exclusion_patterns and
# RSpec::Configuration#backtrace_inclusion_patterns for more information.
Finished in 2.14 seconds (files took 3.17 seconds to load)
17 examples, 10 failures
Failed examples:
rspec ./spec/controllers/api/v1/products_controller_spec.rb:13 # Api::V1::ProductsController#GET show returns the product information of a certain id
rspec ./spec/controllers/api/v1/products_controller_spec.rb:19 # Api::V1::ProductsController#GET show has a user as an embedded object
rspec ./spec/controllers/api/v1/products_controller_spec.rb:25 # Api::V1::ProductsController#GET show
rspec ./spec/controllers/api/v1/products_controller_spec.rb:37 # Api::V1::ProductsController#GET index returns 4 unique products
rspec ./spec/controllers/api/v1/products_controller_spec.rb:43 # Api::V1::ProductsController#GET index returns the user object into each product
rspec ./spec/controllers/api/v1/products_controller_spec.rb:50 # Api::V1::ProductsController#GET index
rspec ./spec/controllers/api/v1/products_controller_spec.rb:62 # Api::V1::ProductsController POST #create when it is successfully created renders the json response for the product created
rspec ./spec/controllers/api/v1/products_controller_spec.rb:68 # Api::V1::ProductsController POST #create when it is successfully created
rspec ./spec/controllers/api/v1/products_controller_spec.rb:109 # Api::V1::ProductsController PUT/PATCH #update when a product is successfully updated renders the json response for the product updated
rspec ./spec/controllers/api/v1/products_controller_spec.rb:115 # Api::V1::ProductsController PUT/PATCH #update when a product is successfully updated
答案 0 :(得分：3)
两个序列化程序都有has_one / has_many关系。因此，每个都依赖于另一个表来确定哪个对象与之关联，从而导致堆栈溢出。
而不是在产品序列化程序中使用has_one :user，而是将其更改为belongs_to :user