Set serialization_scope and scope is nil in serializer

[crustyratfink]

Expected behavior vs actual behavior

Expect to set
serialization_scope :view_context
in application_controller.rb

And in serializer:
delegate :current_user, to: :scope

and then access current_user in serializer.

Actual:
IssueSerializer#current_user delegated to scope.current_user, but scope is nil:...

Steps to reproduce

See above:
Set serialization_scope :view_context in application_controller.rb, delegate current_user to scope in serializer, try to access current_user in serializer.

Environment

ActiveModelSerializers Version (commit ref if not on tag): 0.10.6

Output of ruby -e "puts RUBY_DESCRIPTION": 2.3.1p112

OS Type & Version: OSX 10.12.4

Integrated application and version (e.g., Rails, Grape, etc): Rails 5.1

Backtrace

(e.g., provide any applicable backtraces from your application)
Module::DelegationError (IssueSerializer#current_user delegated to scope.current_user, but scope is nil: #<IssueSerializer:0x007fbd370c8bf8 @object=#<Issue id: 22, title: ...data removed>, @scope=nil, @root=nil, @polymorphic=false, @meta_key=:meta, @meta=nil, @wrap_in_array=nil, @only=nil, @except=nil, @key_format=nil, @context=nil, @namespace=nil, @serialization_options={}>):

[smeshko]

Hello, I have the same issue, any updates?

[bf4]

How are you rendering?

[kurko]

EDIT: nvm, started working out of the blue.

I got this same issue, except that mine is nil only within has_many do end blocks.

def title
  puts scope.inspect # => present
  object.title
end

has_many :comments do
  puts scope.inspect #=> nil
  object.comments
end

[bf4]

@crustyratfink @stantona To what extent does the documentation at https://github.com/rails-api/active_model_serializers/blob/0-10-stable/docs/general/serializers.md#controller-authorization-context help?

There's not enough information in any of these reports for me to investigate

[stratigos]

I deleted my comments - previously I thought I was having the same issue. Ill leave this note here in case anyone else runs into this:

There is no view_context for ActionController::API. Its supposed to be nil. The examples in the documentation use ActionController::Base.

[bf4]

There is no view_context for ActionController::API. Its supposed to be nil. The examples in the documentation use ActionController::Base.

@stratigos that seems like a good thing to add. Want to make a PR?

[bf4]

Addressed in #2215