Undefined method `serialize_to_hash` on Serializer page

[CodingItWrong]

guide/serializer.html suggests that we can do:

post = Post.find(1)
JSONAPI::ResourceSerializer.new(PostResource).serialize_to_hash(PostResource.new(post, nil))

But when I do the equivalent in 0.10.2, I get the error:

undefined method `serialize_to_hash'
 for #<JSONAPI::ResourceSerializer:0x00007fae9ec1cbf0>

Looking through the source of JSONAPI::ResourceSerializer, #object_hash seems to be the currently-available method that meets that need. The code succeeds for me with the following change:

post = Post.find(1)
JSONAPI::ResourceSerializer.new(PostResource).object_hash(PostResource.new(post, nil), nil)

(Note that #object_hash takes two arguments, so we pass nil for the second.)

I would PR this change to the page, but I'm unsure of the correct changes for the rest of the page.

[soltex1]

@CodingItWrong Did you find the issue?

[CodingItWrong]

@soltex1 I didn't figure out the correct changes to make on the page, no, so I wasn't able to do a PR to update it. As for the issue in the code itself, the alternate approach I mentioned above did work.

[soltex1]

Yes, I can confirm that using object_hash instead of serialize_to_hash works. Not sure why a very simple example doesn't work as mentioned in the documentation. Anyway, thanks for your quick reply! :)

[soltex1]

@CodingItWrong Well, it looks like the version 0.10.2 and even the latest one 0.10.5 doesn't contain the method serialize_to_hash, but the master does.

The documentation tells us to add gem 'jsonapi-resources' to the Gemfile which is going to install the 0.10.5, and then they use the method serialize_to_hash in their examples that doesn't exist on that version.

We might have to install the gem directly from the github by adding this line to the Gemfile:

gem 'jsonapi-resources', :git => 'https://github.com/cerebris/jsonapi-resources.git'

Unfortunately, I have a few conflicts with other gems and I wasn't able to test if this works.

[womanonrails]

Here is the issue about this problem on jsonapi-resources GitHub.

[benbonnet]

@soltex1 can confirm it works with gem 'jsonapi-resources', :git => 'https://github.com/cerebris/jsonapi-resources.git'

[HenrichJones]

@benbonnet worked for me!

[Genkilabs]

For those wanting to use '~> 0.10.7' (in my case Rails 5.2.8), you can swap out serialize_to_hash with object_hash but it requires 2 params. The second can be an empty hash.
For a nice TLDR drop-in, check out @xhocquet solution over on the 1149 issue:
https://github.com/cerebris/jsonapi-resources/issues/1149#issuecomment-935096193