after specified API's serializers using format,the api.type requests are not found

[TommyLike]

if i specified the API's serializers using format:

format :json

the api will return 404 not found when called using api.type,such as:

/task/testcase.json

I found this issue in version 0.10.1 and it's ok in previous version

[dblock]

By previous version you mean 0.9.0, right?

This was introduced deliberately in #809. We've discussed undoing that, I would still merge a PR.

[chaixl]

I also meet this problem after upgrading Grape, #809 is a break change and big problem for me.

Before upgrading, I specified the API format:

format :json

I can access API by api and api.format_type
e.g.

/account/login

or

/account/login.json

After upgrading, /account/login.json will return 404 not found. If remove "format :json", only /account/login.json can be used.
access /account/login directly will return

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<error>
<message>cannot convert String to xml</message>
</error>

But, out client use both /account/login and /account/login.json to access our API before.

[dblock]

You should be able to restore the old behavior by ensuring you have more than one format "supported", so after format :json add another content-type via content_type :foo, 'foo/bar'. Let us know if that works. I am still looking for a PR for this.

[dblock]

The culprit is here.

[dblock]

This has been reverted via #1001, please test.