RESTFul About 404 error handling

[xutl]

What steps will reproduce the problem?

1. open restful url http://localhost/api/users/1
   return 200 ok
2. open restful url http://localhost/api/users/111111111
   return 404 this is normal
3. When opening a non-existent URL e.g http://localhost/api/abcdefg
   Returned the html 404 page,He should return the same format as xml or json as in the second step.

What is the expected result?

Returns a formatted xml or json.

What do you get instead?

Additional info

Q	A
Yii version	2.0.12
PHP version	7.1.6
Operating system	centos 7.1

[schmunk42]

Do you have an ApiController or a UsersController in an api module? If the latter your app might not know about the fact that you wanted an API page, when you're serving mixed content.

[samdark]

As @schmunk42 said, in order to respond 404 in this case, custom error handler is needed. I think it's a good idea to document it. Pretty standard use case.

[dmirogin]

This usecase has not documented yet.

[pgyf]

it is handled in this action

        'errorHandler' => [
            'errorAction' => 'site/error',
        ],

[sunjayaali]

@phpyii have you try in rest application?
@samdark so you mean custom error handler is not available until 2.0.16?

[cebe]

custom error handler does already work, the only thing that is missing in this issue is documentation.

[jurchiks]

I've tried all kinds of "solutions" for this problem and none of them work for me.
My current setup:

• yii2-advanced template
• backend contains a module called api:

'modules' => [
    'api' => [
        'class' => backend\modules\api\Module::class,
    ],
],

• this module MUST always respond with JSON, even if a route is not found (which is to be expected from a JSON API)

All existing actions work perfectly fine.
However, when I make a request to a non-existing action in this module (e.g. /api/index/no-such-action), I get the default site/error HTML page! It even ignores the Accept header, which is set to application/json.
Module#init() is not even called, thus anything I try to attempt to do there or in the controller is useless.

How am I supposed to work around this? I don't see a non-hackish way to fix this.

[yii-bot]

Issue moved to yiisoft/yii-api#13