Handling Rest Api error response

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Nannu

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REST

API

Hi,

I am consuming Rest Api and I need to access value in the response text if status is not 200. I am using OnafterResponse Rest Api callback and in that I am converting JSON data(response text) into Outsystems structure and storing it in a local Variable. Please see picture below.

I need to access value of this local variable at screen level and based on that I will display or hide containers on my screen. I am not sure how can I access this variable at screen level.

Thanks

04 Sep 2020

Peter L

Solution

Nannu wrote:

Peter L wrote:

Hi Nannu,

You can try having this logic in a wrapper action that calls the API method and is exposed to your Screen module, rather than using the API OnAfterResponse.

That way you will be able to define your own action outputs.

Hi Peter,

API method will throw an exception if status is not 200. So I won't be able to get the response.

Hi Nannu,

You can throw your own custom exception at the end of the flow, use the deserialized Json as the exception message and catch it at your screen level.

See approach #2 here: https://www.outsystems.com/blog/posts/handling-http-status-codes-consuming-rest/

See solution in context

05 Sep 2020

Peter L

Hi Nannu,

You can try having this logic in a wrapper action that calls the API method and is exposed to your Screen module, rather than using the API OnAfterResponse.

That way you will be able to define your own action outputs.

05 Sep 2020

3 replies

Last reply 05 Sep 2020

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Nannu

Peter L wrote:

Hi Nannu,

You can try having this logic in a wrapper action that calls the API method and is exposed to your Screen module, rather than using the API OnAfterResponse.

That way you will be able to define your own action outputs.

Hi Peter,

API method will throw an exception if status is not 200. So I won't be able to get the response.

05 Sep 2020

Peter L

Solution

Nannu wrote:

Peter L wrote:

Hi Nannu,

You can try having this logic in a wrapper action that calls the API method and is exposed to your Screen module, rather than using the API OnAfterResponse.

That way you will be able to define your own action outputs.

Hi Peter,

API method will throw an exception if status is not 200. So I won't be able to get the response.

Hi Nannu,

You can throw your own custom exception at the end of the flow, use the deserialized Json as the exception message and catch it at your screen level.

See approach #2 here: https://www.outsystems.com/blog/posts/handling-http-status-codes-consuming-rest/

05 Sep 2020

Nannu

Peter L wrote:

Nannu wrote:

Peter L wrote:

Hi Nannu,

You can try having this logic in a wrapper action that calls the API method and is exposed to your Screen module, rather than using the API OnAfterResponse.

That way you will be able to define your own action outputs.

Hi Peter,

API method will throw an exception if status is not 200. So I won't be able to get the response.

Hi Nannu,

You can throw your own custom exception at the end of the flow, use the deserialized Json as the exception message and catch it at your screen level.

See approach #2 here: https://www.outsystems.com/blog/posts/handling-http-status-codes-consuming-rest/

Hi Peter,

That's the approach I am following right now and it's working fine but I don't wanna display exception message. How can I hide that?

05 Sep 2020

Vijay Malviya

Hi Nannu,

You can try with session variable.

VIjay M-

05 Sep 2020

1 reply

05 Sep 2020

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Nannu

Vijay Malviya wrote:

Hi Nannu,

You can try with session variable.

VIjay M-

Hi vijay,

I am using reactive web application.

Thanks

05 Sep 2020

Peter L

The exception message will only be displayed to users if the exception handler that catches it has a message node in the flow, you just need to replace that with your own handling logic.

05 Sep 2020

3 replies

Last reply 08 Sep 2020

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Nannu

Peter L wrote:

The exception message will only be displayed to users if the exception handler that catches it has a message node in the flow, you just need to replace that with your own handling logic.

Hi Peter,

Please have a look at the image below. I am not displaying any error message from Api response.

Also I am doing autosave after one minute and in that logic I didn't even add any exception but I am still seeing error coming from that logic flow as well. I checked in Service center logs.

Thank you for your time.

08 Sep 2020

Peter L

Nannu wrote:

Peter L wrote:

The exception message will only be displayed to users if the exception handler that catches it has a message node in the flow, you just need to replace that with your own handling logic.

Hi Peter,

Please have a look at the image below. I am not displaying any error message from Api response.

Also I am doing autosave after one minute and in that logic I didn't even add any exception but I am still seeing error coming from that logic flow as well. I checked in Service center logs.

Thank you for your time.

And for this flow have you tried debugging it as well? Are the API action and UI screens in the same module?

08 Sep 2020

Nannu

Peter L wrote:

Nannu wrote:

Peter L wrote:

The exception message will only be displayed to users if the exception handler that catches it has a message node in the flow, you just need to replace that with your own handling logic.

Hi Peter,

Please have a look at the image below. I am not displaying any error message from Api response.

Also I am doing autosave after one minute and in that logic I didn't even add any exception but I am still seeing error coming from that logic flow as well. I checked in Service center logs.

Thank you for your time.

And for this flow have you tried debugging it as well? Are the API action and UI screens in the same module?

Hi Peter,

Thank you for your help I just found out that I wasn't handling exception on my Auto save logic.

08 Sep 2020

Peter L

Hi Nannu,

Where are you seeing this exception message that you want to hide? Is it appearing to users in the UI or are you referring to the service center logs?

08 Sep 2020

1 reply

08 Sep 2020

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Nannu

Peter L wrote:

Hi Nannu,

Where are you seeing this exception message that you want to hide? Is it appearing to users in the UI or are you referring to the service center logs?

It's appearing in the UI. Whatever I am putting in exception message it's displaying that.

and this is what I am doing in OnAfterResponse.

08 Sep 2020

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