Rest API - Translated Forms - CORS issue

[dabelard]

I am trying to update the translated forms we have running that use this methodology: https://nation.marketo.com/t5/product-discussions/marketo-form-localization-translations/m-p/53988#M.... 

I updated the submission endpoint, base url, etc to use the REST API information, but I am getting a CORS error.   I am also wondering if I need to reformat the information.  I was able to successfully submit in Postman, but when I added the code to this page: https://sovos.com/it/libreria-dei-contenuti/iva/post-brexit-iva-norme-e-book-proteggere-transfrontal... I end up with the CORS error in addition to some CSS issues.   

I am not sure how to resolve the CORS error, as I am using the URLs provided which are all new and substantially different from both the LP URL and the direct marketo ##--app.marketo.com URL as well. 

[SanfordWhiteman · Accepted solution]

The REST API is never to be used directly on web pages. The error is expected.

[shenhuidarren]

How it should be use?

[SanfordWhiteman]

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How it should be use?

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The Marketo REST API (like most such APIs) is for server-to-server or app-to-server communication. Not browser-to-server.

And even if you gateway requests from the browser through a back end that in turn communicates with Marketo, you must pay very close attention to per-IP rate limits. Otherwise, you’re letting anonymous people consume your API calls just by interacting with the page.

[dabelard]

Hi Sanford, 

So how do I update these forms?!  This was the solution I was given by Marketo support in order to replace the translated forms.  Is there a different way to update the original code you suggested / gave for translating forms.  We have hundreds of these forms across a dozen sites that are all going to stop working shortly due the depreciation of the original methodology for posting the forms. 

Please note: I am not a developer.  I am a marketer with an understanding of some code.  I learned the rest API functions on my own to update this per the direction I was given by Marketo Support. 

IS there a solution for this? 

[SanfordWhiteman]

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We have hundreds of these forms across a dozen sites that are all going to stop working shortly due the depreciation of the original methodology for posting the forms.

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Well, you have to use JavaScript that’s compatible with the new functionality. Certainly the REST API will never be the solution.

[dabelard]

Can you please expand on what you mean by that?  Is there new JS that works without the /save /save2 / POST methodology?   I will keep digging, but would appreciate any additional direction you can give.

[SanfordWhiteman]

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Can you please expand on what you mean by that?  Is there new JS that works without the /save /save2 / POST methodology?

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Yes, it needs to be modified for the new endpoints, like here: MktoForms2 :: Manual descriptor, localize <select> v2.0.0

[dabelard]

Thought this was working, but Marketo just shut it down again.  Still using depreciated endpoints save and save2.  Get functions 404. 

[SanfordWhiteman · Accepted solution]

Updated for compatibility with new library: MktoForms2 :: Manual descriptor, localize <select> v2.1.0