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handwritten-signature and base64

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Jarosław Kowalewski

handwritten-signature and base64

Hi,

I'm trying to change type of the control from anyURI to base64Binary and it almost works. Almost because below there is no correct base64 format.

I the result FR reports error.

demo https://demo.orbeon.com/demo/fr/orbeon/builder/edit/456f0d628bae89c2521d59c63f42751eded07392

Is it any way to fix it somehow?

Tested also in 2018.2.4 PE

//Jarek

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Alessandro Vernet

Re: handwritten-signature and base64

Administrator

Hi Jarek,

What do you mean by "change type of the control from anyURI to
base64Binary"? What are you doing exactly? And why, i.e. what are you trying
to achieve?

‑Alex

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Jarosław Kowalewski

Re: handwritten-signature and base64

Hi Alex,

I changed type in the bind from type="xf:anyURI" to "xs:base64Binary" as in the example url.

My goal is to have a signature encoded in base64 in the model instead of using URI to the saved content. Exactly the same as we have in the attachments.

//Jarek

wt., 23 cze 2020 o 07:03 Alessandro Vernet <[hidden email]> napisał(a):

Hi Jarek,

What do you mean by "change type of the control from anyURI to
base64Binary"? What are you doing exactly? And why, i.e. what are you trying
to achieve?

‑Alex

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Alessandro Vernet

Re: handwritten-signature and base64

Administrator

Hi Jarek,

The data is stored with the data URL (see link below). As you noted, that
URL has base64 prefixed by `data:image/png;base64,`, but isn't
`xs:base64Binary`. And this is why in the form definition, Form Builder puts
`<xf:bind type="xf:anyURI"/>`. This is correct, as a data URL is an
`xf:anyURI`.

Now you're saying that you would prefer the signature to be stored in
straight base64, so the form definition could have the type
`xs:base64Binary`? If so, is it maybe because you have a use case where it
is more convenient to have straight base64 than a data URL that contains
base64?

https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs

‑Alex

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Alessandro Vernet

Re: handwritten-signature and base64

Administrator

Hi Jarek,

Have you found a way to do what you were aiming for with regard to the
signature component and how the signature itself is stored in the form data?

‑Alex

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Jarosław Kowalewski

Re: handwritten-signature and base64

Hi Alex,

yes, all is clear. I must have had some sort of a blackout.

I thought that to have base64 I need to change the type from xf:anyURI to xs:base64Binary.

//Jarek

śr., 8 lip 2020 o 18:56 Alessandro Vernet <[hidden email]> napisał(a):

Hi Jarek,

Have you found a way to do what you were aiming for with regard to the
signature component and how the signature itself is stored in the form data?

‑Alex

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Alessandro Vernet

Re: handwritten-signature and base64

Administrator

Hi Jarek,

Got it, perfect then! (And I have to admit that I had at first been confused
my self, and thought that using `xf:anyURI` for the signature was a bug… but
it isn't.)

-Alex

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