Re: Learning Guile web. Stuck on returning an image.

[Nala Ginrut]

Hi Martyn!

2014年5月26日 上午6:30于 "Martyn Smith" <address@hidden>写道：
>
> Hi guys,
>
> I am attempting to create a website as part of a learning experience with guile. The code is originally based from ideas in https://www.gnu.org/software/guile/manual/html_node/Web-Examples.html. My code has progressed since the "Web Examples" page to support a more MVC style. So far, so good-ish. :-)
>

If you want to play web with Guile, I suggest Artanis, which is a web framework for it. It's easier than using the lower web api.

www.web-artanis.com

> Getting to the point of the email -- I am a bit confused how I would return a jpg image. For example: -
> <img src="" />
>
> The "1234" tells me which file to load and return.
>
> Being primarily a .NET developer, I am struggling to understand how to achieve such goal in guile. I have tried things like (read-file "/location/to/image.jpg" "r") but no luck. Also tried to understand converting to bytes in the documentation but again... no luck. Always getting a 500 error. Yes, I have included (content-type . (image/jpg)) etc.
>

Please attache you complete code. But I guess what you need is get-bytevector-all which dwells on (rnrs).
Usually, open file only return a file port, you have to read the content then.

> Can anyone give me a heads up on how to do such thing? How would I open the jpg file? How would it be returned?
>
> I don't think its worth providing any code here. I think the Web-Examples page is the best place to review code, and how I would return an image from that current codebase, etc.
>
> Thanks for any suggestions.
>
> mart