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NetTalk Web Server => Web Server - Ask For Help => Topic started by: johanl on September 21, 2012, 03:57:54 AM

Title: Images and their relative paths - help please
Post by: johanl on September 21, 2012, 03:57:54 AM

Hello

I build up a list of images and their desciptions in a memory file and display them in a ntws browse.

I upload the images to the web\uploads directory and can physically see them there but when I say .\web\uploads\image1.jpg no image is displayed but if I say .\uploads an image is displayed but that path does not event exist.

Where am i going wrong with this?

Regards
Johan

Title: Re: Images and their relative paths - help please
Post by: Bruce on September 21, 2012, 04:15:12 AM

the path for static files is relative to web.
In other words
images\whatever.png
is really
c:\something\web\images\whatever.png

cheers
Bruce

Title: Re: Images and their relative paths - help please
Post by: johanl on September 21, 2012, 07:22:27 AM

Hello Bruce

Are images stored in temporary files somewhere on disk as I display the image and the change the physical image but the old one remains?

Johan

Title: Re: Images and their relative paths - help please
Post by: johanl on September 21, 2012, 07:47:39 AM

Hello Bruce

Another dumb question in the followup to my previous one I build up an im-memory table of the images that I want to display. I copy them to the web\images directory (they are copied correctly), how do I then reference them?

A like this:  .\web\Images\DS07137-015.jpg
B Like this:  Images\DS07137-015.jpg

because currently only option B displays an image but that is like I said in my post 3 - a ghost image of a previous test not the one copied to the images folder.

Johan

Title: Re: Images and their relative paths - help please
Post by: kevin plummer on September 23, 2012, 02:57:01 AM

B

Try to refresh your browse as the image may be cached.

Title: Re: Images and their relative paths - help please
Post by: Bruce on September 24, 2012, 12:05:32 AM

Johan,

the images are almost certainly begin cached in the browser.
You can refresh your browser page (ie get the images again) by pressing Ctrl-F5 in the browser.

There are ways to get ti to _not_ cache the image, if you need to go that route, just ask.

cheers
Bruce

Title: Re: Images and their relative paths - help please
Post by: johanl on September 24, 2012, 03:09:52 AM

Hello Bruce

Correct image was cached, please explain to me how to change this

Johan

Title: Re: Images and their relative paths - help please
Post by: johanl on September 24, 2012, 03:10:35 AM

Thanks Kevin

Title: Re: Images and their relative paths - help please
Post by: Bruce on September 24, 2012, 06:02:14 AM

in WebHandler,
_SendFile method
set

self.ForceNoCache = true

but you'll want to check the filename, because you definitly want to cache as many static files (.js, .css, .png etc) as possible. So only turn this on for a very small number of files.

cheers
Bruce