Hi,
Yea, I wasn't expecting TML shorthand, rather some way to load the
proper information in the page class.
I couldn't really see how the ContextAssetFactory would be useful. I was
under the impression internal services shouldn't be used, in fact trying
to Inject it gives an error.
In terms of loading the file as a Resource (required parameter for the
createAsset method), I've had trouble with that as well.
I have a database entity that stores a reference to the image file (this
is the same entity in the grid I mentioned before). When creating or
editing this entity, I tried making a validation check that the file
actually exists in the system.
Resource resc = new ContextResource(cimpl,
"src/main/webapp/layout/images/products/"+link);
if(!resc.exists()){
debug("\nImageLink is to a non-existant file! " + resc.getPath() + " get file: " +
resc.getFile() + " to url: " + resc.toURL() + "\n\n");
_form.recordError(imageLink
,messages.get("image-link-non-existant"));
return;
}
Even though the files I tried definitely exist (I know because if I
remove the validation I can get some images to show in pages loading the
entity), the condition on !resc.exists() always fails.
I have code elsewhere that uses
Resource resc = new ContextResource(cimpl,
"src/main/webapp/layout/images/products/"+link);
to load .xml files with the beginning to the path "src/main/webapp/.."
that works, so I'm having a hard time understanding why it fails. The
other implementation is in components.reports package, while this one is
in pages.admin package. That wouldn't make a difference on the path
needed for the ContextResource, would it?
I actually got passed the filter issue by doing this:
instead of TML having <img
src="/app/assets/ctx/1.0/layout/images/products/${prod.imageLink}" />
I moved the src text to the page class
<img src="${getImageThumb()}" />
maybe that wasn't even the issue.. So it seems I am able to load the
images alright then.
I could still use some help with the Resource checking. Is that the best
idea for validating the existence of a file in the context (assuming I
get it to work properly)?
Thanks,
Rich
On 12/14/2010 06:52 AM, LLTYK wrote:
I don't think there's a tml shorthand. You'd use ContextAssetFactory in your
java code:
http://tapestry-users.832.n2.nabble.com/T5-How-to-load-image-Asset-from-filesystem-td2454924.html#a2455270
But that would generate the same /app/assets links, just not hardcoded. This
filter issue remains a mystery, tell us more about it. What do your css urls
look like?
Hi,
I'm having a hard time figuring out how to dynamically display some
images I have in a sub-path of my webapp/ folder in my Tapestry
application (1.5.0.5).
I have db entities that store the names of files in a folder in
webapp/layout/images/products/, and in a TML page using a grid, I
want to be able to display these images.
The only way I was able to get an image to display was to provide a
path like: /app/assets/ctx/1.0/layout/images/products/${prod.imageLink}
That gave me problems with my Application filter/dispatcher,
however, as it seemed to regard this is a page access outside the
scope of the user-session context and log out the user.
I'm pretty sure I shouldn't be hardcoding that reference to the
asset from a url anyway, how can I have it load the image through
tapestry like all the other images in the site, like the ones I load
through CSS that do not break the application filter/dispatcher?
I hope I was clear enough as to what my problem is.
Thanks,
Rich
