I have a block that references a background image, that is in my static resources. The example I am going by is :
background: url(../img/myimage.png) no-repeat;
but i get the following error:
GET https://org99.eu5.visual.force.com/img/a06.png 404 (Not Found)
What is the correct way to reference that resource in the block?
Check this documentation
https://www.salesforce.com/us/developer/docs/pages/Content/pages_resources_reference.htm
To reference a file in an archive, use the URLFOR function. Specify the static resource name that you provided when you uploaded the archive with the first parameter, and the path to the desired file within the archive with the second. For example:
url="{!URLFOR($Resource.TestZip,
'images/Bluehills.jpg')}" width="50" height="50"/>
(OR) if 1 is too confusing save the CSS/ JS/ Image or be it anything as a seperate static resource and reference it in VF page as
URLFOR($Resource.file_image)
URLFOR($Resource.file_CSS)
URLFOR($Resource.file_image)
I usually prefer the second method since I have never been comfortable with zip file and extending the path.
Update:
My ZIP file content:
The page saves even though u do not have the closing } bracket, check if you have formed the image tag and closed the { and } for the URLFOR function.
Make sure the syntax is correct for the image tag as well as the URLFOR.
<apex:page >
<apex:form >
<apex:image value="{!URLFOR($Resource.tezip, 'te.jpg')}" />
</apex:form>
</apex:page>
My output was :
![enter image description here][3]
UPDATE 2:
YOUR CODE IN MY ORG :D:
You can't detect if a resource is available in a formula field. You would necessarily need client-side detection (Visualforce). You can embed Visualforce pages inside a page layout, so this wouldn't necessarily be very complex:
<apex:page standardController="Product2">
<script>
(function(document, window, undefined) {
function showError(event) {
var target = event.target || event.srcElement, error = document.createTextNode("Image not found");
target.parentNode.appendChild(error);
target.parentNode.remove(target);
}
function onload() {
var image = document.createElement("img");
img.addEventListener("error", showError, true);
img.src = "/resource/ProductImages/{!Product2.ProductCode}.jpg";
document.body.appendChild(img);
}
window.addEventListener("load", onload, true);
})(document, window);
</script>
</apex:page>
Here, we try to load the image, and on failure, we show an error in its place. Note this code does depend on addEventListener, which is supported by every browser supported by their appropriate vendors (e.g. not IE8). If you care for IE8 support, add code to detect window.attachEvent and modify appropriately.
Best Answer
Use
URLFOR. Here is a good resource to get you started.OR