Call to perl script in image tag does not execute

[parashar123]

There are two pl files: realtimechart.p l and realtimedemo.pl
realtimechart generates a realtime graph which would an image file(png,gif,jp eg etc)
and realtimedemo generates a html file alongwith the graph produced by realtimechart and also refreshes it using the image id. But somehow it is not taking the chart generated from realtimechart.p l. There is some problem in this statement

<img id="ChartImage1 " src= "realtimechart. pl?chartId=demo Chart1">

because instead of executing realtimechart.p l, it treats everything as non-executable statements

Please help me out with this quickly

[KevinADC]

this is just some html code that calls the script:

<img id="ChartImage1 " src= "realtimechart. pl?chartId=demo Chart1">

I am not sure what you mean by: "it treats everything as non-executable statements".

[parashar123]

it is not executing realtimechart.p l and treating everything after "src = " as just a file location

[numberwhun]

@parashar123
Looking at the options available to the img tag, src is definitely one of them, but if you read the description of src in that link, it is supposed to be the url of the image to display. I personally don't know if putting a Perl script with its options into their would actually return an image to be displayed.

The script would probably have to be cgi since what is expected is a URL, so you may want to format the src as follows:

<imgid="ChartImage1" src="http:/localhost/cgi-bin/realtimechart.pl?chartId=demoChart1">
 

You may want to try whatever you use for the URL in your own browser and see what it returns first as it will have to return an image.

Regards,

Jeff

[KevinADC]

@parashar123
Thats fine, because it is a file/uri path. But why it is not causing the perl script to run and return an image is the part that is the problem. Without more information I also suggest you try using the full URL to the perl script in the image tag. If that does not help continue reading the instructions that hopefully came with the script for further advise. I don't know anything about that script so there is no way to help you further.

Jeff,

The <img> tag only needs the correct MIME declaration and a valid image file and the browser will display it, similar to how you can use a perl script to generate an entire html document on the fly and return it to the browser and the browser will display it just like any other html document.

[numberwhun]

@KevinADC

Ok then, that's fine, but I would still make sure that the script call that was input into the src piece actually returns an image file and not an error.

Regards,

Jeff

[KevinADC]

Yes, the img tag will not display text, so if the perl script is returning an error the person will need to look in the servers error log or try running the script directly.

[eWish]

Not printing the proper MIME type in the headers could be causing problems.

--Kevin

[parashar123]

I tried putting the path of the script file in the src path, butit didn't work. Now I can't use http as I would need some server where I can store that script but unfortunately I don't have any such thing.
I tried
<img id="ChartImage1 " src="C:/Perl/lib//cgi-bin/realtimechart.p l?chartId=demoC hart1">
but it didn't work, can anybody suggest how to execute this script on the local machine in src

Thanks all for your hrlp

[numberwhun]

@parashar123
Unless you can possibly share the script with us (enclosed in code tags) so that we can see it, I have to say no. We are not familiar with the inner workings of the script and like you, would have to take a look at it to see how it works.

Regards,

Jeff