Coldfusion check to see if file exists

As you probably heard, ColdFusion 8 has about or so image functions. Ok, it isn't quite that much, but there are quite a few of them. Probably the most common thing you will need to do is simple validation on a file upload.

What do I mean by that? Imagine a preferences form. It asks you things like your name, email address, and other items. It also lets you upload a picture of yourself. How do you validate that the file is an image? After the file is uploaded, it takes all of one call:. The isImageFile function simply checks and see if a filename points to an image file that ColdFusion can work with. Here is a slightly larger example:. In this code block, I not only check and see if the user selected something to upload, I also handle the upload, check to see if it is an image, and even handle the cleanup if not.

Note the special "Pirate" mode for errors. I love that. A complete example is included below. Tomorrow I'll follow this up with a simple size check. Include a name or walk the plank! Come for the solution, stay for everything else. Welcome to our community! I have a directory of images which also contains the cfml page that utilizes those images to populate a vertical scroller. Images and cfml are at the same level in the directory.

However, if he has only uploaded 9 of the 10 images then the image scroller shows the broken image symbol for that image. I have tried the following approach utilizing fileexists, but it does not work. In the example below, the line gets ignored - regardless whether the image3. Most Valuable Expert The Most Valuable Expert award recognizes technology experts who passionately share their knowledge with the community, demonstrate the core values of this platform, and go the extra mile in all aspects of their contributions.

Join our community to see this answer! Unlock 1 Answer and 2 Comments. Andrew Hancock - VMware vExpert. Connect and share knowledge within a single location that is structured and easy to search.

Hello is there a way to check if a function exists in coldfusion. It is throwing an error function is not defined. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Coldfusion check if function exists Ask Question. Asked 5 years, 8 months ago. Active 4 years, 11 months ago. Viewed 4k times. Improve this question. Keshav jha 1, 8 8 silver badges 19 19 bronze badges. You should not call a function in your code if it does not exist.

Normally though not always what you describe should not occur. If so, it is better to find out the cause and fix it, rather than applying a band-aid.