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The last attribute was added in Coldfusion MX 7. The fileField attribute must correspond with the file input field defined in our form.
The destination should be an absolute path to a directory on the server. If you do not specify an absolute path, the destination path will be relative to the Coldfusion temp directory which you can obtain with GetTempDirectory. The nameConflict attribute is optional, but should be specified in case a file already exists with the same name. In that case, you have four options: Error : An error message is displayed with the page processing aborted.
The best that I could do was to change the NameConflict attribute in the CFFile tag from MakeUnique to Error and upload two files of the same name, which threw the following error:. There was a problem uploading file 2: File overwriting is not permitted in this instance of the CFFile tag. So, it seems to be working; but, I just want to stress that I couldn't generate a file system error and therefore some of this code is still theoretical.
Additionally, I build the page such that the number of files to be uploaded can be variable. FileCount variable. I know that this kind of stuff is handled very Web 2. There is no technical reason for this. I know that the loop increment defaults to 1. However, since many of my posts are meant to help people learn, I believe that it is best to spell everything out explicitly so there is no mystery and people can concentrate on the real task at hand.
A nice addition for the beginners out there might be to use the result attribute and show'em how it can be used to interact with the db.
I tried this code to upload multiple files, which worked great. However, while the files are uploaded to the right directory, I wanted to upload the name of files to my database. Issue 1 - The upload runs successfully, but I am not getting the right filenames populated on the database.
Issue 3 - Could we specify the file size. Karim: Issue 1. Replace 'file intFileIndex ' with ' cffile. ServerFile ' - this is the name that CFFile saves the file as on the server. I discovered a problem with the CF file upload thing: file parameters with the same parameter name. They all upload to CF, you just can't retrieve them as easily. You have to do some undocumented CF to get it to work. Basically, retrieve the temporary CF files from disk yourself. Parsing temp files seems like a lot of work to do for the sake of naming files the same thing; I would suggest just having file inputs with different names.
After all, that is really the intent of form fields - to provide unique sets of data. I am not sure that you should think of files as a single group When the page is submitted to the server for real or via XHR , you assume title[1], description[1], and file[1] all go together.
You can count how many items you have by counting the titles. In fact, it makes enumerating your values much easier because there's none of that "title index " complexity. The next question would be how do you do all the labels and IDs. Well, these just need to be unique, not sequential. So make them unique. I am not sure how it is possible to separate the Title and Description fields in your form post? If either the Title or the Description contain a comma, doesn't that mess everything up?
Perhaps this is just a ColdFusion thing, but when you post a form with duplicate names, they get concatenated into a list. For example, checkbox with the same name ids would become:. Granted, the good thing about the form and url scopes are their ease of retrieving values. Assuming you only want the first value or there are no commas. But they break even the simplest checkbox lists with same name, different values, values containing commas.
It made it nice to do url["foo"] and url["foo"][1], but only if there's no commas. It wouldn't have hurt to provided more advanced objects as well. I use simple scripts to parse the query and body if needs be. You can get an value array by index or a struct by name, array of values. Out of curiosity, where are you grabbing the form data from? Where are you getting the raw data? Loop through uploaded files via count , grab data for each file from its temporary file, and delete its temporary file.
I think you can use getHttpRequestData to get the original filename and extension, I can't remember. Next, display the images related to the ID. Perhaps you could combine this demo with the following one which demonstrates BLOB data type usage :. Hey Ben, I think Alex touched on a topic that I'm actually interested in digging into right now.
My question is how do I determine the original filename? What I'm doing is uploading the file and directly inserting it into blob database. It just irks me to have to cfupload the file to some tmp path, readbinary it before putting it into the database. I figure that instead of cfuploading, I can just readbinary the tmp file and insert that data into the db directly.
I don't know enough about how ColdFusion handles the binary form post to answer that. Understandable - it certainly adds an extra step. Errors will be populated in the specfied variable name when continueOnError is true. After the file upload is completed, this tag creates an array of structures that contains upload failure information for each upload failure.
Lets you specify a name for the variable in which cffile returns the result or status parameters. If you do not specify a value for this attribute, cffile uses the prefix cffile.
For more information, see Usage. Use this tag in the page specified by the action attribute of a cffileupload control. This tag uploads save the files that the cffileupload control sends when the user clicks the Save File button. After a file upload is completed, this tag creates an array of structures specified by the result parameter.
Each structure in the array contains upload result information for one file. You can control the maximum file size of the upload by specifying the server Request Throttle Threshold or the Settings page of the Administrator Server Settings section. Legal Notices Online Privacy Policy.
See also. For example,. Error: file is not saved. Josh - it might be worth setting up the infrastructure for your ColdFusion server or whatever server-side infrastructure you use to talk to S3 and pull files down as needed. S3 is awesome, but pretty limited in terms of file manipulation. If you ever want to dynamically ZIP files, for example, you can't do that on S3.
There are JS solutions for cropping and applying filters to images, but you're probably going to get better options and performance on the server -- for now at least! Yeah, there's definitely certain image assets that can just be copied. And yeah, the ZIPing up of images well logical collections of a number of things is on our soon-to-be-done roadmap.
I was just thinking about that as well. Even so, however, pulling things from S3 to the data-center is probably going to be significantly fast.
Even if we had to download MB of stuff which is larger than we would have to, most likely , I don't think that will add a significant wait time. At least not in some small amount of testing that I've done. And if your server connection to S3 is that slow, you'll have other issues if you ever need to do anything else on AWS. So I'm not sure of the benefit of doing all the extra client-side heartache vs just uploading it from CF once the final chunk arrives I think the issue is not so much that the server connection is slow, it's that the client-server connection is slow.
And, I think this is perhaps very specific to file-upload. I know that when I am at the office, uploads are super fast because we have some sort of business-grade internet connection. However, when I am at home using my persona internet connection, uploading the same file can take like times as long.
During that extended upload time, I can see from Fusion Reactor that a ColdFusion thread is being used to read in that file. So, if a user's connection causes them to need seconds to upload a file, that's seconds that ColdFusion needs to be watching that POST.
Now, if we can, instead have people upload directly to Amazon S3, then S3 needs to worry about that second upload time. Once the file is uploaded, however, pulling the file down from S3 to our production server if we need to will probably take milliseconds due to the massive data-center connections. Well, that's why we chunk. If a 5 meg file takes 20 seconds, it's not going to take much longer in blocks of k or whatever, but you don't see a scary spike for average time in FusionReactor Oh, and of course you've got upload feedback for chunked uploads in PLUpload too, which users find reassuring.
To be honest, I don't really understand what Chunking is and what implications it has. If I chunk a file in Plupload, do I have to manually glue it back together on the server?
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