I have a little bit of an unusual situation I guess. I have a page for placing new orders and part of a new order is a variable (0-n) number of files that are to be uploaded and associated with the order on the back end. The user also needs to specify a description for each file.
I've used a couple jQuery upload plug-ins with great success, but in this case I'm not looking to upload a single file when the user hits "OK." What I really need to do is upload a file by passing a local path to some method that will do the upload.
Does anyone know of any plug-ins that do this?
Thanks!
Ajax Uploader could be helpful? I believe it allows multiple uploads.
Related
I have a form with a file input which accepts large files. The intention is to upload this file to a remote server.
<input type="file" id="userfile"></input>
When a user chooses a [potentially large] file, I want to redirect to a secondary page (on the same domain) which shows the upload progress along with other information.
I can use the native File API to grab the Blob and read the file with FileReader, but only on the page with the form (the first page). I want to delay this reading/uploading process until the second page.
Is there a way to POST the file reference somehow to the second page, and then upload the file from there? Or is this impossible by design for security reasons? Or, some way to store the file reference in a cookie or local storage to be read by the second page?
I could double POST - first to the secondary page, and then POST/PUT to the appropriate final destination. However, I want to avoid this redundancy, which would cause further delays for the user.
Is there a way to POST the file reference somehow to the second page, and then upload the file from there?
No.
To get this sort of effect, the usual way is to remove the second page from the process entirely and use Ajax for any communication you need to do with the server before uploading the file to the correct place.
How can I provide the user of a web-app with a download-link to programmatically created data in AngularDart?
I thought this would be an easy task, since the download of data could be handled via data-links. But it turns out that AngluarDart doesn't let me use data-links since they are considered unsecure. In a pure Javascript environment I would use Filesaver.js, but also this is not possible with AngularDart (at least I didn't find a way to use it there).
What I really want to do: I create data in the app with code. At the end i have a json-structure that needs to be downloaded to the client computer of the user. He should be presented with a file select dialog where he can enter a filename and then the data should be saved there. And this should be initiated by a click on a button.
Up to now i didn't find a working way to make this happen in AngularDart. I tried BrowserClient, a-tags with download attribute, forms with data-url, but nothing works.
If anybody could give me a hint how to make this work, I would be very happy. A hint on how to use Javascript-Libraries (like FileSaver.js) in AngularDart would also be welcome.
I don't use Flutter and also I need this to work in the browser. So File from dart:io is no solution for me (this will be one of the first things you find, when searching for a solution). Also it is no solution to save the file to the server and download it to the client.
I am creating browser based video editing tool. I want a user to first download a ~70mb javascript file and store it somewhere on his computer. I want to link that file when my website is opened. How can I achieve that.
EDIT
What i meant is that there are various files like js1.js,js2.js... all sums upto 70mb . So i will offer a zip folder to download and only link js1 or js2 file etc depending on the effects user wish to apply
i am sorry to inform you but i think there is something really wrong with what you are trying to do.
A "solution" would be to just cache the javascript on the user's browser so any subsequent requests parse the cache instead of requesting the resource again from the server.
You should know however that if you are in need to download ~70mb of a javascript file you are doing something wrong. I have a whole web app project that when published the total size is around 60mb, all files required to properly run included, and its a damn big codebase in there.
I find it very hard to believe there is ever a need for a single javascript file to be that big, in any case maybe a simple caching should do the trick
That is actually done automatically. Once you add a <script> tag with a link to a local js file (also stored on the server) the file is loaded automatically.
See HTML <script> src Attribute for more information on that.
You can only reference to js files on the server. Files on the server could look like this:
index.html
somefancyjsfile.js
You can then reference from inside your html file to the js file via the <script> tag.
I'm not sure though if the size is not a bit too much...
I was looking at the upload script here:
http://demo.tutorialzine.com/2013/05/mini-ajax-file-upload-form/
It is using jquery file upload to upload multiple files at once. I would like to know how to pass the order of the files that were selected to the upload.php script. ie. if you have 1.jpg, 2.jpg, 3.jpg, 4.jpg, and 4 finishes uploading first, can upload.php receive a variable that tells it that it is the 4th image that was selected? Does jquery file upload have a way of adding the order to the form action perhaps?
Thanks in advance.
It should automatically upload and read the data in the order it was received once it hits the upload.php layer. So just make sure you upload the files in the order you want them.
Well it was a really easy fix once I found it. There is a variable in the jquery.fileupload.js file called sequentialUploads. Set it to true, and it will force the order of uploads to be the order in which the files are selected.
I am building a Discussion Forum as part of a bigger application I am building, the forum is just 1 section of the Application.
For my TextArea fields when posting a new Topic or a Post Reply, I have decided that nothing is as good as the PageDown Markdown Library. It is the same one that StackOverflow uses on all their sites and it works better than many of it's competitors.
The way the library ships though, I am not happy with the default Insert Image functionality. You hit the button to insert an image and it allows you to enter a URL for an Image and then it inserts the proper MarkDown syntax to show the linked image.
This just won't cut it. I need the functionality that you see on StackOverflow! Very similar anyways.
I need it to show a Dialog when you click the Insert Image button, like it does now, but instead of just an input field for a Image URL, it will have 2 filed options...
Upload image from your computer
Insert an Image URL and it will then DOWNLOAD the image from that URL and insert it into the post just as if you had uploaded it from your computer. This is important to not confuse this step. IT should not simply insert the Image linking it to the original Image URL. Instead it will take that URL and download/upload the Image to the same server that the upload from computer option does and then it will insert the NEW Image URL pointing to the newly uploaded image!
Based on some simple HTML like below for a Dialog window with a filed for my Upload from Computer functionality, which I already have working. I need to come up with some JavaScript and PHP that will download/save a remote image to my upload folder on my server when a button is clicked using only the URL that will be inside the URL text input field.
So it will need to do a few things...
Fetch and save an image file to my uploads folder using PHP when the only thing that the PHP function will receive is a URL of the image which could be on the same server or most likely a remote server.
After successfully saving/uploading an image from the URL, the PHP function will return a JSON string with the status/error and if successful then it will also return the actual URL and filename of where the new image is saved on the local server. The JavaScript/AJAX script will receive this JSON response and insert the Markdown syntax for the image into the PageDown editor.
The PHP function will need to ensure that the URL that it is trying to save/download is a valid image file and not some malicious file! Also not simply just some file of the wrong filetype like a non-image file unless we are allowing the file type.
It will be part of a module installed on many dinosaur servers so it needs to work on as many servers as possible too!
From the web
From your computer
I would be greatful of any help, tips, code snippets or anything to help with this. At this stage I really just need to build a nie PHP function that will upload images from a remote URL and also ensure that the URL passed in is a real image file or even better that it is in the allowed file types array!
A couple years ago I had started this but have now lost it and I am starting over and don't remeber much about how I went about doing it then.
The easiest way to download a file from a remote server would be to use copy (http://php.net/manual/en/function.copy.php):
copy('http://someurl.com/image.png', '/var/www/uploads/image.png');
As this function returns a bool, it is easy to determine whether the operation was successful and create a JSON response.
To verify that the file is an actual image, there is unfortunately no way that is 100% sure. It is probably enough to check the mimetype though. You can use finfo for that (http://php.net/manual/en/function.finfo-file.php):
$finfo = finfo_open(FILEINFO_MIME_TYPE);
echo finfo_file($finfo, $filename);
finfo_close($finfo);
For a gif, this would return image/gif for example. You will have to hardcode a list of all mimetypes you want to allow.