I have a problem with images in my web app. let say I have a form where there are some text fields, dropdowns, upload ajax control for multiple image upload and button Save.
I know how to upload images and posting a form and saving everything to database but the problem is that I want to achieve the following user experience:
User can upload multiple images and browser after successful upload shows thumbnail (this I know how to do it)...the problem here is that I do not want to save images to db before button save is pressed. Is there any convinient how to save temporary images...I have tried temp table which after button is pressed, copies all images to image table but here is browser refresh problem that looses all the data and images stay in a temp table. Can you use a session for storing temporary images or any other way (I think session is not particulary good idea for such things.)
One easy way to achieve that is to use the HTML5 File API and display a thumbnail once the user selects a file to upload. You don't even need to waste bandwidth as everything happens on the client. Once the user submits the form, then the image will be uploaded to the server.
Another possibility is to use one of the gazillions of available AJAX upload controls such as Uploadify, Valums Ajax Upload, Uploadify, the jQuery form plugin, ... which will allow you to upload the file to the server using an AJAX request so that you can resize it there and return the resized image to the client that you could display the thumbnail on the client.
Related
I work on a Saas project where users can submit/upload items.
I want to create a similar work-flow like Youtube.
This means that the user uploads image file, ZIP files etc. which then show in the upload progress block, during this time I want the user to be able to edit the other informations like tags, text description, price for item etc.
At Youtube a user can upload a video file and edit all other things during the upload, he can even leave the page and the upload continues in the background.
But in my project whenever a user uploads a file these fields can not be edited properly or get removed again after the upload is successful.
Please point me to a solution how this works/how Youtube et al approached this.
Thanks.
I think you should do this with javascript features
Like sending a file with ajax in laravel and php.
By doing this, you can still access the elements inside your web page.
Below image depicts a screen in my sample application which has
file upload functionality.
Below are the steps I followed to upload and save files in Database.
In this screen once user clicks "Browse" button and selects the file(s) that need to uploaded, an AJAX request will be made to server(MVC application) for each file selected.
For each upload AJAX request, server will save the file data(byte array) in session array variable and sends JSON response(which has file name and file size) to Browser.
Browser will display JSON response.
Once user clicks the "Submit" button , the file information which is already there in session variable will be stored in Database.
Following above approach I could implement the desired upload functionality.
Question: I would like to know whether this approach is correct, am I making
any mistake?
I'm running a Vanilla Forum with a FileUpload plugin, allowing users to upload images and insert the corresponding code directly into the body of their post. These images work with FancyBox when clicked, linking together nicely within the page. However, should a user use a third-party image hosting site (i.e. Imagevenue, Imageshack, Postimage.org) and copy and paste the resulting image code, it deactivates the FancyBox feature associated with all images previously on the page, so when you click on an image uploaded via FileUpload it opens in a new window now instead of in a FancyBox.
My question is one of two things:
a) Is it possible to fix this formatting issue so that if a user does choose to use a third-party image hosting service then it will not affect the fancybox of my previous images.
or
b) Is it possible to block this type of image code from being inputted in the body of a post to prevent this from ever happening.
Thank you and please reply if you would like more information!
Most likely the generated code from those third-party hosting sites has not an image extension (JPG, PNG, GIF) so fancybox doesn't know what type of content needs to handle.
If you are binding fancybox like
$(".fancybox").fancybox();
... you could force the type of content to image like
$(".fancybox").fancybox({
type : "image"
});
I don't really see how pasting the code of a new image will disable the code for existing ones if you want to elaborate.
How to upload image on page using ajax in codeigniter? On form image needs to be uploaded then
user should fill further information. I try ajax but unable to figure out simplest way
http://net.tutsplus.com/tutorials/javascript-ajax/how-to-upload-files-with-codeigniter-and-ajax/
This is how I did it for the first time, easier than it might look and should work without too much problems.
i have a mvc application to enter user profile to the system
i need to upload a image of user as well
but problem i face here is when i upload the image (calling functions in upload controller) all the data entered in other textboxes are gone.
what i need is when i click upload i want the image file to be saved(in a temp folder) and the remaining info in the textbox to remain intact. i have separate button to save the info to datbase which will save all data from TB and also the image(after converting it to byte array) to the databse
You can not upload file with pure AJAX. You need to create some iframe solution for that.