Is it possible for an image to be uploaded through the Shadowbox upload field and then submit it once the

Question

Is it possible for an image to be uploaded through the Shadowbox upload field and then submit it once the

On the main page, there is a form that contains a button to trigger a Shadowbox child form.

The Shadowbox child form has its own form, and when submitted, it fills in hidden data in the parent form. Dealing with non-image data is straightforward.

But how can one manage image uploads? Specifically, how can I pass an image from the Shadowbox form to the parent form, and then upload it after the parent form is submitted?

I selected these tags based on the languages I am utilizing for this project.

c#javascript

Answer 1

Answer №1

I discovered a great solution for this issue by referring to this helpful answer, after doing some extensive research.

The gist of it involves using an onchange event on the file input field to store the base64 encoded version of the selected image in a variable on the parent page.

Here is the code snippet for the shadowbox page:

// Javascript
$('[type=file]').change(function ()
{
    if (input.files && input.files[0])
    {
        var reader = new FileReader();

        reader.onload = function (e)
        {
            // The encoded image is saved in the parent variable here.
            self.parent.hiddenElement.val(e.target.result);
        }

        reader.readAsDataURL(input.files[0]);
    }
}

And here's the code snippet for the parent page:

// HTML
<input type='hidden' name='encoded_image' />

// Javascript
var hiddenElement = $('[name=encoded_image]');

Now, you can easily save this base64 encoded image to blob storage on your server upon submitting the form on the parent page.

Answer 2

I discovered a great solution for this issue by referring to this helpful answer, after doing some extensive research.

The gist of it involves using an onchange event on the file input field to store the base64 encoded version of the selected image in a variable on the parent page.

Here is the code snippet for the shadowbox page:

// Javascript
$('[type=file]').change(function ()
{
    if (input.files && input.files[0])
    {
        var reader = new FileReader();

        reader.onload = function (e)
        {
            // The encoded image is saved in the parent variable here.
            self.parent.hiddenElement.val(e.target.result);
        }

        reader.readAsDataURL(input.files[0]);
    }
}

And here's the code snippet for the parent page:

// HTML
<input type='hidden' name='encoded_image' />

// Javascript
var hiddenElement = $('[name=encoded_image]');

Now, you can easily save this base64 encoded image to blob storage on your server upon submitting the form on the parent page.

Is it possible for an image to be uploaded through the Shadowbox upload field and then submit it once the

Answer №1

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