I am trying to send a bunch of images using FormData but of course, I cannot send FileList and I was unsuccessful in figuring out a way to send these files. I have already tried to find answers on my own but most of them suggest appending each file.
for (let i = 0 ; i < images.length ; i ) {
formData.append("images[]", images[i]);
}
But it ends up with only the last file inside formData, for some reason previous files are being replaced by the next one in line.
I have also tried to convert FileList to an array, which works but I don't know how I could separate these files, right now every file is inside one key as a string.
0: "[{\"lastModified\":1606255989000,\"lastModifiedDate\":\"undefined\",\"name\":\"logo.png\",\"size\":54438,\"type\":\"image/png\"},{\"lastModified\":1606255979000,\"lastModifiedDate\":\"undefined\",\"name\":\"logo1.png\",\"size\":58023,\"type\":\"image/png\"},{\"lastModified\":1606252752000,\"lastModifiedDate\":\"undefined\",\"name\":\"logo2.png\",\"size\":28147,\"type\":\"image/png\"},{\"lastModified\":1606255121000,\"lastModifiedDate\":\"undefined\",\"name\":\"logo3.png\",\"size\":18260,\"type\":\"image/png\"}]"
I could just convert it to string and cut it to their own keys using }
as and end of each entry. I don't want to do this, even with my little experience I know it's not a good way to go about it.
As of this moment, my javascript code looks like this.
File.prototype.toObject = function () {
return Object({
lastModified: parseInt(this.lastModified),
lastModifiedDate: String(this.lastModifiedDate),
name: String(this.name),
size: parseInt(this.size),
type: String(this.type)
})
}
FileList.prototype.toArray = function () {
return Array.from(this).map(function (file) {
return file.toObject()
})
}
let files = document.getElementById('files').files
let filesArray = files.toArray();
let formData = new FormData();
formData.append('images[]', JSON.stringify(filesArray));
I then send this data like this
fetch('<?=env('app.baseURL')?>/admin/gallery', {
method: 'POST',
processData: false,
headers: {
'X-Requested-With': 'XMLHttpRequest'
},
body: formData,
data: formData,
}).then(function (response) {...rest of the code...})
After sending this data, which is received without any problems I want to save these files, but I cannot without first separating them. I am using PHP for the back-end.
I don't have much experience with javascript so I might be missing something obvious, any help is appreciated.
CodePudding user response:
In your for loop you could use dynamic name for your formData appends. For example:
formData.append(`image-${i}`, images[i])
Or in case you want to push your images to a single key value pair in your formData, like in your example, you should use the getAll() method to retrieve your images.
formData.getAll('images[]')
CodePudding user response:
Here is the PHP code to go through the array containing the images :
<?php
if(isset($_FILES) && isset($_FILES['images'])){
$countfiles = count($_FILES['images']['name']);
for($i=0;$i<$countfiles;$i ){
$filename = $_FILES['images']['name'][$i];
$sql = "INSERT INTO myimages (filename) VALUES ('".$filename."')";
$db->query($sql);
move_uploaded_file($_FILES['images']['tmp_name'][$i],'upload/'.$filename);
}
}
?>