Fix JS and JS-based image upload

This commit is contained in:
Christoph Haas 2025-05-02 00:38:42 +02:00
parent 36984ff1d4
commit fa8a7fc77a
6 changed files with 95 additions and 51 deletions

View file

@ -1,21 +1,23 @@
// Configure your import map in config/importmap.rb. Read more: https://github.com/rails/importmap-rails
import "@hotwired/turbo-rails"
import "controllers"
// import "@hotwired/turbo-rails"
// import "controllers"
// Initialize the upload form.
function upload_form_init() {
// Disable the submit button if Javascript is supported.
// Upload will start right after selecting images.
// $("#file-submit").hide();
document.getElementById("file-submit").style.display = "none";
const fileSubmit = document.getElementById("file-submit");
if (fileSubmit)
{
fileSubmit.style.display = "none";
}
// Install event handler to notice when files were selected.
// $("#file").on("change", upload_form_files_selected);
document.getElementById("file").addEventListener("change", upload_form_files_selected);
document.getElementById("file")?.addEventListener("change", upload_form_files_selected);
}
function upload_form_files_selected() {
no_files = this.files.length;
var no_files = this.files.length;
if (no_files > 0) {
document.getElementById("file-label").innerHTML = `${no_files} files selected - uploading…`;
document.getElementById("file-select-button").disabled = true;
@ -28,7 +30,7 @@ function upload_form_files_selected() {
}
// Handle Ctrl-V to paste an image directly
export function upload_paste_handler(event) {
function upload_paste_handler(event, uploadUrl) {
console.log("paste!");
var items = (event.clipboardData || event.originalEvent.clipboardData).items;
@ -48,45 +50,48 @@ export function upload_paste_handler(event) {
console.log(item.type);
var file = item.getAsFile();
console.log(file);
upload_file_with_ajax(file);
upload_file_with_ajax(file, uploadUrl);
}
}
function upload_file_with_ajax(file) {
function upload_file_with_ajax(file, uploadUrl) {
if (file == null) {
console.log("File was null. Strange.");
display_error("Maybe the image was too large.");
return;
}
var formData = new FormData();
formData.append("file", file);
console.log(formData);
fetch(ajax_upload_url, {
fetch(uploadUrl, {
method: "POST",
body: formData,
headers: {
"X-CSRF-Token": document.querySelector('meta[name="csrf-token"]').content,
// 'Content-Type' is omitted to let the browser set it automatically
// with the proper boundary for FormData
},
})
.then(async (response) => {
if (!response.ok) {
const errorData = await response.json();
console.log(`AJAX file upload returned error: ${response.statusText}`);
display_error(errorData);
throw new Error("Upload failed");
}
return response.json();
})
.then((data) => {
console.log("AJAX file upload was ok");
window.location.replace(after_upload_url);
})
.catch((error) => {
if (error.message !== "Upload failed") {
console.log(`AJAX file upload error: ${error}`);
}
});
.then(async (response) => {
if (!response.ok) {
const errorData = await response.json();
console.log(`AJAX file upload returned error: ${response.statusText}`);
display_error(errorData);
throw new Error("Upload failed");
}
return response.json();
})
.then((data) => {
console.log("AJAX file upload was ok");
window.location.replace(after_upload_url);
})
.catch((error) => {
if (error.message !== "Upload failed") {
console.log(`AJAX file upload error: ${error}`);
}
});
// $.ajax(ajax_upload_url, {
// type: "POST",
@ -107,7 +112,8 @@ function upload_file_with_ajax(file) {
// });
}
function display_error(msg) {
function display_error(msg) { console.log("foo");
// $("#messages").html(
// '<div class="callout alert alert-callout-subtle radius">Sorry, pasting did not work. ' + msg + "</div>"
// );
@ -117,3 +123,21 @@ function display_error(msg) {
</div>
`;
}
document.addEventListener("DOMContentLoaded", () => {
console.log("DOM loaded");
// Handle uploads on specific views/pages. The DIV with ID
// #data-js-upload-form carries data attributes that tell us where
// uploads will be sent from Javascript.
let element = document.getElementById("data-js-upload-form");
if (element) {
console.log("upload_form_init");
// console.log(element.dataset);
// console.log(element.dataset.uploadUrl);
upload_form_init(element.dataset.uploadUrl);
// document.onpaste = upload_paste_handler(element.dataset.uploadUrl);
document.onpaste = function(event) { upload_paste_handler(event, element.dataset.uploadUrl); }
}
});