creation of the repo fbpatch

js/dates.js

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+
+/*
+* overriding the datepicker function to intercept the arguments
+* -> https://stackoverflow.com/questions/26667720/how-to-get-the-selected-date-from-jquery-datepicker
+* then create an false input that will mask the real one
+* and put the original date format on the false element,
+*   while transforming the real one with the acf format 'Ymd'
+* 
+* another solution would be to find the elements with the datepicker, and add the onSelect here
+*
+*/
+// store the original jQuery UI datepicker function
+const original_datepicker = jQuery.fn.datepicker;
+// override the datepicker function
+jQuery.fn.datepicker = function(options) {
+	/*
+	* first creates the fake input
+	*
+	*/
+	create_fake_date_input(options, this);
+
+
+	/*
+	* then override the options to add action on select date :
+	* -> store the date in acf format in the hidden field value
+	*
+	*/
+	options.onSelect = function(date_text, inst) {
+		const acf_date_format = "yymmdd";
+		const selected_date = jQuery(this).datepicker('getDate');
+		const formated_date = jQuery.datepicker.formatDate(acf_date_format, selected_date);
+
+		const fake_id = 'acf_date_fake_' + inst.id;
+		jQuery('#' + fake_id).val(date_text);
+		jQuery(this).val(formated_date);
+	}
+
+	// call the original datepicker function with the updated option
+	return original_datepicker.call(this, options);
+};
+
+
+
+
+/*
+* creates the false element
+* place it above the real one to hide it
+*
+*/
+async function create_fake_date_input(options, element) {
+	const fake_id = 'acf_date_fake_' + element.attr('id');
+	if (jQuery('#' + fake_id).length !== 0) {
+		return;
+	}
+
+
+	const fake_name = 'acf_date_fake_for_' + element.attr('name');
+	const original_date_string = await get_acf_date_from_rest(element);
+	const fake_value = original_date_string;
+
+
+	/*
+	* we position the hidden element right in top of the real datepicker one
+	* it might nor work in some situation, but so far it's good
+	* then we remove pointer events, so that clicking on it actually clicks on the real input
+	*
+	*/
+	let fake_style = `
+		position: absolute;
+		top: 0px;
+		left: 0px;
+		pointer-events: none;
+	`;
+	const font_weight = element.css('font-weight');
+	if (font_weight) {
+		fake_style += `font-weight: ${font_weight};`;
+	}
+
+
+	/*
+	* gives the parent element a defined position if needed
+	* then create the false input above the real one
+	*
+	*/
+	if (element.parent().css('position') === 'static') {
+		element.parent().css('position', 'relative');
+	}
+	jQuery(`<input type="text" id="${fake_id}" name="${fake_name}" style="${fake_style}" value="${fake_value}">`).insertAfter(element);
+}
+
+
+
+
+/*
+* use the rest api to get the formated value for the date field
+*
+*/
+async function get_acf_date_from_rest(element) {
+	const pid = getUrlParameter('pid');
+
+	const prefix = "de_fb_";
+	const name = element.attr('name')
+	let acf_name = name.substring(prefix.length);
+
+	let date = element.val(); // default date, not formated, if fetch call fails
+	let fetch_data = null;
+
+	try {
+		const response = await fetch(`/wp-json/wp/v2/posts/${pid}?_fields=acf.${acf_name}&acf_format=standard`);
+		fetch_data = await response.json();
+		tmp_date = fetch_data.acf[acf_name];
+		if (tmp_date) {
+			date = tmp_date;
+		}
+	}
+	catch (error) {
+		console.error('Error fetching ACF field:', error);
+	}
+
+	return date;
+}
+
+
+
+
+/*
+* https://stackoverflow.com/a/21903119/9497573
+*
+*/
+function getUrlParameter(sParam) {
+	let sPageURL = window.location.search.substring(1),
+			sURLVariables = sPageURL.split('&'),
+			sParameterName,
+			i;
+
+	for (i = 0; i < sURLVariables.length; i++) {
+		sParameterName = sURLVariables[i].split('=');
+
+		if (sParameterName[0] === sParam) {
+			return sParameterName[1] === undefined ? true : decodeURIComponent(sParameterName[1]);
+		}
+	}
+	return false;
+};
+