adding Advanced Custom Field to javascript - javascript

I have created an ACF option in the admin so a user can add cookie notice text via the admin...The javascript script I'm using creates the message within the javascript so I'm wanting to echo the ACF field within the javascript.
At the top of my cookie.js file I have: "<?php $cooke_msg = the_field('cookie_notice', 'option'); ?>"; and I'm echoing it within a var like so: var msg = "<?php echo $cookie_msg; ?>"; so the top of my file looks like this:
"<?php $cooke_msg = the_field('cookie_notice', 'option'); ?>";
(function(){
//Change these values
var msg = "<?php echo $cookie_msg; ?>";
var closeBtnMsg = "OK";
var privacyBtnMsg = "Privacy Policy";
var privacyLink = "https://www.google.com";
//check cookies
if(document.cookie){
var cookieString = document.cookie;
var cookieList = cookieString.split(";");
// if cookie named OKCookie is found, return
for(x = 0; x < cookieList.length; x++){
if (cookieList[x].indexOf("OKCookie") != -1){return};
}
}
What I'm getting when I view the site is: <?php echo $cookie_msg; ?> and not the actual message from ACF...is there a way of actually doing this?

Wordpress giving nice function to pass PHP variable data to js file.
Put this code in your theme functions.php page.
function mytheme_load_scripts() {
wp_enqueue_script('mytheme-script', get_template_directory_uri() . '/js/mytheme-script.js');
wp_localize_script('mytheme-script', 'mytheme_script_vars', array(
'alert' => get_field("cookie_notice",$post_id)
)
);
}
add_action('wp_enqueue_scripts', 'mytheme_load_scripts');
And Create one js folder in your theme root directory. Inside that directory create the js file named mytheme-script.js file, & put the below code over there.
jQuery(document).ready(function($) {
alert( mytheme_script_vars.alert );
});
Now visit any page of your site. Surely you will get an alert with the your desire field value. Make sure you will assign proper value to $post_id. I think this will help you. Codex reference link for more details: WP Localize Script Function

Related

DNI show div based on landing page, continue showing div entire session

I have about 60 landing pages that use different phone numbers on them. I am using a combination of WordPress and Advanced Custom Fields to place the phone numbers on their respective pages.
I am being asked to show a <div> based on the landing page URL that will not only show the phone number assigned to that page, but, keep showing the <div> (and phone number) regardless of what page the user navigates to on the website.
I have found little to no support on how to make the <div> remain visible throughout the entire session until the user closes the window.
I am thinking that this will somehow revolve around a cookie and Dynamic Number Insertion but I have no real progress to speak of. Should this be done using PHP or JS? Does a plugin exist that would allow for this on WordPress? I'm open to all suggestions.
Please try this code. Like #John C mentioned, WP Engine doesn't recommend Cookie nor PHP Session for the sake of performance and security. This is pure JavaScript code, and I think this will solve your problem.
Code in your Post/Page template file:
<div id="phone-number"></div>
<?php if( get_field('phone_number') ): ?>
<script type="text/javascript">
let phone_number = "<?php the_field('phone_number'); ?>";
</script>
<?php endif; ?>
Code in your theme JavaScript file:
<script type="text/javascript">
// in the case of the div data is persistent on the same site
// let storage = localStorage;
// in the case of the div data is persistent in the same tab, but not in new tab
let storage = sessionStorage;
let key = "phone_number"; // storage key
var global_phone_number = storage.getItem(key);
// check if storage data is set before
if (null === global_phone_number) {
// if not set the data on page into storage
global_phone_number = phone_number ? phone_number : '';
storage.setItem(key, global_phone_number);
}
document.getElementById('phone-number').innerHTML = global_phone_number;
</script>
You should use PHP and capture the session.
(untested code warning)
add_action('wp_footer', 'dynamic_phone_div');
function dynamic_phone_div() {
session_start;
if(isset($_SESSION['phone_div']) ? $phone_div = $_SESSION['phone_div'] :
$phone_div = '';
if($phone_div != '') {
echo '<div class="that_div_thing">';
echo $phone_div;
echo '</div>';
} else {
$_SESSION['phone_div'] = 123456789;
echo '<div class="that_div_thing">';
echo '123456789';
echo '</div>';
}
}
This is only raw logic. I am not sure where your div is (header/footer/page) - depending on where it is you should either use a hook (header/footer) or code it into a template (page/post).
The session will be destroyed after the user closes the tab/window.
I would probably do this with client side session storage. Providing all pages open in the same tab, the value will remain for the session, then be removed.
PHP code (in your functions.php file?) would be something like this:
function phone_script() {
$params = array(
'phone_number' => null, // Insert logic for current number. Can stay null if this is running on a non-landing page
'is_landing_page' => false // Change to true/false based on is current page a landing one or not
);
$params = json_encode( $params );
echo <<< EOT
<script>
let settings = $params;
document.addEventListener("DOMContentLoaded", function() {
if( settings.is_landing_page ) {
window.sessionStorage.setItem( 'phone-number', settings.phone_number );
} else {
settings.phone_number = window.sessionStorage.getItem( 'phone-number' );
}
if( settings.phone_number ) {
let div = document.createElement('div');
div.classList.add('phone-div');
// or add inline style
// div.style.cssText = 'position:fixed'; //etc
// Some logic here to actually add the number and any other content to the div
div.innerHTML = `The Phone number is: ${settings.phone_number}`;
document.body.appendChild(div);
}
});
</script>
EOT;
}
add_action( 'wp_footer', 'phone_script');
Note that the EOT; line MUST have no leading or trailing spaces.
The above is untested.

Access Wordpress PHP Variables within Plugin JS

edit: I'm now wondering how I can access post ID from within plugin (outside of loop). If I try to get the post id, it returns 0.
How does one access a specific page's PHP variables within a plugin JS file?
I originally had the JS in the page template file but have moved it to a plugin. Now I am unsure how to access that page's PHP variables. Maybe move the PHP logic to a plugin function?
content-course.php (JS)
<?php
$user_id = get_current_user_id();
$course_id = $post->ID;
$vimeo_progress = 0;
$vimeo_seconds = 0;
if ( is_user_logged_in() ) {
// Run WP query to retrieve user progress
$row = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $table_name WHERE user_id = %d AND course_id = %d;", $user_id, $course_id) );
if ($row) {
$vimeo_seconds = $row->seconds_played;
$vimeo_progress = $row->progress_percent;
}
}
?>
<script>
jQuery(document).ready(function($) {
var progress = <?php echo $vimeo_progress; ?>;
var seconds = <?php echo $vimeo_seconds; ?>;
var userProgress = <?php echo $vimeo_seconds; ?>; //example user data retrieved
var lastUpdateProgress = <?php echo $vimeo_progress; ?>;
var videoUrl;
var courseID = <?php echo $course_id; ?>;
</script>
How would the JS script be able to access the PHP variables if moved to the plugin? Do I need to move the PHP above the script to a plugin function.. because then I am not sure how it would pass the data to the JS.
Wordpress have a classified function for the job
wp_localize_script()
Take a look. It's very easy to do.
http://codex.wordpress.org/Function_Reference/wp_localize_script

Struggling to create a php array to fetch photos from directory that can be used as an array in JavaScript

Basically I am trying to create a photo slideshow that will display specific photos depending on the userid. These photos will be stored in the directory of my web server space. Currently I have a html (not changed into php) file with basic html layout, css style sheet and an external js file that has my code that makes the photos fade in and out. I have added php at the bottom of my html. This is what I have:
$user_id = $_GET['userid'];
print "<h1> Hi, $user_id </h1>";
function returnimages($dirname = "Photos/1") { //will replace 1 with userid once something starts working
$pattern="(\.jpg$)|(\.png$)|(\.jpeg$)|(\.gif$)"; //valid image extensions
$files = array();
$curimage=0;
if($handle = opendir($dirname)) {
while(false !== ($file = readdir($handle))){
if(eregi($pattern, $file)){ //if this file is a valid image
//Output it as a JavaScript array element
echo 'galleryarray['.$curimage.']="'.$file .'";';
$curimage++;
}
}
closedir($handle);
}
return($files);
}
echo 'var galleryarray=new Array();'; //Define array in JavaScript
returnimages() //Output the array elements containing the image file names
?>
and in my javscript, the code I had before for the array of photos:
// List of images for user one
var userphoto = new Array();
userphoto[0] = "Photos/1/1.jpg";
userphoto[1] = "Photos/1/2.jpg";
userphoto[2] = "Photos/1/1.jpg";
userphoto[3] = "Photos/1/1.jpg";
userphoto[4] = "Photos/1/1.jpg";
which I have now commented out and replaced it with this:
var userphoto = <? echo json_encode($galleryarray); ?>;
I am hoping to be able to change the src of photodisplay with the new array:
photodisplay[x].attr("src", userphoto[x]);
Sorry if my problem is not clear at all. I am very confused myself. :( hopefully someone can help!
$user_id = (int) $_GET['userid'];
print "<h1> Hi, $user_id </h1>";
function returnimages($dirname = "Photos/1") {
$dirname = str_replace('..', '.', $dirname); //only remove this if you know why it's here
$pattern = "*{.jpg,.png,.jpeg,.gif}"; //valid image extensions
return glob($dirname . DIRECTORY_SEPARATOR . $pattern, GLOB_BRACE);
}
echo "var galleryarray = ".json_encode(returnimages()).";\n";
?>
Also, you should use <?= json_encode($ret) ?> because the PHP short tag (<?) is deprecated, but <?= is not, and is the equivalent of <?php echo.

from mysql to javascript variable

Looking for a simple solution here, I have looked around but nothing seems to give me a simple solution. I want to get data FROM my mysql database and then into my javascript variables.
These two var items in my .js file named test.js and this file is called into my .html file.
var tag_name = 'example';
var client_id = '123456789';
In a .php file called call.php I use this method (PDO) to get the required data from MySQL:
$stmt = $db->query('SELECT * FROM data WHERE id=1');
while($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
$tag_name = $row['tag_name'];
$client_id = $row['client_id'];
}
I want to try and achieve something along the lines of this in the .js file test.js - this obviously wont work but hopefully sheds some light on what I am trying to achieve:
var tag_name = '<?php echo $tag_name ?>';
var client_id = '<?php echo $client_id ?>';
Can I do this using an Ajax method? In my research I read that I need to use JSON? If the question has been asked before, please direct me to a post that is not just someone dumping 50+ lines of code.
Here you go:
The javascript part:
$.ajax({
url: 'call.php',
dataType: 'json'
}).done(
function(data){
var tag_name = data[0];
var client_id = data[1];
}
);
The call.php file:
$stmt = $db->query('SELECT * FROM data WHERE id=1');
while($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
$tag_name = $row['tag_name'];
$client_id = $row['client_id'];
}
echo json_encode(array($tag_name,$client_id));
create a php script that will generate your js and instead of linking your script tag to the .js file link it to the php script that generates the js
PHP
<?php
//mysql stuff up here
header('Content-Type: text/javascript');
?>
//some js here
var tag_name = '<?php echo $tag_name ?>';
var client_id = '<?php echo $client_id ?>';
// some more js here
HTML
<script type="text/javascript" src="http://example.com/test.js.php"></script>
You can echo out your php variables as JSON and then consume them, but if you're just trying to set your js variables with data from php you might want to simply pass the variables in through a function call. Adding something like this to your php script to activate the Javascript you're trying to use for the page.
<script type="text/javascript">
setVariables('<?php echo $tag_name ?>', '<?php echo $client_id ?>');
</script>
and then creating that function in your .js file to utilize those values and do what you need.
function setVariables(name, id){
var tag_name = name
var client_id = id
//Operations that need these values.
}

php array to external page using jquery

I have a php page to creates a multi-dimentional array called $results.
I would like to:
catch submit of a form button
override default behavior of the submit using jQuery
copy and process $results on separate php using $.post
I have this which is not currently working and am not sure why?:
<form id='download_to_excel' method="post">
<input type="image" name="submit" value="submit" id='xls_download_button' src='images/common/buttons/download.png'>
</form>
<?php
$json_results = json_encode($results);
?>
<script type='text/javascript'>
$(document).ready(function(){
alert($json_results);
$("#xls_download_button").click(function(e){
alert('clicked');
e.preventDefault();
download_xls();
});
function download_xls(){
$.post('./libs/common/export_data_to_excel.php', {json_data : json_results};
}
});
</script>
When selecting the xls_download_button, the alert() never fires nor does any data get passed to export_data_to_excel.php
The export_data_to_excel.php file has the following:
<?php
$results = json_decode($_POST['json_data']);
#include the export-xls.class.php file
require_once('export-xls.class.php');
$date = date('Y-m-d');
$filename = "contacts_search_$date.xls"; // The file name you want any resulting file to be called.
#create an instance of the class
$xls = new ExportXLS($filename, $results);
#lets set some headers for top of the spreadsheet
$header = "Searched Contact Results"; // single first col text
$xls->addHeader($header);
#add blank line
$header = null;
$xls->addHeader($header);
$header = null;
$row = null;
foreach($results as $outer){
// header row
foreach($outer as $key => $value){
$header[] = $key;
}
// Data Rows
foreach($outer as $key => $value){
$row[] = $value;
}
$xls->addRow($header);//add header to xls body
$header = null;
$xls->addRow($row); //add data to xls body
$row = null;
}
# You can return the xls as a variable to use with;
# $sheet = $xls->returnSheet();
#
# OR
#
# You can send the sheet directly to the browser as a file
#
$xls->sendFile();
?>
I do know that the $json_results does display proper JSON encoded values when echoed. But from there are not sure why the rest of the javascript does not run; the alerts never fire nor does the JSON data get passed?
Can you see why this isn't working?
Your PHP-supplied json is not stored as a javascript variable in your js.
$(document).ready(function(){
var json_results = <?php echo $json_results; ?>;
...
This code shouldn't run:
function download_xls(){
$.post('./libs/common/export_data_to_excel.php', {json_data : json_results};
}
It is invalid (the ; doesn't belong there). Try this code:
function download_xls(){
$.post('./libs/common/export_data_to_excel.php', {json_data : json_results});
}
Right now you are just setting a php variable called $results you need to transfear it to you javascript.
<script type="text/javascript">
// set javascript variable from php
var $results = "<?php echo json_decode($json_data); ?>";
</script>
For sure you have an error in your javascript code (you were not closing the parenthesis after $.post), should be:
$(document).ready(function() {
alert($json_results);
$("#xls_download_button").click(function(e) {
alert('clicked');
e.preventDefault();
download_xls();
});
function download_xls() {
$.post('./libs/common/export_data_to_excel.php', {
json_data: json_results
});
}
});
Then you should assign your JSON to a javascript variable inside document.ready
$(document).ready(function() {
var json_results = <?php echo($json_results);?>;
You can't pass a PHP variable to the JavaScript like that: there live in totally different worlds. Use Ajax to get the JSON data from JS.

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