call click count php function using ajax and onclick jquery

Question

i'm using this function for click count of downloads in wordpress.
Function.php

function setdownViews($postID) {
$dcount_key = 'post_download_count';
$dcount = get_post_meta($postID, $dcount_key, true);
if($dcount==''){
    $dcount = 0;
    delete_post_meta($postID, $dcount_key);
    add_post_meta($postID, $dcount_key, '0');
}else{
    $dcount++;
    update_post_meta($postID, $dcount_key, $dcount);
}
}

and this jequery code to call this function after click on download link.

$(document).on('click', "#click-count", function () {
    <?php setdownViews(get_the_ID());?>
});

but not working and meta value of post_download_count not updating. i know i should use ajax and jquery to call this function but don't know how.
best regards.

I'm not getting any error but noting happen also and function not work. — Khosravi.em
– Khosravi.em, Commented Jan 22, 2015 at 6:55

HoangND · Accepted Answer · 2015-01-22 07:29:18Z

0

You can't call php function in javascript like that. What php does is generate html (include your js), then js will be executed in browser.

You must move your code for increasing downloads number (code inside setdownViews function) to a separate page. When you open that page in the browser, if the downloads number is increased, then it's working. After that, use js (jquery in your case) to call that page.

If the new page name set-downloads-view.php, if could call something like set-downloads-view.php?id=1. Then get the id in php by $_GET['id']

Here is the code:

set-downloads-view.php:

require( dirname( __FILE__ ) . '/wp-blog-header.php' );
$postID = $_GET['id'];
$dcount_key = 'post_download_count';
$dcount = get_post_meta($postID, $dcount_key, true);
if($dcount==''){
    $dcount = 0;
    delete_post_meta($postID, $dcount_key);
    add_post_meta($postID, $dcount_key, '0');
}else{
    $dcount++;
    update_post_meta($postID, $dcount_key, $dcount);
}

javascript

$(document).on('click', "#click-count", function () {
    $.ajax ({
        url: "set-downloads-view.php?id=<?php get_the_ID();?>"),
        data: null,
        success: function( result ) {
            // it\'s done, show something to the user
        }
    });
});

I'm sorry in advance that I haven't used wordpress in very long time, but you get the idea. It's not the best solution, but it should work.

edited Jan 22, 2015 at 7:29

answered Jan 22, 2015 at 7:20

HoangND

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8 Comments

Khosravi.em Over a year ago

thank you HoangND. i'm not getting error,but value of meta key not updating

HoangND Over a year ago

if you open this page in browser, will it increase the meta: set-downloads-view.php?id=your-id

Khosravi.em Over a year ago

i open the url in browser:localhost/2/wp-content/themes/mocup/… . and this the error : ( ! ) Warning: require(E:\wamp\www\2\wp-content\themes\mocup/wp-blog-header.php): failed to open stream: No such file or directory in E:\wamp\www\2\wp-content\themes\mocup\set-downloads-view.php on line 2

HoangND Over a year ago

For the the code I gave you, you need to put that file in the same folder with index.php

Khosravi.em Over a year ago

you mean in theme directory or root of wordpress files?

|

Rogin Thomas · Accepted Answer · 2015-01-22 07:27:13Z

0

we can't call php function like this, try to use ajax. try this Eg:
index.php page

$(document).ready(function(){
$(document).on('click', "#click-count", function () {
    var val = "Hi";
    $.ajax ({
        url: "ajax.php",
        data: { val : val },
        success: function( result ) {
            alert("Hi, testing");
            alert( result );
        }
    });
});
});

add new file name as ajax.php page and put the below code in it

<?php
echo ( $_GET['val'] );?>

edited Jan 22, 2015 at 7:27

answered Jan 22, 2015 at 7:09

Rogin Thomas

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1 Comment

Rogin Thomas Over a year ago

I edited the code. add a new file name ajax.php in same folder. If you get the alert Hi. then this will work.

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