Tuesday, 21 May 2013

Delete Old Post Revision In WordPress

Post Revisions are a feature introduced in WordPress 2.6. Whenever you or WordPress saves or drafts a post or a page, a revision of that version is automatically stored in your database. Each revision will slowly increase the size of your database. WordPress.com will store the last 25 revisions for each post.

For example, if you have 1 post and it has 10 revisions you could be storing up to 10 copies of older or unused data in your database, which will increase the size of your database for sure. You can learn more about Post Revisions by clicking here.

Now we know that these useless post revisions are just wasting our space. You can't delete these revisions manually, but the oldest revision is automatically deleted if there are more than 25 revisions.

Delete Post Revisions:

Delete Post Revisions is a great plugin to delete all useless post revisions off your database. It is compatible with the latest version of WordPress (3.x). It's coded by me, so don't forget to rate this plugin.

Here is the original description of Delete Post Revisions:

We created a tool which helps you to remove useless post revisions from your database.

Installing Delete Post Revisions:

  • Click here and download this plugin. Visit your WordPress' plugin page and install this plugin.
  • You can also install this plugin from your WP's plugin directory.
  • After installing, just click on active.

After installing, a new option will appear under the Settings tab. Not here is how to delete old post revisions:

  • Visit Settings > Delete Post Revisions
  • In the bottom, click on "Start" button and it's all done.

WordPress’ database queries don't retrieve revisions, so the number of revisions has no effect on the queries, but it's a great way of keeping your database clean. The only time the revisions are retrieved is on the edit page of the individual post.

Wednesday, 15 May 2013

AJAXify Your WordPress Comments

In previous posts, I shared several AJAX tutorial, which were awesome. In this tutorial, I'll show how to AJAXify your default WP comment  system. It's a great must use tutorial.

AJAX comment enables you and your readers to post and reply to comment instantly without refreshing the page. It saves a lot of time and users are more likely to comment. You can check a live demo by clicking here.

I prefer to use Disqus comment box on my sites, but unfortunately Disqus doesn't works with BuddyPress. I'm not the only person who is facing this problem. I was so disappointment when I had to choose default WP comment box, since it reloads on every activity. So, I found a great plugin to AJAXify my default WP comment box.

To AJAXify your WordPress comments, there is a great plugin call wp-comment-master. Below is official description of this plugin:

an elegant and must-have comment plugin to better satisfy your visitors, it has two main features: AJAX comment posting and comment paginitaion.


Installing wp-comment-master:

  • Click here and download this plugin. Visit your WordPress' plugin page and install this plugin.
  • You can also install this plugin from your WP's plugin directory.
  • After installing, just click on active and it's done...

Don't forget to leave a comment...

Sunday, 12 May 2013

Easiest Way To Remove WordPress Logo From Admin Bar


Today, I'm going to share the easiest way to remove this annoying WordPress logo/links from your admin bar without using any plugin.

Last month, I tried to remove this whole WP logo menu from my site by editing those hard php files, and I was successful in it. But it was a temporary success, because soon I saw an error message on my dashboard.

Now, let me share two simple ways to remove that annoying thing from your admin bar.

Easiest Way: By Using CSS:

It's funny, but you can also remove that logo menu by adding display:none; CSS property. I know some of you guys are screwed up over this fact. Let me show you how. I'm using this CSS hack on this WP site.

  • Visit your File Manager or FTP from your hosting provides. Mine is from GoDaddy, which looks something like this:


  • Now in your file manger, visit webroot/wp-includes/css/admin-bar.min.css
  • In admin-bar.min.css, add following css code:

li#wp-admin-bar-wp-logo.menupop{display:none;}

  • Save/Update your admin-bar.min.css file and that's it.

Important: You may have to clear your browser's cache to see this change or you can use private window to see this simple css hack.

By Using php:

If you're not satisfied with our css hack, then you can also use php snippet to hide this menu list. Credits for this snippet goes to WP-Snippets.

  • Add this code to your functions.php file to remove the WordPress logo on admin bar:

<?php
function annointed_admin_bar_remove() {
        global $wp_admin_bar;

        /* Remove their stuff */
        $wp_admin_bar->remove_menu('wp-logo');
}

add_action('wp_before_admin_bar_render', 'annointed_admin_bar_remove', 0);
?>

That's it...Don't forget to leave a comment.

Saturday, 11 May 2013

Bulk Delete WordPress Users Based On Their Role


Owning a blog with public registration is a huge mess, especially with all those nasty spammers. It's really hard to get rid of all those nasty spammers. In future, I'll share a very effective way to get rid of all future spam users, but first it's important to delete existing spam users. For that we have to delete all public registered accounts.

You can also use this tutorials for any other thing, since it's always not about spammers. Instead of deleting users of a specific role one-by-one, you can bulk delete them. As always, "Bulk Is Better" - Hardeep Asrani (Me)

As I know, there are five different roles in WordPress, which are admins, developers, authors, editors, contributors and subscribers. You can easily delete users of any of these roles easily by running a very simple code.

How To Bulk Delete All Users Based On Their Role:

  • Go to your WP Dashboard > Appearance > Editor
  • Open the functions.php file from the right sidebar.
  • Add the following lines of code (based on user role) to your functions.php file and publish.

Codes For User Roles:

For Admin:

function remove_administrators() {
    global $wpdb;
    $args = array( 'role' => 'Administrator' );
    $administrators = get_users( $args );
    if( !empty($administrators) ) {
        require_once( ABSPATH.'wp-admin/includes/user.php' );
        $i = 0;
        foreach( $administrators as $administrator ) {
            if( wp_delete_user( $administrator->ID ) ) {
                $i++;
            }
        }
        echo $i.' Administrators deleted';
    } else {
        echo 'No Administrators deleted';
    }
}
remove_administrators();

For Developers:

function remove_developers() {
    global $wpdb;
    $args = array( 'role' => 'Developer' );
    $developers = get_users( $args );
    if( !empty($developers) ) {
        require_once( ABSPATH.'wp-admin/includes/user.php' );
        $i = 0;
        foreach( $developers as $developer ) {
            if( wp_delete_user( $developer->ID ) ) {
                $i++;
            }
        }
        echo $i.' Developers deleted';
    } else {
        echo 'No Developers deleted';
    }
}
remove_developers();

For Authors:

function remove_authors() {
    global $wpdb;
    $args = array( 'role' => 'Author' );
    $authors = get_users( $args );
    if( !empty($authors) ) {
        require_once( ABSPATH.'wp-admin/includes/user.php' );
        $i = 0;
        foreach( $authors as $author ) {
            if( wp_delete_user( $author->ID ) ) {
                $i++;
            }
        }
        echo $i.' Authors deleted';
    } else {
        echo 'No Authors deleted';
    }
}
remove_authors();

For Editors:

function remove_editors() {
    global $wpdb;
    $args = array( 'role' => 'Editor' );
    $editors = get_users( $args );
    if( !empty($editors) ) {
        require_once( ABSPATH.'wp-admin/includes/user.php' );
        $i = 0;
        foreach( $editors as $editor ) {
            if( wp_delete_user( $editor->ID ) ) {
                $i++;
            }
        }
        echo $i.' Editors deleted';
    } else {
        echo 'No Editors deleted';
    }
}
remove_editors();

For Contributors:

function remove_contributors() {
    global $wpdb;
    $args = array( 'role' => 'Contributor' );
    $contributors = get_users( $args );
    if( !empty($contributors) ) {
        require_once( ABSPATH.'wp-admin/includes/user.php' );
        $i = 0;
        foreach( $contributors as $contributor ) {
            if( wp_delete_user( $contributor->ID ) ) {
                $i++;
            }
        }
        echo $i.' Contributors deleted';
    } else {
        echo 'No Contributors deleted';
    }
}
remove_contributors();

For Subscribers:

function remove_subscribers() {
    global $wpdb;
    $args = array( 'role' => 'Subscriber' );
    $subscribers = get_users( $args );
    if( !empty($subscribers) ) {
        require_once( ABSPATH.'wp-admin/includes/user.php' );
        $i = 0;
        foreach( $subscribers as $subscriber ) {
            if( wp_delete_user( $subscriber->ID ) ) {
                $i++;
            }
        }
        echo $i.' Subscribers deleted';
    } else {
        echo 'No Subscribers deleted';
    }
}
remove_subscribers();

For None:

There is also a role in WordPress called "none." Here is the code to bulk delete users with "none" rule. I'm not 100% about this code, so please leave a comment if it's working:

function remove_noroleusers() {
    global $wpdb;
    $args = array( 'meta_key' => 'wp_capabilities','meta_value' => 'a:0:{}','meta_compare' => '=') ;
    $noroleusers = get_users( $args );
    if( !empty($noroleusers) ) {
        require_once( ABSPATH.'wp-admin/includes/user.php' );
        $i = 0;
        foreach( $noroleusers as $noroleuser ) {
            if( wp_delete_user( $noroleuser->ID ) ) {
                $i++;
            }
        }
        echo $i.' Users deleted';
    } else {
        echo 'No Users deleted';
    }
}
remove_noroleusers();

Final Step:

Once you have went to your site go back to your functions file and remove the code. Don't forget to leave a comment.

Friday, 10 May 2013

Using jQuery Autocomplete Widget


The Autocomplete widgets provides suggestions while you type into the field. It's a great way to create search, tags or category form on your niche blog. You can also create some cool forms with this UI. In this tutorial, I'll show how to easily use this autocomplete widget.

1. Create A New Document:

It's a beginner's tutorial so, I'll explain in some very easy language, not going to use all those crappy words. Create a new HTML document, below is basic page structure:

<html>

<head>

</head>

<body>

</body>

</html>

2. Adding jQuery Script And CSS:

Now we'll add magical jQuery script and jQuery UI's stylesheet. Just add following code between your <head> ... </head> in your document:

<link rel=stylesheet href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css"></link>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>

Save your template. Let's move to our third step where we're going to add our input form:

3. Adding Our Input Form:

It's time to add our input form in your document. Our input form is surrounded by <div> </div> tag to style our form. Just add following mark-up between our document's <body> ... </body> tag:

<div class="ui-widget">
<label for="tags">Tags: </label>
<input id="tags" />
</div>

Remember, our input element's id is tags. We're pretty much done right here. Now, it's time to add our autocomplete text values.

4. Adding Autocomplete Values:

Finally, it's time to add our autocomplete values. First add following script above </head>:


<script>
$(function() {
var availableTags = [
AUTO COMPLETE VALUES HERE
];
$( "#tags" ).autocomplete({
source: availableTags
});
});
</script>

Now, let's replace red text in above document with some available autocomplete values. We're going to add some values like this:

"Basket Ball",
"Baseball",
"Cricket"

Don't add "comma" in last value. Here is full mark-up of this autocomplete jQuery code:

<script>
$(function() {
var availableTags = [
"Basket Ball",
"Baseball",
"Cricket",
"F1",
"Football",
"Hockey",
"Ice Hockey",
"MMA",
"Moto GP",
"Nascar",
"Racing",
"Wrestling",
"Pro-Wrestling"
];
$( "#tags" ).autocomplete({
source: availableTags
});
});
</script>

That's it. You can also add scrollable results by adding following css:

<style>
.ui-autocomplete {
max-height: 100px;
overflow-y: auto;
/* prevent horizontal scrollbar */
overflow-x: hidden;
}
/* IE 6 doesn't support max-height
* we use height instead, but this forces the menu to always be this tall
*/
* html .ui-autocomplete {
height: 100px;
}
</style>

Full Document Mark-Up:

Below is the full mark-up of our document:

<link rel=stylesheet href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css"></link>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>

<style>
.ui-autocomplete {
max-height: 100px;
overflow-y: auto;
/* prevent horizontal scrollbar */
overflow-x: hidden;
}
/* IE 6 doesn't support max-height
* we use height instead, but this forces the menu to always be this tall
*/
* html .ui-autocomplete {
height: 100px;
}
</style>

<script>
$(function() {
var availableTags = [
"Basket Ball",
"Baseball",
"Cricket",
"F1",
"Football",
"Hockey",
"Ice Hockey",
"MMA",
"Moto GP",
"Nascar",
"Racing",
"Wrestling",
"Pro-Wrestling"
];
$( "#tags" ).autocomplete({
source: availableTags
});
});
</script>


<div class="ui-widget">
<label for="tags">Tags: </label>
<input id="tags" />
</div>

Don't forget to leave a comment!

Add Login Form To WordPress Sidebar


Adding a login form in your site's sidebar will surely attract your readers to login or register. It's less painful than visiting your WP's login page to login.

Mike Jolley created a great ajax-enhanced login plugin for WordPress, which is available to download at this link. This widget adds a useful login widget which you can use to login from in the sidebar of your WordPress.

How To Install:

  • Click here and download this plugin. Visit your WordPress' plugin page and install this plugin.
  • You can also install this plugin from your WP's plugin directory.

Usage:

  • Simply go to Appearance > Widgets and drag "sidebar login" to the sidebar of your choice.

After login it redirects them back to the page they logged in from. You can contribute to this awesome plugin on GitHub at this link. You can also use this widget on your WP's template with the the_widget() function.

As of writing, you can check a live demo of this widget on my wordpress site at this link. Don't forget to leave a comment.

In next few months, I'll focus on WordPress plugins and tricks. Also, #NowPlaying Started from the bottom by Drake.

Wednesday, 8 May 2013

Replace Existing Images In WordPress Media Library


You ever tried to replace an existing image from your WordPress. It sucks and takes a lot of time to delete, rename, replace, and upload your images from your file manager. Let's make it easier than ever.

A guy called "mungobbq" created a great plugin, which gives us an option to replace any uploaded file from the media "edit" view.

You can download this plugin at this link, or by searching "Enable Media Replace" on your blog's plugin directory. Below is a (huge) quote from this plugin's official page:

It's simple to replace a file

  1. Just replace the file. This option requires you to upload a file of the same type as the one you are replacing. The name of the attachment will stay the same no matter what the file you upload is called.
  2. Replace the file, use new file name and update all links. If you check this option, the name and type of the file you are about to upload will replace the old file. All links pointing to the current file will be updated to point to the new file name.
This plugin is very powerful and a must-have for any larger sites built with WordPress.

Display file modification time

There is a shortcode available which picks up the file modification date and displays it in a post or a page. The code is:

[file_modified id=XX format=XXXX]
 
where the "id" is required and the "format" is optional and defaults to your current WordPress settings for date and time format.

So [file_modified id=870] would display the last time the file with ID 870 was updated on your site. To get the ID for a file, check the URL when editing a file in the media library (see screenshot #3)
If you want more control over the format used to display the time, you can use the format option, so [file_modified id=870 format=Y-m-d] would display the file modification date but not the time. The format string uses standard PHP date() formatting tags.

Tuesday, 7 May 2013

Add Numbered Page Navigation To WordPress


If your WP blog has a large number of posts, then adding numbered page navigation is a great way to give your readers an easy navigation to your blog's archives. The default WordPress pagination comes with ‘older posts’ and ‘newer posts’ but those look good if your blog has only few articles.

In this tutorial, I'll tell you how to add numbered page navigation to your WordPress, both manually and automatically. Let's get started with automatic method (by using a plugin).

By Using A Plugin:

I recommend you to use this way, since it's easy and much better. Click here to download or search and install WP-PageNavi to your blog. Activate this plugin and that's it.

Custom Method:

You can also manually add numbered page navigation to your WP, just follow these simple steps:

  • Go to your WP Dashboard > Appearance > Editor
  • Open the functions.php file from the right sidebar.
  • Add the following lines of code to your functions.php file and publish.

function pagination($pages = ”, $range = 4)
{
$showitems = ($range * 2)+1;
global $paged;
if(empty($paged)) $paged = 1;
if($pages == ”)
{
global $wp_query;
$pages = $wp_query->max_num_pages;
if(!$pages)
{
$pages = 1;
}
}
if(1 != $pages)
{
echo “<div class=\”pagination\”><span>Page “.$paged.” of “.$pages.”</span>”;
if($paged > 2 && $paged > $range+1 && $showitems < $pages) echo “<a href=’”.get_pagenum_link(1).”‘>&laquo; First</a>”;
if($paged > 1 && $showitems < $pages) echo “<a href=’”.get_pagenum_link($paged – 1).”‘>&lsaquo; Previous</a>”;
for ($i=1; $i <= $pages; $i++)
{
if (1 != $pages &&( !($i >= $paged+$range+1 || $i <= $paged-$range-1) || $pages <= $showitems ))
{
echo ($paged == $i)? “<span class=\”current\”>”.$i.”</span>”:”<a href=’”.get_pagenum_link($i).”‘ class=\”inactive\”>”.$i.”</a>”;
}
}
if ($paged < $pages && $showitems < $pages) echo “<a href=\”".get_pagenum_link($paged + 1).”\”>Next &rsaquo;</a>”;
if ($paged < $pages-1 && $paged+$range-1 < $pages && $showitems < $pages) echo “<a href=’”.get_pagenum_link($pages).”‘>Last &raquo;</a>”;
echo “</div>\n”;
}
}

  • One-by-one open index.php, archive.php, search.php, and loop.php (only if exist) file from the right sidebar.
  • Find ‘older posts’ or ‘older entries’ and replace those lines with the below code.

<?php if (function_exists(“pagination”)) {
pagination($additional_loop->max_num_pages);
} ?>

That's it! You can also add some CSS to make it look better.

  • On editor, open the style.css file from the right sidebar.
  • Add following CSS add the bottom of style.css file:

.pagination {
clear:both;
padding:20px 0;
position:relative;
font-size:11px;
line-height:13px;
}
.pagination span, .pagination a {
display:block;
float:left;
margin: 2px 2px 2px 0;
padding:6px 9px 5px 9px;
text-decoration:none;
width:auto;
color:#fff;
background: #555;
}
.pagination a:hover{
color:#fff;
background: #3279BB;
}
.pagination .current{
padding:6px 9px 5px 9px;
background: #3279BB;
color:#fff;
}

That's it! Don't forget to leave a comment.

Monday, 6 May 2013

Split WordPress Posts Into Multiple Pages Using Post Pagination

Post Pagination is a great way to split lengthy posts into multiple pages. It's also a great way to improve your blog's loading time. You can check an example of this trick by clicking here. Last year, I posted post pagination for Blogger, which is way too much different from WordPress post pagination.

It's way too much easy to add Post Pagination on WordPress.On most well-coded themes, all you have to do is paste this code: <!––nextpage––> wherever you want the next page to start. You can also use this plugin to add a nextpage button on your post editor.

But if it's not working on your theme, then just add following php snippet on your single.php loop:

<?php wp_link_pages(); ?>

You can learn more about Post Pagination, and styling this post pagination for a better look at WordPress' official codex page by clicking here.

Saturday, 4 May 2013

Deactivating Jetpack's Mobile Theme In WordPress


Last week, I posted an article about Jetpack's Mobile Theme module, which is the easiest way to create a mobile version of your WordPress blog.

Deactivating Jetpack's services is a very simple task, but I for the first time, I was lost in that module page. It's quite easy. You can check it below:

Visit your WordPress blog's Jetpack plugin and scroll down to Mobile Theme module. Just like below


As you can see in above image, Mobile Theme is already activated in my press. Now to deactivate this theme, click on Learn More button, and it'll look something like this:


Well done.Now as you can see in above image, a Deactivate button is now visible. Click on that Deactivate button to deactivate Mobile Theme. That's it.

Also, I'm trying to customize this mobile theme, and will post some tutorials soon.

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