Tobias Nyholm

Prevents an user to publish a post without a thumbnail. If a user presses the publish button without a thumbnail, the post will 
be saved as a draft. For more information see installation page or the 
<a href="http://www.webfish.se/wp/plugins/require-thumbnail" title="Webfish - WordPress plugin" rel="nofollow ugc">Webfish</a> homepage.

Require Thumbnail

Prevents an user to publish a post without a thumbnail.

Vicky Arulsingam

Allow authors to select an image from a pre-defined list while in the Post Editor screen. This image will be displayed together with a post.
Post Avatar is similar in concept to Livejournal userpics wherein authors choose images uploaded by the site owner. Developed with Dominik Menke.
<h4>Features</h4>
<ul>
<li>Easy selection of images from within the Post Editor screen.</li>
<li>Scans images in sub-directories of the image option folder.</li>
<li>Allows the following file types: .jpg, .jpeg, .gif and .png.</li>
<li>Flexible with customizing avatar display.
<ul>
<li>Display avatars using the default HTML/CSS tags.</li>
<li>HTML/CSS tags can be edited from with the Settings screen.</li>
<li>Use template tags and custom filters within themes for advanced customization.</li>
</ul>
</li>
<li>International language support for Belorussian, Czech, Dutch, French, German, Hindi, Irish, Italian, Polish, Romanian, Serbo-Croatian, Spanish</li>
<li>Does not display missing images.</li>
<li>Can be further extended to show images for pages and custom post types</li>
</ul>
<h4>Bug Submission and Forum Support</h4>
<a href="https://wordpress.org/support/plugin/post-avatar/" rel="ugc">WordPress Forum</a>
<a href="http://garinungkadol.com/plugins/post-avatar/support/" rel="nofollow ugc">Post Avatar home page</a>
<h4>Please Vote and Review</h4>
Your votes and feedback are greatly appreciated. Thanks.
<h3>Advanced Customization</h3>
<h4>For Front End Display</h4>
By default, the plugin hooks into the following filters: <a href="https://codex.wordpress.org/Plugin_API/Filter_Reference/the_content" rel="nofollow ugc">the_content()</a> and <a href="https://codex.wordpress.org/Plugin_API/Filter_Reference/the_content" rel="nofollow ugc">the_excerpt()</a>.
OVERRIDE HTML DISPLAY USING FILTER HOOK: gklpa_the_postavatar
The <code>gklpa_the_postavatar</code> filter takes two parameters:
<ol>
<li>
<code>$post_avatar_text</code> – Original HTML display
</li>
<li>
<code>$post_avatar</code> – Post Avatar data in array format. The keys are:
<pre><code>avatar_url: The URL to the image 
show_image_dim: 1 indicates to show image dimensions, 0 to hide them 
image_height: integer value of image height or null if image dimensions is turned off 
image_width: integer value of image width or null if image dimensions is turned off 
post_id: ID of current post 
post_title: Post title for the image attribute 
image_name: Image file name
</code></pre>
</li>
</ol>
Example: Display a default image if no avatar is selected
This example makes use of the HTML/CSS settings defined by the site admin.
<pre><code> add_filter( 'gklpa_the_postavatar', 'prefix_show_default_image', 10, 2 );
 function prefix_show_default_image( $post_avatar_html, $post_avatar_array ){
 global $post, $gklpa_plugin_settings;

 // Display default image;
 if( is_null( $post_avatar_array ) ){
 if( !empty( $gklpa_plugin_settings['css_class'] ) {
 $css = 'class="' . $gkl_plugin_settings['css_class']. '"';
 }
 $post_avatar_html = $gklpa_plugin_settings['html_before' ] . '<img '. $css . ' src="http://wplatest.dev/images/default-image.jpg" alt="' . esc_attr(strip_tags($post->post_title) ) . '" />'. $gklpa_plugin_settings['html_after'];
 }
 return $post_avatar_html;
 }
</code></pre>
OVERRIDE HTML DISPLAY WITH CUSTOM CONTENT HOOK
If you want to change the HTML completely or override the option to display avatars automatically, use the <a href="https://codex.wordpress.org/Function_Reference/remove_filter" rel="nofollow ugc">remove_filter()</a> like so: 
 remove_filter(‘the_content’, ‘gkl_postavatar_filter’, 99 ); 
 remove_filter(‘the_excerpt’, ‘gkl_postavatar_filter’, 99 );
You can then define your own <code>the_content</code> filter function that makes use of the <code>gkl_postavatar()</code> or <code>gkl_get_postavatar()</code> functions
You will need to use the function <code>gkl_get_postavatar()</code> which takes the post object and returns the array of post avatar information.
<ol>
<li>
<code>$post_avatar_array</code> – Post Avatar data in array format. The keys are:
<pre><code>avatar_url: The URL to the image

show_image_dim: 1 indicates to show image dimensions, 0 to hide them

image_height: integer value of image height or null if image dimensions is turned off

image_width: integer value of image width or null if image dimensions is turned off

post_id: ID of current post

post_title: Post title for the image attribute

image_name: Image file name
</code></pre>
</li>
</ol>
Example:
<pre><code> add_filter( 'the_content', 'my_custom_post_avatar' );
 function my_custom_post_avatar( $content ){
 global $post;

 $current_avatar = gkl_get_postavatar( $post );
 $html_before = '';
 $html_after = '';
 // Display default image
 if( is_null( $current_avatar ) ) {
 $image_url = 'http://wplatest.dev/images/default-image.jpg';
 $alt_text = esc_attr(strip_tags($post->post_title) );
 } else {
 $image_url = $current_avatar['avatar_url'];
 $alt_text = $current_avatar['post_title'];
 }
 $post_avatar_html = $html_before . '<img src="'. $image_url . '" alt="' . $alt_text . '" />'. $html_after;

 return $post_avatar_html; 
 }
</code></pre>
OVERRIDE HTML DISPLAY WITH template tag <code>gkl_postavatar</code>
If you want the post avatar to appear outside of the content, e.g. with the entry’s meta information, make use of the <code>gkl_postavatar()</code> template tag.
It takes four paramters:
<pre><code> class: CSS class to use in the `<img>` tag. 
 before: HTML to appear before the image. 
 after: HTML to appear after the image. 
 do_what: Use `echo` to display the post avatar, `return` to pass it to a variable. Defaults to `echo`.
</code></pre>
Example: In a template file:
<pre><code> <div class="entry-meta"> 
 <?php gkl_postavatar('', "", "" );?>

 -- more template tags here --
 </div>
</code></pre>
Or you can make your own template tag function like in the example for “Override HTML display with custom content hook”, except you call the function directly in your template instead of hooking into <code>the_content()</code>.
<h4>For Administration Screens</h4>
Add Post Avatar to Pages and Custom Post Types
Use the filter hook <code>gklpa_allowed_post_types</code> to add further post types that you want the Post Avatar selection to appear on.
It takes an array of post type slugs as a parameter.
<pre><code> add_filter( 'gklpa_allowed_post_types', 'prefix_my_custom_post_types' );
 function prefix_my_custom_post_types( $current_post_types ){
 $current_post_types = array( 'post', 'page', 'review', 'event' );
 return $current_post_types;
 }
</code></pre>
Enable Image Selection for Folder Outside of WordPress Installation
By default, Post Avatar looks for your images folder in relation to your WordPress installation. If you want to move your folder elsewhere, use these pair of filter hooks: <code>gklpa_image_url</code> and <code>gklpa_image_dir</code>. They take a single parameter: Image folder url and absolute path to the image folder, respectively.
<pre><code> add_filter( 'gklpa_image_url', 'prefix_change_folder_url' );
 function prefix_change_folder_url( $current_url ){
 return esc_url( 'http://mysite.com/images/' );
 }

 add_filter( 'gklpa_image_dir', 'prefix_change_folder_dir' );
 function prefix_change_folder_dir ){
 return '/user/public_html/images/';
 }
</code></pre>
Please visit the <a href="http://www.garinungkadol.com/plugins/post-avatar/" rel="nofollow ugc">Post Avatar Page</a> for details on customizing the avatar display.
<h4>Translations</h4>
Post Avatar is translation-ready and supports a number of languages. If you can’t find your language here, please consider contributing a language pack.
If you’re interested, please check out the <a href="https://wordpress.org/extend/plugins/codestyling-localization/" rel="ugc">“Codestyling Localization” plugin</a> and for validating the <a href="http://www.poedit.net/" rel="nofollow ugc">“Poedit Editor”</a>.
Send in your translations to vix@garinungkadol.com
Thanks to the following for their language packs.
<ul>
<li>Belorussian (ru_RU) Fat Cower</li>
<li>Czech (cz_CZ) Lelkoun</li>
<li>Dutch (nl_NL) Jay August</li>
<li>French (fr_FR) Mathieu Haratyk</li>
<li>German (de_DE) Dominik Menke</li>
<li>Hindi (hi_IN_Hindi) Outshine Solutions </li>
<li>Irish (ga_IR) Ray S.</li>
<li>Italian (it_IT) Gianni Diurno</li>
<li>Polish (pl_PL) Meloniq</li>
<li>Romanian (ro_RO) Webhosting Geeks</li>
<li>Serbo-Croatian (sr_RS) Webhosting Hub</li>
<li>Spanish (es_ES) gogollack</li>
</ul>

Post Avatar

Choose an avatar from a pre-defined list to include in a post.

Require Thumbnail vs Post Avatar