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June 24, 2012 04:53
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Upload custom avatars for users to override gravatar for comments and author_meta
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| <?php | |
| /* | |
| Plugin Name: Custom WordPress Avatars | |
| Plugin URI: http://c3mdigital.com | |
| Description: Adds a custom avatar uploader in the user profile to replace gravatars with a custom avatar | |
| Version: 1.0 | |
| Author: Chris Olbekson | |
| Author URI: http://c3mdigital.com/ | |
| License: GPL v2 | |
| */ | |
| /* Copyright 2011 Chris Olbekson (email : [email protected]) | |
| This program is free software; you can redistribute it and/or modify | |
| it under the terms of the GNU General Public License, version 2, as | |
| published by the Free Software Foundation. | |
| This program is distributed in the hope that it will be useful, | |
| but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| GNU General Public License for more details. | |
| You should have received a copy of the GNU General Public License | |
| along with this program; if not, write to the Free Software | |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| class simple_local_avatars { | |
| function simple_local_avatars() { | |
| add_filter( 'get_avatar', array ( $this, 'get_avatar' ), 10, 5 ); | |
| add_action( 'admin_init', array ( $this, 'admin_init' ) ); | |
| add_action( 'show_user_profile', array ( $this, 'edit_user_profile' ) ); | |
| add_action( 'edit_user_profile', array ( $this, 'edit_user_profile' ) ); | |
| add_action( 'personal_options_update', array ( $this, 'edit_user_profile_update' ) ); | |
| add_action( 'edit_user_profile_update', array ( $this, 'edit_user_profile_update' ) ); | |
| add_filter( 'avatar_defaults', array ( $this, 'avatar_defaults' ) ); | |
| } | |
| function get_avatar( $avatar='', $id_or_email, $size='96', $default='', $alt=false ) { | |
| if ( is_numeric( $id_or_email ) ) | |
| $user_id=(int)$id_or_email; | |
| elseif ( is_string( $id_or_email ) && ( $user=get_user_by_email( $id_or_email ) ) ) | |
| $user_id=$user->ID; | |
| elseif ( is_object( $id_or_email ) && !empty( $id_or_email->user_id ) ) | |
| $user_id=(int)$id_or_email->user_id; | |
| if ( empty( $user_id ) ) | |
| return $avatar; | |
| $auth = get_the_author_meta( 'user_login', $user_id ); | |
| $wp_content = WP_CONTENT_DIR; | |
| $wp_content_url = WP_CONTENT_URL; | |
| $filename=$wp_content . '/images/authors/' . $auth . '.jpg'; | |
| if ( file_exists( $filename ) ) { | |
| $avatar=$wp_content_url . '/images/authors/' . $auth . '.jpg'; | |
| $meta=array ( | |
| 'full'=>$avatar | |
| ); | |
| if ( !get_user_meta( $user_id, 'simple_local_avatar', true ) ) | |
| update_user_meta( $user_id, 'simple_local_avatar', $meta ); | |
| update_user_meta ( $user_id, 'big_avatar', $meta ); | |
| } | |
| $local_avatars = get_user_meta( $user_id, 'simple_local_avatar', true ); | |
| if ( empty( $local_avatars ) || empty( $local_avatars[ 'full' ] ) ) | |
| return $avatar; | |
| $size=(int)$size; | |
| if ( empty( $alt ) ) | |
| $alt=get_the_author_meta( 'display_name', $user_id ); | |
| // generate a new size | |
| if ( empty( $local_avatars[ $size ] ) ) { | |
| $upload_path=wp_upload_dir(); | |
| $avatar_full_path=str_replace( $upload_path[ 'baseurl' ], $upload_path[ 'basedir' ], $local_avatars[ 'full' ] ); | |
| $image_sized=image_resize( $avatar_full_path, $size, $size, true ); | |
| // deal with original being >= to original image (or lack of sizing ability) | |
| $local_avatars[ $size ]=is_wp_error( $image_sized ) | |
| ? $local_avatars[ $size ]=$local_avatars[ 'full' ] | |
| : str_replace( $upload_path[ 'basedir' ], $upload_path[ 'baseurl' ], $image_sized ); | |
| update_user_meta( $user_id, 'simple_local_avatar', $local_avatars ); | |
| } elseif ( substr( $local_avatars[ $size ], 0, 4 ) != 'http' ) { | |
| $local_avatars[ $size ]=site_url( $local_avatars[ $size ] ); | |
| } | |
| $author_class=is_author( $user_id ) ? ' current-author' : ''; | |
| $avatar="<img alt='" . esc_attr( $alt ) . "' src='" . $local_avatars[ $size ] . "' class='avatar avatar-{$size}{$author_class} photo' height='{$size}' width='{$size}' />"; | |
| return apply_filters( 'simple_local_avatar', $avatar ); | |
| } | |
| function admin_init() { | |
| register_setting( 'discussion', 'simple_local_avatars_caps', array ( $this, 'sanitize_options' ) ); | |
| add_settings_field( 'simple-local-avatars-caps', __( 'Local Avatar Permissions', 'simple-local-avatars' ), array ( $this, 'avatar_settings_field' ), 'discussion', 'avatars' ); | |
| } | |
| function sanitize_options( $input ) { | |
| $new_input[ 'simple_local_avatars_caps' ]=empty( $input[ 'simple_local_avatars_caps' ] ) ? 0 : 1; | |
| return $new_input; | |
| } | |
| function avatar_settings_field( $args ) { | |
| $options=get_option( 'simple_local_avatars_caps' ); | |
| echo ' | |
| <label for="simple_local_avatars_caps"> | |
| <input type="checkbox" name="simple_local_avatars_caps" id="simple_local_avatars_caps" value="1" ' . @checked( $options[ 'simple_local_avatars_caps' ], 1, false ) . ' /> | |
| ' . __( 'Only allow users with file upload capabilities to upload local avatars (Authors and above)', 'simple-local-avatars' ) . ' | |
| </label> | |
| '; | |
| } | |
| function edit_user_profile( $profileuser ) { | |
| ?> | |
| <h3><?php _e( 'Avatar', 'simple-local-avatars' ); ?></h3> | |
| <table class="form-table"> | |
| <tr> | |
| <th><label for="simple-local-avatar"><?php _e( 'Upload Avatar', 'simple-local-avatars' ); ?></label> | |
| </th> | |
| <td style="width: 50px;" valign="top"> | |
| <?php echo get_avatar( $profileuser->ID ); ?> | |
| </td> | |
| <td> | |
| <?php | |
| $options=get_option( 'simple_local_avatars_caps' ); | |
| if ( empty( $options[ 'simple_local_avatars_caps' ] ) || current_user_can( 'upload_files' ) ) { | |
| do_action( 'simple_local_avatar_notices' ); | |
| wp_nonce_field( 'simple_local_avatar_nonce', '_simple_local_avatar_nonce', false ); | |
| ?> | |
| <input type="file" name="simple-local-avatar" id="simple-local-avatar"/><br/> | |
| <?php | |
| if ( empty( $profileuser->simple_local_avatar ) ) | |
| echo '<span class="description">' . __( 'No local avatar is set. Use the upload field to add a local avatar.', 'simple-local-avatars' ) . '</span>'; | |
| else | |
| echo ' | |
| <input type="checkbox" name="simple-local-avatar-erase" value="1" /> ' . __( 'Delete local avatar', 'simple-local-avatars' ) . '<br /> | |
| <span class="description">' . __( 'Replace the local avatar by uploading a new avatar, or erase the local avatar (falling back to a gravatar) by checking the delete option.', 'simple-local-avatars' ) . '</span> | |
| '; | |
| } else { | |
| if ( empty( $profileuser->simple_local_avatar ) ) | |
| echo '<span class="description">' . __( 'No local avatar is set. Set up your avatar at Gravatar.com.', 'simple-local-avatars' ) . '</span>'; | |
| else | |
| echo '<span class="description">' . __( 'You do not have media management permissions. To change your local avatar, contact the blog administrator.', 'simple-local-avatars' ) . '</span>'; | |
| } | |
| ?> | |
| </td> | |
| </tr> | |
| </table> | |
| <script type="text/javascript">var form = document.getElementById('your-profile'); | |
| form.encoding = 'multipart/form-data'; | |
| form.setAttribute('enctype', 'multipart/form-data');</script> | |
| <?php | |
| } | |
| function edit_user_profile_update( $user_id ) { | |
| if ( !isset( $_POST[ '_simple_local_avatar_nonce' ] ) || !wp_verify_nonce( $_POST[ '_simple_local_avatar_nonce' ], 'simple_local_avatar_nonce' ) ) //security | |
| return; | |
| if ( !empty( $_FILES[ 'simple-local-avatar' ][ 'name' ] ) ) { | |
| $mimes=array ( | |
| 'jpg|jpeg|jpe'=>'image/jpeg', | |
| 'gif'=>'image/gif', | |
| 'png'=>'image/png', | |
| 'bmp'=>'image/bmp', | |
| 'tif|tiff'=>'image/tiff' | |
| ); | |
| // front end (theme my profile etc) support | |
| if ( !function_exists( 'wp_handle_upload' ) ) | |
| require_once( ABSPATH . 'wp-admin/includes/file.php' ); | |
| $this->avatar_delete( $user_id ); // delete old images if successful | |
| $avatar=wp_handle_upload( $_FILES[ 'simple-local-avatar' ], array ( 'mimes'=>$mimes, 'test_form'=>false, 'unique_filename_callback'=>array ( $this, 'unique_filename_callback' ) ) ); | |
| if ( empty( $avatar[ 'file' ] ) ) { // handle failures | |
| switch ( $avatar[ 'error' ] ) { | |
| case 'File type does not meet security guidelines. Try another.' : | |
| add_action( 'user_profile_update_errors', create_function( '$a', '$a->add("avatar_error",__("Please upload a valid image file for the avatar.","simple-local-avatars"));' ) ); | |
| break; | |
| default : | |
| add_action( 'user_profile_update_errors', create_function( '$a', '$a->add("avatar_error","<strong>".__("There was an error uploading the avatar:","simple-local-avatars")."</strong> ' . esc_attr( $avatar[ 'error' ] ) . '");' ) ); | |
| } | |
| return; | |
| } | |
| update_user_meta( $user_id, 'simple_local_avatar', array ( 'full'=>$avatar[ 'url' ] ) ); // save user information (overwriting old) | |
| } elseif ( !empty( $_POST[ 'simple-local-avatar-erase' ] ) ) { | |
| $this->avatar_delete( $user_id ); | |
| } | |
| } | |
| /** | |
| * remove the custom get_avatar hook for the default avatar list output on options-discussion.php | |
| */ | |
| function avatar_defaults( $avatar_defaults ) { | |
| remove_action( 'get_avatar', array ( $this, 'get_avatar' ) ); | |
| return $avatar_defaults; | |
| } | |
| /** | |
| * delete avatars based on user_id | |
| */ | |
| function avatar_delete( $user_id ) { | |
| $old_avatars=get_user_meta( $user_id, 'simple_local_avatar', true ); | |
| $auth=get_the_author_meta( 'user_login', $user_id ); | |
| $wp_content=WP_CONTENT_DIR; | |
| $filename=$wp_content . '/images/authors/' . $auth . '.jpg'; | |
| if ( file_exists( $filename ) ) { | |
| unlink( $filename ); | |
| } | |
| else { | |
| $upload_path=wp_upload_dir(); | |
| if ( is_array( $old_avatars ) ) { | |
| foreach ( $old_avatars as $old_avatar ) { | |
| $old_avatar_path=str_replace( $upload_path[ 'baseurl' ], $upload_path[ 'basedir' ], $old_avatar ); | |
| @unlink( $old_avatar_path ); | |
| } | |
| } | |
| } | |
| delete_user_meta( $user_id, 'simple_local_avatar' ); | |
| } | |
| function unique_filename_callback( $dir, $user_id, $ext ) { | |
| global $user_id; | |
| $user_picname = get_the_author_meta ( 'display_name', $user_id ); | |
| $user = wp_get_current_user(); | |
| $name = sanitize_file_name( $user_picname . '_avatar' ); | |
| $number = 1; | |
| while ( file_exists( $dir . "/$name$ext" ) ) { | |
| $name = $name . '_' . $number; | |
| $number++; | |
| } | |
| return $name . $ext; | |
| } | |
| } | |
| $simple_local_avatars = new simple_local_avatars; | |
| function get_simple_local_avatar( $id_or_email, $size='300', $default='', $alt=false ) { | |
| global $simple_local_avatars; | |
| $avatar=$simple_local_avatars->get_avatar( '', $id_or_email, $size, $default, $alt ); | |
| if ( empty ( $avatar ) ) | |
| $avatar=get_avatar( $id_or_email, $size, $default, $alt ); | |
| return $avatar; | |
| } |
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