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我將盡我所能解釋我在這裏要做的事情。如何在登錄表單中顯示用戶上傳的頭像？
我爲我的wordpress創建了一個登錄表單，它允許用戶直接從主頁登錄，其中包括已登錄的配置文件的頭像。以下是我提出的代碼。
<div id="loginDiv">
<!-- If User Is Logged In Display This -->
<?php if (is_user_logged_in()) { ?>
Welcome <strong><?php echo $user_identity ?></strong>.
<?php echo get_avatar($id_or_email,$size='100'); ?>
<form name="loginform" id="loginform" action="<?php echo wp_logout_url(); ?>" method="post">
<input type="submit" name="wp-submit" id="wp-submit" value="LOG OUT" />
<a href="http://www.bignotch.com/wp-admin/profile.php">EDIT YOUR PROFILE</a>
<input type="hidden" name="redirect_to" value="<?php bloginfo('url'); ?>" />
</form>
<!-- If User Is NOT Logged In Display This -->
<? } else { ?>
<form name="loginform" id="loginform" action="<?php bloginfo('url'); ?>/wp-login.php" method="post">
<label for="log">Username</label> <input type="text" name="log" id="user_login" class="input" value="" size="20" tabindex="10" /></p>
<label for="pwd">Password</label> <input type="password" name="pwd" id="user_pass" class="input" value="" size="20" tabindex="20" /></p>
<input type="submit" name="wp-submit" id="wp-submit" value="LOG IN" /> <input type="button" value="SIGNUP" onClick="parent.location='<?php bloginfo('url'); ?>/wp-login.php?action=register'" />
<a href="<?php bloginfo('url'); ?>/wp-login.php?action=lostpassword">Lost your password?</a>
<input type="hidden" name="redirect_to" value="<?php bloginfo('url'); ?>/members" />
<input type="hidden" name="testcookie" value="1" />
</form>
<? } ?></div>
這裏的問題是，WordPress的要求用戶去「gravatar」網站，以創建一個化身。這對我沒有好處。所以，我安裝了簡單的本地化身插件，允許用戶上傳自己的用戶照片，但我無法弄清楚如何讓我的圖像顯示在我的自定義登錄表單中。
的代碼我使用在登錄形式來顯示所述化身的部分是：
<?php echo get_avatar($id_or_email,$size='100'); ?>
但似乎它試圖抓住的Gravatar圖像。我需要這個來抓取用戶上傳的圖片。我怎樣才能做到這一點？
編輯：
下面是簡單的本地阿凡達插件的PHP代碼：
class simple_local_avatars
{
function simple_local_avatars() {
add_filter('get_avatar', array($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;
$local_avatars = get_user_meta($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', $avatar);
}
function admin_init() {
load_plugin_textdomain('simple-local-avatars', false, dirname(plugin_basename(__FILE__)) . '/localization/');
register_setting('discussion', 'simple_local_avatars_caps', array($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);
$upload_path = wp_upload_dir();
if (is_array($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, $name, $ext) {
$user = wp_get_current_user();
$name = sanitize_file_name($user->display_name . '_avatar');
$number = 1;
while (file_exists($dir . "/$name$ext")) {
$name = $name . '_' . $number;
$number++;
}
return $name . $ext;
}
}
$simple_local_avatars = new simple_local_avatars;
/**
* more efficient to call simple local avatar directly in theme and avoid gravatar setup
*
* @param int|string|object $id_or_email A user ID, email address, or comment object
* @param int $size Size of the avatar image
* @param string $default URL to a default image to use if no avatar is available
* @param string $alt Alternate text to use in image tag. Defaults to blank
* @return string <img> tag for the user's avatar
*/
function get_simple_local_avatar($id_or_email, $size = '96', $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;
}
/**
* on uninstallation, remove the custom field from the users and delete the local avatars
*/
register_uninstall_hook(__FILE__, 'simple_local_avatars_uninstall');
function simple_local_avatars_uninstall() {
$simple_local_avatars = new simple_local_avatars;
$users = get_users_of_blog();
foreach ($users as $user)
$simple_local_avatars->avatar_delete($user->user_id);
delete_option('simple_local_avatars_caps');
}
我試過這個，但它只是抓住了wordpress gravatar而不是** Simple Local Avatars *頭像圖片。我一直在研究wordpress插件中的一些變量，並將不同的代碼串放在一起。 –
如果使用全局$ current_user;在你想要回顯頭像的那一行之前，用戶從後端的wp profile頁面上傳一張圖片，它會使用它。請嘗試使用相同的代碼並確保上傳新的圖像（同時檢查您是否使用任何緩存解決方案） – sbrajesh
是的！這樣做！不言而喻，你是最棒的人！我花了幾個小時試圖理解腳本，足以爲此提供工作代碼。顯然，我需要多學習一點。感謝你！ –