我正在使用一个名为twitter oAuth的优秀脚本，供开发人员为我的wordpress网站创建一个twitter提要插件。目的是创建一个小部件，用户可以在其中输入用户名和要显示的推文数量，并显示在客户端网站上。
开发人员的Twitter oAuth创建了以下用于显示推文的功能：
getTweets($number_of_tweets, $twitter_screenname_to_load);
由于我允许用户更改用户名和推文数量，我将其更改为：
$no_of_tweets = $widget['no_of_tweets'];
$twitter_username = $widget['twitter_username'];
$tweets = getTweets($no_of_tweets, ''.$twitter_username.'');
其中$widget['no_of_tweets']和$widget[`twitter_username']是用户指定的参数。
我为这个插件设置了如下默认值：
/* Setup Widget Defaults */
$this->defaults = array (
...
'twitter_username' => 'skizzar_sites',
'no_of_tweets' => 3,
...
)
);
因此，当我加载我的插件时，它会显示来自skizzar_sites的最新3条推文——这是应该的。然而，当用户更改号码或用户名时，小部件会从随机用户输出一条随机推文。
我编写函数的方式有明显的问题吗：
$tweets = getTweets($no_of_tweets, ''.$twitter_username.'');
以下是我的完整小部件代码供参考：
<?php /**
* Layers Twitter Widget
*
* This file is used to register and display the Layers widget.
* http://docs.layerswp.com/development-tutorials-layers-builder-widgets/
*
* @package Layers
* @since Layers 1.0.0
*/
if( !class_exists( 'Layers_Twitter_Widget' ) && class_exists( 'Layers_Widget' ) ) {
// http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#widget-class
class Layers_Twitter_Widget extends Layers_Widget {
/**
* 1 - Widget construction
* http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#1-widget-construction
*/
function Layers_Twitter_Widget(){
$this->widget_title = __( 'Tweets' , 'layerswp' );
$this->widget_id = 'tweets';
$this->post_type = '';
$this->taxonomy = '';
$this->checkboxes = array();
/* Widget settings. */
$widget_ops = array(
'classname' => 'obox-layers-' . $this->widget_id .'-widget',
'description' => __( 'This widget is used to display your Tweets', 'layerswp')
);
/* Widget control settings. */
$control_ops = array(
'width' => '660',
'height' => NULL,
'id_base' => 'layers-widget-' . $this->widget_id
);
/* Create the widget. */
parent::__construct( 'layers' . '-widget-' . $this->widget_id , $this->widget_title, $widget_ops, $control_ops );
/* Setup Widget Defaults */
$this->defaults = array (
'title' => __( 'Twitter Feed', 'layerswp' ),
'excerpt' => __( 'Display a list of your most recent tweets', 'layerswp' ),
'twitter_username' => 'skizzar_sites',
'no_of_tweets' => 3,
'design' => array(
'layout' => 'layout-boxed',
'textalign' => 'text-left',
'background' => array(
'position' => 'center',
'repeat' => 'no-repeat'
),
'fonts' => array(
'align' => 'text-left',
'size' => 'medium',
'color' => NULL,
'shadow' => NULL
)
)
);
} // END main function
/**
* 2 - Widget form
* http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#2-widget-form
* We use regulage HTML here, it makes reading the widget much easier
* than if we used just php to echo all the HTML out.
*
*/
function form( $instance ){
// $instance Defaults
$instance_defaults = $this->defaults;
// If we have information in this widget, then ignore the defaults
if( !empty( $instance ) ) $instance_defaults = array();
// Parse $instance
$instance = wp_parse_args( $instance, $instance_defaults );
extract( $instance, EXTR_SKIP );
// Design Bar Components
$design_bar_components = apply_filters(
'layers_' . $this->widget_id . '_widget_design_bar_components' ,
array(
'layout',
'fonts',
'background',
'advanced'
)
);
// Instantiate the Deisgn Bar
$this->design_bar(
'side', // CSS Class Name
array(
'name' => $this->get_field_name( 'design' ),
'id' => $this->get_field_id( 'design' ),
), // Widget Object
$instance, // Widget Values
$design_bar_components // Standard Components
);
// Build Content Form
// http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#content-options-form
?>
<div class="layers-container-large">
<?php
$this->form_elements()->header(
array(
'title' => __( 'Tweets' , 'layerswp' ),
'icon_class' => 'post'
)
);
?>
<section class="layers-accordion-section layers-content">
<div class="layers-row layers-push-bottom">
<p>In order for the twitter widget to work, you will need to set up a twitter app and add your API credentials to the dashboard. Click here to enter your API details.</p>
<p class="layers-form-item">
<?php echo $this->form_elements()->input(
array(
'type' => 'text',
'name' => $this->get_field_name( 'title' ) ,
'id' => $this->get_field_id( 'title' ) ,
'placeholder' => __( 'Enter title here' , 'layerswp' ),
'value' => ( isset( $title ) ) ? $title : NULL ,
'class' => 'layers-text layers-large'
)
); ?>
</p>
<p class="layers-form-item">
<?php echo $this->form_elements()->input(
array(
'type' => 'rte',
'name' => $this->get_field_name( 'excerpt' ) ,
'id' => $this->get_field_id( 'excerpt' ) ,
'placeholder' => __( 'Short Excerpt' , 'layerswp' ),
'value' => ( isset( $excerpt ) ) ? $excerpt : NULL ,
'class' => 'layers-textarea layers-large'
)
); ?>
</p>
<p class="layers-form-item">
<?php
echo $this->form_elements()->input(
array(
'type' => 'text',
'name' => $this->get_field_name( 'twitter_username' ) ,
'id' => $this->get_field_id( 'twitter_username' ) ,
'placeholder' => __( 'Twitter username' , 'layerswp' ),
'value' => ( isset( $twitter_username ) ) ? $twitter_username : NULL ,
'class' => 'layers-text layers-large'
)
); ?>
</p>
<p class="layers-form-item">
<?php
echo __( 'Number of tweets to show' , 'layerswp' );
echo $this->form_elements()->input(
array(
'type' => 'number',
'name' => $this->get_field_name( 'no_of_tweets' ) ,
'id' => $this->get_field_id( 'no_of_tweets' ) ,
'value' => ( isset( $no_of_tweets ) ) ? $no_of_tweets : NULL ,
'min' => '1',
'max' => '20'
)
); ?>
</p>
</div>
</section>
</div>
<?php
} // Form
/**
* 3 - Update Options
* http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#3-update-controls
*/
function update($new_instance, $old_instance) {
if ( isset( $this->checkboxes ) ) {
foreach( $this->checkboxes as $cb ) {
if( isset( $old_instance[ $cb ] ) ) {
$old_instance[ $cb ] = strip_tags( $new_instance[ $cb ] );
}
} // foreach checkboxes
} // if checkboxes
return $new_instance;
}
/**
* 4 - Widget front end display
* http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#4-widget-front-end
*/
function widget( $args, $instance ) {
// Turn $args array into variables.
extract( $args );
// $instance Defaults
$instance_defaults = $this->defaults;
// If we have information in this widget, then ignore the defaults
if( !empty( $instance ) ) $instance_defaults = array();
// Parse $instance
$widget = wp_parse_args( $instance, $instance_defaults );
// Apply Styling
// http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#colors-and-font-settings
layers_inline_styles( '#' . $widget_id, 'background', array( 'background' => $widget['design'][ 'background' ] ) );
layers_inline_styles( '#' . $widget_id, 'color', array( 'selectors' => array( '.section-title h3.heading' , '.section-title div.excerpt' ) , 'color' => $widget['design']['fonts'][ 'color' ] ) );
// Apply the advanced widget styling
$this->apply_widget_advanced_styling( $widget_id, $widget );
// Generate the widget container class
// Do not edit
$widget_container_class = array();
$widget_container_class[] = 'widget row content-vertical-massive';
$widget_container_class[] = $this->check_and_return( $widget , 'design', 'advanced', 'customclass' );
$widget_container_class[] = $this->get_widget_spacing_class( $widget );
$widget_container_class = implode( ' ', apply_filters( 'layers_post_widget_container_class' , $widget_container_class ) );
/**
* Widget Markup
* http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#widget-html
*/
?>
<section class=" <?php echo $widget_container_class; ?>" id="<?php echo $widget_id; ?>">
<?php if( '' != $this->check_and_return( $widget , 'title' ) ||'' != $this->check_and_return( $widget , 'excerpt' ) ) { ?>
<div class="container clearfix">
<?php
// Generate the Section Title Classes
$section_title_class = array();
$section_title_class[] = 'section-title clearfix';
$section_title_class[] = $this->check_and_return( $widget , 'design', 'fonts', 'size' );
$section_title_class[] = $this->check_and_return( $widget , 'design', 'fonts', 'align' );
$section_title_class[] = ( $this->check_and_return( $widget, 'design', 'background' , 'color' ) && 'dark' == layers_is_light_or_dark( $this->check_and_return( $widget, 'design', 'background' , 'color' ) ) ? 'invert' : '' );
$section_title_class = implode( ' ', $section_title_class ); ?>
<div class="<?php echo $section_title_class; ?>">
<?php if( '' != $widget['title'] ) { ?>
<h3 class="heading"><?php echo esc_html( $widget['title'] ); ?></h3>
<?php } ?>
<?php if( '' != $widget['excerpt'] ) { ?>
<div class="excerpt"><?php echo $widget['excerpt']; ?></div>
<?php } ?>
</div>
</div>
<?php }
// Begin Post Structure ?>
<div class="row <?php echo $this->get_widget_layout_class( $widget ); ?> <?php echo $this->check_and_return( $widget , 'design', 'liststyle' ); ?>">
<?php //start Twitter output
// draft sample display for array returned from oAuth Twitter Feed for Developers WP plugin
// http://wordpress.org/extend/plugins/oauth-twitter-feed-for-developers/
$no_of_tweets = $widget['no_of_tweets'];
$twitter_username = $widget['twitter_username'];
$tweets = getTweets($no_of_tweets, ''.$twitter_username.'');
if(is_array($tweets)){
// to use with intents
echo '<script type="text/javascript" src="//platform.twitter.com/widgets.js"></script>';
foreach($tweets as $tweet){
if($tweet['text']){
$the_tweet = $tweet['text'];
// i. User_mentions must link to the mentioned user's profile.
if(is_array($tweet['entities']['user_mentions'])){
foreach($tweet['entities']['user_mentions'] as $key => $user_mention){
$the_tweet = preg_replace(
'/@'.$user_mention['screen_name'].'/i',
'<a href="http://www.twitter.com/'.$user_mention['screen_name'].'" target="_blank">@'.$user_mention['screen_name'].'</a>',
$the_tweet);
}
}
// ii. Hashtags must link to a twitter.com search with the hashtag as the query.
if(is_array($tweet['entities']['hashtags'])){
foreach($tweet['entities']['hashtags'] as $key => $hashtag){
$the_tweet = preg_replace(
'/#'.$hashtag['text'].'/i',
'<a href="https://twitter.com/search?q=%23'.$hashtag['text'].'&src=hash" target="_blank">#'.$hashtag['text'].'</a>',
$the_tweet);
}
}
// iii. Links in Tweet text must be displayed using the display_url
// field in the URL entities API response, and link to the original t.co url field.
if(is_array($tweet['entities']['urls'])){
foreach($tweet['entities']['urls'] as $key => $link){
$the_tweet = preg_replace(
'`'.$link['url'].'`',
'<a href="'.$link['url'].'" target="_blank">'.$link['url'].'</a>',
$the_tweet);
}
}
echo $the_tweet;
// 3. Tweet Actions
// Reply, Retweet, and Favorite action icons must always be visible for the user to interact with the Tweet. These actions must be implemented using Web Intents or with the authenticated Twitter API.
// No other social or 3rd party actions similar to Follow, Reply, Retweet and Favorite may be attached to a Tweet.
// get the sprite or images from twitter's developers resource and update your stylesheet
echo '
<ul class="twitter_intents">
<li><a class="reply" href="https://twitter.com/intent/tweet?in_reply_to='.$tweet['id_str'].'"><i class="fa fa-reply"></i>R</a></li>
<li><a class="retweet" href="https://twitter.com/intent/retweet?tweet_id='.$tweet['id_str'].'"><i class="fa fa-retweet"></i>R</a></li>
<li><a class="favorite" href="https://twitter.com/intent/favorite?tweet_id='.$tweet['id_str'].'"><i class="fa fa-heart"></i>F</a></li>
</ul>';
// 4. Tweet Timestamp
// The Tweet timestamp must always be visible and include the time and date. e.g., “3:00 PM - 31 May 12”.
// 5. Tweet Permalink
// The Tweet timestamp must always be linked to the Tweet permalink.
echo '
<p class="timestamp">
<a href="https://twitter.com/YOURUSERNAME/status/'.$tweet['id_str'].'" target="_blank">
'.date('h:i A M d',strtotime($tweet['created_at']. '- 8 hours')).'
</a>
</p>';// -8 GMT for Pacific Standard Time
} else {
echo '
<br /><br />
<a href="http://twitter.com/YOURUSERNAME" target="_blank">Click here to read YOURUSERNAME'S Twitter feed</a>';
}
}
}
// end Twitter output ?>
</div>
</section>
<?php }
} // Class
// Register our widget
// http://docs.layerswp.com/development-tutorials-layers-builder-widgets/#register-and-initialize
register_widget('Layers_Twitter_Widget');
}
啊哈！我刚刚发现了这一点——记得几年前我也遇到过类似的问题，那是因为函数中的no_of_tweets和_username参数被错误地记录了下来。
代替
getTweets($number_of_tweets, $twitter_screenname_to_load);
its：
getTweets($twitter_screenname_to_load, $number_of_tweets);