admin管理员组文章数量:1134756
I have a custom plugin, that creates an admin settings page, with 3 fields:
postIDs, pageIDs and Message.
I am trying to grab the first post displayed on the homepage list and add the contents of the field "message" to the beginning of the content. I'm doing this within a plugin, and I can't work out how to hook into the homepage posts list, get the first post there, and add the "Message" before the content then return it back.
I figured it was something to do with pre_get_posts hook - but I just can't work out the correct way to do it.
Here's the full PHP of the plugin, it all works, I just can't now work out the correct way to get the first post content :(
<?php
/*
Plugin Name: Custom HTML
Description: Custom HTML in Pages
Version: 1.0.0
*/
class Codeable_Fields_Plugin {
public function __construct() {
// Hook into the admin menu
add_action( 'admin_menu', array( $this, 'create_plugin_settings_page' ) );
// Add Settings and Fields
add_action( 'admin_init', array( $this, 'setup_sections' ) );
add_action( 'admin_init', array( $this, 'setup_fields' ) );
}
public function create_plugin_settings_page() {
// Add the menu item and page
$page_title = 'Custom HTML';
$menu_title = 'Custom HTML';
$capability = 'manage_options';
$slug = 'codeable_fields';
$callback = array( $this, 'plugin_settings_page_content' );
$position = 100;
add_menu_page( $page_title, $menu_title, $capability, $slug, $callback, $icon, $position );
}
public function plugin_settings_page_content() {?>
<div class="wrap">
<?php
if ( isset( $_GET['settings-updated'] ) && $_GET['settings-updated'] ){
$this->admin_notice();
} ?>
<form method="POST" action="options.php">
<?php
settings_fields( 'codeable_fields' );
do_settings_sections( 'codeable_fields' );
submit_button();
?>
</form>
</div> <?php
}
public function admin_notice() { ?>
<div class="notice notice-success is-dismissible">
<p>Your settings have been updated!</p>
</div><?php
}
public function setup_sections() {
add_settings_section( 'our_first_section', 'Custom HTML', array( $this, 'section_callback' ), 'codeable_fields' );
}
public function section_callback( $arguments ) {
switch( $arguments['id'] ){
case 'our_first_section':
echo '';
break;
}
}
public function setup_fields() {
$fields = array(
array(
'uid' => 'codeable_pages_field',
'label' => 'Page IDs to Exclude',
'section' => 'our_first_section',
'type' => 'text',
'supplimental' => 'Seperate by comma',
),
array(
'uid' => 'codeable_posts_field',
'label' => 'Post IDs to Exclude',
'section' => 'our_first_section',
'type' => 'text',
'supplimental' => 'Seperate by comma',
),
array(
'uid' => 'codeable_textarea',
'label' => 'Enter Text here',
'section' => 'our_first_section',
'type' => 'textarea',
)
);
foreach( $fields as $field ){
add_settings_field( $field['uid'], $field['label'], array( $this, 'field_callback' ), 'codeable_fields', $field['section'], $field );
register_setting( 'codeable_fields', $field['uid'] );
}
}
public function field_callback( $arguments ) {
$value = get_option( $arguments['uid'] );
if( ! $value ) {
$value = $arguments['default'];
}
switch( $arguments['type'] ){
case 'text':
case 'password':
case 'number':
printf( '<input name="%1$s" id="%1$s" type="%2$s" placeholder="%3$s" value="%4$s" />', $arguments['uid'], $arguments['type'], $arguments['placeholder'], $value );
break;
case 'textarea':
printf( '<textarea name="%1$s" id="%1$s" placeholder="%2$s" rows="5" cols="50">%3$s</textarea>', $arguments['uid'], $arguments['placeholder'], $value );
break;
case 'select':
case 'multiselect':
if( ! empty ( $arguments['options'] ) && is_array( $arguments['options'] ) ){
$attributes = '';
$options_markup = '';
foreach( $arguments['options'] as $key => $label ){
$options_markup .= sprintf( '<option value="%s" %s>%s</option>', $key, selected( $value[ array_search( $key, $value, true ) ], $key, false ), $label );
}
if( $arguments['type'] === 'multiselect' ){
$attributes = ' multiple="multiple" ';
}
printf( '<select name="%1$s[]" id="%1$s" %2$s>%3$s</select>', $arguments['uid'], $attributes, $options_markup );
}
break;
case 'radio':
case 'checkbox':
if( ! empty ( $arguments['options'] ) && is_array( $arguments['options'] ) ){
$options_markup = '';
$iterator = 0;
foreach( $arguments['options'] as $key => $label ){
$iterator++;
$options_markup .= sprintf( '<label for="%1$s_%6$s"><input id="%1$s_%6$s" name="%1$s[]" type="%2$s" value="%3$s" %4$s /> %5$s</label><br/>', $arguments['uid'], $arguments['type'], $key, checked( $value[ array_search( $key, $value, true ) ], $key, false ), $label, $iterator );
}
printf( '<fieldset>%s</fieldset>', $options_markup );
}
break;
}
if( $helper = $arguments['helper'] ){
printf( '<span class="helper"> %s</span>', $helper );
}
if( $supplimental = $arguments['supplimental'] ){
printf( '<p class="description">%s</p>', $supplimental );
}
}
}
}
new Codeable_Fields_Plugin();
add_action ('the_content', 'add_to_header');
function add_to_header(){
$postids = preg_split("/\s*,\s*/", get_option('codeable_posts_field'));
$pageids = preg_split("/\s*,\s*/", get_option('codeable_pages_field'));
if (is_single($postids )) {
$fullcontent = $content;
}
elseif (is_page($pageids)) {
$fullcontent = $content;
}
elseif (is_single() || is_page()) {
$beforecontent = get_option('codeable_textarea');
$fullcontent = $beforecontent . $content;
}
return $fullcontent;
}
Any help would be gratefully received!!
I have a custom plugin, that creates an admin settings page, with 3 fields:
postIDs, pageIDs and Message.
I am trying to grab the first post displayed on the homepage list and add the contents of the field "message" to the beginning of the content. I'm doing this within a plugin, and I can't work out how to hook into the homepage posts list, get the first post there, and add the "Message" before the content then return it back.
I figured it was something to do with pre_get_posts hook - but I just can't work out the correct way to do it.
Here's the full PHP of the plugin, it all works, I just can't now work out the correct way to get the first post content :(
<?php
/*
Plugin Name: Custom HTML
Description: Custom HTML in Pages
Version: 1.0.0
*/
class Codeable_Fields_Plugin {
public function __construct() {
// Hook into the admin menu
add_action( 'admin_menu', array( $this, 'create_plugin_settings_page' ) );
// Add Settings and Fields
add_action( 'admin_init', array( $this, 'setup_sections' ) );
add_action( 'admin_init', array( $this, 'setup_fields' ) );
}
public function create_plugin_settings_page() {
// Add the menu item and page
$page_title = 'Custom HTML';
$menu_title = 'Custom HTML';
$capability = 'manage_options';
$slug = 'codeable_fields';
$callback = array( $this, 'plugin_settings_page_content' );
$position = 100;
add_menu_page( $page_title, $menu_title, $capability, $slug, $callback, $icon, $position );
}
public function plugin_settings_page_content() {?>
<div class="wrap">
<?php
if ( isset( $_GET['settings-updated'] ) && $_GET['settings-updated'] ){
$this->admin_notice();
} ?>
<form method="POST" action="options.php">
<?php
settings_fields( 'codeable_fields' );
do_settings_sections( 'codeable_fields' );
submit_button();
?>
</form>
</div> <?php
}
public function admin_notice() { ?>
<div class="notice notice-success is-dismissible">
<p>Your settings have been updated!</p>
</div><?php
}
public function setup_sections() {
add_settings_section( 'our_first_section', 'Custom HTML', array( $this, 'section_callback' ), 'codeable_fields' );
}
public function section_callback( $arguments ) {
switch( $arguments['id'] ){
case 'our_first_section':
echo '';
break;
}
}
public function setup_fields() {
$fields = array(
array(
'uid' => 'codeable_pages_field',
'label' => 'Page IDs to Exclude',
'section' => 'our_first_section',
'type' => 'text',
'supplimental' => 'Seperate by comma',
),
array(
'uid' => 'codeable_posts_field',
'label' => 'Post IDs to Exclude',
'section' => 'our_first_section',
'type' => 'text',
'supplimental' => 'Seperate by comma',
),
array(
'uid' => 'codeable_textarea',
'label' => 'Enter Text here',
'section' => 'our_first_section',
'type' => 'textarea',
)
);
foreach( $fields as $field ){
add_settings_field( $field['uid'], $field['label'], array( $this, 'field_callback' ), 'codeable_fields', $field['section'], $field );
register_setting( 'codeable_fields', $field['uid'] );
}
}
public function field_callback( $arguments ) {
$value = get_option( $arguments['uid'] );
if( ! $value ) {
$value = $arguments['default'];
}
switch( $arguments['type'] ){
case 'text':
case 'password':
case 'number':
printf( '<input name="%1$s" id="%1$s" type="%2$s" placeholder="%3$s" value="%4$s" />', $arguments['uid'], $arguments['type'], $arguments['placeholder'], $value );
break;
case 'textarea':
printf( '<textarea name="%1$s" id="%1$s" placeholder="%2$s" rows="5" cols="50">%3$s</textarea>', $arguments['uid'], $arguments['placeholder'], $value );
break;
case 'select':
case 'multiselect':
if( ! empty ( $arguments['options'] ) && is_array( $arguments['options'] ) ){
$attributes = '';
$options_markup = '';
foreach( $arguments['options'] as $key => $label ){
$options_markup .= sprintf( '<option value="%s" %s>%s</option>', $key, selected( $value[ array_search( $key, $value, true ) ], $key, false ), $label );
}
if( $arguments['type'] === 'multiselect' ){
$attributes = ' multiple="multiple" ';
}
printf( '<select name="%1$s[]" id="%1$s" %2$s>%3$s</select>', $arguments['uid'], $attributes, $options_markup );
}
break;
case 'radio':
case 'checkbox':
if( ! empty ( $arguments['options'] ) && is_array( $arguments['options'] ) ){
$options_markup = '';
$iterator = 0;
foreach( $arguments['options'] as $key => $label ){
$iterator++;
$options_markup .= sprintf( '<label for="%1$s_%6$s"><input id="%1$s_%6$s" name="%1$s[]" type="%2$s" value="%3$s" %4$s /> %5$s</label><br/>', $arguments['uid'], $arguments['type'], $key, checked( $value[ array_search( $key, $value, true ) ], $key, false ), $label, $iterator );
}
printf( '<fieldset>%s</fieldset>', $options_markup );
}
break;
}
if( $helper = $arguments['helper'] ){
printf( '<span class="helper"> %s</span>', $helper );
}
if( $supplimental = $arguments['supplimental'] ){
printf( '<p class="description">%s</p>', $supplimental );
}
}
}
}
new Codeable_Fields_Plugin();
add_action ('the_content', 'add_to_header');
function add_to_header(){
$postids = preg_split("/\s*,\s*/", get_option('codeable_posts_field'));
$pageids = preg_split("/\s*,\s*/", get_option('codeable_pages_field'));
if (is_single($postids )) {
$fullcontent = $content;
}
elseif (is_page($pageids)) {
$fullcontent = $content;
}
elseif (is_single() || is_page()) {
$beforecontent = get_option('codeable_textarea');
$fullcontent = $beforecontent . $content;
}
return $fullcontent;
}
Any help would be gratefully received!!
Share Improve this question edited Jan 24, 2018 at 18:35 Nathan Johnson 6,5286 gold badges30 silver badges49 bronze badges asked Jan 24, 2018 at 17:46 user2115227user2115227 1614 silver badges16 bronze badges2 Answers
Reset to default 0You can use the loop_start hook which passes the $WP_Query object by reference.
namespace StackExchange\WordPress;
class editFirstPostContent {
public function load() {
if( \is_admin() ) {
return;
}
\add_filter( 'loop_start', [ $this, 'loopStart' ] );
}
public function loopStart( \WP_Query $WP_Query) {
if( ! $WP_Query->is_main_query() ) {
return;
}
if( ! isset( $WP_Query->posts[0] ) ) {
return;
}
$WP_Query->posts[0]->post_content = sprintf(
'<div>Hello World!</div>%1$s',
$WP_Query->posts[0]->post_content
);
}
}
$editFirstPostContent = new editFirstPostContent();
\add_action( 'plugins_loaded', [ $editFirstPostContent, 'load' ] );
For reference, I solved it with this code:
function is_latest() {
global $post;
$loop = get_posts( 'numberposts=1' );
$latest = $loop[0]->ID;
return ( $post->ID == $latest ) ? true : false;
}
Then called the is_latest() function into the if statement at the end
本文标签： hooksGet First Post content and edit it using pregetposts (or similar)
版权声明：本文标题：hooks - Get First Post content and edit it using pre_get_posts (or similar?!) 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1736817419a1954148.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。
发表评论