The plugin generated 2 characters of unexpected output during activation. If you notice “headers already sent” messages, my code is below
<?php
/*
Plugin Name: configuration
Description: example plugin to demonstrate wordpress capatabilities
Author: kailash
License: Public Domain
*/
// run the install scripts upon plugin activation
function test_init() {
if(isset($_POST['save'])) {
$setting=$_POST['setting'];
global $wpdb;
$table_name ="setting";
$wpdb->query("UPDATE $table_name SET setting='$setting' WHERE id=1");
//echo"Setting Saved";
}
?>
<form name="form" id="myform" method="POST">
<input type="radio" name="setting" value="2" <?php if($setting==2){echo 'checked="checked"';}?> id="term"/>newconfiguration<br>
<input type="radio" name="setting" value="1" <?php if($setting==1){echo 'checked="checked"';}?> id="term"/>oldconfiguration<br>
<input type="submit" name="save" value="save">
<?php
}
add_action('admin_menu', 'config_plugin_setup_menu');
function config_plugin_setup_menu(){
add_menu_page( 'Test Plugin Page', 'configuration', 'manage_options', 'config-plugin', 'test_init' );
}
Headers already sent
It is usually because there are spaces, new lines, or other garbage before an opening <?php tag or after a closing ?>
check and remove all unnecessary space. example check before
<form> tag. means after ?> tag there is extra space in your code. so check other too and remove all space..!
Check that the very first characters are
<?php
Check that the very last characters are
?>
for details check this
https://codex.wordpress.org/Answers-Troubleshooting
Related
I am trying to make a wp plugin to show a list from table,which can be edited and
deleted .
I am succeed in showing a list in plugin.but not getting how to update .
can any one tell me what will be the path in form action,
,and after form get submited where does it goes ie on which page.
on which page should i write update query
You can place all your form handlers on the same page, but be sure to place them before any output. Like this:
<?
if (isset($_POST['my-form-submit'])) : // check if form is submitted
/*
Here goes update process etc
*/
endif;
get_header();
?>
<form action="<?php echo $_SERVER['REQUEST_URI']; ?>" method="POST">
/* Here come form fields */
<input type="submit" name="my-form-submit" value="Update" />
</form>
<?php
get_footer();
?>
The following code is in a wordpress page.
<form action="action_page.php" method="post">
Name:<br>
<input type="text" name="name" value="Mickey">
<input type="submit" value="Submit">
</form>
action_page.php
<?php $name=$_POST['name']; echo $name;?>
I would like to diplay the output(Mickey) in a wordpress page, instead of php page. Please help me.
You can achieve it via AJAX, see the codex
Add this to functions.php
add_action( 'wp_ajax_add_foobar', 'prefix_ajax_add_foobar' );
add_action( 'wp_ajax_nopriv_add_foobar', 'prefix_ajax_add_foobar' );
function prefix_ajax_add_foobar() {
// Handle request then generate response using WP_Ajax_Response
// In a real world scenario, apply all the validation,
// sanitization and black magic to POSTed variables before using them
$name=$_POST['name'];
echo $name;
}
Now the following could go in footer.php inside of <script> tags or in a separate JS file.
jQuery.post(
ajaxurl,
{
'action': 'add_foobar',
'data': jQuery("form").sanitize()
},
function(response){
alert('The server responded: ' + response);
}
);
All things being equal you should see an alert with the value that was posted.
Hi i am new to wordpress plugin development. i have issues with settings api. please help if you can.
Below is my problem.
The problem i am facing is the last record which is link it is updating in database but the title text is not updating in database.
So please help me find solution. Thank you.
function load_plugin() {
add_settings_section('plugin_main', '<h1>Ticker Settings</h1>', 'plugin_section_text', 'plugin');
add_settings_field('plugin_text_string', 'Title text', 'plugin_setting_string', 'plugin', 'plugin_main');
add_settings_field('post_title_link', 'Link', 'plugin_link_setting', 'plugin', 'plugin_main');
register_setting('plugin_options', 'plugin_options');
register_setting('post_title_link', 'post_title_link');
}
function plugin_section_text() {
echo '<p>Change your post ticker title and give link to.</p>';
}
function plugin_setting_string() {
echo "<input id='plugin_text_string' name='plugin_options' size='40'
type='text' value='" . get_option('plugin_options') . "' />";
}
function plugin_link_setting() {
echo "<input id='post_title_link' name='post_title_link' size='40'
type='text' value='" . get_option('post_title_link') . "' />";
}
add_action('admin_init', 'load_plugin');
function post_ticker_setting() {
?>
<div class="wrap">
<form action="options.php" method="post">
<?php
settings_fields('plugin_options');
settings_fields('post_title_link');
do_settings_sections('plugin');
?>
<input name="Submit" type="submit" value="<?php esc_attr_e('Save Changes'); ?>" />
</form>
</div>
<?php
}
You have to register all settings with register_setting (https://codex.wordpress.org/Function_Reference/add_settings_field). The register_setting lines you show don't correspond to your fields.
Also sections should be declared after the fields are registered (https://codex.wordpress.org/Function_Reference/register_setting)
In your code, the following lines
<?php
settings_fields('plugin_options');
settings_fields('post_title_link');
do_settings_sections('plugin');
?>
don't correspond to the declarations above:
add_settings_section('plugin_main', ...
add_settings_field('plugin_text_string', ...
add_settings_field('post_title_link', ...
Only the 'post_title_link' has the same name. Which is probably why it is the only one updating.
I noticed a strange bug when testing out one of our Wordpress apps.
I have a form with an input field and if I type a number such as "3" anywhere in the input text Wordpress will throw a 404:
<input name="author" type="text" />
If I change the name attribute from author to anything else, it works fine:
<input name="bob" type="text" />
I'm not a Wordpress guru or even a PHP dev so I apologize if this is trivial. I've stripped out everything possible from this PHP page. Is there some Wordpress magic going on here where "author" is some sort of reserved word? Here's the entire PHP file (the header is a simple nav-bar and the footer just calls wp_footer()....):
<?php
/**
* Template Name: MyTemplate
*/
get_header();
if(isset($_POST['submitted'])):
echo "<H4>Submitted!</H4>";
else:
?>
<form id="my-form" action="<?php the_permalink(); ?>" method="post">
<input name="author" type="text" /><br/><br/>
<input type="hidden" name="submitted" id="submitted" value="true" />
<input type="submit" value="Submit"/>
</form>
<?php
endif;
get_footer();
OK wow.. So it looks like there are reserved words in form posts:
http://codex.wordpress.org/Function_Reference/register_taxonomy#Reserved_Terms
Sorry for such a novice question.
I have added within my WordPress 3.1 site, the following code at the bottom of my sidebar.php file:
<div id="search_box">
<form id="searchform" action="http://www.service.com/" method="get" role="search">
<input id="s" type="text" name="s" class="search" value="Search site" size="19" maxlength="80" id="white_box" onfocus="if (this.value=='Search site') this.value = ''"/>
<input id="searchsubmit" type="image" class="submit" value="submit" src="<?php bloginfo( 'template_url' ); ?>/images/search_btn.jpg" />
</form>
</div>
As I have coded this search process myself, when I place a some text within my search text box and press the "Search" button, it looks as if, is is calling the page search.php within my theme and displaying the results.
Questions:
1) where/how does it know when I press the "Search" button to go off and call search.php?
2) if possible only, how can I change it to call a different php file instead of the search.php
Thanks.
Use template filter
add_filter( 'template_include', 'template_include', 10 );
and change the template as
function template_include($template)
{
if(your condition here){
$template = get_template_directory().'/your-template.php';
}
return $template;
}
-1. All requests for a WP site go to a single page that routes them based upon specific criteria. Thus when a search is performed it knows that it is a search and directs to the search.php page.
Specifically it goes to index.php that loads wp-blog-header.php.
-2: Everything you need to know should be right here: http://codex.wordpress.org/Creating_a_Search_Page#Using_the_page.php
Wordpress assumes the request is a search if it sees an 's' GET variable.
You can hook into the template_redirect action (in your theme's functions.php file) and load a different template like so:
add_action('template_redirect', 'my_template_select');
function my_template_select() {
if (is_search()) {
load_template(TEMPLATEPATH . '/foobar.php');
exit;
}
}