I am creating a plugin for wordpress.I need database interaction.So i need to run some queries to create table.I want to run those queries in a php function.I need to run this function when this plugin will active.What hooks should i use for this purpose?? Now i am using this:
add_action( 'admin_menu', 'bs_check_database_creation' );
This is working fine so far.But i need appropriate hooks to run this function once when this plugin will activate.
Another queries : i want add a link of this plugin in header/footer/sidebar for end user to go to the plugin end user page.How should i do this?
Currently i've manually added a link for this in wordpress template page.
Thanks in advance
It depends when you want the hook to run, But I think that init or admin_init will be right for you becasue they are the earliest ones running respectively on front and back end.
EDIT : (After comment) The INIT and admin_init are ment to use whenever a plugin needs to RUN, and not on first activation (or install) . writing "I need to run this function when this plugin will active " is a bit confusing :-) active means when it start to run , or when it is actually ACTIVATED ?
If you need to run a function upon ACTIVATION , then it is a bit different..
register_activation_hook(__FILE__, 'o99_brsa_on_activate');
function o99_brsa_on_activate() {
// do your stuff on activation
}
About the links, I am not sure what you mean by end user page ... Do you mean action links ?
And what footer do you mean ? the Admin or the Front ? ( After answering those issues I can try and reply - Even if it is a material for another question .)
As for links in the header / footer . If ou are planning to host this plugin in the wordpress repository please know that it is somewhat against the terms ( unless you request specific permission from the user )
Anyhow , this will do :
function o99_add_to_footer() {
echo '<p>This is inserted at the bottom</p>';
}
add_action('wp_footer', ' o99_add_to_footer');
Related
I am writing a wordpress plugin.
I have noticed in my debug log that i get a lot of PHP errors thrown because my shortcodes are being executed on the admin edit pages and therefore the relevant data is not available because the shortcode is loading dynamic data based upon the user front end. For example i have a function:
function myFunction_availability() {
if (is_admin()) return; // tried adding this but still get the issue
$product = $this->myFunction_get_current_product();
return "<div class='product-availability'>{$product->availability}</div>";
}
Works fine from the front end, but whenever i load the edit page from admin area i get in my log:
PHP Warning: Attempt to read property "availability" on null in /home/vagrant/yodahwp/wp-content/plugins/yodah/class.yodah.php on line 1602
As you can see from my code, i tried adding is_admin() to exit out of the function if viewing an admin page (i.e. the edit post page) but this does not seem to work.
Do any wordpress whizzes have an answer for this? I am a bit surprised that shortcodes are executed on the admin edit pages, or am I missing something?!
Thanks
This is an old question. Usually, this happens when using visual builders.
One solution is to write a condition to check if the product exists.
If using woocommerce you can try:
$product = wc_get_product( get_the_ID() );
if($product){
//continue
}
In your case, you should edit your myFunction_get_current_product() method and verify there if the product exists.
I'm using a WordPress plugin for accepting online bookings (Appointment Hour Booking) and I need to attach a file to the emails sent after submitting the booking request (a PDF file with the general booking terms). I already applied a solution by editing the calls to the wp_mail() function in this way:
wp_mail(trim($payer_email), $subject, $message,
"From: ".$from."\r\n".
$content_type. "X-Mailer: PHP/" . phpversion(),
array(WP_CONTENT_DIR . '/uploads/agreement.pdf'));
The above works but everytime the plugin updates the file is overwritten and I've to reapply the code modification again. There is a better way to do that without being affected by the plugin updates or there is a way to prevent partially or completely a plugin update in WordPress?
Thank you in advance for any help.
Disabling the plugin update isn't a good idea, you may lost important compatibility or security updates. The way the call to the wp_mail() was modified also causes other attachment-related features stop working. The plugin you mention has a filter that can be used to modify the list of attached files, you can put the following code for example into your theme’s functions.php file:
add_filter( 'cpappb_email_attachments', 'my_attach_function', 10, 3 );
function my_attach_function( $attachments, $params, $form_id )
{
$attachments[] = WP_CONTENT_DIR . '/uploads/agreement.pdf';
return $attachments;
}
With the above code located out of the plugin files your file is added to the list of attachments without removing other attachments and locating the code out of the plugin files will prevent being overwritten by the plugin updates.
Your options are:
Fork the plugin and customize it to your needs.
Ask the team behind the plugin to implement a filter hook to allow customizing the headers passed to the wp_mail() function (so you can then attach files to e-mails).
Keep doing what you have been doing until now.
I like option two the best because:
It allows you to customize the behavior of the plugin from the outside, and,
Your changes will survive plugin updates.
I created a new navigation item on the left for my WP Admin:
add_action( 'admin_menu', 'addManagementMenuItem' );
function addManagementMenuItem(){
add_menu_page('Issue Management', 'Issue Management', 'manage_options', 'issue_management_slug', 'issue_management_building_function','',3);
}
function issue_management_building_function(){
if(!current_user_can('manage_options')){
}
else {
?>
...
...
So where I have the ellipsis ... is where my HTML begins and I write out some information to the page with various php echo statements to print some data out.
What I would like to do is now give the user the ability to enter in a filter and press submit. This would issue a POST to another page which would receive the post data, run some stuff, and spit out something else to the screen. I was just thinking this would take the user away from the WP-ADMIN area entirely (what I want to do is keep the user all within the right pane so it looks like it's natively happening on WordPress under my new admin area)
Something feels wrong about this approach above where I'm putting tons of html into functions.php - what is the way to create pages for a custom admin section where I can do things like post forms and go to multiple pages?
I was thinking the best solution would be to put an iframe in my injected HTML in functions.php, and then the pages can talk to themselves just like normal behind the scenes in WP-admin.
Could anyone point me in the right direction?
thanks!
Considering the user input/_POST features you'd like to add to this, you may want to consider building this functionality out as your own plugin. I've always kept custom functionality limited to non-user interaction in the functions.php file, but anything further would probably be better fit as it's own plugin.
For example, what if you created a plugin directory named nullhypothesis:
add_action( 'admin_menu', 'addManagementMenuItem' );
function addManagementMenuItem(){
add_menu_page('Issue Management', 'Issue Management', 'manage_options', 'nullhypothesis/file_to_do_your_bidding.php', 'issue_management_building_function','',3);
}
It's that fourth parameter that in the documentation mentions that you should include the menu_slug, but it doesn't necessarily need to only be a function - it can also be a file you define.
Then, in your file_to_do_your_bidding.php file (within your plugin), you can add whatever _POST functionality you'd need it to. It could also exist as the 'admin' page that the administrator/whoever interacts with.
Was that what you were looking for?
I try to implement a custom function/action after a new user profile has been created in WordPress. To test the code I try to write a text in a file as proof of function execution.
Here is the code that I have inserted at the end of the active theme's functions.php file
if ( ! function_exists( 'register_for_cmsa' ) ) :
function register_for_cmsa($user_id) {
// write in an external file
// writeLogWP($msg) is a function from a file I have included in index.php
writeLogWP("A new user is: " . $user_id);
}
add_action('user_register', 'register_for_cmsa');
endif;
Therefore, I added a new user through the admin panel. As soon as I validate the standard WP add user form (wp-admin/user-new.php) I get a blank page, meaning that the above code is in trouble. But the user is added in the database (it is visible in the users' list if I comment my function). The trouble here is when executing the writeLogWP("A new user is: " . $user_id) statement inside the register_for_cmsa() function.
I tried to see if the statement works outside of the function, while always inside the functions.php file. And I noticed that it writes the message to the external file when I navigate in the WP site, BUT it publishes blank page as soon as I get into the admin dashboard section.
My code is accepted in 'site' side but it is in error in the 'admin' one.
The code is however not executed in the 'site' side because the hook is not triggered. It is triggered only if I go to the 'wp-admin/user-new.php' but ... I can' test it, as per the above reason.
I am really confused, glad to have your comments and, why not, solution.
Thanks
The index.php is not loaded when accessing the WordPress admin, hence the writeLogWP function is not being called in that case. Moving it to functions.php should solve the issue.
In my plugin i have created a custom template that prints a requested sidebar. and for running the code of this template i assigned a custom page to it (by calling update_metadata) .
Is it a good idea for getting content of a specific sidebar into Ajax call ?
Now my problem is that WORDPRESS shows it in the dashboard and front page , and after searching i have not found any easy to understand solution for Hiding a page completely so only can be accessed by its id .
Can any one tell me how to do that ?
you are going about this the wrong way. You can create a function that can create anything that can be created on a wordpress page.
But if you really must you can create a page outside of the database, etc:
add_action('init', 'add_rewrite_rule');
function add_rewrite_rule(){
// add_rewrite_rule(REGEX url, location, priority (i.e. top is before other rewrite rules)
// I created a custom post type for this plugin called market -- replace post_type with whatever you want
//basically tell wordress to add a query var if sidebar is added to url.
add_rewrite_rule('^sidebar?','index.php?is_sidebar_page=1&post_type=market','top');
}
// register a query var
add_action('query_vars','market_set_query_var');
function market_set_query_var($vars) {
array_push($vars, 'is_sidebar_page');
return $vars;
}
// associate a template with your quer_var
add_filter('template_include', 'market_include_template', 1000, 1);
function market_include_template($template){
if(get_query_var('is_sidebar_page')){
$new_template = (theme or plugin path).'/pages/yourpage.php'; // change this path to your file
if(file_exists($new_template))
$template = $new_template;
}
return $template;
}
This will not be a page that will be in the admin section or in any query that relates to pages but someone could of course navigate to this page. But as i said above you would be better to create a function to create your sidebar. If you want a seperate file to handle the "view" you use require_once 'filename'; a file and keep your functions area free of html.
If you are creating functions in a wordpress plugin dont forget many functions may not be available until later in the load process. Use add_action() if you run into any undefined functions
edit:
you are loading wordpress before you get to the template so you have all the functions. (google wp load for more info) + get_header() / get_footer() will also load a few things like css, etc. I had a small typo in the code above, fixed that but basically what you are doing is telling wordpress if someone lands on www.example.com/sidebar to apply a query_var (rewrite rule). Wordpress will look up its saved vars (final function) and return the template assoc. The 2nd function just registers the var.
You also have wp_functions in any file you create and include in a plugin, etc hence why you can create a file that does exactly the same as this page.