Wordpress: How to create plugin with admin menu options inputs forms

h1.  Step 1

Create plugin folder and add blank php file

h1. Step 2

Add the name and description of the plugin at the beginning of the code

/*

Plugin Name: Fusion Core on Custom Post Types

Description: Enables the ThemeFusion Core page builder on Custom Post Types

*/

h1. Step 3

Here's an example of the full code. *Please read the code description for details*

/*

Plugin Name: Fusion Core on Custom Post Types

Description: Enables the ThemeFusion Core page builder on Custom Post Types

*/


/** WP: Generating plugin menu */


if ( is_admin() ){ // admin actions

  add_action( 'admin_menu', 'fusion_on_cpt' );

  add_action( 'admin_init', 'register_mysettings' );

} else {

  // non-admin enqueues, actions, and filters

}


// Register fields

function register_mysettings() {

  register_setting( 'cpt-group', 'cpt_name' );

}


//Generate options page (to be displayed under settings)

function fusion_on_cpt() {

    add_options_page( 'Fusion on CPT', 'Fusion Core on Custom Post Types', 'manage_options', 'fusion-core-for-cpt', 'fusion_on_cpt_options' );

}


//Generate content for the options page

function fusion_on_cpt_options() {

    if ( !current_user_can( 'manage_options' ) )  {

        wp_die( __( 'You do not have sufficient permissions to access this page.' ) );

    }

    echo '

';

    echo '


Fusion on cpt options
';

    echo 'Please add the names of each custom post type separated by a comma (",")';

    echo '


';

    echo '';

    settings_fields('cpt-group');

    do_settings_sections('cpt-group');

    submit_button();

    echo '

';

}


/** Mods/overrides for fusion builder presets */

add_action ( 'plugins_loaded', function () {


    if ( is_admin() ) {

        //call fusion builder classes

        require_once( WP_PLUGIN_DIR . '/fusion-core/admin/class-pagebuilder.php' );

        require_once( WP_PLUGIN_DIR . '/fusion-core/admin/page-builder/classes/class-ui.php' );

      

        //call fusion builder functions

        $instance = Fusion_Core_PageBuilder::get_instance();

        $ui = Fusion_Core_PageBuilder_UI::get_instance();

      

        //get input data by calling input name

        $a = get_option('cpt_name');

      

        //assign input data into variable

        $variable_string = (isset($a)) ? $a : 'position';

      

        //clean input data and create array for each

        $custom_post_types = explode(",", $variable_string);

      

        //inform fusion builder about content types to be altered

        foreach($custom_post_types as $allowed_cpt) {

      

            $instance->allowed_post_types[] = $allowed_cpt;

            $ui->settings['allowed_post_types'][] = $allowed_cpt;

      

        }

    }

  

}, 9); // priority 9 to be called before the line of fusion-core.php

Plugin has been attached to this entry.