[@mastababa Participant 5 years, 4 months ago]

I can call a custom template for my custom page like so:

function my_new_group_show_screen_content() {
	echo bp_buffer_template_part( 'groups/group-custom', null, false );
}

Then, just for testing, on that template, I record a visit to that page as an activity, like so:

	$defaults = array(
		'user_id' => '1',
		'action' => 'A user just visited the custom page.',
		'content' => 'It was considered a good time.',
		'primary_link' => '',
		'component' => 'groups',
		'type' => 'naming',
		'item_id' => $bp->groups->current_group->id,
		'secondary_item_id' => get_current_user_id(),
		'recorded_time' => gmdate( "Y-m-d H:i:s" ),
		'hide_sitewide' => '0'
	);

	extract( $defaults );
	
	$r = bp_activity_add( array( 'user_id' => $user_id, 'action' => $action, 'content' => $content, 'primary_link' => $primary_link, 'component' => $component, 'type' => $type, 'item_id' => $item_id, 'secondary_item_id' => $secondary_item_id, 'recorded_time' => $recorded_time, 'hide_sitewide' => $hide_sitewide ) );

So, I could now allow for the creation of instances of my_cpt on this custom page. When adding this instance to the WP database, I also store the group for which it was created. Then, on this custom page, I could show a list of all instances created for this group.
And, when this instance has been created, I can save an activity connected to this group.

[@mastababa Participant 5 years, 4 months ago]

A first step could be to add a custom tab on the groups pages. This works for that:

    function setup_group_nav(){
    	global $bp;	
    	/* Add some group subnav items */
    	$user_access = false;
    	$group_link = '';
    	if( bp_is_active('groups') && !empty($bp->groups->current_group) ){
    		$group_link = $bp->root_domain . '/' . bp_get_groups_root_slug() . '/' . $bp->groups->current_group->slug . '/';
    		$user_access = $bp->groups->current_group->user_has_access;
    		bp_core_new_subnav_item( array( 
    			'name' => __( 'Custom', 'custom'),
    			'slug' => 'custom', 
    			'parent_url' => $group_link, 
    			'parent_slug' => $bp->groups->current_group->slug,
    			'screen_function' => 'bp_group_custom', 
    			'position' => 50, 
    			'user_has_access' => $user_access, 
    			'item_css_id' => 'custom' 
    		));
    	}
    }
    add_action( 'bp_init', 'setup_group_nav' );
    
    function bp_group_custom() {
    	add_action('bp_template_title', 'my_new_group_show_screen_title');
    	add_action('bp_template_content', 'my_new_group_show_screen_content');
    	
    	$templates = array('groups/single/plugins.php', 'plugin-template.php');
    	if (strstr(locate_template($templates), 'groups/single/plugins.php')) {
    		bp_core_load_template(apply_filters('bp_core_template_plugin', 'groups/single/plugins'));
    	} else {
    		bp_core_load_template(apply_filters('bp_core_template_plugin', 'plugin-template'));
    	}
    	
    }
    	
    function my_new_group_show_screen_title() {
    	echo 'New Tab Title';
    }
    	
    function my_new_group_show_screen_content() {
    	echo 'New tab page content';
    	
    }

[@mastababa Participant 5 years, 4 months ago]

I looked at the code for the plugin ‘Events Manager’, and managed to put together the following which worked for me:

    function setup_group_nav(){
    	global $bp;	
    	/* Add some group subnav items */
    	$user_access = false;
    	$group_link = '';
    	if( bp_is_active('groups') && !empty($bp->groups->current_group) ){
    		$group_link = $bp->root_domain . '/' . bp_get_groups_root_slug() . '/' . $bp->groups->current_group->slug . '/';
    		$user_access = $bp->groups->current_group->user_has_access;
    		bp_core_new_subnav_item( array( 
    			'name' => __( 'Custom', 'custom'),
    			'slug' => 'custom', 
    			'parent_url' => $group_link, 
    			'parent_slug' => $bp->groups->current_group->slug,
    			'screen_function' => 'bp_group_custom', 
    			'position' => 50, 
    			'user_has_access' => $user_access, 
    			'item_css_id' => 'custom' 
    		));
    	}
    }
    add_action( 'bp_init', 'setup_group_nav' );
    
    function bp_group_custom() {
    	add_action('bp_template_title', 'my_new_group_show_screen_title');
    	add_action('bp_template_content', 'my_new_group_show_screen_content');
    	
    	$templates = array('groups/single/plugins.php', 'plugin-template.php');
    	if (strstr(locate_template($templates), 'groups/single/plugins.php')) {
    		bp_core_load_template(apply_filters('bp_core_template_plugin', 'groups/single/plugins'));
    	} else {
    		bp_core_load_template(apply_filters('bp_core_template_plugin', 'plugin-template'));
    	}
    	
    }
    	
    function my_new_group_show_screen_title() {
    	echo 'New Tab Title';
    }
    	
    function my_new_group_show_screen_content() {
    	echo 'New tab page content';
    	
    }

[@mastababa Participant 5 years, 4 months ago]

I also just discovered this 🙁