I want only friends of a user to post on message board and send messages. any code I could add to existing plugin will be helpful

Those should be pretty simple modifications to make. You'll need to wrap the add form output and the actions for both plugins in a check to see if the user trying to send a message is a friend. To do this, use the check_entity_relationship() function like:

if (check_entity_relationship($logged_in_user, 'friend', $user_receiving_the_message) {

    // let it go

} else {

    register_error('You have to be a friend to message this person.');

    forward(REFERRER);

}

@jetwumoore there's already a plugin that let's you choose whether you want your friends to send you or anyone:

http://community.elgg.org/pg/plugins/release/315864/developer/slyhne/messages-with-privacy-option-11

Rodolfo Hernandez
Arvixe/Elgg Community Liaison

Well it's easy enough to create a cron job using Elgg, that combined with a function that deletes entities from age does the job.

In your plugins start.php you should just place a line like this, and create a function that does your thing :-)

register_plugin_hook('cron', 'weekly', 'your_cunning_function_cron_hook');

Good luck

I have not created any plugin. Never tried. I guess no solution for now

please make some plugin like this ?