WordPress › Support » Write to post by logged in users

I just installed a theme which needs right to post by a logged in user.The theme 's guide suggested me to paste this code in functions.php

function quality_ticket_creation_cap()
{
	if( current_user_can( 'read' ) )
		return true;

	return false;
}

But it is not working proper if I use that code. It is working if remove if( current_user_can( 'read' ) )

and enable every user to post using this :

function quality_ticket_creation_cap()
{
	return true;
}

But what should I do If need only the logged in users to post?

Thanks !

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