def notify_assignment(shared_by, doctype, doc_name, everyone):

	if not (shared_by and doctype and doc_name) or everyone: return

	from frappe.utils import get_fullname

	title_field = frappe.get_meta(doctype).get_title_field()
	title = doc_name if title_field == "name" else \
		frappe.db.get_value(doctype, doc_name, title_field)

	reference_user = get_fullname(frappe.session.user)
	notification_message = _('{0} shared a document {1} {2} with you').format(
		frappe.bold(reference_user), frappe.bold(doctype), frappe.bold(title))

	notification_doc = {
		'type': 'Share',
		'document_type': doctype,
		'subject': notification_message,
		'document_name': doc_name,
		'from_user': frappe.session.user
	}

	enqueue_create_notification(shared_by, notification_doc)