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-- Gemeinschaft 5 module: group class
-- (c) AMOOMA GmbH 2013
--
module(...,package.seeall)
Group = {}
MAX_GROUP_MEMBERSHIPS = 256;
-- create group object
function Group.new(self, arg)
arg = arg or {}
object = arg.object or {}
setmetatable(object, self);
self.__index = self;
self.class = 'group';
self.log = arg.log;
self.database = arg.database;
return object;
end
-- find group by id
function Group.find_by_id(self, id)
local sql_query = 'SELECT * FROM `groups` WHERE `id`= ' .. tonumber(id) .. ' LIMIT 1';
local group = nil;
self.database:query(sql_query, function(account_entry)
group = Group:new(self);
group.record = account_entry;
group.id = tonumber(account_entry.id);
group.name = account_entry.name;
end);
return group;
end
-- list groups by member permissions
function Group.name_id_by_permission(self, member_id, member_type, permission)
if not tonumber(member_id) then
return {};
end
local sql_query = 'SELECT DISTINCT `c`.`id`, `c`.`name` \
FROM `group_permissions` `a` \
JOIN `group_memberships` `b` ON `a`.`target_group_id` = `b`.`group_id` \
JOIN `groups` `c` ON `c`.`id` = `b`.`group_id` \
WHERE `b`.`item_type` = ' .. self.database:escape(member_type, '"') .. ' \
AND `b`.`item_id` = ' .. member_id .. ' \
AND `a`.`permission` = ' .. self.database:escape(permission, '"') .. ' \
GROUP BY `b`.`group_id` LIMIT ' .. MAX_GROUP_MEMBERSHIPS;
local group_names = {};
local group_ids = {};
self.database:query(sql_query, function(account_entry)
table.insert(group_names, account_entry.name);
table.insert(group_ids, tonumber(account_entry.id));
end);
return group_names, group_ids;
end
-- list groups by member
function Group.name_id_by_member(self, member_id, member_type)
if not tonumber(member_id) then
return {};
end
local sql_query = 'SELECT DISTINCT `c`.`id`, `c`.`name` \
FROM `group_memberships` `b` \
JOIN `groups` `c` ON `c`.`id` = `b`.`group_id` \
WHERE `b`.`item_type` = ' .. self.database:escape(member_type, '"') .. ' \
AND `b`.`item_id` = ' .. member_id .. ' \
GROUP BY `b`.`group_id` LIMIT ' .. MAX_GROUP_MEMBERSHIPS;
local group_names = {};
local group_ids = {};
self.database:query(sql_query, function(account_entry)
table.insert(group_names, account_entry.name);
table.insert(group_ids, tonumber(account_entry.id));
end);
return group_names, group_ids;
end
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