class uc_addresses_handler_filter_access in Ubercart Addresses 6.2
Same name and namespace in other branches
- 7 views/uc_addresses_handler_filter_access.inc \uc_addresses_handler_filter_access
A handler to filter a view by checking address access.
Note that this filter does not work well with pager as it alters the results returned by the query and not the query itself. A possible fix for this would be to load all results, but that could become a serious performance hit because:
- all addresses must be fully loaded;
- load hooks are performed on all loaded addresses;
- access hooks are performed on all loaded addresses.
Because of that, pager is not supported by this filter.
Hierarchy
- class \uc_addresses_handler_filter_access extends \views_handler_filter_boolean_operator
Expanded class hierarchy of uc_addresses_handler_filter_access
1 string reference to 'uc_addresses_handler_filter_access'
- uc_addresses_views_data in views/
uc_addresses.views.inc - Implementation of hook_views_data().
File
- views/
uc_addresses_handler_filter_access.inc, line 22 - Contains uc_addresses_handler_filter_access class.
View source
class uc_addresses_handler_filter_access extends views_handler_filter_boolean_operator {
/**
* The assumed name of the aid field in the Views' results.
*
* @var string
* @access protected
*/
protected $aid_field_alias = 'unknown';
/**
* The assumed name of the uid field in the Views' results.
*
* @var string
* @access protected
*/
protected $uid_field_alias = 'unknown';
/**
* Implements views_handler_filter#query().
*
* This method needs to be overriden for two reasons:
* - To prevent Views from adding an extra WHERE condition
* to the query, which is not needed as this filter alters
* the results.
* - To add fields 'aid' and 'uid' to the table, so the filter
* is able to check access based on these two fields.
*/
public function query() {
$this
->ensure_my_table();
// Add our fields.
$this->aid_field_alias = $this->query
->add_field($this->table_alias, $this->real_field);
$this->uid_field_alias = $this->query
->add_field($this->table_alias, 'uid');
// Set flag that the access filter is present.
// This can be handy for other modules to know, for example
// when they'd like to fix the pager problem.
$this->view->uc_addresses_filter_access = TRUE;
}
/**
* Loads a single address.
*
* @param int $aid
* The ID of the address to load.
* @param int $uid
* (optional) The owner of the address.
*
* @return UcAddressesAddresss
* An address object.
*/
public function loadAddress($aid, $uid = NULL) {
if (empty($uid)) {
$address = UcAddressesAddressBook::loadAddress($aid);
}
else {
$address = UcAddressesAddressBook::get($uid)
->getAddressById($aid);
}
return $address;
}
/**
* Removes the rows the user should have no access to.
*
* @param array $values
* The loaded values.
*
* @todo This doesn't work with pager.
*/
public function post_execute(&$values) {
$aid_field_alias = $this->aid_field_alias;
$uid_field_alias = $this->uid_field_alias;
foreach ($values as $index => $row) {
if (!isset($row->{$aid_field_alias})) {
// The address ID field is not found in the row.
// As a result, we can not check address access.
continue;
}
$aid = $row->{$aid_field_alias};
$uid = NULL;
if (isset($row->{$uid_field_alias})) {
$uid = $row->{$uid_field_alias};
}
if (!$aid) {
// The address ID can be missing, for example when used
// in Views where a relationship with uc_addresses is
// optional. In this case, just skip the row.
continue;
}
$address = $this
->loadAddress($aid, $uid);
// Reassign user ID, just in case it was empty in the results.
$uid = $address
->getUserId();
$address_user = user_load($uid);
// Check for access.
if ($this->value && !$this
->check_access($address_user, $address) || !$this->value && $this
->check_access($address_user, $address)) {
// No access. Remove the row from the results and decrease the calculated
// number of rows.
unset($values[$index]);
if (isset($this->view->total_rows)) {
$this->view->total_rows--;
}
}
}
}
/**
* Checks address access for the current user.
*
* @param object $address_user
* The user who owns the address.
* @param UcAddressesAddress
* The address to check access for.
*
* @return boolean
* TRUE, if the user should have access.
* FALSE otherwise.
*/
public function check_access($address_user, $address) {
switch ($this->definition['uc_addresses_access_type']) {
case 'view':
return UcAddressesPermissions::canViewAddress($address_user, $address);
case 'edit':
return UcAddressesPermissions::canEditAddress($address_user, $address);
case 'delete':
return UcAddressesPermissions::canDeleteAddress($address_user, $address);
}
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
uc_addresses_handler_filter_access:: |
protected | property | The assumed name of the aid field in the Views' results. | |
uc_addresses_handler_filter_access:: |
protected | property | The assumed name of the uid field in the Views' results. | |
uc_addresses_handler_filter_access:: |
public | function | Checks address access for the current user. | |
uc_addresses_handler_filter_access:: |
public | function | Loads a single address. | |
uc_addresses_handler_filter_access:: |
public | function | Removes the rows the user should have no access to. | |
uc_addresses_handler_filter_access:: |
public | function | Implements views_handler_filter#query(). |