/**
* Retrieves HTML code of relating elements of initially related or
* explicitly selected element.
*
* @param array $data custom data to be passed to template on rendering
* @param string $template name of custom template to use instead of default one on rendering
* @param int $listNodeAtIndex index of node to list properties of
* (default: node at opposite end of relation)
* @return string rendering result
*/
public function render($data = array(), $template = null, $listNodeAtIndex = -1)
{
$query = $this->query();
// extend query to fetch all properties of selected node's model
$query->addProperty($this->datasource->qualifyDatasetName($this->nodeAtIndex($listNodeAtIndex)->getName()) . '.*');
// process query
$matches = $query->execute()->all();
// start variable space initialized using provided set of custom data
$data = variable_space::fromArray($data);
// add fetched relation instances to variable space
$data->update('matches', $matches);
// add reference on current relation manager instance
$data->update('relation', $this);
// render variable space using selected or default template
return view::render($template ? $template : 'model/relation/generic', $data);
}
/**
* Makes user adopting current role.
*
* @param user $user user to adopt current role
* @return $this
* @throws \Exception on failing to adopt role
*/
public function makeAdoptedBy(user $user)
{
$role = $this;
if (!$this->_source->transaction()->wrap(function (datasource\connection $db) use($role, $user) {
$userID = $user->getUUID();
$roleID = $role->id;
$count = $db->createQuery('user_role')->addCondition('user_uuid=?', true, $userID)->addCondition('role_id=?', true, $roleID)->execute(true)->cell();
if ($count > 0) {
// role has been adopted before
return true;
}
$qSet = $db->qualifyDatasetName('user_role');
return $db->test('INSERT INTO ' . $qSet . ' (user_uuid,role_id) VALUES (?,?)', $userID, $roleID) !== false;
})) {
throw new \RuntimeException(sprintf('adopting role %s by user %s failed', $this->label, $user->getName()));
}
return $this;
}
/**
* Compiles SQL term for use in WHERE clauses to select records matching all
* properties in given filter.
*
* Resulting term is using parameter markers for values of those properties
* to be matched. These values have to be given on querying data source.
*
* @param connection $source data source to use for quoting names
* of filtering properties
* @param array $filter set of "properties" and "values"
* @return string SQL-term
*/
protected function _compileFilterTerm(connection $source, $filter)
{
return implode(' AND ', array_map(function ($n) use($source) {
return $source->quoteName($n) . '=?';
}, $filter['properties']));
}
/**
* Qualifies and/or quotes provided property names.
*
* @param array $arrNames set of property names to process
* @param string|null $strSetOrAlias name/alias of data set, provide for qualified names, omit for unqualified names
* @param connection $source used optionally to quote names for use in querying connected data source
* @return array set of qualified and/or quoted names of properties
*/
protected function _qualifyNames($arrNames, $strSetOrAlias = null, connection $source = null)
{
$parts = array();
if (is_string($strSetOrAlias)) {
$parts[] = $source ? $source->qualifyDatasetName(trim($strSetOrAlias)) : $strSetOrAlias;
}
foreach ($arrNames as $key => $name) {
$temp = $parts;
$temp[] = $source ? $source->quoteName(trim($name)) : trim($name);
$arrNames[$key] = implode('.', $temp);
}
return $arrNames;
}
/**
* Retrieves query on datasource prepared to basically operate on current
* model's data set.
*
* @param string $alias optional alias of model's data set in query
* @return query customizable query on current model
*/
public function query($alias = null)
{
$alias = trim($alias);
return $this->_source->createQuery(static::set() . ($alias != '' ? " {$alias}" : ''));
}
/**
* Processes input on current editor.
*
* @param callable $validatorCallback
* @return bool|string false on input failures requiring user action,
* "saved" on input successfully saved to data source,
* "cancel" on user pressing cancel button,
* "delete" on user deleting record
*/
public function processInput($validatorCallback = null)
{
if ($this->hasInput()) {
switch (input::vget('_cmd')) {
case 'cancel':
// permit closing editor due to user requesting to cancel editing
return 'cancel';
case 'delete':
// delete current edited item
if ($this->may['delete'] && $this->item) {
$ctx = $this;
$item = $this->item;
$fields = $this->fields;
$this->datasource->transaction()->wrap(function () use($ctx, $item, $fields) {
foreach ($fields as $field) {
/** @var model_editor_field $field */
$field->type()->onDeleting($ctx, $item, $field);
}
$item->delete();
return true;
});
$this->item = null;
return 'delete';
}
view::flash(\de\toxa\txf\_L('You must not delete this item.'), 'error');
return false;
case 'save':
// extract some protected properties from current instance to be used in transaction-wrapped callback
$ctx = $this;
$class = $this->class;
$source = $this->datasource;
$fields = $this->fields;
$enabled = $this->enabled;
$item = $this->item;
$fixed = $this->getFixed();
$errors = array();
$this->onCreating = !$this->hasItem();
if (!$this->onCreating && !$this->may['edit']) {
view::flash(\de\toxa\txf\_L('You must not edit this item.'), 'error');
return false;
}
// wrap modification on model in transaction
$success = $source->transaction()->wrap(function () use($ctx, $class, $source, $fields, $enabled, $fixed, &$item, &$errors, $validatorCallback) {
$properties = array();
foreach ($fields as $property => $definition) {
/** @var model_editor_field $definition */
if (!count($enabled) || !@$enabled[$property]) {
try {
// normalize input
$input = call_user_func(array($definition->type(), 'normalize'), $ctx->getValue($property, $definition->isCustom()), $property, $ctx);
// validate input
$success = call_user_func(array($definition->type(), 'validate'), $input, $property, $ctx);
// save input if valid
if ($success) {
$properties[$property] = $input;
} else {
$errors[$property] = \de\toxa\txf\_L('Your input is invalid.');
}
} catch (\Exception $e) {
$errors[$property] = $e->getMessage();
}
}
}
if (count($errors)) {
return false;
}
if (is_callable($validatorCallback)) {
// provide opportunity to qualify properties for validation
$qualified = $properties;
foreach ($fields as $field) {
/** @var model_editor_field $field */
$qualified = $field->type()->beforeValidating($ctx, $item, $qualified, $field);
}
// invoke custom callback given those qualified copy of properties for validating
$localErrors = call_user_func($validatorCallback, $qualified, $errors, $item ? $item->id() : null);
if ($localErrors === false || is_string($localErrors) || is_array($localErrors) && count($localErrors)) {
if (is_array($localErrors)) {
$errors = array_merge($errors, $localErrors);
} else {
if (is_string($localErrors)) {
view::flash($localErrors, 'error');
}
}
return false;
}
}
if ($item) {
// on updating item -> don't adjust values of
// properties marked as fixed
foreach ($fixed as $name => $value) {
unset($properties[$name]);
}
} else {
// creating new item -> ensure to use fixed initial
// values provided additionally
foreach ($fixed as $name => $value) {
$properties[$name] = $value;
}
}
// optionally pre-process saving properties of item
foreach ($fields as $field) {
/** @var model_editor_field $field */
$properties = $field->type()->beforeStoring($ctx, $item, $properties, $field);
}
if ($item) {
// update properties of existing item
foreach ($properties as $name => $value) {
$item->__set($name, $value);
}
} else {
// create new item
$item = $class->getMethod('create')->invoke(null, $source, $properties);
// tell all elements to have item now
foreach ($fields as $field) {
/** @var model_editor_field $field */
$field->type()->onSelectingItem($ctx, $item, $field);
}
}
// optionally post-process saving properties of item
foreach ($fields as $field) {
/** @var model_editor_field $field */
$item = $field->type()->afterStoring($ctx, $item, $properties, $field);
}
return true;
});
// transfer adjusted properties back to protected scope of current instance
$this->errors = $errors;
// write back item created or probably replaced by afterStoring() call in transaction
$this->item = $item;
if ($success) {
// permit closing editor after having saved all current input
view::flash(\de\toxa\txf\_L('Your changes have been saved.'));
return 'saved';
}
view::flash(\de\toxa\txf\_L('Failed to save your changes.'), 'error');
}
}
// don't close editor
return false;
}
/**
* Retrieves name of data set optionally combined with declared alias.
*
* On providing datasource connection either part of resulting name is
* quoted (and qualified) according to quoting and qualification rules of
* connected datasource.
*
* @param connection $db
* @return string
*/
public function getFullName(connection $db = null)
{
$name = $this->getName(true);
$alias = $this->alias ? $this->alias : null;
if ($db) {
$name = $db->qualifyDatasetName($name);
if ($alias) {
$alias = $db->quoteName($alias);
}
}
return $alias ? $name . ' ' . $alias : $name;
}
/**
* Declares data set of model in provided data source.
*
* @throws datasource_exception on failing to declare model's data set
* @param connection $source
* @return model_relation_model current instance
*/
public function declareInDatasource(connection $source)
{
$setName = $this->getSetName();
// test runtime cache for including mark on having declared data set in
// provided data source before
if (array_key_exists($setName, self::$declaredCached)) {
foreach (self::$declaredCached[$setName] as $s) {
if ($s === $source) {
return $this;
}
}
}
if ($this->isVirtual()) {
// wrapping faked model
// -> use provided description to declare model's set in data source
if (!$source->createDataset($setName, $this->definition, $this->primaries)) {
throw new datasource_exception($source, 'failed to create data set of model ' . $setName);
}
} else {
// wrapping actually existing model
// -> call its model::updateSchema() on provided data source
$this->reflection->getMethod('updateSchema')->invoke(null, $source);
}
// add mark to runtime cache on having declared model's data set in
// provided data source
self::$declaredCached[$setName] = array_merge((array) self::$declaredCached[$setName], array($source));
return $this;
}
