public function isValid($datasource = null)
{
$filterchain = new A_Filter_Set();
$validator = new A_Rule_Set();
$validator->excludeRules($this->excludeRules);
$validator->includeRules($this->includeRules);
$this->error = false;
$this->errorMsg = array();
if ($this->includeRules) {
$rule_names = $this->includeRules;
} else {
$rule_names = array_keys($this->fields);
}
if ($this->excludeRules) {
$rule_names = array_diff($rule_names, $this->excludeRules);
}
$field_names = array_keys($this->fields);
if ($field_names) {
if (!$datasource) {
$datasource = $this->datasource;
}
// set values from datasource
foreach ($field_names as $name) {
if ($datasource->has($name)) {
$this->fields[$name]->value = $datasource->get($name);
}
}
// run global filters on all fields
if ($this->filters) {
foreach ($this->fields as $field) {
$field->value = $filterchain->doFilter($field->value, $this->filters);
}
}
// run field filters
foreach ($this->fields as $field) {
if (isset($field->filters)) {
$field->value = $filterchain->doFilter($field->value, $field->filters);
}
}
// run rules for each field
foreach ($this->fields as $name => $field) {
// clear errors
$field->setErrorMsg();
// check if there are rules and if included
if (isset($field->rules) && in_array($name, $rule_names)) {
foreach ($field->rules as $rule) {
// check if set to override rule's optional setting
if ($field->optional !== null) {
$rule->setOptional($field->optional);
}
$validator->addRule($rule);
}
}
}
// check if there are rules and run those as well
if ($this->rules) {
foreach ($this->rules as $name => $rule) {
$validator->addRule($rule);
}
}
// if the validator is not valid get its errors
if (!$validator->isValid($datasource)) {
$this->error = true;
$errors = $validator->getErrorMsg();
foreach ($errors as $fieldname => $errorarray) {
$this->setErrorMsg($fieldname, $errorarray);
}
}
}
return !$this->error;
}
