function DisplayPluginBase::validate

Overrides PluginBase::validate

File

core/modules/views/src/Plugin/views/display/DisplayPluginBase.php, line 2483

Class

DisplayPluginBase

Base class for views display plugins.

Namespace

Code

public function validate() {
    $errors = [];
    // Make sure displays that use fields HAVE fields.
    if ($this->usesFields()) {
        $fields = FALSE;
        foreach ($this->getHandlers('field') as $field) {
            if (empty($field->options['exclude'])) {
                $fields = TRUE;
            }
        }
        if (!$fields) {
            $errors[] = $this->t('Display "@display" uses fields but there are none defined for it or all are excluded.', [
                '@display' => $this->display['display_title'],
            ]);
        }
    }
    // Validate the more link.
    if ($this->isMoreEnabled() && $this->getOption('link_display') !== 'custom_url') {
        $routed_display = $this->getRoutedDisplay();
        if (!$routed_display || !$routed_display->isEnabled()) {
            $errors[] = $this->t('Display "@display" uses a "more" link but there are no displays it can link to. You need to specify a custom URL.', [
                '@display' => $this->display['display_title'],
            ]);
        }
    }
    if ($this->hasPath() && !$this->getOption('path')) {
        $errors[] = $this->t('Display "@display" uses a path but the path is undefined.', [
            '@display' => $this->display['display_title'],
        ]);
    }
    // Validate style plugin.
    $style = $this->getPlugin('style');
    if (empty($style)) {
        $errors[] = $this->t('Display "@display" has an invalid style plugin.', [
            '@display' => $this->display['display_title'],
        ]);
    }
    else {
        $result = $style->validate();
        if (!empty($result) && is_array($result)) {
            $errors = array_merge($errors, $result);
        }
    }
    // Validate query plugin.
    $query = $this->getPlugin('query');
    $result = $query->validate();
    if (!empty($result) && is_array($result)) {
        $errors = array_merge($errors, $result);
    }
    // Check for missing relationships.
    $relationships = array_keys($this->getHandlers('relationship'));
    foreach (ViewExecutable::getHandlerTypes() as $type => $handler_type_info) {
        foreach ($this->getHandlers($type) as $handler_id => $handler) {
            if (!empty($handler->options['relationship']) && $handler->options['relationship'] != 'none' && !in_array($handler->options['relationship'], $relationships)) {
                $errors[] = $this->t('The %handler_type %handler uses a relationship that has been removed.', [
                    '%handler_type' => $handler_type_info['lstitle'],
                    '%handler' => $handler->adminLabel(),
                ]);
            }
        }
    }
    // Validate handlers.
    foreach (ViewExecutable::getHandlerTypes() as $type => $info) {
        foreach ($this->getHandlers($type) as $handler) {
            $result = $handler->validate();
            if (!empty($result) && is_array($result)) {
                $errors = array_merge($errors, $result);
            }
        }
    }
    // Validate extenders.
    foreach ($this->extenders as $extender) {
        $result = $extender->validate();
        if (!empty($result) && is_array($result)) {
            $errors = array_merge($errors, $result);
        }
    }
    return $errors;
}