CiviCRM Community Forums (archive)

Hello everyone. This is a real stumper and one for which I've spent far too much time with nothing to show for it. When trying to use, or view, or edit the views on the civicrm_events view, I always get an error:

Notice: Trying to get property of non-object in views_ui_get_display_tab() (line 1466 of /home/openphar/public_html/sites/all/modules/views/includes/admin.inc).
Display "Defaults" has an invalid style plugin.

If I look at the "Events Page" tab, it further states "Error: Display calendar_1 refers to a plugin named 'calendar', but that plugin is not available." When I click "Events Block", I get "Error: Display calendar_block_1 refers to a plugin named 'calendar_block', but that plugin is not available."

The short and sweet of it is that it seems impossible to use Views to access CiviEvents calendar blocks or displays when using Drupal 7 ad CiviCRM 4.0.5. Thinking I screwed up on my customer site where this first occurred, I installed a brand new Drupal 7.8 site with CiviCRM 4.0.5 using only the sample data option, installed Views, Calendar, Date, and Ctools (to satisfy prerequisites), and tried again.

In all cases, I also get "Unable to preview due to validation errors."

What needs to be done in order to successfully use Calendar Views with CiviEvents when using Drupal 7 and CiviCRM 4?

Please help me Civiwan Kenobi. You're my only hope.

--
Marcel (Writer and Free Thinker at Large) Gagné
Note: This massagee wos nat speel or gramer-checkered.

Updates . . .

The civicrm.views_default.inc is based on the Calendar module, version 7.x-1.x which has been completely abandoned due to the changes in Views 3.

Trying, as best I can given I'm not really familiar with this, to modify the civicrm.views_default.in to reflect the one in calendar.views_default.inc ; if you want to help, feel free. 

I have attached a diff file of my changes so far. I appear to be making progress. No solution yet, but moving forward.

-- Marcel

So here' the lay of the land.  Keep in mind you are using alpha code with Calendar and Date module, given that D7 depends on PHP5.2 the date module went through a massive rewrite.  So that said I would fully expect this to be a rocky road until those modules get stable (literally Date worked in alpha3 and broke in alpha4)


Concerning Date as of 7.x.2.0-alpha4 you have to pass ['is date'] => TRUE in the hook_views_data call (which is in the civicrm.views.inc file) for arguments and filters.  I'll submit a patch soon there.  This will expose the CiviCRM date fields to the Date API, which is the first step.


Sample to fix Date API
    //Scheduled Activity Date
    $data['civicrm_activity']['activity_date_time'] = array(
                                                            'title' => t('Scheduled Activity Date'),
                                                            'help' => t('The Date and Time the activity is scheduled to happen.'),
                                                            'field' => array(
                                                                             'handler' => 'civicrm_handler_field_datetime',
                                                                             'click sortable' => TRUE,
                                                                             ),

                                                            'filter' => array(
                                                                              'handler' => 'civicrm_handler_filter_datetime',
                                                                              'is date' => TRUE,
                                                                              ),

                                                            'sort' => array(
                                                                            'handler' => 'civicrm_handler_sort_date',
                                                                            ),
                                                            'argument' => array (
                                                                                'handler' => 'date_views_argument_handler',
                                                                                'empty field name' => t('Undated'),
                                                                                'is date' => TRUE,
                                                                                 ),
                                                            );
    civicrm_views_add_date_arguments($data['civicrm_activity'],array('title' =>'Scheduled Activity Date',
                                                                     'name' => 'activity_date_time'));
Calendar is a whole different story   I don't know for sure yet but it appears you now have to ship plugin handlers for each entity you want to to use the Calendar style/format (In D6 all you needed was Date API integration and Calendar was handled from there).  That or there is a setting somewhere where you tell Calendar Module that it needs to work with different CiviCRM based views.  I'm not 100% sure what this is gonna take, but I'ma little worried that Calendar is expecting Drupal Entities.  I believe models for this would be the calendar_views_plugins()  function an the calendar_plugin_row_node class that ship with the Calendar module (mind you this may be a simple cut and paste .

Until the Calander thing is fixed the messing with calendar.views_default.inc will be a dead end.

I'm finally getting a little bit of time to dive back in here

Adding the code below to civicrm.views.inc allows Calendar Items to be an option under Format/Show for CiviCRM event views (you need to wipe Drupal's cache, ie "drush cc all".  this is pointing to a new file /sites/all/modules/civicrm/drupal/modules/views/plugins/civicrm_event_plugin_row_node.inc which for now is a copy of calander_plugin_row_node.inc.  This is the plugin that tells Views what the heck to do with the data from CiviCRM. At this time is doesn't do a thing, as the source file is expecting Drupal nodes It's a small step but it's progress.
/**
 * Implements hook_views_plugins
 */
function civicrm_views_plugins() {
  $views_path = drupal_get_path('module', 'views');
  $civicrm_module_path = drupal_get_path('module', 'civicrm');

  $data = array(
    'row' => array(
      'civicrm_event_calendar' => array(
        'title' => t('Calendar Items'),
        'help' => t('Displays each selected node as a Calendar item.'),
        'handler' => 'civicrm_event_plugin_row_node',
        'path' => "$civicrm_module_path/modules/views/plugins",
        'base' => array('civicrm_event'),
        'uses options' => TRUE,
        'uses fields' => TRUE,
        'type' => 'normal',
      ),
    ),
  );
  return $data;
}


I just realized I forgot to mention pay particular attention to funky time zones, that has always been an issue with CiviCRM/Drupal integration