Leaflet Views shows blank data

Hi I had the same problem, incompatibility with the new version of Views.

Just created this patch that try to fix this issue - pb for me when using the Leaflet map (old) Settings

I think this is a duplicate of https://www.drupal.org/node/2839538

esp https://www.drupal.org/files/issues/leaflet-recognize_geofield-2839538.p... ?

Hi... I have the exact same problem.

As I can see, the problem is that the "Features" array is beeing rendered empty on the js output, as the code bellow.

"options":{"attribution":"OSM Mapnik"}}}},"features":[]}},

I realized that when we get to the "render()" function in leaflet_views\src\Plugin\views\style\Leaflet.php the object "$this->view->attachment_before" is empty.

I just don't know where it's beeing populated. :(

just for note, in order to show the markers on the map I've changed temporarily, in leaflet_views\src\Plugin\views\style\Leaflet.php, this code:

    foreach ($this->view->attachment_before as $id => $attachment) {
      if (!empty($attachment['#leaflet-attachment'])) {
        $features = array_merge($features, $attachment['rows']);
        $this->view->element['#attached'] = NestedArray::mergeDeep($this->view->element['#attached'], $attachment['#attached']);
        unset($this->view->attachment_before[$id]);
      }
    }

for this:

    $res = func_get_args()[0];
    $features = array();
    foreach ($res as $id => $attachment) {
      array_push($features, array("type" => strtolower($attachment->_entity->field_geofield->geo_type),"lat" => $attachment->_entity->field_geofield->lat,"lon" => $attachment->_entity->field_geofield->lon,"popup" => $attachment->_entity->title->value));
    }

The patch seems to be working for me.
Thanks.

The patch will not apply to the 1.x-dev branch.

Gathering patches for dependencies. This might take a minute.
  - Installing drupal/leaflet (dev-1.x da0386d): Cloning da0386d509 from cache
  - Applying patches for drupal/leaflet
    https://www.drupal.org/files/issues/leaflet-recognize_geofield-2839538.patch (LeafletMarker could not recognize geofield)
    https://www.drupal.org/files/issues/2902898-fix.patch (Leaflet not compatible with new version of Views)
   Could not apply patch! Skipping. The error was: Cannot apply patch https://www.drupal.org/files/issues/2902898-fix.patch

This is what I get from 'composer update drupal/leaflet'

Any ideas?

EDIT - I tried just using the patch from this issue (as it seems like the patch for the Leaflet MarkerCluster issue is mostly the same) and it still doesn't work. I just get a map that shows the entire world, no markers, despite my filtered nodes having a geolocation field. Is it correct that there is only basic settings for 'Leaflet" such as map type and size? "Leaflet (Old)" has much more indepth settings....

Hi,@paul_canning.

I have patched for leaflet dev-1.x.
My environment is geofield.
You may have to look for some problems in the geolocation field.
https://www.drupal.org/project/issues/geolocation?text=&status=Open&prio...

OSM maplink views quickly with marker cluster, but some more map type views blank or so slowly.
I installed marker cluster is dev-1.x.
I can't imagine the cause.

You should reinstall modules are geolocation field, leaflet as developer version and appropriate javascript libraries, then you try to apply some appropriate patches to them.

Try rebuild.

Duplicate of #2839538