$note->text()->toBlocks()->excerpt(280) does not output what i expected

Kirby 3 Solved ✅
1

OK, i have writen my first plugin. I can display with the plugin a leaflet map with an gpx track.
The bleuprint of the page contains this field:

    fields:
      subheading:
        type: text
      tripname:
        label: Reise
        type: select
        options: query
        query: site.children.listed.template('trips').children
      text:
        type: blocks
        fieldsets:
          text:
            label: Text
            type: group
            fieldsets:
              - heading
              - text
              - list
              - quote
          additional:
            label: Zusatz
            type: group
            fieldsets:
              - line
              - gpxtrackleaflet
          media:
            label: Media
            type: group
            fieldsets:              
              - image
              - gallery
              - video

gpxtrackleaflet is the block of my plugin.

This is the PHP Code from gpxtrackleaflet.php. This shows the map with the gpx track.

<?php if($block->gpxtrack()->isNotEmpty()): ?>
    <div class="wrapper">
        <div class="kirby-leafleat-map">
            <div id="map"></div>
        </div>

    <script>
        if (map != undefined) { map.remove(); } 
        var map = L.map('map').setView([51.505, -0.09], 13);

        var tiles = L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
            maxZoom: 19,
            attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
        }).addTo(map);

        var gpx = '<?= $block->gpxtrack()->toFile()->url() ?>'; // URL to your GPX file or the GPX itself
        new L.GPX(gpx, {
            async: true,
            marker_options: {
                startIconUrl: '/assets/js/leaflet-gpx/pin-icon-start.png',
                endIconUrl: '/assets/js/leaflet-gpx/pin-icon-end.png',
                shadowUrl: '/assets/js/leaflet-gpx/pin-shadow.png'
            }
        }).on('loaded', function(e) {
        map.fitBounds(e.target.getBounds());
        }).addTo(map);
    </script>    
    </div>
<?php endif; ?>

now, when i use $note->text()->toBlocks()->excerpt(280) to output an excerpt of the page, and the first block of the page is an gpx track, i can see this - that’s the content of the script in my gpxtrackleaflet.php file
Auswahl_023

Can i control the output? The excerpt should be created from the first block of text

Martin

2

You can filter your blocks by type, grab the first and create the excerpt from that:

$note->text()->toBlocks()->filterBy('type', 'text')->first()->excerpt(280);
1 Like
3

argh, ok the solution is simple. I’ll try it tonight.
Sorry, could I have found that in the documentation myself?
Thank you for your quick response. I get the feeling you’re on the forum 24/7 to help us.

Martin

4

Well, yes, but not as an answer to such an isolated question. It needs some looking in multiple places.

  1. I want to get only text blocks => ok, I need a way to filter them, how can I do that, let’s look at the blocks object.
  2. I want to get only the first item => ok, I need to limit the output, again what methods does the blocks object have there for me
  3. Then last step, apply the excerpt.
5

I am facing a similar problem but the proposed solution seems to not be working for me.

I just created a field of type blocks:

fields:
        type: fields
        fields:
          text:
            type: blocks
            fieldsets:
              - text
              - image

And I am trying to get an excerpt from the first text

$item->text()->toBlocks()->filterBy('type', 'text')->first();

The line above properly return the first text block from the field.

$item->text()->toBlocks()->filterBy('type', 'text')->first()->excerpt(80);

But when I add the excerpt function it doesn’t work saying that it is calling to a function on null.

Am I missing any step?

6

Giving that you seem to be in a loop, if one of the pages doesn’t have a text blocks, this will indeed fail with the given error message.

Use the null-safe operator in this case instead:

$item->text()->toBlocks()->filterBy('type', 'text')->first()?->excerpt(80);

Or wrap the code in an if statement, making sure you have a field before calling excerpt.

1 Like
7

Ah you were completely right. It worked perfectly, Thank you!