usage.rst

USAGE

Simple model view

# in your app models.py
from django.contrib.gis.db import models

class Feature(models.Model):
    geom = models.GeometryField(srid=4326)
    name = models.CharField(max_length=250)

# in your view file
from django.views.generic import ListView
from vectortiles.postgis.views import MVTView
from yourapp.models import Feature


class FeatureTileView(MVTView, ListView):
    model = Feature
    vector_tile_layer_name = "features"  # name for data layer in vector tile
    vector_tile_fields = ('name',)  # model fields or queryset annotates to include in tile
    # vector_tile_content_type = "application/x-protobuf"  # if you want to use custom content_type
    # vector_tile_queryset = None  # define a queryset for your features
    # vector_tile_queryset_limit = None  # as queryset could not be sliced, set here a limit for your features per tile
    # vector_tile_geom_name = "geom"  # geom field to consider in qs
    # vector_tile_extent = 4096  # tile extent
    # vector_tile_buffer = 256  # buffer around tile

# in your urls file
from django.urls import path
from yourapp import views


urlpatterns = [
    ...
    path('tiles/<int:z>/<int:x>/<int:y>', views.FeatureTileView.as_view(), name="feature-tile"),
    ...
]

Related model view

# in your app models.py
from django.contrib.gis.db import models


class Layer(models.Model):
    name = models.CharField(max_length=250)


class Feature(models.Model):
    geom = models.GeometryField(srid=4326)
    name = models.CharField(max_length=250)
    layer = models.ForeignKey(Layer, on_delete=models.CASCADE, related_name='features')

# in your views.py file
from django.views.generic import DetailView
from vectortiles.mixins import BaseVectorTileView
from vectortiles.postgis.views import MVTView
from yourapp.models import Layer


class LayerTileView(MVTView, DetailView):
    model = Layer
    vector_tile_fields = ('name', )

    def get_vector_tile_layer_name(self):
        return self.get_object().name

    def get_vector_tile_queryset(self):
        return self.get_object().features.all()

    def get(self, request, *args, **kwargs):
        self.object = self.get_object()
        return BaseVectorTileView.get(self,request=request, z=kwargs.get('z'), x=kwargs.get('x'), y=kwargs.get('y'))


# in your urls file
from django.urls import path
from yourapp import views


urlpatterns = [
    ...
    path('layer/<int:pk>/tile/<int:z>/<int:x>/<int:y>', views.LayerTileView.as_view(), name="layer-tile"),
    ...
]