✨ Allow to store layer's expression filters (authenticathed users)

g3w-admin/qdjango/admin.py

@@ -101,6 +101,16 @@ class SessionTokenFilterAdmin(admin.ModelAdmin):
     ]
 
 
+@admin.register(FilterLayerSaved)
+class FilterLayerSavedAdmin(admin.ModelAdmin):
+    list_display = (
+        'user',
+        'layer',
+        'qgs_expr',
+        'created',
+        'modified',
+    )
+
 class QgisAuthAdminForm(ModelForm):
 
     username = CharField()

g3w-admin/qdjango/api/layers/serializers.py

@@ -10,7 +10,7 @@
 __date__ = '2020-05-06'
 __copyright__ = 'Copyright 2015 - 2020, Gis3w'
 
-from qdjango.models import Layer
+from qdjango.models import Layer, FilterLayerSaved
 from rest_framework import serializers
 from usersmanage.models import User, Group as AuthGroup
 
@@ -36,3 +36,23 @@ class Meta:
         fields = ['pk', 'name']
 
 
+class FilterLayerSavedSerializer(serializers.ModelSerializer):
+
+    class Meta:
+        model = FilterLayerSaved
+        fields = (
+            'id',
+            'name',
+        )
+
+    def to_representation(self, instance):
+
+        ret = super().to_representation(instance)
+
+        # Change pk(id) with fid
+        del(ret['id'])
+        ret['fid'] = instance.pk
+
+        return ret
+
+

g3w-admin/qdjango/api/projects/serializers.py

@@ -4,12 +4,21 @@
 from rest_framework import serializers
 from rest_framework.fields import empty
 from owslib.wms import WebMapService
-from qdjango.models import Project, Layer, Widget, SessionTokenFilter, GeoConstraintRule, MSG_LEVELS
+from qdjango.models import (
+    Project,
+    Layer,
+    Widget,
+    SessionTokenFilter,
+    GeoConstraintRule,
+    MSG_LEVELS,
+    FilterLayerSaved
+)
 from qdjango.utils.data import QGIS_LAYER_TYPE_NO_GEOM
 from qdjango.utils.models import get_capabilities4layer, get_view_layer_ids
 from qdjango.signals import load_qdjango_widget_layer
 from qdjango.apps import get_qgs_project
 from qdjango.utils.structure import QdjangoMetaLayer, datasourcearcgis2dict
+from qdjango.api.layers.serializers import FilterLayerSavedSerializer
 from core.utils.structure import mapLayerAttributes
 from core.configs import *
 from core.signals import after_serialized_project_layer
@@ -412,6 +421,16 @@ def to_representation(self, instance):
         meta_layer = QdjangoMetaLayer()
         to_remove_from_layerstree = []
 
+        # Get FilterToken layer filters saved:
+        # Build a layer_filters dict to pass FilterLayerSaved instance to LayerSerializer
+        layer_filters = {}
+        filters = FilterLayerSaved.objects.filter(user=self.request.user, layer__project=instance)
+        for f in filters:
+            if f.layer.qgs_layer_id not in layer_filters:
+                layer_filters[f.layer.qgs_layer_id] = []
+            layer_filters[f.layer.qgs_layer_id].append(f)
+
+
         def readLeaf(layer, container):
 
             if 'nodes' in layer:
@@ -431,7 +450,12 @@ def readLeaf(layer, container):
 
                 try:
                     layer_serialized = LayerSerializer(
-                        layers[layer['id']], qgs_project=qgs_project, request=self.request, layertreenode=layer)
+                        layers[layer['id']],
+                        qgs_project=qgs_project,
+                        request=self.request,
+                        layertreenode=layer,
+                        filters=layer_filters[layer['id']] if layer['id'] in layer_filters else []
+                    )
                 except KeyError:
                     logger.error(
                         'Layer %s is missing from QGIS project!' % layer['id'])
@@ -600,6 +624,10 @@ def __init__(self, instance=None, data=empty, **kwargs):
         self.layertreenode = kwargs['layertreenode']
         del (kwargs['layertreenode'])
 
+        # FilterLayerSaved
+        self.filters = kwargs['filters']
+        del (kwargs['filters'])
+
         super(LayerSerializer, self).__init__(instance, data, **kwargs)
 
     class Meta:
@@ -849,6 +877,13 @@ def to_representation(self, instance):
         if 'showfeaturecount' in self.layertreenode and self.layertreenode['showfeaturecount']:
             ret['featurecount'] = get_qgis_featurecount(qgs_maplayer)
 
+
+        # Set FilterLayerSaved instances
+        if len(self.filters) > 0:
+            ret['filters'] = []
+            for f in self.filters:
+                ret['filters'].append(FilterLayerSavedSerializer(f).data)
+
         return ret
 
 

g3w-admin/qdjango/migrations/0109_filterlayersaved.py

@@ -0,0 +1,29 @@
+# Generated by Django 3.2.20 on 2023-10-13 15:07
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+import model_utils.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('qdjango', '0108_alter_layer_slug'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='FilterLayerSaved',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created', model_utils.fields.AutoCreatedField(default=django.utils.timezone.now, editable=False, verbose_name='created')),
+                ('modified', model_utils.fields.AutoLastModifiedField(default=django.utils.timezone.now, editable=False, verbose_name='modified')),
+                ('qgs_expr', models.TextField()),
+                ('layer', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='qdjango.layer')),
+                ('user', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.DO_NOTHING, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

g3w-admin/qdjango/migrations/0110_sessiontokenfilterlayer_name.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.20 on 2023-10-16 12:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('qdjango', '0109_filterlayersaved'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='sessiontokenfilterlayer',
+            name='name',
+            field=models.TextField(null=True),
+        ),
+    ]

g3w-admin/qdjango/migrations/0111_alter_sessiontokenfilterlayer_name.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.20 on 2023-10-16 13:06
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('qdjango', '0110_sessiontokenfilterlayer_name'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='sessiontokenfilterlayer',
+            name='name',
+            field=models.TextField(null=True, unique=True),
+        ),
+    ]

g3w-admin/qdjango/migrations/0112_auto_20231017_0752.py

@@ -0,0 +1,22 @@
+# Generated by Django 3.2.20 on 2023-10-17 07:52
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('qdjango', '0111_alter_sessiontokenfilterlayer_name'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='sessiontokenfilterlayer',
+            name='name',
+        ),
+        migrations.AddField(
+            model_name='filterlayersaved',
+            name='name',
+            field=models.TextField(null=True, unique=True),
+        ),
+    ]

g3w-admin/qdjango/migrations/0113_auto_20231019_1237.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.2.20 on 2023-10-19 12:37
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('qdjango', '0112_auto_20231017_0752'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='filterlayersaved',
+            name='name',
+            field=models.TextField(null=True),
+        ),
+        migrations.AlterUniqueTogether(
+            name='filterlayersaved',
+            unique_together={('user', 'layer', 'name')},
+        ),
+    ]

g3w-admin/qdjango/models/filters.py

@@ -14,6 +14,7 @@
 from django.db import models
 from django.utils.http import int_to_base36
 from django.utils.crypto import salted_hmac
+from model_utils.models import TimeStampedModel
 from usersmanage.models import User
 from .projects import Layer
 from datetime import datetime
@@ -86,12 +87,29 @@ class Meta:
 
 class SessionTokenFilterLayer(models.Model):
     """
-    Model to save qgis espresion for layer by session token filter.
+    Model to save qgis expression for layer by session token filter.
     """
 
     session_token_filter = models.ForeignKey(SessionTokenFilter, on_delete=models.CASCADE, related_name='stf_layers')
     layer = models.ForeignKey(Layer, on_delete=models.CASCADE)
     qgs_expr = models.TextField()
 
+
     class Meta:
         app_label = 'qdjango'
+
+
+class FilterLayerSaved(TimeStampedModel):
+    """
+    Model to save qgis expression for layer by user.
+    """
+
+    user = models.ForeignKey(User, null=True, blank=True, on_delete=models.DO_NOTHING)
+    layer = models.ForeignKey(Layer, on_delete=models.CASCADE)
+    qgs_expr = models.TextField()
+    name = models.TextField(null=True)
+
+    class Meta:
+        app_label = 'qdjango'
+        unique_together = ['user', 'layer', 'name']
+