# 61 Filter backend

* refactors XYTableFilter classes to hold query_filter and checkbox_filter which are separate instances of django_filter.FilterSets
* improves render ability for frontend

compensation/filters.py

@@ -10,15 +10,11 @@ from django.utils.translation import gettext_lazy as _
 from django import forms
 from django.db.models import QuerySet
 
-from konova.filters import AbstractTableFilter, GeoReferencedTableFilterMixin, ShareableTableFilterMixin, \
-    RecordableTableFilterMixin
+from konova.filters import QueryTableFilter, CheckboxTableFilter
 
 
-class CompensationTableFilter(AbstractTableFilter, GeoReferencedTableFilterMixin, ShareableTableFilterMixin, RecordableTableFilterMixin):
-    """ TableFilter for compensations
-
-    Based widely on InterventionTableFilter.
-    Just some minor changes for Compensation model.
+class CheckboxCompensationTableFilter(CheckboxTableFilter):
+    """ Specialization of regular CheckboxTableFilter for compensation model
 
     """
 
@@ -59,12 +55,36 @@ class CompensationTableFilter(AbstractTableFilter, GeoReferencedTableFilterMixin
             return queryset
 
 
-class EcoAccountTableFilter(AbstractTableFilter, GeoReferencedTableFilterMixin, ShareableTableFilterMixin, RecordableTableFilterMixin):
-    """ TableFilter for eco accounts
+class CompensationTableFilter:
+    """ TableFilter for compensations
 
-    Just some minor changes for EcoAccount model.
+    Based widely on InterventionTableFilter.
+    Just some minor changes for Compensation model.
 
     """
+    query_filter = None
+    checkbox_filter = None
+    qs = None
+
+    def __init__(self, *args, **kwargs):
+        user = kwargs.get("user", None)
+        qs = kwargs.get("queryset", None)
+        request_data = kwargs.get("data", None)
+
+        self.query_filter = QueryTableFilter(
+            user=user,
+            data=request_data,
+            queryset=qs,
+        )
+        self.checkbox_filter = CheckboxCompensationTableFilter(
+            user=user,
+            data=request_data,
+            queryset=self.query_filter.qs,
+        )
+        self.qs = self.checkbox_filter.qs
+
+
+class CheckboxEcoAccountTableFilter(CheckboxTableFilter):
     sr = django_filters.BooleanFilter(
         method='filter_only_show_unrecorded',
         label=_("Show only unrecorded"),
@@ -107,3 +127,29 @@ class EcoAccountTableFilter(AbstractTableFilter, GeoReferencedTableFilterMixin,
             )
         else:
             return queryset
+
+
+class EcoAccountTableFilter:
+    """ TableFilter for eco accounts
+
+    """
+    query_filter = None
+    checkbox_filter = None
+    qs = None
+
+    def __init__(self, *args, **kwargs):
+        user = kwargs.get("user", None)
+        qs = kwargs.get("queryset", None)
+        request_data = kwargs.get("data", None)
+
+        self.query_filter = QueryTableFilter(
+            user=user,
+            data=request_data,
+            queryset=qs,
+        )
+        self.checkbox_filter = CheckboxEcoAccountTableFilter(
+            user=user,
+            data=request_data,
+            queryset=self.query_filter.qs,
+        )
+        self.qs = self.checkbox_filter.qs

intervention/filters.py

@@ -5,19 +5,27 @@ Contact: michel.peltriaux@sgdnord.rlp.de
 Created on: 22.07.21
 
 """
-from intervention.models import Intervention
-from konova.filters import AbstractTableFilter, GeoReferencedTableFilterMixin, ShareableTableFilterMixin, \
-    RecordableTableFilterMixin
+from konova.filters import QueryTableFilter, CheckboxTableFilter
 
 
-class InterventionTableFilter(AbstractTableFilter, GeoReferencedTableFilterMixin, ShareableTableFilterMixin, RecordableTableFilterMixin):
-    """ TableFilter for Intervention model
-
-    """
-
-    class Meta:
-        model = Intervention
-        fields = []
+class InterventionTableFilter:
+    query_filter = None
+    checkbox_filter = None
+    qs = None
 
     def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
+        user = kwargs.get("user", None)
+        qs = kwargs.get("queryset", None)
+        request_data = kwargs.get("data", None)
+
+        self.query_filter = QueryTableFilter(
+            user=user,
+            data=request_data,
+            queryset=qs,
+        )
+        self.checkbox_filter = CheckboxTableFilter(
+            user=user,
+            data=request_data,
+            queryset=self.query_filter.qs,
+        )
+        self.qs = self.checkbox_filter.qs

konova/filters.py

@@ -19,8 +19,17 @@ class AbstractTableFilter(django_filters.FilterSet):
     """ TableFilter for Intervention model
 
     """
+    class Meta:
+        abstract = True
+
+    def __init__(self, user: User, *args, **kwargs):
+        self.user = user
+        super().__init__(*args, **kwargs)
+
+
+class KeywordTableFilterMixin(django_filters.FilterSet):
     q = django_filters.Filter(
-        method='_filter_by_keyword',
+        method='filter_by_keyword',
         # Since we use a custom search bar in the template, we need to 'render' this filter
         # as 'anonymous' HiddenInput (no id, no name). This way our custom search bar's id and name won't be
         # overwritten with these id and name (which would be equal)
@@ -31,11 +40,7 @@ class AbstractTableFilter(django_filters.FilterSet):
     class Meta:
         abstract = True
 
-    def __init__(self, user: User, *args, **kwargs):
-        self.user = user
-        super().__init__(*args, **kwargs)
-
-    def _filter_by_keyword(self, queryset, name, value) -> QuerySet:
+    def filter_by_keyword(self, queryset, name, value) -> QuerySet:
         """ Filters queryset depending on value of search bar input
 
         Args:
@@ -309,3 +314,17 @@ class RecordableTableFilterMixin(django_filters.FilterSet):
             )
         else:
             return queryset
+
+
+class QueryTableFilter(AbstractTableFilter, KeywordTableFilterMixin, GeoReferencedTableFilterMixin):
+    """ TableFilter holding different filter options for query related filtering
+
+    """
+    pass
+
+
+class CheckboxTableFilter(AbstractTableFilter, ShareableTableFilterMixin, RecordableTableFilterMixin):
+    """ TableFilter holding different filter options for checkbox related filtering
+
+    """
+    pass

templates/generic_index.html

@@ -41,7 +41,7 @@
             <div class="row my-1">
                 <div class="col-sm-12 col-md-8 col-lg-6">
                         <div class="input-group">
-                            <input id="id_{{table.filter.filters.q.field_name}}" name="{{table.filter.filters.q.field_name}}" type="text" class="form-control" aria-label="{% trans 'Search for keywords' %}" placeholder="{% trans 'Search' %}" value="{{ request.GET.q }}">
+                            <input id="id_{{table.filter.query_filter.filters.q.field_name}}" name="{{table.filter.query_filter.filters.q.field_name}}" type="text" class="form-control" aria-label="{% trans 'Search for keywords' %}" placeholder="{% trans 'Search' %}" value="{{ request.GET.q }}">
                             <div class="input-group-append" title="{% trans 'Start search' %}">
                                 <button type="submit" class="btn btn-default input-group-text">
                                     <span class="">
@@ -82,11 +82,18 @@
                         </div>
                         <div id="filter" class="collapse" aria-labelledby="filterHeader">
                             <div class="card-body">
-                                    {{ table.filter.form.as_p }}
+                                <div class="row">
+                                    {{table.filter.query_filter.form.as_p}}
+                                </div>
+                                <div class="row">
+                                    {{table.filter.checkbox_filter.form.as_p}}
+                                </div>
+                                <div class="row">
                                     <button class="btn btn-default" title="{% trans 'Filter' %}">
                                         {% fa5_icon 'filter' %}
                                         {% trans 'Apply filter' %}
                                     </button>
+                                </div>
                             </div>
                         </div>
                     </div>