diff --git a/sapl/api/core/__init__.py b/sapl/api/core/__init__.py
index 767deadcb..438b993a8 100644
--- a/sapl/api/core/__init__.py
+++ b/sapl/api/core/__init__.py
@@ -129,7 +129,7 @@ class SaplApiViewSetConstrutor():
                     class Meta(_meta_filterset):
                         if not hasattr(_meta_filterset, 'model'):
                             model = _model
-
+                            
                 # Define uma classe padrão ModelViewSet de DRF
                 class ModelSaplViewSet(SaplApiViewSetConstrutor.SaplApiViewSet):
                     queryset = _model.objects.all()
diff --git a/sapl/api/core/filters.py b/sapl/api/core/filters.py
index 21493f72c..cc4a601c1 100644
--- a/sapl/api/core/filters.py
+++ b/sapl/api/core/filters.py
@@ -1,10 +1,16 @@
-from django.db.models.fields import CharField
+
+from collections import OrderedDict
+
+from django.conf import settings
+from django.db.models.fields import DateTimeField, DateField
 from django.db.models.fields.files import FileField
 from django.template.defaultfilters import capfirst
 import django_filters
+from django_filters.constants import ALL_FIELDS
 from django_filters.filters import CharFilter
-from django_filters.rest_framework.filterset import FilterSet
-from django_filters.utils import resolve_field
+from django_filters.filterset import BaseFilterSet, FilterSetMetaclass, \
+    FilterSet
+from django_filters.utils import resolve_field, get_all_model_fields
 
 
 class SaplFilterSetMixin(FilterSet):
@@ -14,12 +20,6 @@ class SaplFilterSetMixin(FilterSet):
     class Meta:
         fields = '__all__'
         filter_overrides = {
-            CharField: {
-                'filter_class': django_filters.CharFilter,
-                'extra': lambda f: {
-                    'lookup_expr': ['exact', 'icontains']
-                }
-            },
             FileField: {
                 'filter_class': django_filters.CharFilter,
                 'extra': lambda f: {
@@ -35,6 +35,55 @@ class SaplFilterSetMixin(FilterSet):
         except:
             return queryset
 
+    @classmethod
+    def get_fields(cls):
+        model = cls._meta.model
+        fields_model = get_all_model_fields(model)
+        fields_filter = cls._meta.fields
+        exclude = cls._meta.exclude
+
+        if exclude is not None and fields_filter is None:
+            fields_filter = ALL_FIELDS
+
+        fields = fields_filter if isinstance(fields_filter, dict) else {}
+        if not isinstance(fields_filter, (dict, str)):
+            for f in fields_filter:
+                fields[f] = ['exact']
+
+        for f_str in fields_model:
+            if f_str not in fields:
+                f = model._meta.get_field(f_str)
+                fields[f_str] = []
+
+                def get_keys_lookups(cl, sub_f):
+                    r = []
+                    for lk, lv in cl.items():
+                        if lk == 'contained_by':
+                            continue
+                        sflk = f'{sub_f}{"__" if sub_f else ""}{lk}'
+                        r.append(sflk)
+
+                        if hasattr(lv, 'class_lookups'):
+                            r += get_keys_lookups(lv.class_lookups, sflk)
+
+                        if hasattr(lv, 'output_field'):
+                            r.append(f'{sflk}{"__" if sflk else ""}range')
+
+                            r += get_keys_lookups(lv.output_field.class_lookups, sflk)
+
+                    return r
+
+                fields[f_str] = list(
+                    set(get_keys_lookups(f.class_lookups, '')))
+
+        # Remove excluded fields
+        exclude = exclude or []
+
+        fields = [(f, lookups)
+                  for f, lookups in fields.items() if f not in exclude]
+
+        return OrderedDict(fields)
+
     @classmethod
     def filter_for_field(cls, f, name, lookup_expr='exact'):
         # Redefine método estático para ignorar filtro para
diff --git a/sapl/api/forms.py b/sapl/api/forms.py
index 475d3ca26..e1b293fbc 100644
--- a/sapl/api/forms.py
+++ b/sapl/api/forms.py
@@ -1,22 +1,8 @@
 
-
-from django_filters.filters import NumberFilter
-
 from sapl.api.core.filters import SaplFilterSetMixin
 from sapl.sessao.models import SessaoPlenaria
 
 
 class SessaoPlenariaFilterSet(SaplFilterSetMixin):
-    year = NumberFilter(method='filter_year')
-    month = NumberFilter(method='filter_month')
-
     class Meta(SaplFilterSetMixin.Meta):
         model = SessaoPlenaria
-
-    def filter_year(self, queryset, name, value):
-        qs = queryset.filter(data_inicio__year=value)
-        return qs
-
-    def filter_month(self, queryset, name, value):
-        qs = queryset.filter(data_inicio__month=value)
-        return qs