Evita erro em migrate com BD vazio

sapl/base/forms.py

@@ -44,13 +44,11 @@ from sapl.utils import (autor_label, autor_modal, ChoiceWithoutValidationField,
 
 from .models import AppConfig, CasaLegislativa
 
-
 ACTION_CREATE_USERS_AUTOR_CHOICE = [
     ('A', _('Associar um usuário existente')),
     ('N', _('Autor sem Usuário de Acesso ao Sapl')),
 ]
 
-
 STATUS_USER_CHOICE = [
     ('R', _('Apenas retirar Perfil de Autor do Usuário que está sendo'
             ' desvinculado')),
@@ -61,7 +59,6 @@ STATUS_USER_CHOICE = [
 
 
 class UserAdminForm(ModelForm):
-
     is_active = forms.TypedChoiceField(label=_('Usuário Ativo'),
                                        choices=YES_NO_CHOICES,
                                        coerce=lambda x: x == 'True')
@@ -476,7 +473,6 @@ class SessaoLegislativaForm(FileFieldCheckMixin, ModelForm):
 
 
 class TipoAutorForm(ModelForm):
-
     class Meta:
         model = TipoAutor
         fields = ['descricao']
@@ -742,11 +738,16 @@ class AutorFilterSet(django_filters.FilterSet):
 
 
 def get_username():
-    return [(u, u) for u in get_user_model().objects.all().order_by('username').values_list('username', flat=True)]
+    try:
+        return [(u, u) for u in
+                get_user_model().objects.all().order_by('username').values_list('username', flat=True)]
+    except:
+        return []
 
 
 def get_models():
-    return [(m, m) for m in AuditLog.objects.distinct('model_name').order_by('model_name').values_list('model_name', flat=True)]
+    return [(m, m) for m in
+            AuditLog.objects.distinct('model_name').order_by('model_name').values_list('model_name', flat=True)]
 
 
 class AuditLogFilterSet(django_filters.FilterSet):
@@ -784,13 +785,11 @@ class AuditLogFilterSet(django_filters.FilterSet):
 
 
 class OperadorAutorForm(ModelForm):
-
     class Meta:
         model = OperadorAutor
         fields = ['user', ]
 
     def __init__(self, *args, **kwargs):
-
         row = to_row([('user', 12)])
 
         self.helper = SaplFormHelper()
@@ -827,7 +826,6 @@ class RelatorioDocumentosAcessoriosFilterSet(django_filters.FilterSet):
         fields = ['tipo', 'materia__tipo', 'data']
 
     def __init__(self, *args, **kwargs):
-
         super(
             RelatorioDocumentosAcessoriosFilterSet, self
         ).__init__(*args, **kwargs)
@@ -867,7 +865,6 @@ class RelatorioDocumentosAcessoriosFilterSet(django_filters.FilterSet):
 
 
 class RelatorioAtasFilterSet(django_filters.FilterSet):
-
     class Meta(FilterOverridesMetaMixin):
         model = SessaoPlenaria
         fields = ['data_inicio']
@@ -918,7 +915,6 @@ def ultimo_ano_com_norma():
 
 
 class RelatorioNormasMesFilterSet(django_filters.FilterSet):
-
     ano = django_filters.ChoiceFilter(required=True,
                                       label='Ano da Norma',
                                       choices=choice_anos_com_normas,
@@ -970,7 +966,6 @@ class RelatorioNormasMesFilterSet(django_filters.FilterSet):
 
 
 class EstatisticasAcessoNormasForm(Form):
-
     ano = forms.ChoiceField(required=True,
                             label='Ano de acesso',
                             choices=RANGE_ANOS,
@@ -1034,7 +1029,6 @@ class EstatisticasAcessoNormasForm(Form):
 
 
 class RelatorioNormasVigenciaFilterSet(django_filters.FilterSet):
-
     ano = django_filters.ChoiceFilter(required=True,
                                       label='Ano da Norma',
                                       choices=choice_anos_com_normas,
@@ -1091,7 +1085,6 @@ class RelatorioNormasVigenciaFilterSet(django_filters.FilterSet):
 
 
 class RelatorioPresencaSessaoFilterSet(django_filters.FilterSet):
-
     class Meta(FilterOverridesMetaMixin):
         model = SessaoPlenaria
         fields = ['data_inicio',
@@ -1158,7 +1151,6 @@ class RelatorioPresencaSessaoFilterSet(django_filters.FilterSet):
 
 
 class RelatorioHistoricoTramitacaoFilterSet(django_filters.FilterSet):
-
     autoria__autor = django_filters.CharFilter(widget=forms.HiddenInput())
 
     @property
@@ -1225,7 +1217,6 @@ class RelatorioHistoricoTramitacaoFilterSet(django_filters.FilterSet):
 
 
 class RelatorioDataFimPrazoTramitacaoFilterSet(django_filters.FilterSet):
-
     ano = django_filters.ChoiceFilter(required=False,
                                       label='Ano da Matéria',
                                       choices=choice_anos_com_materias)
@@ -1372,7 +1363,6 @@ class RelatorioAudienciaFilterSet(django_filters.FilterSet):
 
 
 class RelatorioMateriasTramitacaoFilterSet(django_filters.FilterSet):
-
     materia__ano = django_filters.ChoiceFilter(required=True,
                                                label='Ano da Matéria',
                                                choices=choice_anos_com_materias)
@@ -1438,7 +1428,6 @@ class RelatorioMateriasTramitacaoFilterSet(django_filters.FilterSet):
 
 
 class RelatorioMateriasPorAnoAutorTipoFilterSet(django_filters.FilterSet):
-
     ano = django_filters.ChoiceFilter(required=True,
                                       label='Ano da Matéria',
                                       choices=choice_anos_com_materias)
@@ -1478,7 +1467,6 @@ class RelatorioMateriasPorAnoAutorTipoFilterSet(django_filters.FilterSet):
 
 
 class RelatorioMateriasPorAutorFilterSet(django_filters.FilterSet):
-
     autoria__autor = django_filters.CharFilter(widget=forms.HiddenInput())
 
     @property
@@ -1535,7 +1523,6 @@ class RelatorioMateriasPorAutorFilterSet(django_filters.FilterSet):
 
 
 class CasaLegislativaForm(FileFieldCheckMixin, ModelForm):
-
     class Meta:
 
         model = CasaLegislativa
@@ -1690,18 +1677,15 @@ class ConfiguracoesAppForm(ModelForm):
 
 
 class RecuperarSenhaForm(GoogleRecapthaMixin, PasswordResetForm):
-
     logger = logging.getLogger(__name__)
 
     def __init__(self, *args, **kwargs):
-
         kwargs['title_label'] = _('Insira o e-mail cadastrado com a sua conta')
         kwargs['action_label'] = _('Enviar')
 
         super().__init__(*args, **kwargs)
 
     def clean(self):
-
         super(RecuperarSenhaForm, self).clean()
 
         email_existente = get_user_model().objects.filter(
@@ -1825,7 +1809,6 @@ class AlterarSenhaForm(Form):
 
 
 class PartidoForm(FileFieldCheckMixin, ModelForm):
-
     class Meta:
         model = Partido
         exclude = []
@@ -1924,7 +1907,6 @@ class RelatorioHistoricoTramitacaoAdmFilterSet(django_filters.FilterSet):
 
 
 class RelatorioNormasPorAutorFilterSet(django_filters.FilterSet):
-
     autorianorma__autor = django_filters.CharFilter(widget=forms.HiddenInput())
 
     @property