diff --git a/ups_management/ups_manager/forms.py b/ups_management/ups_manager/forms.py
index 78d60df..679f234 100644
--- a/ups_management/ups_manager/forms.py
+++ b/ups_management/ups_manager/forms.py
@@ -4,6 +4,13 @@ from .models import UPSHost, Battery
 
 
 class UPSHostForm(forms.ModelForm):
+    last_maintenance_date = forms.DateField(
+        required=False,
+        label='上次维保时间',
+        input_formats=['%Y-%m-%d'],
+        widget=forms.DateInput(attrs={'class': 'form-control datepicker', 'placeholder': '选择日期'}, format='%Y-%m-%d'),
+    )
+
     class Meta:
         model = UPSHost
         fields = ['brand', 'model', 'ip_address', 'quantity', 'location', 'last_maintenance_date', 'contact']
@@ -13,7 +20,6 @@ class UPSHostForm(forms.ModelForm):
             'ip_address': 'IP地址',
             'quantity': '数量',
             'location': '存放位置',
-            'last_maintenance_date': '上次维保时间',
             'contact': '联系人',
         }
         widgets = {
@@ -22,7 +28,6 @@ class UPSHostForm(forms.ModelForm):
             'ip_address': forms.TextInput(attrs={'class': 'form-control'}),
             'quantity': forms.NumberInput(attrs={'class': 'form-control', 'min': '1'}),
             'location': forms.TextInput(attrs={'class': 'form-control'}),
-            'last_maintenance_date': forms.DateInput(attrs={'class': 'form-control datepicker', 'type': 'text'}),
             'contact': forms.Select(attrs={'class': 'form-control'}),
         }
 
diff --git a/ups_management/ups_manager/views.py b/ups_management/ups_manager/views.py
index a40cff0..6808933 100644
--- a/ups_management/ups_manager/views.py
+++ b/ups_management/ups_manager/views.py
@@ -119,14 +119,13 @@ class UPSHostUpdateView(UpdateView):
     
     def form_valid(self, form):
         self.object = form.save()
-        
-        if self.request.POST:
-            battery_formset = BatteryFormSet(self.request.POST, instance=self.object)
-            if battery_formset.is_valid():
-                battery_formset.save()
-        
+        context = self.get_context_data()
+        battery_formset = context['battery_formset']
+        if battery_formset.is_valid():
+            battery_formset.instance = self.object
+            battery_formset.save()
         messages.success(self.request, 'UPS主机和电池信息已更新')
-        return super().form_valid(form)
+        return redirect(self.success_url)
 
 
 class UPSHostDeleteView(DeleteView):
@@ -255,7 +254,7 @@ class SupplierDeleteView(DeleteView):
     success_url = reverse_lazy('supplier_list')
 
 
-class MaintenanceRecordListView(ListView):
+class MaintenanceListView(ListView):
     model = MaintenanceRecord
     template_name = 'ups_manager/maintenance_list.html'
     context_object_name = 'maintenance_list'
@@ -263,35 +262,32 @@ class MaintenanceRecordListView(ListView):
 
     def get_queryset(self):
         queryset = super().get_queryset()
-        ups_model = self.request.GET.get('ups_model')
+        ups_host = self.request.GET.get('ups_host')
         technician = self.request.GET.get('technician')
-        supplier = self.request.GET.get('supplier')
         
-        if ups_model:
-            queryset = queryset.filter(ups_host__model__icontains=ups_model)
+        if ups_host:
+            queryset = queryset.filter(ups_host__model__icontains=ups_host)
         if technician:
             queryset = queryset.filter(technician__icontains=technician)
-        if supplier:
-            queryset = queryset.filter(supplier__company_name__icontains=supplier)
         
         return queryset.order_by('-maintenance_date')
 
 
-class MaintenanceRecordCreateView(CreateView):
+class MaintenanceCreateView(CreateView):
     model = MaintenanceRecord
     template_name = 'ups_manager/maintenance_form.html'
-    fields = ['ups_host', 'battery', 'supplier', 'maintenance_date', 'content', 'technician']
+    fields = ['ups_host', 'battery', 'supplier', 'maintenance_date', 'technician', 'content']
     success_url = reverse_lazy('maintenance_list')
 
 
-class MaintenanceRecordUpdateView(UpdateView):
+class MaintenanceUpdateView(UpdateView):
     model = MaintenanceRecord
     template_name = 'ups_manager/maintenance_form.html'
-    fields = ['ups_host', 'battery', 'supplier', 'maintenance_date', 'content', 'technician']
+    fields = ['ups_host', 'battery', 'supplier', 'maintenance_date', 'technician', 'content']
     success_url = reverse_lazy('maintenance_list')
 
 
-class MaintenanceRecordDeleteView(DeleteView):
+class MaintenanceDeleteView(DeleteView):
     model = MaintenanceRecord
     template_name = 'ups_manager/maintenance_confirm_delete.html'
     success_url = reverse_lazy('maintenance_list')