Ajouter param sur form VHC_info

* Ajouter la possibilité de pré-remplir véhicule dans formulaire ajout VHC_info #17

vehicles/admin.py

@@ -1,3 +1,4 @@
+from django import forms
 from django.contrib import admin
 from django.contrib.auth.models import User
 
@@ -30,7 +31,17 @@ class _vhc_admin(admin.ModelAdmin):
         }),
     )
 
+class _vhc_infos_admin_form(forms.ModelForm):
+    class Meta:
+        model = Vehicles_infos
+        fields = '__all__'
+
+    def __init__(self, *args, **kwargs):
+        super(_vhc_infos_admin_form, self).__init__(*args, **kwargs)
+        if 'initial' in kwargs and 'Vehicle' in kwargs['initial']:
+            self.fields['Vehicle'].queryset = Vehicles.objects.filter(id=kwargs['initial']['Vehicle'])
 class _vhc_infos_admin(admin.ModelAdmin):
+    form = _vhc_infos_admin_form
     always_show_username = True
     save_as = True
     list_display = ('Vehicle', 'nType', 'sDesc')