[svn] * Make subcave urls work.

* Add json and xml download to admin.

expo/admin.py

@@ -4,6 +4,8 @@ from feincms.admin import editor
 from django.forms import ModelForm
 import django.forms as forms
 from expo.forms import LogbookEntryForm
+from django.http import HttpResponse
+from django.core import serializers
 #from troggle.reversion.admin import VersionAdmin #django-reversion version control
 
 #overriding admin save so we have the new since parsing field
@@ -73,7 +75,6 @@ class CaveAdmin(TroggleModelAdmin):
 class SubcaveAdmin(editor.TreeEditorMixin,TroggleModelAdmin):
     pass
 
-
 admin.site.register(Photo)
 admin.site.register(Subcave, SubcaveAdmin)
 admin.site.register(Cave, CaveAdmin)
@@ -94,6 +95,29 @@ admin.site.register(QM, QMAdmin)
 admin.site.register(Survey, SurveyAdmin)
 admin.site.register(ScannedImage)
 
+def export_as_json(modeladmin, request, queryset):
+    response = HttpResponse(mimetype="text/json")
+    response['Content-Disposition'] = 'attachment; filename=troggle_output.xml'
+    serializers.serialize("json", queryset, stream=response)
+    return response
+
+admin.site.add_action(export_as_json)
+
+def export_as_xml(modeladmin, request, queryset):
+    response = HttpResponse(mimetype="text/xml")
+    response['Content-Disposition'] = 'attachment; filename=troggle_output.xml'
+    return response
+
+admin.site.add_action(export_as_xml)
+
+def export_as_python(modeladmin, request, queryset):
+    response = HttpResponse(mimetype="text/python")
+    response['Content-Disposition'] = 'attachment; filename=troggle_output.py'
+    serializers.serialize("json", queryset, stream=response)
+    return response
+
+admin.site.add_action(export_as_python)
+
 try:
     mptt.register(Subcave, order_insertion_by=['name'])
 except mptt.AlreadyRegistered: