change trans page to use paginator and accept page_no instead of start and end

manifests/ships/views.py

@@ -9,6 +9,7 @@ from django.template import RequestContext
 from ox.django.shortcuts import render_to_json_response
 from django.views.decorators.csrf import csrf_exempt
 from django.contrib.auth.decorators import login_required
+from django.core.paginator import Paginator, InvalidPage, EmptyPage
 
 @login_required
 def googletranslate(request, model, field):
@@ -78,13 +79,13 @@ def dotranslate(request, model, field):
 
 
 @login_required
-def translate(request, model, field):
-    start = request.GET.get("start", False)
-    end = request.GET.get("end", False)
-    if not start and not end:
-        limit = False
-    else:
-        limit = True
+def translate(request, model, field, page_no=1):
+#    start = request.GET.get("start", False)
+#    end = request.GET.get("end", False)
+#    if not start and not end:
+#        limit = False
+#    else:
+#        limit = True
     try:
         m = models.__getattribute__(model)
     except AttributeError:
@@ -95,13 +96,21 @@ def translate(request, model, field):
     trans_field = field + "_trans"
     q = Q(**{"%s__exact" % trans_field: ''})
     qset = m.objects.values('id', field, trans_field).exclude(q).order_by(field).distinct(field)
-    if limit:
-        if not start:
-            start = 0
-        if not end:
-            end = qset.count()
-        qset = qset[start:end]
-    for obj in qset:
+    paginator = Paginator(qset, 100)
+    try:
+        results = paginator.page(page_no)
+    except (EmptyPage, InvalidPage):
+        results = paginator.page(paginator.num_pages)    
+        page_no = paginator.num_pages
+
+
+#    if limit:
+#        if not start:
+#            start = 0
+#        if not end:
+#            end = qset.count()
+#        qset = qset[start:end]
+    for obj in results.object_list:
         response.append({
             'id': obj['id'],
             'string': obj[field],
@@ -109,10 +118,10 @@ def translate(request, model, field):
         })
     context = RequestContext(request, {
         'values': response,
+        'page_no': page_no,
+        'num_pages': paginator.num_pages,
         'model': model,
-        'field': field,
-        'start': start,
-        'end': end
+        'field': field
     })
     return render_to_response("trans.html", context)
 

manifests/urls.py

@@ -15,7 +15,7 @@ urlpatterns = patterns('',
     # Uncomment the next line to enable the admin:
 
     # for human translators
-    (r'^trans/(?P<model>[A-Za-z].*?)/(?P<field>[A-Za-z].*?)/', 'ships.views.translate'),
+    (r'^trans/(?P<model>[A-Za-z].*?)/(?P<field>[A-Za-z].*?)/(?P<page_no>[0-9]?)', 'ships.views.translate'),
 #    (r'^dotrans/(?P<model>[A-Za-z].*?)/(?P<field>[A-Za-z].*?)/', 'ships.views.dotranslate'),
 
     # for automated google translation