Generate ZIP file for download on click of QR code button

Author: johannaengland

python/nav/web/seeddb/page/__init__.py

@@ -42,11 +42,19 @@ def not_implemented(*_args, **_kwargs):
     raise NotImplementedError()
 
 
-def view_switcher(request, list_view=None, move_view=None, delete_view=None):
+def view_switcher(
+    request,
+    list_view=None,
+    move_view=None,
+    delete_view=None,
+    generate_qr_codes_view=None,
+):
     """Selects appropriate view depending on POST data."""
     if request.method == 'POST':
         if 'move' in request.POST:
             return move_view(request)
         elif 'delete' in request.POST:
             return delete_view(request)
+        elif 'qr_code' in request.POST:
+            return generate_qr_codes_view(request)
     return list_view(request)

python/nav/web/seeddb/page/netbox/__init__.py

@@ -18,11 +18,14 @@
 import datetime
 from django.db import transaction
 from django.contrib.postgres.aggregates import ArrayAgg
+from django.http import HttpResponseRedirect
+from django.urls import reverse
 
 from nav.models.manage import Netbox
 from nav.bulkparse import NetboxBulkParser
 from nav.bulkimport import NetboxImporter
 
+from nav.web.message import new_message, Messages
 from nav.web.seeddb import SeeddbInfo, reverse_lazy
 from nav.web.seeddb.constants import SEEDDB_EDITABLE_MODELS
 from nav.web.seeddb.page import view_switcher
@@ -31,6 +34,10 @@
 from nav.web.seeddb.utils.move import move
 from nav.web.seeddb.utils.bulk import render_bulkimport
 from nav.web.seeddb.page.netbox.forms import NetboxFilterForm, NetboxMoveForm
+from nav.web.utils import (
+    generate_qr_codes_as_byte_strings,
+    generate_qr_codes_as_zip_file,
+)
 
 
 class NetboxInfo(SeeddbInfo):
@@ -54,7 +61,11 @@ class NetboxInfo(SeeddbInfo):
 def netbox(request):
     """Controller for landing page for netboxes"""
     return view_switcher(
-        request, list_view=netbox_list, move_view=netbox_move, delete_view=netbox_delete
+        request,
+        list_view=netbox_list,
+        move_view=netbox_move,
+        delete_view=netbox_delete,
+        generate_qr_codes_view=netbox_generate_qr_codes,
     )
 
 
@@ -112,6 +123,58 @@ def netbox_pre_deletion_mark(queryset):
     queryset.update(deleted_at=datetime.datetime.now(), up_to_date=False)
 
 
+def netbox_generate_qr_codes(request):
+    """Controller for generating qr codes for netboxes"""
+    if not request.POST.getlist('object'):
+        new_message(
+            request,
+            "You need to select at least one object to generate qr codes for",
+            Messages.ERROR,
+        )
+        return HttpResponseRedirect(reverse('seeddb-room'))
+
+    url_dict = dict()
+    netboxes = Netbox.objects.filter(id__in=request.POST.getlist('object'))
+
+    for netbox in netboxes:
+        url = request.build_absolute_uri(
+            reverse('ipdevinfo-details-by-id', kwargs={'netbox_id': netbox.id})
+        )
+        url_dict[str(netbox)] = url
+
+    qr_codes_zip_file = generate_qr_codes_as_zip_file(url_dict=url_dict)
+
+    info = NetboxInfo()
+    query = (
+        Netbox.objects.select_related("room", "category", "type", "organization")
+        .prefetch_related("profiles")
+        .annotate(profile=ArrayAgg("profiles__name"))
+    )
+    filter_form = NetboxFilterForm(request.GET)
+    value_list = (
+        'sysname',
+        'room',
+        'ip',
+        'category',
+        'organization',
+        'profile',
+        'type__name',
+    )
+    return render_list(
+        request,
+        query,
+        value_list,
+        'seeddb-netbox-edit',
+        edit_url_attr='pk',
+        filter_form=filter_form,
+        template='seeddb/list_netbox.html',
+        extra_context={
+            **info.template_context,
+            **{"qr_codes_zip_file": qr_codes_zip_file},
+        },
+    )
+
+
 def netbox_move(request):
     """Controller for handling a move request"""
     info = NetboxInfo()

python/nav/web/seeddb/page/room.py

@@ -17,12 +17,14 @@
 #
 """Forms and view functions for SeedDB's Room view"""
 
+from django.http import HttpResponseRedirect
 from django.urls import reverse
 
 from nav.models.manage import Room
 from nav.bulkparse import RoomBulkParser
 from nav.bulkimport import RoomImporter
 
+from nav.web.message import new_message, Messages
 from nav.web.seeddb import SeeddbInfo, reverse_lazy
 from nav.web.seeddb.constants import SEEDDB_EDITABLE_MODELS
 from nav.web.seeddb.page import view_switcher
@@ -31,6 +33,10 @@
 from nav.web.seeddb.utils.delete import render_delete
 from nav.web.seeddb.utils.move import move
 from nav.web.seeddb.utils.bulk import render_bulkimport
+from nav.web.utils import (
+    generate_qr_codes_as_byte_strings,
+    generate_qr_codes_as_zip_file,
+)
 
 from ..forms import RoomForm, RoomFilterForm, RoomMoveForm
 
@@ -56,7 +62,11 @@ class RoomInfo(SeeddbInfo):
 def room(request):
     """Controller for listing, moving and deleting rooms"""
     return view_switcher(
-        request, list_view=room_list, move_view=room_move, delete_view=room_delete
+        request,
+        list_view=room_list,
+        move_view=room_move,
+        delete_view=room_delete,
+        generate_qr_codes_view=room_generate_qr_codes,
     )
 
 
@@ -84,6 +94,43 @@ def room_move(request):
     )
 
 
+def room_generate_qr_codes(request):
+    """Controller for generating qr codes for rooms"""
+    if not request.POST.getlist('object'):
+        new_message(
+            request,
+            "You need to select at least one object to generate qr codes for",
+            Messages.ERROR,
+        )
+        return HttpResponseRedirect(reverse('seeddb-room'))
+
+    url_dict = dict()
+    ids = request.POST.getlist('object')
+
+    for id in ids:
+        url = request.build_absolute_uri(reverse('room-info', kwargs={'roomid': id}))
+        url_dict[id] = url
+
+    qr_codes_zip_file = generate_qr_codes_as_zip_file(url_dict=url_dict)
+
+    info = RoomInfo()
+    value_list = ('id', 'location', 'description', 'position', 'data')
+    query = Room.objects.select_related("location").all()
+    filter_form = RoomFilterForm(request.GET)
+    # When we drop Python 3.7 we can use extra_context = info.template_context | {"qr_codes": qr_codes}
+    return render_list(
+        request,
+        query,
+        value_list,
+        'seeddb-room-edit',
+        filter_form=filter_form,
+        extra_context={
+            **info.template_context,
+            **{"qr_codes_zip_file": qr_codes_zip_file},
+        },
+    )
+
+
 def room_delete(request, object_id=None):
     """Controller for deleting rooms. Used in room()"""
     info = RoomInfo()

python/nav/web/templates/seeddb/list.html

@@ -30,6 +30,10 @@
       </div>
     {% endif %}
 
+    {% if qr_codes_zip_file %}
+      <a src="{{ qr_codes_zip_file }}" download="nav_qr_codes">Download generated QR Codes</a>
+    {% endif %}
+
     <div id="tablewrapper" class="notvisible" data-forpage="{{ request.path }}" data-page="{{ active_page }}">
       <table id="seeddb-content" class="listtable" width="100%">
         <caption>