def delete(request, loc_code):
""" Respond to the "/geo/editor/location/delete/XYZ" URL.
We let the user delete the location with the given code.
"""
if not request.user.is_authenticated:
return HttpResponseRedirect("/geo/editor/")
try:
location = Location.objects.get(code=loc_code)
except Location.DoesNotExist:
raise Http404
if request.method == "POST":
level = location.level
if request.POST['confirm'] == "1":
# Delete this location and all its associated records. Note that
# we have to be careful not to delete the records associated to
# this one by ForeignKey and ManyToManyFields.
for l in location.loc_parents.all():
l.parents.remove(location)
for l in location.loc_children.all():
l.children.remove(location)
for l in location.loc_neighbors.all():
l.neighbors.remove(location)
for outline in Outline.objects.filter(location=location):
outline.delete()
location.level = None
location.parents.clear()
location.children.clear()
location.neighbors.clear()
location.delete()
# Send a signal telling the rest of the system that the location
# record was deleted.
location_changed.send(sender=None)
return HttpResponseRedirect("/geo/editor/location/select/" +
str(level.level) + "/")
elif request.method == "GET":
return render_to_response("editor/templates/confirm.html",
{'title' : "Geodatabase Editor",
'heading' : "Delete Location",
'message' : "Are you sure you want to " +
"delete the "+str(location)+"?",
},
context_instance=RequestContext(request))
def details(request, loc_code):
""" Respond to the "/geo/editor/location/details/XYZ/" URL.
We let the user edit the details of the location with the given code.
"""
if not request.user.is_authenticated:
return HttpResponseRedirect("/geo/editor/")
try:
location = Location.objects.get(code=loc_code)
except Location.DoesNotExist:
return HttpResponseRedirect("/geo/editor/location/")
if request.method == "GET":
data = {}
data['code'] = location.code
data['name'] = location.name
data['display_name'] = location.display_name
data['abbreviation'] = location.abbreviation
data['display_point_lat'] = location.display_lat
data['display_point_long'] = location.display_long
data['population'] = location.population
data['area'] = location.area
if location.averageIncome != None:
data['averageIncome'] = int(location.averageIncome)
form = LocationDetailsForm(data)
errMsg = None
elif request.method == "POST":
if request.POST.get("cancel") == "Finished":
return HttpResponseRedirect("/geo/editor/location/")
if request.POST.get("delete") == "Delete this Location":
return HttpResponseRedirect("/geo/editor/location/delete/" +
location.code)
form = LocationDetailsForm(request.POST)
errMsg = None
if form.is_valid():
code = form.cleaned_data['code']
name = form.cleaned_data['name']
display_name = form.cleaned_data['display_name']
abbreviation = form.cleaned_data['abbreviation']
display_lat = form.cleaned_data['display_point_lat']
display_long = form.cleaned_data['display_point_long']
population = form.cleaned_data['population']
area = form.cleaned_data['area']
averageIncome = form.cleaned_data['averageIncome']
if display_lat != None:
display_lat = decimal.Decimal(display_lat)
if display_long != None:
display_long = decimal.Decimal(display_long)
if averageIncome != None:
averageIncome = decimal.Decimal(averageIncome)
if code == "":
errMsg = "You must enter a code for this location."
elif name == "":
errMsg = "You must enter a name for this location."
elif code != location.code:
if Location.objects.filter(code=code).count() > 0:
errMsg = "There is already a location with that code."
elif name != location.name:
if Location.objects.filter(level=location.level,
name=name).count() > 0:
errMsg = "There is already a " \
+ location.level.name.lower() \
+ " with that name."
elif display_name == "":
errMsg = "You must enter a display name for this location."
if errMsg == None:
location.code = code
location.name = name
location.display_name = display_name
location.abbreviation = abbreviation
location.display_lat = display_lat
location.display_long = display_long
location.population = population
location.area = area
location.averageIncome = averageIncome
location.save()
# Send a signal telling the rest of the system that the
# location record was changed.
location_changed.send(sender=None)
# Finally, tell the user's web browser to reload the page.
return HttpResponseRedirect("/geo/editor/location/details/" +
loc_code + "/")
return render_to_response("editor/templates/location_wrapper.html",
{'tab' : "details",
'heading' : "Editing " + str(location),
'location' : location,
'template_name' : "location_details.html",
'errMsg' : errMsg,
'form' : form},
context_instance=RequestContext(request))
def add(request, level):
""" Respond to the "/geo/editor/location/add/X/" URL.
We let the user add a location with the given level ID.
"""
if not request.user.is_authenticated:
return HttpResponseRedirect("/geo/editor/")
try:
level = Level.objects.get(level=level)
except Level.DoesNotExist:
return HttpResponseRedirect("/geo/editor/location/select/" +
str(level.level) + "/")
if request.method == "GET":
form = LocationDetailsForm()
errMsg = None
elif request.method == "POST":
if request.POST.get("cancel") == "Cancel":
return HttpResponseRedirect("/geo/editor/location/select/" +
str(level.level) + "/")
form = LocationDetailsForm(request.POST)
errMsg = None
if form.is_valid():
code = request.POST['code']
name = request.POST['name']
display_name = request.POST['display_name']
abbreviation = request.POST['abbreviation']
display_lat = request.POST['display_point_lat']
display_long = request.POST['display_point_long']
if code == "":
errMsg = "You must enter a code for this location."
elif name == "":
errMsg = "You must enter a name for this location."
elif Location.objects.filter(code=code).count() > 0:
errMsg = "There is already a location with that code."
elif Location.objects.filter(level=level, name=name).count() > 0:
errMsg = "There is already a " + level.name.lower() \
+ " with that name."
if errMsg == None:
location = Location()
location.level = level
location.code = code
location.name = name
location.display_name = display_name
location.abbreviation = abbreviation
location.min_zoom_lat = decimal.Decimal("0.00")
location.min_zoom_long = decimal.Decimal("0.00")
location.max_zoom_lat = decimal.Decimal("0.00")
location.max_zoom_long = decimal.Decimal("0.00")
if display_lat != None:
location.display_lat = decimal.Decimal(display_lat)
if display_long != None:
location.display_long = decimal.Decimal(display_long)
location.population = 0
location.area = 0
location.averageIncome = 0
location.save()
# Send a signal telling the rest of the system that the
# location record was added.
location_changed.send(sender=None)
# Finally, tell the user's web browser to reload the page.
return HttpResponseRedirect("/geo/editor/location/details/" +
code + "/")
return render_to_response("editor/templates/editForm.html",
{'title' : "Geodatabase Editor",
'heading' : "Add " + level.name,
'errMsg' : errMsg,
'form' : form},
context_instance=RequestContext(request))
def neighbors(request, loc_code):
""" Respond to the "/geo/editor/location/neighbors/XYZ/" URL.
We let the user edit the list of neighbours for the given location.
"""
if not request.user.is_authenticated:
return HttpResponseRedirect("/geo/editor/")
try:
location = Location.objects.get(code=loc_code)
except Location.DoesNotExist:
return HttpResponseRedirect("/geo/editor/location/")
neighbours = []
for neighbour in location.neighbors.all():
neighbours.append(neighbour)
if request.method == "GET":
# We're visiting the page for the first time -> just display it.
form = AddLocationForm()
errMsg = None
confirm = request.GET.get("confirm")
elif request.method == "POST":
# The user is submitting our form. See what the user wants to do.
# Did the user click on the "Finished" button?
if request.POST.get("finished") == "Finished":
return HttpResponseRedirect("/geo/editor/location/")
# Did the user click on one of our "Delete" buttons? We firstly
# display the confirmation button beside the entry, and only delete the
# entry if the user confirms.
for neighbour in location.neighbors.all():
deleteValue = request.POST.get("del-" + neighbour.code)
if deleteValue == "Delete":
# The user clicked on the "Delete" button for the first time ->
# redisplay the page with the confirmation buttons.
return HttpResponseRedirect("/geo/editor/neighbors/" +
loc_code + "/" +
"?confirm=" + neighbour.code)
elif deleteValue == "Yes":
# The user clicked on our "Yes" confirmation button. Delete
# this neighbour.
location.neighbors.remove(neighbour)
location.save()
# Tell the rest of the system that the Location table has
# changed.
location_changed.send(sender=None)
# Finally, tell the user's web browser to reload the page.
return HttpResponseRedirect("/geo/editor/neighbors/"+loc_code)
elif deleteValue == "No":
# The user clicked on the "No" confirmation button. Redisplay
# the page without the confirmation buttons.
return HttpResponseRedirect("/geo/editor/neighbors/" +
loc_code + "/")
# Did the user click on the "Add" button?
if request.POST.get("add") == "Add":
# Respond to the user adding a new neighbour.
form = AddLocationForm(request.POST)
errMsg = None
if form.is_valid():
new_neighbour_id = form.cleaned_data['loc_id']
if new_neighbour_id == None:
errMsg = "Please enter a location"
if errMsg == None:
try:
newNeighbour = Location.objects.get(
id=new_neighbour_id)
except Location.DoesNotExist:
errMsg = "No such location."
if errMsg == None:
filter = location.neighbors.filter(
id=new_neighbour_id)
if filter.count() > 0:
errMsg = "That location is already listed as " \
+ "a neighbor!"
if errMsg == None:
location.neighbors.add(newNeighbour)
location.save()
# Tell the rest of the system that the Location table
# has changed.
location_changed.send(sender=None)
# Finally, tell the user's web browser to reload the
# page.
return HttpResponseRedirect("/geo/editor/neighbors/" +
loc_code)
# If we get here, we're going to display the form again. Grab our
# "confirm" parameter so the form can display the appropriate
# confirmation buttons.
confirm = request.POST.get("confirm")
# If we get here, display the form to the user.
imports = ['<script type="text/javascript" ' +
'src="/geo/media/jquery-1.2.6.min.js"></script>',
'<script type="text/javascript" ' +
'src="/geo/media/jquery.autocomplete.js"></script>',
'<link href="/geo/media/jquery.autocomplete.css" ' +
'rel="stylesheet" type="text/css">',
'<link href="/geo/media/editor.css" rel="stylesheet" ' +
'type="text/css">',
]
return render_to_response("editor/templates/location_wrapper.html",
{'tab' : "neighbors",
'heading' : "Editing " + str(location),
'location' : location,
'template_name' : "location_neighbours.html",
'errMsg' : errMsg,
'form' : form,
'neighbours' : neighbours,
'confirm' : confirm,
'extra_head_tags' : imports,
'lookup_url' : "/geo/editor/location/lookup/",
},
context_instance=RequestContext(request))
