def default_qml_style(request, layername, style_name=None):
"""Set default style used by layer.
:param layername: The layer name in Geonode.
:type layername: basestring
:param style_name: The style name recognized by QGIS Server
:type style_name: str
"""
layer = get_object_or_404(Layer, name=layername)
if request.method == 'GET':
# Handle querying default style name request
default_style = layer.qgis_layer.default_style
retval = {
'name': default_style.name,
'title': default_style.title,
'style_url': default_style.style_url
}
return HttpResponse(json.dumps(retval),
content_type='application/json')
elif request.method == 'POST':
# For people who uses API request
if not request.user.has_perm('change_resourcebase',
layer.get_self_resource()):
return HttpResponse(
'User does not have permission to change QML style.',
status=403)
if not style_name:
return HttpResponseBadRequest()
style_url = style_set_default_url(layer, style_name)
response = requests.get(style_url)
if not (response.status_code == 200 and response.content == 'OK'):
return HttpResponseServerError('Failed to change default Style.'
'Error: {0}'.format(
response.content))
# Succesfully change default style
# Synchronize models
style = layer.qgis_layer.styles.get(name=style_name)
qgis_layer = layer.qgis_layer
qgis_layer.default_style = style
qgis_layer.save()
alert_message = 'Successfully changed default style %s' % style_name
return TemplateResponse(
request,
'qgis_server/forms/qml_style.html', {
'resource': layer,
'style_upload_form': QGISLayerStyleUploadForm(),
'alert': True,
'alert_message': alert_message,
'alert_class': 'alert-success'
},
status=200).render()
def qgis_server_urls(request):
"""Global values to pass to templates"""
defaults = dict(
UPLOADER_URL=reverse('data_upload') if getattr(
settings,
'UPLOADER',
dict()).get(
'BACKEND',
'geonode.rest') == 'geonode.importer' else reverse('layer_upload'),
LAYER_ANCILLARY_FILES_UPLOAD_URL=reverse('layer_upload'),
MAPFISH_PRINT_ENABLED=getattr(ogc_server_settings, 'MAPFISH_PRINT_ENABLED', False),
PRINT_NG_ENABLED=getattr(ogc_server_settings, 'PRINT_NG_ENABLED', False),
GEONODE_SECURITY_ENABLED=getattr(ogc_server_settings, 'GEONODE_SECURITY_ENABLED', False),
GEOGIG_ENABLED=getattr(ogc_server_settings, 'GEOGIG_ENABLED', False),
TIME_ENABLED=getattr(
settings,
'UPLOADER',
dict()).get(
'OPTIONS',
dict()).get(
'TIME_ENABLED',
False),
MOSAIC_ENABLED=getattr(
settings,
'UPLOADER',
dict()).get(
'OPTIONS',
dict()).get(
'MOSAIC_ENABLED',
False),
)
defaults['style_upload_form'] = QGISLayerStyleUploadForm()
return defaults
def qml_style(request, layername, style_name=None):
"""Update/Retrieve QML style of a given QGIS Layer.
:param layername: The layer name in Geonode.
:type layername: basestring
:param style_name: The style name recognized by QGIS Server
:type style_name: str
"""
layer = get_object_or_404(Layer, name=layername)
if request.method == 'GET':
# Request QML from QGIS server
if not style_name:
# If no style name provided, then it is a List request
styles_obj = None
try:
styles_obj = style_list(layer, internal=False)
except BaseException:
print 'Failed to fetch styles'
styles_dict = []
if styles_obj:
styles_dict = [model_to_dict(s) for s in styles_obj]
# If no style returned by GetCapabilities, this is a bug in QGIS
# Attempt to generate default style name
if not styles_dict:
style_url = style_get_url(layer, 'default')
response = requests.get(style_url)
if response.status_code == 200:
style_url = style_add_url(layer, 'default')
with open(layer.qgis_layer.qml_path, 'w') as f:
f.write(response.content)
response = requests.get(style_url)
if response.status_code == 200:
styles_obj = style_list(layer, internal=False)
styles_dict = [model_to_dict(s) for s in styles_obj]
response = HttpResponse(
json.dumps(styles_dict), content_type='application/json')
return response
# Return XML file of the style
style_url = style_get_url(layer, style_name, internal=False)
response = requests.get(style_url)
if response.status_code == 200:
response = HttpResponse(
response.content, content_type='text/xml')
response[
'Content-Disposition'] = 'attachment; filename=%s.qml' % (
style_name, )
else:
response = HttpResponse(
response.content, status=response.status_code)
return response
elif request.method == 'POST':
# For people who uses API request
if not request.user.has_perm(
'change_resourcebase', layer.get_self_resource()):
return HttpResponse(
'User does not have permission to change QML style.',
status=403)
# Request about adding new QML style
form = QGISLayerStyleUploadForm(request.POST, request.FILES)
if not form.is_valid():
return TemplateResponse(
request,
'qgis_server/forms/qml_style.html',
{
'resource': layer,
'style_upload_form': form
},
status=400).render()
try:
uploaded_qml = request.FILES['qml']
# update qml in uploaded media folder
# check upload session, is qml file exists?
layerfile_set = layer.upload_session.layerfile_set
try:
qml_layer_file = layerfile_set.get(name='qml')
# if it is exists, we need to delete it, because it won't be
# managed by geonode
qml_layer_file.delete()
except LayerFile.DoesNotExist:
pass
# update qml in QGIS Layer folder
content = uploaded_qml.read()
qgis_layer = get_object_or_404(QGISServerLayer, layer=layer)
with open(qgis_layer.qml_path, mode='w') as f:
f.write(content)
# construct URL to post new QML
style_name = request.POST['name']
style_title = request.POST['title']
if not style_name:
# Assign default name
name_format = 'style_%Y%m%d%H%M%S'
current_time = datetime.datetime.utcnow()
style_name = current_time.strftime(name_format)
# Add new style
style_url = style_add_url(layer, style_name)
response = requests.get(style_url)
if not (response.status_code == 200 and response.content == 'OK'):
try:
style_list(layer, internal=False)
except BaseException:
print 'Failed to fetch styles'
return TemplateResponse(
request,
'qgis_server/forms/qml_style.html',
{
'resource': layer,
'style_upload_form': QGISLayerStyleUploadForm(),
'alert': True,
'alert_message': response.content,
'alert_class': 'alert-danger'
},
status=response.status_code).render()
# We succeeded on adding new style
# Refresh style models
try:
style_list(layer, internal=False)
qgis_style = layer.qgis_layer.styles.get(name=style_name)
qgis_style.title = style_title
qgis_style.save()
alert_message = 'Successfully add style %s' % style_name
except BaseException:
alert_message = 'Failed to fetch styles'
return TemplateResponse(
request,
'qgis_server/forms/qml_style.html',
{
'resource': layer,
'style_upload_form': form,
'alert': True,
'alert_class': 'alert-success',
'alert_message': alert_message
},
status=201).render()
except Exception as e:
logger.exception(e)
return HttpResponseServerError()
elif request.method == 'DELETE':
# Request to delete particular QML Style
if not style_name:
# Style name should exists
return HttpResponseBadRequest('Style name not provided.')
# Handle removing tile-style cache
try:
style = layer.qgis_layer.styles.get(name=style_name)
shutil.rmtree(style.style_tile_cache_path)
except BaseException:
pass
style_url = style_remove_url(layer, style_name)
response = requests.get(style_url)
if not (response.status_code == 200 and response.content == 'OK'):
alert_message = response.content
if 'NAME is NOT an existing style.' in response.content:
alert_message = '%s is not an existing style' % style_name
try:
style_list(layer, internal=False)
except BaseException:
print 'Failed to fetch styles'
return TemplateResponse(
request,
'qgis_server/forms/qml_style.html',
{
'resource': layer,
'style_upload_form': QGISLayerStyleUploadForm(),
'alert': True,
'alert_message': alert_message,
'alert_class': 'alert-danger'
},
status=response.status_code).render()
# Successfully removed styles
# Handle when default style is deleted.
# Will be handled by style_list method
try:
style_list(layer, internal=False)
alert_message = 'Successfully deleted style %s' % style_name
except BaseException:
alert_message = 'Failed to fetch styles'
return TemplateResponse(
request,
'qgis_server/forms/qml_style.html',
{
'resource': layer,
'style_upload_form': QGISLayerStyleUploadForm(),
'alert': True,
'alert_message': alert_message,
'alert_class': 'alert-success'
},
status=200).render()
return HttpResponseBadRequest()
