def create_style(request,
json_data,
layer_id,
is_preview=False,
has_custom_legend=None):
layer = Layer.objects.get(id=int(layer_id))
datastore = layer.datastore
workspace = datastore.workspace
gs = geographic_servers.get_instance().get_server_by_id(
workspace.server.id)
layer_styles = StyleLayer.objects.filter(layer=layer)
is_default = False
if not is_preview:
is_default = json_data.get('is_default')
if is_default:
for ls in layer_styles:
s = Style.objects.get(id=ls.style.id)
s.is_default = False
s.save()
else:
has_default_style = False
for ls in layer_styles:
s = Style.objects.get(id=ls.style.id)
if s.is_default:
has_default_style = True
if not has_default_style:
is_default = True
name = json_data.get('name')
if is_preview:
name = name + '__tmp'
is_default = False
style = Style(name=name,
title=json_data.get('title'),
is_default=is_default,
type='CT')
if has_custom_legend == 'true':
style.has_custom_legend = True
legend_name = 'legend_' + ''.join(
random.choice(string.ascii_uppercase) for i in range(6)) + '.png'
legend_path = utils.check_custom_legend_path()
style.custom_legend_url = utils.save_custom_legend(
legend_path, request.FILES['file'], legend_name)
else:
style.has_custom_legend = False
style.save()
style_layer = StyleLayer(style=style, layer=layer)
style_layer.save()
json_rule = json_data.get('rule')
filter_text = ""
if json_rule.get('filter').__len__() != 0:
filter_text = str(json.dumps(json_rule.get('filter')))
rule = Rule(style=style,
name=json_rule.get('name'),
title=json_rule.get('title'),
abstract="",
filter=filter_text,
minscale=json_rule.get('minscale'),
maxscale=json_rule.get('maxscale'),
order=json_rule.get('order'))
rule.save()
color_map = ColorMap(type='ramp', extended=False)
color_map.save()
symbolizer = RasterSymbolizer(rule=rule,
color_map=color_map,
order=0,
opacity=1.0)
symbolizer.save()
color_map_entry_list = []
for entry in json_data.get('entries'):
json_entry = json.loads(entry.get('json'))
color_map_entry = ColorMapEntry(color_map=color_map,
order=int(json_entry.get('order')),
color=json_entry.get('color'),
quantity=json_entry.get('quantity'),
label=json_entry.get('label'),
opacity=json_entry.get('opacity'))
color_map_entry_list.append(color_map_entry)
order = 0
color_map_entry_list = sorted(
color_map_entry_list,
key=lambda color_map_entry: float(color_map_entry.quantity))
for cme in color_map_entry_list:
cme.order = order
cme.save()
order = order + 1
sld_body = sld_builder.build_sld(layer, style)
if is_preview:
if gs.createOverwrittenStyle(style.name, sld_body, True):
return True
else:
return False
else:
if gs.createOverwrittenStyle(style.name, sld_body, True):
if not is_preview:
gs.setLayerStyle(layer, style.name, style.is_default)
return True
else:
return False
