Fix widget for None icon_url values

Author: erick-otenyo

forecastmanager/widgets.py

@@ -6,7 +6,7 @@
 from wagtail.utils.widgets import WidgetWithScript
 from wagtail.widget_adapters import WidgetAdapter
 
-from forecastmanager.constants import WEATHER_CONDITION_CHOICES, WEATHER_CONDITION_ICONS
+from forecastmanager.constants import WEATHER_CONDITION_ICONS
 
 
 class WeatherSymbolChooserWidget(WidgetWithScript, widgets.TextInput):
@@ -22,7 +22,8 @@ def __init__(self, attrs=None):
 
     def get_context(self, name, value, attrs):
         context = super().get_context(name, value, attrs)
-        context["widget"]["icon_url"] = static("forecastmanager/weathericons/{0}.png".format(value))
+        if value:
+            context["widget"]["icon_url"] = static("forecastmanager/weathericons/{0}.png".format(value))
         return context
 
     def render_js_init(self, id_, name, value):

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = forecastmanager
-version = 0.4.1
+version = 0.4.2
 description = Integration of Weather City Forecasts Manager in Wagtail Projects.
 long_description = file:README.md
 long_description_content_type = text/markdown