Merge pull request #138 from JacobGeoGeek/bug-137-No-data-validation-lat-lng

Validate the lat lng coordinates when initialize the Map object.

Author: Riverfount

flask_googlemaps/__init__.py

@@ -59,7 +59,7 @@ def __init__(
         self.language = language
         self.region = region
         self.varname = varname
-        self.center = (lat, lng)
+        self.center = self.verify_lat_lng_coordinates(lat, lng)
         self.zoom = zoom
         self.maptype = maptype
         self.markers = []
@@ -758,6 +758,14 @@ def as_json(self):
 
         return json_dict
 
+    def verify_lat_lng_coordinates(self, lat, lng):
+        if not (90 >= lat >= -90):
+            raise AttributeError("Latitude must be between -90 and 90 degrees inclusive.")
+        if not (180 >= lng >= -180):
+            raise AttributeError("Longitude must be between -180 and 180 degrees inclusive.")
+        
+        return (lat,lng) 
+
     @property
     def js(self):
         return Markup(