Fixing Mapbox geocoding validity checks

NEWS.md

@@ -683,4 +683,4 @@ Nov 27, 2015:
 * Release Geocoder API BETA 1
   * Added the organization public user to the api key check
 
-https://github.com/CartoDB/dataservices-api/releases/tag/0.0.1-beta
+https://github.com/CartoDB/dataservices-api/releases/tag/0.0.1-beta

server/lib/python/cartodb_services/cartodb_services/mapbox/geocoder.py

@@ -64,18 +64,31 @@ class MapboxGeocoder(Traceable):
         latitude = location[1]
         return [longitude, latitude]
 
+    def _validate_input(self, searchtext, city=None, state_province=None,
+                        country=None):
+        if searchtext and searchtext.strip():
+            return True
+        elif city:
+            return True
+        elif state_province:
+            return True
+
+        return False
+
     @qps_retry(qps=10)
     def geocode(self, searchtext, city=None, state_province=None,
                 country=None):
-        if searchtext and searchtext.strip():
-            address = [normalize(searchtext)]
-            if city:
-                address.append(normalize(city))
-            if state_province:
-                address.append(normalize(state_province))
-        else:
+        if not self._validate_input(searchtext, city, state_province, country):
             return []
 
+        address = []
+        if searchtext and searchtext.strip():
+            address.append(normalize(searchtext))
+        if city:
+            address.append(normalize(city))
+        if state_province:
+            address.append(normalize(state_province))
+
         country = [country] if country else None
 
         try:

server/lib/python/cartodb_services/setup.py

@@ -10,7 +10,7 @@ from setuptools import setup, find_packages
 setup(
     name='cartodb_services',
 
-    version='0.17.4',
+    version='0.17.5',
 
     description='CartoDB Services API Python Library',