Only select 10 stations by default.

api_app.py

@@ -85,6 +85,19 @@ def select_frames(conn, n, url_params):
     cur.execute(sql)
     rows = cur.fetchall()
     return rows
+    
+def select_stations(conn, n):
+    """
+    Query rows in the stations table
+    :param conn: the Connection object
+    :return:
+    """
+    cur = conn.cursor()
+    sql = 'SELECT * FROM stations ORDER BY last_heard_unix DESC LIMIT {n}'.format(n=n)
+    print(sql)
+    cur.execute(sql)
+    rows = cur.fetchall()
+    return rows
 
 @api_app.route('/')
 def index():
@@ -215,7 +228,7 @@ class Stations(Resource):
 
         conn = get_db_connection()
         # Limit to number of records requested
-        data = select_all_stations(conn)
+        data = select_stations(conn, n = n)
         # Sort by created date, descending (https://stackoverflow.com/a/45266808)
         #data.sort(key=operator.itemgetter('created'), reverse=True)
         return {'data':data}, 200  # return data and 200 OK code