Minor fixes to leaderboard and listings slider bars

db.py

@@ -778,6 +778,9 @@ def max_price():
 
     max_price = cur.fetchall()
 
+    if max_price[0][0] is None:
+        return 10
+
     return max_price[0][0]
 
 

pages/Leaderboard.py

@@ -12,7 +12,12 @@
 
 ids = db.distinct_business_ids()
 
-number_names = st.slider("Number of Businesses", min_value=1, max_value=len(ids))
+num_ids = len(ids)
+
+if num_ids < 2:
+    num_ids = 2
+
+number_names = st.slider("Number of Businesses", min_value=1, max_value=num_ids)
 
 businesses = db.displayLeaderboard(number_names)
 

pages/Listings.py

@@ -151,7 +151,7 @@ def filter_interface():
 
     max_item_price = math.ceil(db.max_price())
 
-    price = st.slider("Listings price", value = (0, max_item_price), step = 1)
+    price = st.slider("Listings price ($)", value = (0, max_item_price), step = 1)
 
     filter_dict["price"] = price