automated commit by check50 [check50=True]

app.py

@@ -68,7 +68,7 @@ def buy():
         return render_template("buy.html")
     else:
         symbol = request.form.get("symbol")
-        shares = request.form.get("shares")
+        shares = float(request.form.get("shares"))
 
         if not symbol:
             return apology("Not Symbol")
@@ -79,7 +79,7 @@ def buy():
             return apology("Symbol not found")
 
         if not shares == "":
-            transaction_value = int(shares) * stock["price"]
+            transaction_value = float(shares) * stock["price"]
 
             user_id = session["user_id"]
             user_cash_db = db.execute("SELECT cash FROM users WHERE id = ?", user_id)
@@ -205,6 +205,12 @@ def register():
         username = request.form.get("username")
         password = request.form.get("password")
 
+        username_exists = db.execute("SELECT * FROM users WHERE username = ?", username)
+
+        if username_exists:
+            flash("Username exists already!")
+            return render_template("register.html")
+
         db.execute("INSERT INTO users(username, hash) VALUES(?, ?)",
                    username, generate_password_hash(password))
         return redirect("/")

templates/buy.html

@@ -10,7 +10,7 @@
             <input class="form-control mx-auto w-auto" autocomplete="off" autofocus="" name="symbol" placeholder="Symbol" type="text">
         </div>
         <div class="mb-3">
-            <input class="form-control mx-auto w-auto" autocomplete="off" autofocus min="1" name="shares" placeholder="Shares" type="number">
+            <input class="form-control mx-auto w-auto" autocomplete="off" autofocus min="1" name="shares" placeholder="Shares" type="text">
         </div>
         <button class="btn btn-primary" type="submit">Buy</button>
     </form>