From 09ac77d979d455dccba6bb73fad73b0b0cd8de85 Mon Sep 17 00:00:00 2001
From: sawandas <38201746+sawandas@users.noreply.github.com>
Date: Mon, 9 Apr 2018 12:10:44 +0530
Subject: [PATCH] Issue #1539 : Fixing dynamodb filtering (contains, begins
 with)

Currently contains and begins with are not respecting the given filter value
---
 moto/dynamodb2/comparisons.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/moto/dynamodb2/comparisons.py b/moto/dynamodb2/comparisons.py
index 68051460e..51d62fb83 100644
--- a/moto/dynamodb2/comparisons.py
+++ b/moto/dynamodb2/comparisons.py
@@ -176,6 +176,8 @@ def get_filter_expression(expr, names, values):
 
             next_token = six.next(token_iterator)
             while next_token != ')':
+                if next_token in values_map:
+                    next_token = values_map[next_token]
                 function_list.append(next_token)
                 next_token = six.next(token_iterator)