add support to single scheme filed (#148)

* add support to single scheme filed

Author: AvitalFineRedis

redisearch/client.py

@@ -308,7 +308,10 @@ def create_index(self, fields, no_term_offsets=False,
 
         args.append('SCHEMA')
 
-        args += list(itertools.chain(*(f.redis_args() for f in fields)))
+        try:
+            args += list(itertools.chain(*(f.redis_args() for f in fields)))
+        except TypeError:
+            args += fields.redis_args()
 
         return self.redis.execute_command(*args)
 
@@ -323,7 +326,10 @@ def alter_schema_add(self, fields):
 
         args = [self.ALTER_CMD, self.index_name, 'SCHEMA', 'ADD']
 
-        args += list(itertools.chain(*(f.redis_args() for f in fields)))
+        try:
+            args += list(itertools.chain(*(f.redis_args() for f in fields)))
+        except TypeError:
+            args += fields.redis_args()
 
         return self.redis.execute_command(*args)
 

test/test.py

@@ -826,10 +826,10 @@ def testAlterSchemaAdd(self):
             client.redis.flushdb()
 
             # Creating the index definition and schema
-            client.create_index((TextField('title'),))
+            client.create_index(TextField('title'))
 
             # Using alter to add a field
-            client.alter_schema_add((TextField('body'),))
+            client.alter_schema_add(TextField('body'))
 
             # Indexing a document
             client.add_document('doc1', title='MyTitle', body='Some content only in the body')