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Merge pull request #2598 from bblommers/feature/dynamodb_nested_list_append

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Dynamodb: nested list_append
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Mike Grima 2019-12-09 14:10:00 -08:00 • committed by GitHub
commit 90f5f7159d
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2 changed files with 142 additions and 3 deletions
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18
moto/dynamodb2/models.py
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@ -174,8 +174,13 @@ class DynamoType(object):
Returns DynamoType or None.
"""
if isinstance(key, six.string_types) and self.is_map() and key in self.value:
return DynamoType(self.value[key])
if isinstance(key, six.string_types) and self.is_map():
if "." in key and key.split(".")[0] in self.value:
return self.value[key.split(".")[0]].child_attr(
".".join(key.split(".")[1:])
)
elif "." not in key and key in self.value:
return DynamoType(self.value[key])
if isinstance(key, int) and self.is_list():
idx = key
@ -418,7 +423,14 @@ class Item(BaseModel):
list_append_re = re.match("list_append\\((.+),(.+)\\)", value)
if list_append_re:
new_value = expression_attribute_values[list_append_re.group(2).strip()]
old_list = self.attrs[list_append_re.group(1)]
old_list_key = list_append_re.group(1)
# Get the existing value
old_list = self.attrs[old_list_key.split(".")[0]]
if "." in old_list_key:
# Value is nested inside a map - find the appropriate child attr
old_list = old_list.child_attr(
".".join(old_list_key.split(".")[1:])
)
if not old_list.is_list():
raise ParamValidationError
old_list.value.extend(new_value["L"])