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check_capped_string: Return a validator. 

This allows us to create custom validators.
This commit is contained in:
Umair Khan 2018-04-03 17:54:35 +05:00 committed by Tim Abbott
parent f34b72b830
commit 00ffa808da
1 changed files with 11 additions and 9 deletions
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20
zerver/lib/validator.py
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@ -39,18 +39,20 @@ def check_string(var_name: str, val: object) -> Optional[str]:
return None
def check_short_string(var_name: str, val: object) -> Optional[str]:
return check_capped_string(var_name, val, 50)
return check_capped_string(50)(var_name, val)
def check_capped_string(var_name: str, val: object, max_length: int) -> Optional[str]:
if not isinstance(val, str):
return _('%s is not a string') % (var_name,)
if len(val) >= max_length:
return _("{var_name} is longer than {max_length}.".format(
var_name=var_name, max_length=max_length))
return None
def check_capped_string(max_length: int) -> Callable[[str, object], Optional[str]]:
def validator(var_name: str, val: object) -> Optional[str]:
if not isinstance(val, str):
return _('%s is not a string') % (var_name,)
if len(val) >= max_length:
return _("{var_name} is longer than {max_length}.".format(
var_name=var_name, max_length=max_length))
return None
return validator
def check_long_string(var_name: str, val: object) -> Optional[str]:
return check_capped_string(var_name, val, 500)
return check_capped_string(500)(var_name, val)
def check_int(var_name: str, val: object) -> Optional[str]:
if not isinstance(val, int):