Validate schema list error: RuntimeError: There's no handler for 'status' in the 'validate' domain.

Using Stable Version I am trying cerberus for our validator and i have one testing python file as below:

from cerberus import Validator
from datetime import datetime, date, time

def string_toDatetime(string):
    return datetime.strptime(string, '%Y-%m-%d')


schema={
 'adminStatus':{
    'type':'list',
    'schema':{
      'effectiveDates':{
        'type':'dict',
        'schema':{
          'effectiveFrom':{'type':'datetime'},
          'effectiveTo':{'type':'datetime'}
        }
      },
      'status':{'type':'string','allowed':['Active','Inactive']},
      'reason':{'type':'string'}
    }
  }    
}

document={
  'adminStatus':[
  {
    'effectiveDates':{
      'effectiveFrom':string_toDatetime('2018-05-10'),
      'effectiveTo':string_toDatetime('2018-05-11')
    },
    'status':'ctive',
    'reason':'Expired'
  },
  {
    'effectiveDates' : {
      'effectiveFrom' :string_toDatetime('2018-05-11')
    },
    'status' : 'Inactive',
    'reason' : 'Matured'
  }
]
}

v=Validator(schema)
v.validate(document)


print(v.errors)

However I encounter some error like below:

  File "E:\cerberus\cerberus_test.py", line 46, in <module>
    v.validate(document)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 877, in validate
    self.__validate_definitions(definitions, field)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 940, in __validate_definitions
    result = validate_rule(rule)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 922, in validate_rule
    return validator(definitions.get(rule, None), field, value)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 1234, in _validate_schema
    self.__validate_schema_sequence(field, schema, value)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 1259, in __validate_schema_sequence
    update=self.update, normalize=False)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 877, in validate
    self.__validate_definitions(definitions, field)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 940, in __validate_definitions
    result = validate_rule(rule)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 921, in validate_rule
    validator = self.__get_rule_handler('validate', rule)
  File "C:\Python27\lib\site-packages\cerberus\validator.py", line 338, in __get_rule_handler
    "domain.".format(rule, domain))
RuntimeError: There's no handler for 'status' in the 'validate' domain.```

Am i using schema list correctly? Could anyone tell me why and how to correct it? 
@funkyfuture 

Many thanks.

[Flargebla]

So your schema definition is pretty close, you are just missing a ‘schema’ rule layer. If you check out the docs here, you will see their example for list item validation.

I believe the schema you were trying to create was as follows:

schema={
 'adminStatus':{
    'type':'list',
    'schema':{
      'type': 'dict',
      'schema': {
        'effectiveDates':{
          'type':'dict',
          'schema':{
            'effectiveFrom':{'type':'datetime'},
            'effectiveTo':{'type':'datetime'}
          }
        },
        'status':{'type':'string','allowed':['Active','Inactive']},
        'reason':{'type':'string'}
      }
    }
  }
}

The first schema rule (with list) is used to define a schema for what each element in the list should look like. Then you need to specify a type (dict) and schema for those dictionaries that are expected as list elements.

[rijubhaskergslab]

Many Thanks ,

It was my small mistake because of which validation was not happening.

Now it is happening properly.

Thanks

Riju Bhasker

From: Connor Zapfel [e-mail] Sent: 04 July 2019 10:57 To: pyeve/cerberus [e-mail] Cc: rijubhaskergslab [e-mail]; Comment < [e-mail]> Subject: Re: [pyeve/cerberus] Validate schema list error: RuntimeError: There’s no handler for ‘status’ in the ‘validate’ domain. (#399)

Can you give me an example of data that fails to validate?

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