Compound validators usage

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Hi there,

i have a schema validator and want to use another compound validator
(SimpleFormValidator) from within the schema.

E.g. I do something along the lines:


def validate_text(value_dict, state, validator):

     # validation of text_field goes here. check value_dict for
bool_field's value to determine what to do next.


class ProductConfigurationSchema(Schema):
    filter_extra_fields = True
    allow_extra_fields = True

     bool_field = validators.Bool()
     text_field = SimpleFormValidator(validate_text)


This does not work as the schema does not expect that its fields are
compound validators. It doesn't pass the value_dict to the
SimpleFormValidator but rather a single value. This results in the
following errror in SimpleFormValidators to_python method:

    value_dict = value_dict.copy()
AttributeError: 'unicode' object has no attribute 'copy'


I followed that route because I want to achieve the following:

The visibility of the text_field depends on the bool_field. Therefore I'd
thought I write a custom method that checks the state of the bool when
validating the text_field. If it is set, I would perform the actual
validation. If the bool is not set, the text_field is irrelevant and
validating would essentially be a no-op.


Any tip how to tackle this?


Cheers, prinz.

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<p dir=3D"ltr">Hi there,</p><p dir=3D"ltr">i have a schema validator and wa=
nt to use another compound validator (SimpleFormValidator) from within the =
schema.</p><p dir=3D"ltr"></p><p dir=3D"ltr"></p><p dir=3D"ltr">E.g. I do s=
omething along the lines:</p>

<p dir=3D"ltr"><br></p><p dir=3D"ltr">def validate_text(value_dict, state, =
validator):</p><p dir=3D"ltr">=C2=A0=C2=A0=C2=A0=C2=A0 # validation of text=
_field goes here. check value_dict for bool_field&#39;s value to determine =
what to do next. <br>
</p>
<p dir=3D"ltr"><br></p><p dir=3D"ltr">class ProductConfigurationSchema(Sche=
ma):<br>=C2=A0=C2=A0=C2=A0 filter_extra_fields =3D True<br>=C2=A0=C2=A0=C2=
=A0 allow_extra_fields =3D True<br>=C2=A0=C2=A0 <br>=C2=A0=C2=A0=C2=A0=C2=
=A0 bool_field =3D validators.Bool() <br>=C2=A0=C2=A0=C2=A0=C2=A0 text_fiel=
d =3D SimpleFormValidator(validate_text)</p>

<p dir=3D"ltr"><br></p><p dir=3D"ltr"></p><p dir=3D"ltr">This does not work=
 as the schema does not expect that its fields are compound validators. It =
doesn&#39;t pass the value_dict to the SimpleFormValidator but rather a sin=
gle value. This results in the following errror in SimpleFormValidators to_=
python method:<br>

</p><p dir=3D"ltr"></p><p dir=3D"ltr">=C2=A0=C2=A0=C2=A0 value_dict =3D val=
ue_dict.copy()<br>AttributeError: &#39;unicode&#39; object has no attribute=
 &#39;copy&#39;</p><p dir=3D"ltr"></p><p dir=3D"ltr"><br></p><p dir=3D"ltr"=
>I followed that route because I want to achieve the following:</p>

<p dir=3D"ltr">The visibility of the text_field depends on the bool_field. =
Therefore I&#39;d thought I write a custom method that checks the state of =
the bool when validating the text_field. If it is set, I would perform the =
actual validation. If the bool is not set, the text_field is irrelevant and=
 validating would essentially be a no-op.</p>

<p dir=3D"ltr"><br>Any tip how to tackle this?<br></p><p dir=3D"ltr"></p><p=
 dir=3D"ltr"><br></p><p dir=3D"ltr">Cheers, prinz.<br></p><p dir=3D"ltr"></=
p><p dir=3D"ltr"></p>

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