[ckan-dev] Custom Validator Question

[Pedro G Silva]

Hi

Im trying to construct my own validator using
http://docs.ckan.org/en/latest/extensions/adding-custom-fields.html#custom-validators
 trying to do no. 5. a callable object taking two parameters
validator(value, context). When trying to use it I get an error:
UnknownValidator: Validator `cloud_coverage_val` does not exist

Any ideas why? I also tried option no1 wuth no success.
I have the following code:

import ckan.plugins as p
import ckan.plugins.toolkit as tk

from ckan.plugins.toolkit import Invalid
def cloud_coverage_val(value, context):
    if not value.isdigit():
        raise Invalid("Invalid cloud coverage value, must be number
between 0.0 and 100.0")
    return float(value)

class ExtrafieldsPlugin(p.SingletonPlugin, tk.DefaultDatasetForm):
    p.implements(p.IDatasetForm)
    #########
    p.implements(p.IConfigurer)

    # IConfigurer
    def update_config(self, config_):
        tk.add_template_directory(config_, 'templates')
        tk.add_public_directory(config_, 'public')
        tk.add_resource('fanstatic', 'extrafields')


*[OMITTED CODE]*

    def show_package_schema(self):
        schema = super(ExtrafieldsPlugin, self).show_package_schema()

        # Add our custom_text field to the dataset schema.
        # schema.update({
        #     'CloudCover': [tk.get_converter('convert_from_extras'),
        #                     tk.get_validator('ignore_missing')]
        # })

        schema.update({
                'cloud_cover' : [ tk.get_converter('convert_from_extras'),
                                 tk.get_validator('ignore_missing'),
                                  tk.get_validator('cloud_coverage_val')]
            })

        schema['resources'].update({
                'cloud_cover_resource' : [ tk.get_validator('ignore_missing') ]
            })
        return schema

-- 


[image: DEIMOS Engenharia, SA] <http://www.deimos.pt>
*Pedro Gracio Silva*
Aerospace Systems / Production Center

*Av. D. Joao II, Lt 1.17.01, 10 • 1998-023 Lisboa, Portugal*
Ph: +351 21 893 3020 • Fax: +351 21 896 9099
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