CKAN - Hide `ckanext-validation` metadata fields on resource additional info if validation schema not added to resource.

README.md

The resource_read.html snippet assumes:

1. You have the ckanext-validation extension installed and configured.
2. You have the ckanext-scheming extension installed and configured.
3. You have a CKAN extension that implements the IConfigurer interface to add template overrides.
4. You save the snippet as templates/scheming/package/resource_read.html in your CKAN extension.
5. Your CKAN extension appears before the scheming_datasets and validation extension in ckan.plugins setting of your CKAN .ini file.

An example implementation can be found here: https://github.com/salsadigitalauorg/ckanext-hide-schema-metadata

resource_read.html

{% ckan_extends %}

{%- block resource_fields -%}

  {%- if 'schema' not in res -%}
    {%- do exclude_fields.append('schema') -%}
    {%- do exclude_fields.append('validation_options') -%}
    {%- do exclude_fields.append('validation_status') -%}
    {%- do exclude_fields.append('validation_timestamp') -%}
  {%- endif -%}

  {%- if 'validation_options' not in res and 'validation_options' not in exclude_fields -%}
    {%- do exclude_fields.append('validation_options') -%}
  {%- endif -%}

 {{ super() }}
{%- endblock -%}