# app/avo/resources/post.rb
class Avo::Resources::Post < Avo::BaseResource
  # ...

  def fields
    discover_columns except: [:metadata, :internal_notes]
    discover_associations except: [:audit_logs]
  end
end
```

##### Default value

`nil`

#### Possible values

Array of symbols representing column or association names

</Option>

<Option name="`column_names_mapping`">

Override how specific column names are mapped to field types globally.

```rb{5-8}