--- a/ckanext/datagovau/plugin.py
+++ b/ckanext/datagovau/plugin.py
@@ -1,1 +1,164 @@
+import logging
 
+import ckan.plugins as plugins
+import ckan.plugins.toolkit as tk
+
+
+# get_action will be deprecated soon, this is the replacement
+def get_user(user):
+    user_name = unicode(user)
+    if user_name:
+        user_obj = model.User.get(id)
+        context['user_obj'] = user_obj
+        if user_obj is None:
+            raise NotFound
+    else:
+        raise NotFound
+
+    return model_dictize.user_dictize(user_obj,context)
+
+
+class ExampleIDatasetFormPlugin(plugins.SingletonPlugin,
+                                tk.DefaultDatasetForm):
+    '''An example IDatasetForm CKAN plugin.
+
+    Uses a tag vocabulary to add a custom metadata field to datasets.
+
+    '''
+    plugins.implements(plugins.IConfigurer, inherit=False)
+    plugins.implements(plugins.IDatasetForm, inherit=False)
+    plugins.implements(plugins.ITemplateHelpers, inherit=False)
+
+    # These record how many times methods that this plugin's methods are
+    # called, for testing purposes.
+    num_times_new_template_called = 0
+    num_times_read_template_called = 0
+    num_times_edit_template_called = 0
+    num_times_search_template_called = 0
+    num_times_history_template_called = 0
+    num_times_package_form_called = 0
+    num_times_check_data_dict_called = 0
+    num_times_setup_template_variables_called = 0
+
+
+    def update_config(self, config):
+        # Add this plugin's templates dir to CKAN's extra_template_paths, so
+        # that CKAN will use this plugin's custom templates.
+        # here = os.path.dirname(__file__)
+        # rootdir = os.path.dirname(os.path.dirname(here))
+
+        tk.add_template_directory(config, 'templates')
+        tk.add_public_directory(config, 'theme/public')
+        tk.add_resource('theme/public', 'ckanext-datagovau')
+        # config['licenses_group_url'] = 'http://%(ckan.site_url)/licenses.json'
+
+    def get_helpers(self):
+        return {'getuser': get_user}
+
+    def is_fallback(self):
+        # Return True to register this plugin as the default handler for
+        # package types not handled by any other IDatasetForm plugin.
+        return True
+
+    def package_types(self):
+        # This plugin doesn't handle any special package types, it just
+        # registers itself as the default (above).
+        return []
+
+
+    def create_package_schema(self):
+        schema = super(ExampleIDatasetFormPlugin, self).create_package_schema()
+        schema = self._modify_package_schema(schema)
+        return schema
+
+    def update_package_schema(self):
+        schema = super(ExampleIDatasetFormPlugin, self).update_package_schema()
+        schema = self._modify_package_schema(schema)
+        return schema
+
+    def show_package_schema(self):
+        schema = super(ExampleIDatasetFormPlugin, self).show_package_schema()
+
+        # Don't show vocab tags mixed in with normal 'free' tags
+        # (e.g. on dataset pages, or on the search page)
+        schema['tags']['__extras'].append(tk.get_converter('free_tags_only'))
+
+        # Add our custom_text field to the dataset schema.
+        # ignore_missing == optional
+        # ignore_empty == mandatory but not for viewing
+        # !!! always convert_from_extras first
+        schema.update({
+            'agency_program': [tk.get_converter('convert_from_extras'),
+                               tk.get_validator('ignore_missing')],
+            'contact_point': [tk.get_converter('convert_from_extras'),
+                              tk.get_validator('ignore_empty')],
+            'spatial_coverage': [tk.get_converter('convert_from_extras'),
+                                 tk.get_validator('ignore_empty')],
+            'granularity': [tk.get_converter('convert_from_extras'),
+                            tk.get_validator('ignore_empty')],
+            'jurisdiction': [tk.get_converter('convert_from_extras'),
+                             tk.get_validator('ignore_empty')],
+            'temporal_coverage': [tk.get_converter('convert_from_extras'),
+                                  tk.get_validator('ignore_empty')],
+            'data_state': [tk.get_converter('convert_from_extras'),
+                           tk.get_validator('ignore_empty')],
+            'update_freq': [tk.get_converter('convert_from_extras'),
+                            tk.get_validator('ignore_empty')]
+        })
+        return schema
+
+    def _modify_package_schema(self, schema):
+        # Add our custom_test metadata field to the schema, this one will use
+        # convert_to_extras instead of convert_to_tags.
+        # ignore_missing == optional
+        # not_empty == mandatory, enforced here while modifying
+
+        schema.update({
+            'agency_program': [tk.get_validator('ignore_missing'),
+                               tk.get_converter('convert_to_extras')],
+            'contact_point': [tk.get_converter('convert_to_extras'),
+                              tk.get_validator('not_empty')],
+            'spatial_coverage': [tk.get_converter('convert_to_extras'),
+                                 tk.get_validator('not_empty')],
+            'granularity': [tk.get_converter('convert_to_extras'),
+                            tk.get_validator('not_empty')],
+            'jurisdiction': [tk.get_converter('convert_to_extras'),
+                             tk.get_validator('not_empty')],
+            'temporal_coverage': [tk.get_converter('convert_to_extras'),
+                                  tk.get_validator('not_empty')],
+            'data_state': [tk.get_converter('convert_to_extras'),
+                           tk.get_validator('not_empty')],
+            'update_freq': [tk.get_converter('convert_to_extras'),
+                            tk.get_validator('not_empty')]
+        })
+        return schema
+
+    # These methods just record how many times they're called, for testing
+    # purposes.
+    # TODO: It might be better to test that custom templates returned by
+    # these methods are actually used, not just that the methods get
+    # called.
+
+    def setup_template_variables(self, context, data_dict):
+        return super(ExampleIDatasetFormPlugin, self).setup_template_variables(
+            context, data_dict)
+
+    def new_template(self):
+        return super(ExampleIDatasetFormPlugin, self).new_template()
+
+    def read_template(self):
+        return super(ExampleIDatasetFormPlugin, self).read_template()
+
+    def edit_template(self):
+        return super(ExampleIDatasetFormPlugin, self).edit_template()
+
+    def search_template(self):
+        return super(ExampleIDatasetFormPlugin, self).search_template()
+
+    def history_template(self):
+        return super(ExampleIDatasetFormPlugin, self).history_template()
+
+    def package_form(self):
+        return super(ExampleIDatasetFormPlugin, self).package_form()
+
+