[#85] Add support for custom metadata on datasets

Allows to provide arbitrary key/value pairs. Support for harvesting them
and displaying them.

Requires ckan/ckan#1894

ckanext/glasgow/logic/schema.py

@@ -130,6 +130,12 @@ def convert_ckan_dataset_to_ec_dataset(ckan_dict):
     elif ckan_dict.get('tags_string'):
         ec_dict['Tags'] = ckan_dict.get('tags_string')
 
+    # Arbitrary extras
+    ec_dict['Metadata'] = {}
+    for extra in ckan_dict.get('extras', []):
+        if extra['key'] not in ckan_dict and not extra['key'].startswith('harvest_'):
+            ec_dict['Metadata'][extra['key']] = extra['value']
+
     return ec_dict
 
 
@@ -149,6 +155,13 @@ def convert_ec_dataset_to_ckan_dataset(ec_dict):
     if ckan_dict.get('id'):
         ckan_dict['id'] = unicode(ckan_dict['id'])
 
+    # Arbitrary stuff stored as extras
+    ec_keys = [v for k, v in ckan_to_ec_dataset_mapping.iteritems()]
+    ckan_dict['extras'] = []
+    for key, value in ec_dict.iteritems():
+        if key not in ec_keys:
+            ckan_dict['extras'].append({'key': key, 'value': value})
+
     return ckan_dict
 
 

ckanext/glasgow/theme/templates/package/snippets/additional_info.html

@@ -63,4 +63,27 @@ <h3>{{ _('Metadata') }}</h3>
       {% endblock %}
     </tbody>
   </table>
+
+  <h3>{{ _('Custom Metadata') }}</h3>
+  <table class="table table-striped table-bordered table-condensed">
+    <thead>
+      <tr>
+        <th scope="col">{{ _('Field') }}</th>
+        <th scope="col">{{ _('Value') }}</th>
+      </tr>
+    </thead>
+    <tbody>
+      {% for extra in pkg_dict.get('extras', []) %}
+        {% if not extra['key'].startswith('harvest_') %}
+          <tr>
+            <th scope="row" class="dataset-label">{{ extra['key'] }}</th>
+            <td class="dataset-details">{{ extra['value'] }}</td>
+          </tr>
+
+        {% endif %}
+      {% endfor %}
+    </tbody>
+  </table>
+
+
 </section>

ckanext/glasgow/theme/templates/package/snippets/package_basic_fields.html

@@ -92,6 +92,7 @@
   {# Standard Version #}
   {{ form.input('standard_version', label=_('Standard Version'), id='field-standard_version', value=data.standard_version, error=errors.standard_version, classes=['control-medium']) }}
 
+  {% snippet 'snippets/custom_form_fields.html', extras=data.extras, errors=errors, limit=3 %}
 </fieldset>
 
 {% set dataset_is_draft = data.get('state', 'draft').startswith('draft') or data.get('state', 'none') ==  'none' %}