Integrate custom extra metadata

README.md

@@ -504,6 +504,11 @@ JSON based input. Only JSON objects are supported. The input JSON will be loaded
 ```
 markdown text area and display
 
+```yaml
+  field_name: extras
+  preset: custom_extras
+```
+space for user defined key, value pairs like standard CKAN input. When used the `field_name` must be extras. 
 
 You may define your own presets by adding additional files to the `scheming.presets`
 [configuration setting](#configuration).

ckanext/scheming/plugins.py

@@ -260,6 +260,8 @@ def validate(self, context, data_dict, schema, action):
         composite_convert_fields = []
         for field_list, destination, is_dataset in fg:
             for f in field_list:
+                if is_dataset and f['field_name'] == 'extras':
+                    continue
                 convert_this = is_dataset and f['field_name'] not in schema
                 destination[f['field_name']] = get_validators(
                     f,

ckanext/scheming/presets.json

@@ -152,6 +152,13 @@
         "display_snippet": "select.html",
         "validators": "scheming_required scheming_choices"
       }
+    },
+    {
+      "preset_name": "custom_extras",
+      "values": {
+        "form_snippet": "custom_extras.html",
+        "display_snippet": null
+      }
     }
   ]
 }

ckanext/scheming/templates/scheming/form_snippets/custom_extras.html

@@ -0,0 +1,5 @@
+
+
+
+
+{%- snippet 'snippets/custom_form_fields.html', extras=data.extras, errors=errors, limit=3 -%}

ckanext/scheming/templates/scheming/package/snippets/additional_info.html

@@ -30,4 +30,9 @@
       <td class="dataset-details">{{ _(pkg_dict.state) }}</td>
     </tr>
   {% endif %}
+
+  {% block extras scoped %}
+    {{ super() }}
+  {% endblock %}
+
 {% endblock %}