Fix #30: added instance preferences for name and descriptions

api/funkwhale_api/instance/dynamic_preferences_registry.py

+from django.forms import widgets
+
 from dynamic_preferences import types
 from dynamic_preferences.registries import global_preferences_registry
 
 raven = types.Section('raven')
+instance = types.Section('instance')
+
+
+@global_preferences_registry.register
+class InstanceName(types.StringPreference):
+    show_in_api = True
+    section = instance
+    name = 'name'
+    default = ''
+    help_text = 'Instance public name'
+    verbose_name = 'The public name of your instance'
+
 
+@global_preferences_registry.register
+class InstanceShortDescription(types.StringPreference):
+    show_in_api = True
+    section = instance
+    name = 'short_description'
+    default = ''
+    verbose_name = 'Instance succinct description'
+
+
+@global_preferences_registry.register
+class InstanceLongDescription(types.StringPreference):
+    show_in_api = True
+    section = instance
+    name = 'long_description'
+    default = ''
+    help_text = 'Instance long description (markdown allowed)'
+    field_kwargs = {
+        'widget': widgets.Textarea
+    }
 
 @global_preferences_registry.register
 class RavenDSN(types.StringPreference):

api/tests/instance/test_preferences.py

+import pytest
+
 from django.urls import reverse
 
 from dynamic_preferences.api import serializers
@@ -20,3 +22,14 @@ def test_can_list_settings_via_api(preferences, api_client):
     for p in response.data:
         i = '__'.join([p['section'], p['name']])
         assert i in expected_preferences
+
+
+@pytest.mark.parametrize('pref,value', [
+    ('instance__name', 'My instance'),
+    ('instance__short_description', 'For music lovers'),
+    ('instance__long_description', 'For real music lovers'),
+])
+def test_instance_settings(pref, value, preferences):
+    preferences[pref] = value
+
+    assert preferences[pref] == value