Add new connections attribute to Places JSON

Products/PleiadesEntity/browser/adapters/configure.zcml

@@ -4,6 +4,10 @@
   i18n_domain="Products.PleiadesEntity"
   >
 
+  <adapter
+    for="Products.PleiadesEntity.content.interfaces.IConnection"
+    factory=".connection.ConnectionExportAdapter" />
+
   <adapter
     for="Products.CMFCore.interfaces.IContentish"
     factory=".ContentExportAdapter" />

Products/PleiadesEntity/browser/adapters/connection.py

@@ -0,0 +1,32 @@
+from Products.PleiadesEntity.time import to_ad
+from . import ContentExportAdapter
+from . import PlaceSubObjectExportAdapter
+from . import TemporalExportAdapter
+from . import WorkExportAdapter
+from . import archetypes_getter
+from . import get_export_adapter
+from . import memoize_all_methods
+
+
+@memoize_all_methods
+class ConnectionExportAdapter(
+    ContentExportAdapter,
+    WorkExportAdapter,
+    TemporalExportAdapter,
+    PlaceSubObjectExportAdapter):
+
+    associationCertainty = archetypes_getter('associationCertainty')
+    details = archetypes_getter('text')
+
+    connectionType = archetypes_getter('relationshipType')
+
+    def connectionTypeURI(self):
+        return "{}/relationship-types/{}".format(
+            self.context.restrictedTraverse('vocabularies').aq_inner.absolute_url(),
+            self.context.getRelationshipType()
+        )
+
+    def connectsTo(self):
+        target = self.context.getConnection()
+        adapter = get_export_adapter(target)
+        return adapter.uri()

Products/PleiadesEntity/browser/adapters/place.py

@@ -27,6 +27,8 @@ def connectsWith(self):
             for id in (self._connectsWith() + self._hasConnectionsWith())
         ]
 
+    connections = export_children('Connection')
+
     def reprPoint(self):
         value = self.brain.reprPt
         if not value: