Set conditions to create a board decision from a note for board #38884

- User is a member of group Gestion-secretariat-general
- There is no existing board decision related to that note for board

src/pfwbged/policy/browser/create_board_decision.py

@@ -1,6 +1,42 @@
 from five import grok
-from plone import api
 from pfwbged.basecontent.types import INoteForBoard
+from plone import api
+from zc.relation.interfaces import ICatalog
+from zope.component import getUtility
+from zope.intid.interfaces import IIntIds
+
+
+class CanCreateBoardDecision(grok.View):
+    """Create a board decision from a note for board"""
+
+    grok.name('can_create_board_decision')
+    grok.context(INoteForBoard)
+    grok.require("zope2.View")
+
+    def in_gestion_sg(self):
+        return any([group for group in api.group.get_groups(user=api.user.get_current()) if
+                    group.id == 'Gestion-secretariat-general'])
+
+    def board_decision_created(self):
+        """Return true if a board decision has been created for this note for board"""
+        intids = getUtility(IIntIds)
+        catalog = getUtility(ICatalog)
+        try:
+            note_intid = intids.getId(self.context)
+        except KeyError:
+            return False
+        else:
+            return any(catalog.findRelations({'to_id': note_intid,
+                                              'from_attribute': 'related_docs'}))
+
+    def render(self):
+        if not self.in_gestion_sg():
+            return False
+
+        if self.board_decision_created():
+            return False
+
+        return True
 
 
 class CreateBoardDecision(grok.View):