Fixes Plone Site serialization when there is a field with read_permis…

…sion set (Fixes #1830)

news/1830.bugfix

@@ -0,0 +1 @@
+Fixes Plone Site serialization when there is a field with read_permission set [@ericof]

src/plone/restapi/serializer/site.py

@@ -4,15 +4,17 @@
 from plone.dexterity.utils import iterSchemata
 from plone.restapi.batching import HypermediaBatch
 from plone.restapi.bbb import IPloneSiteRoot
-from plone.restapi.blocks import visit_blocks, iter_block_transform_handlers
+from plone.restapi.blocks import iter_block_transform_handlers
+from plone.restapi.blocks import visit_blocks
+from plone.restapi.interfaces import IBlockFieldSerializationTransformer
 from plone.restapi.interfaces import IFieldSerializer
 from plone.restapi.interfaces import ISerializeToJson
 from plone.restapi.interfaces import ISerializeToJsonSummary
-from plone.restapi.interfaces import IBlockFieldSerializationTransformer
 from plone.restapi.serializer.converters import json_compatible
+from plone.restapi.serializer.dxcontent import get_allow_discussion_value
 from plone.restapi.serializer.expansion import expandable_elements
-from plone.restapi.services.locking import lock_info
 from plone.restapi.serializer.utils import get_portal_type_title
+from plone.restapi.services.locking import lock_info
 from plone.supermodel.utils import mergedTaggedValueDict
 from Products.CMFCore.utils import getToolByName
 from zope.component import adapter
@@ -23,7 +25,6 @@
 from zope.interface import Interface
 from zope.schema import getFields
 from zope.security.interfaces import IPermission
-from plone.restapi.serializer.dxcontent import get_allow_discussion_value
 
 import json
 
@@ -39,6 +40,7 @@ class SerializeSiteRootToJson:
     def __init__(self, context, request):
         self.context = context
         self.request = request
+        self.permission_cache = {}
 
     def _build_query(self):
         path = "/".join(self.context.getPhysicalPath())

src/plone/restapi/tests/dxtypes.py

@@ -312,6 +312,9 @@ class ITestBehavior(model.Schema):
     test_behavior_field = schema.TextLine(required=False)
     # Add nav_title to test if it gets substituted in Navigation service
     nav_title = schema.TextLine(required=False)
+    # Add a field with read permission set
+    test_secure_field = schema.TextLine(required=False)
+    read_permission(test_secure_field="cmf.ManagePortal")
 
 
 @provider(IFormFieldProvider)

src/plone/restapi/tests/test_site_serializer.py

@@ -38,6 +38,7 @@ def setUp(self):
         if fti is not None:
             behavior_list = [a for a in fti.behaviors]
             behavior_list.append("volto.blocks")
+            behavior_list.append("tests.restapi.test_behavior")
             fti.behaviors = tuple(behavior_list)
             # Invalidating the cache is required for the FTI to be applied
             # on the existing object