Changeset 6372 for main/waeup.sirp/trunk/src/waeup/sirp/utils/helpers.py

Timestamp:

15 Jun 2011, 23:19:58 (13 years ago)

Author:

uli

Message:

Add method to get principal without request (use only in case of
emergency!).

File:

• main/waeup.sirp/trunk/src/waeup/sirp/utils/helpers.py (modified) (2 diffs)

main/waeup.sirp/trunk/src/waeup/sirp/utils/helpers.py

@@ -12 +12 @@
 from zope.schema import getFieldNames
 from zope.schema.fieldproperty import FieldProperty
+from zope.security.interfaces import NoInteraction
+from zope.security.management import getInteraction
+
 
 def removeFileOrDirectory(filepath):
@@ -363 +366 @@
         setattr(cls, field_name, FieldProperty(iface[field_name]))
     return cls
+
+def get_current_principal():
+    """Get the 'current' principal.
+
+    This method works without a request. Examining a request is the
+    regular (and recommended) way to get a principal involved
+    'currently'.
+
+    Use this method only if you really have no access to the current
+    request.
+
+    Returns ``None`` when no principal is involved (for instance
+    during tests).
+    """
+    try:
+        principal = getInteraction().participations[0].principal
+    except NoInteraction:
+        return None
+    except IndexError: # No participations present
+        return None
+    return principal