CVS commit (wiking): db.py

[Tomas Cerha]

Update of /var/lib/cvs/wiking/lib/wiking
In directory devel:/tmp/cvs-serv8275/lib/wiking

Modified Files:
	db.py 
Log Message:
Allow dynamic determination of BrowseForm columns.


/var/www/hosts/cvs.freebsoft.org/src/wiking:
Index: ChangeLog
===================================================================
RCS file: /var/lib/cvs/wiking/ChangeLog,v
retrieving revision 1.518
retrieving revision 1.517
diff -u -r1.518 -r1.517
--- ChangeLog	20 May 2009 18:21:45 -0000	1.517
+++ ChangeLog	28 May 2009 15:14:07 -0000	1.518
@@ -1,3 +1,8 @@
+2009-05-28  Tomas Cerha  <cerha at debian.brailcom.xx>
+
+	* lib/wiking/db.py: 
+	Allow dynamic determination of BrowseForm columns.
+
 2009-05-20  Milan Zamazal  <pdm at brailcom.org>
 
 	* lib/wiking/cms/cms.py:
Index: lib/wiking/db.py
===================================================================
RCS file: /var/lib/cvs/wiking/lib/wiking/db.py,v
retrieving revision 1.117
retrieving revision 1.116
diff -u -r1.117 -r1.116
--- lib/wiking/db.py	15 May 2009 19:46:18 -0000	1.116
+++ lib/wiking/db.py	28 May 2009 15:14:07 -0000	1.117
@@ -451,7 +451,32 @@
         return form(self._view, form_record, handler=handler or req.uri(), name=self.name(),
                     hidden=hidden, prefill=prefill, uri_provider=uri_provider, **kwargs)
 
+    def _columns(self, req):
+        """Return the list of BrowseForm columns or None.
+
+        'None' means to use the default list of columns defined by specification.
+
+        Override this metod to dynamically change the list of visible BrowseForm columns.  The
+        default implementation returns 'None'.
+
+        """
+        return None
+
     def _layout(self, req, action, record=None):
+        """Return the form layout as a 'pytis.presentation.GroupSpec' instance or None.
+
+        'None' means to use the default layout defined by specification.
+
+        Arguments:
+          req -- current request
+          action -- name of the action as a string (determines also the form type)
+          record -- the current record instance or None (for 'insert' action)
+
+        Override this metod to dynamically change form layout.  The default implementation returns
+        one of (statical) layouts defined in '_LAYOUTS' (dictionary keyed by action name) or None
+        of no specific layout is defined for given action.
+
+        """
         layout = self._LAYOUT.get(action)
         if isinstance(layout, (tuple, list)):
             layout = pp.GroupSpec(layout, orientation=pp.Orientation.VERTICAL)
@@ -708,7 +733,8 @@
         else:
             form = pw.ListView
         condition = self._binding_condition(binding, record)
-        columns = [c for c in self._view.columns() if c != binding.binding_column()]
+        columns = [c for c in self._columns(req) or self._view.columns()
+                   if c != binding.binding_column()]
         lang = req.prefered_language(raise_error=False)
         if binding.id():
             binding_uri = uri +'/'+ binding.id()
@@ -737,7 +763,8 @@
             return result
         # If this is not a binding forwarded request, display the listing.
         lang = req.prefered_language()
-        content = (self._form(pw.ListView, req, condition=self._condition(req, lang=lang)),
+        content = (self._form(pw.ListView, req, condition=self._condition(req, lang=lang),
+                              columns=self._columns(req)),
                    self._action_menu(req))
         return self._document(req, content, lang=lang, err=err, msg=msg)