concept listing improvements: show last author only, avoid duplicates

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@4139 fd906abe-77d9-0310-91a1-e0d9ade77398

browser/common.py

@@ -218,8 +218,6 @@ class BaseView(GenericView, I18NView):
 
     @Lazy
     def modifiedRaw(self):
-        """ get date/time of last modification
-        """
         d = getattr(self.adapted, 'modified', None)
         if not d:
             dc = IZopeDublinCore(self.context)
@@ -234,7 +232,7 @@ class BaseView(GenericView, I18NView):
         return d and d.strftime('%Y-%m-%d %H:%M') or ''
 
     @Lazy
-    def creators(self):
+    def creatorsRaw(self):
         # TODO: use an IAuthorInfo (or similar) adapter
         creators = getattr(self.adapted, 'authors', None) or []
         if not creators:
@@ -246,7 +244,15 @@ class BaseView(GenericView, I18NView):
                     creators.append(principal.title)
                 except PrincipalLookupError:
                     creators.append(c)
-        return ', '.join(creators)
+        return creators
+
+    @Lazy
+    def creators(self):
+        return ', '.join(self.creatorsRaw)
+
+    @Lazy
+    def lastCreator(self):
+        return self.creatorsRaw and self.creatorsRaw[-1] or u''
 
     @Lazy
     def loopsRoot(self):

browser/concept.py

@@ -121,9 +121,15 @@ class BaseRelationView(BaseView):
             self.other = relation.second
         self.context = getVersion(self.context, request)
         self.predicate = relation.predicate
+        self.predicates = [self.predicate]  # allow for more than one relation
         self.relation = relation
+        self.relations = [relation]
         self.request = request
 
+    @Lazy
+    def hash(self):
+        return '%s:%s' % (id(self.relation.first), id(self.relation.second))
+
     @Lazy
     def adapted(self):
         return adapted(self.context, self.languageInfo)
@@ -172,7 +178,7 @@ class BaseRelationView(BaseView):
 
     @Lazy
     def predicateTitle(self):
-        return self.predicate.title
+        return ', ' .join(p.title for p in self.predicates)
 
     @Lazy
     def predicateUrl(self):
@@ -263,7 +269,7 @@ class ConceptView(BaseView):
         instance.view = self
         return instance
 
-    def getChildren(self, topLevelOnly=True, sort=True):
+    def getChildren(self, topLevelOnly=True, sort=True, noDuplicates=True):
         cm = self.loopsRoot.getConceptManager()
         hasType = cm.getTypePredicate()
         params = self.params
@@ -349,6 +355,17 @@ class ConceptView(BaseView):
             from loops.browser.resource import ResourceRelationView
             yield ResourceRelationView(r, self.request, contextIsSecond=True)
 
+    def unique(self, rels):
+        result = Jeep()
+        for r in rels:
+            existing = result.get(r.hash)
+            if existing is not None:
+                existing.relations.append(r)
+                existing.predicates.append(r.predicate)
+            else:
+                result[r.hash] = r
+        return result.values()
+
     @Lazy
     def view(self):
         context = self.context

browser/concept_macros.pt

@@ -91,7 +91,7 @@
 <metal:children define-macro="conceptchildren">
       <div tal:attributes="class string:content-$level;
                            ondblclick python: item.openEditWindow('configure.html')"
-           tal:define="children python: list(item.children())"
+           tal:define="children python: list(item.unique(item.children()))"
            tal:condition="children">
         <h2 i18n:translate=""
             tal:condition="show_headline|python:True">Children</h2>
@@ -107,7 +107,8 @@
           <tal:items repeat="related children">
             <tal:item define="class python: repeat['related'].odd() and 'even' or 'odd';
                               description related/description;
-                              predicate related/predicate/title|string:;
+                              xx_predicate related/predicate/title|string:;
+                              predicate related/predicateTitle;
                               info python: ' | '.join(
                                     t for t in (description, predicate) if t)">
               <tr tal:attributes="class class">
@@ -120,8 +121,9 @@
                 </td>
                 <td class="center"><span tal:content="related/typeTitle"
                           i18n:translate="">Type</span></td>
-                <td><span tal:replace="related/modified">Type</span></td>
-                <td><span tal:replace="related/creators">Type</span></td>
+                <td><span tal:replace="related/modified">2011-01-10</span></td>
+                <td tal:attributes="title related/creators">
+                  <span tal:replace="related/lastCreator">Author</span></td>
                 <td class="nowrap center"
                     tal:define="target nocall:related;
                                 style nothing"
@@ -198,7 +200,8 @@
                   <span tal:replace="related/context/sizeForDisplay">2 MB</span>
                 </td>
                 <td><span tal:replace="related/modified">2007-03-30</span></td>
-                <td><span tal:replace="related/creators">John</span></td>
+                <td tal:attributes="title related/creators">
+                  <span tal:replace="related/lastCreator">Author</span></td>
                 <td class="nowrap center"
                     tal:define="target nocall:related;
                                 style nothing"