- RAMCacheManager: Allow invalidation of a cache entry from the

  Statistics view in the ZMI

doc/CHANGES.txt

@@ -32,6 +32,9 @@ Zope Changes
         the whole request in memory or just a chunk inside
         webdav.NullResource.PUT().
 
+      - RAMCacheManager: Allow invalidation of a cache entry from the
+        Statistics view in the ZMI
+
     Bugs fixed
 
       - ZPublisher: changed some hardcoded 'latin1' arguments to 'iso-8859-15'

lib/python/Products/StandardCacheManagers/RAMCacheManager.py

@@ -346,7 +346,7 @@ class RAMCacheManager (CacheManager, SimpleItem):
                                      'manage_stats',
                                      'getCacheReport',
                                      'sort_link',)),
-        ('Change cache managers', ('manage_editProps',), ('Manager',)),
+        ('Change cache managers', ('manage_editProps','manage_invalidate'), ('Manager',)),
         )
 
     manage_options = (
@@ -451,6 +451,20 @@ class RAMCacheManager (CacheManager, SimpleItem):
         url = url + '&sort_reverse=' + (newsr and '1' or '0')
         return '<a href="%s">%s</a>' % (escape(url, 1), escape(name))
 
+    def manage_invalidate(self, paths, REQUEST=None):
+        """ ZMI helper to invalidate an entry """
+        for path in paths:
+            try:
+                ob = self.unrestrictedTraverse(path)
+            except (AttributeError, KeyError):
+                pass
+
+            ob.ZCacheable_invalidate()
+
+        if REQUEST is not None:
+            msg = 'Cache entries invalidated'
+            return self.manage_stats(manage_tabs_message=msg)
+
 Globals.default__class_init__(RAMCacheManager)
 
 

lib/python/Products/StandardCacheManagers/dtml/statsRCM.dtml

@@ -2,15 +2,20 @@
 <dtml-var manage_tabs>
 
 <p class="form-help">
-Memory usage is approximate. It is based on the pickled value of the 
-cached data. The cache is cleaned up by removing the least frequently 
-accessed entries since the last cleanup operation. The determination 
-is made using the <em>recent hits</em> counter.
+  Memory usage is approximate. It is based on the pickled value of the 
+  cached data. The cache is cleaned up by removing the least frequently 
+  accessed entries since the last cleanup operation. The determination 
+  is made using the <em>recent hits</em> counter.
 </p>
 
 <dtml-if getCacheReport>
-<table width="100%" cellspacing="0" cellpadding="2" border="0">
-<tr class="list-header">
+
+  <form method="post" action="manage_invalidate">
+
+    <table width="100%" cellspacing="0" cellpadding="2" border="0">
+    <tr class="list-header">
+      <td align="left" valign="top" class="list-nav" width="16">
+      </td>
       <td align="left" valign="top">
       <div class="list-nav">
       <dtml-var expr="sort_link('Path', 'path')">
@@ -46,13 +51,16 @@ is made using the <em>recent hits</em> counter.
       <dtml-var expr="sort_link('Entries', 'entries')">
       </div>
       </td>
-</tr>
-<dtml-in getCacheReport mapping>
-<dtml-if sequence-odd>
-<tr class="row-normal">
-<dtml-else>
-<tr class="row-hilite">
-</dtml-if>
+    </tr>
+    <dtml-in getCacheReport mapping>
+    <dtml-if sequence-odd>
+    <tr class="row-normal">
+    <dtml-else>
+    <tr class="row-hilite">
+    </dtml-if>
+      <td align="left" valign="top" width="16">
+        <input type="checkbox" name="paths:list" value="&dtml-path;" />
+      </td>
       <td align="left" valign="top">
       <div class="list-item">
       <a href="&dtml-path;/ZCacheable_manage">&dtml-path;</a>
@@ -88,8 +96,19 @@ is made using the <em>recent hits</em> counter.
       &dtml-entries;
       </div>
       </td>
-</dtml-in>
-</table>
+      </tr>
+    </dtml-in>
+    
+      <tr>
+        <td width="16"> </td>
+        <td colspan="7">
+          <input type="submit" value=" Remove " />
+        </td>
+      </tr>
+    
+    </table>
+
+  </form>
 
 <dtml-else>
 <p class="form-text">