export/import of nodes basically OK

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@1010 fd906abe-77d9-0310-91a1-e0d9ade77398
2006-01-17 06:50:12 +00:00 · 2006-01-17 06:50:12 +00:00 · 62c5514219
commit 62c5514219
parent 774a8526d0
2 changed files with 139 additions and 0 deletions
--- a/browser/exportimport.pt
+++ b/browser/exportimport.pt
@ -0,0 +1,60 @@
+<tal:show condition="not:view/submit">
+<html metal:use-macro="context/@@standard_macros/view">
+<head>
+</head>
+<body>
+
+  <metal:body fill-slot="body">
+         
+    <h3>Export/Import loops View Nodes</h3>
+
+    <div tal:define="message view/message | request/message | nothing"
+         tal:condition="message"
+         tal:content="message">Message</div>
+
+    <div>&nbsp;</div>
+    <div>
+      This form allows you to export nodes to a
+      file and upload a file created by a content export.
+    </div>
+
+    <form action="." method="post"
+          tal:attributes="action string:${request/URL/-1}/export_nodes.html">
+      <input type="hidden" name="loops.action" value="export" />
+      <div>&nbsp;</div>
+      <h4>Export Nodes</h4>
+      <div>&nbsp;</div>
+      <div class="row">
+        <div class="controls">
+          <input type="submit" name="loops.export" value="Export" />
+        </div>
+      </div>
+    </form>
+    
+    <form action="." method="post" enctype="multipart/form-data"
+          tal:attributes="action request/URL">
+      <input type="hidden" name="loops.action" value="upload" />
+      <div>&nbsp;</div>
+      <h4>Import Nodes</h4>
+      <div class="row">
+        <div class="label">
+          <label for="field.data"
+                 title="The file to be uploaded.">File</label>
+        </div>
+        <div class="field">
+          <input class="fileType" id="field.data" name="field.data"
+                 size="20" type="file" />
+        </div>
+      </div>
+      <div class="row">
+        <div class="controls">
+          <input type="submit" name="loops.upload" value="Upload" />
+        </div>
+      </div>
+    </form>
+    
+  </metal:body>
+
+</body>
+</html>
+</tal:show>
--- a/browser/external.py
+++ b/browser/external.py
@ -0,0 +1,79 @@
+#
+#  Copyright (c) 2006 Helmut Merz helmutm@cy55.de
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+"""
+view class(es) for import/export.
+
+$Id$
+"""
+
+from zope.interface import Interface, implements
+from zope.app import zapi
+from zope.app.pagetemplate.viewpagetemplatefile import ViewPageTemplateFile
+from zope.cachedescriptors.property import Lazy
+from zope.security.proxy import removeSecurityProxy
+from cStringIO import StringIO
+
+from loops.external import IExternalContentSource
+from loops.external import ILoader, IExporter
+
+
+class NodesExportImport(object):
+    """ View providing export and import functionality.
+    """
+
+    def __init__(self, context, request):
+        self.context = removeSecurityProxy(context)
+        self.request = request
+        self.message = u''
+
+    def submit(self):
+        action = self.request.get('loops.action', None)
+        if action:
+            method = getattr(self, action, None)
+            if method:
+                return method()
+        return False
+
+    def export(self):
+        f = StringIO()
+        exporter = IExporter(self.context)
+        exporter.dumpData(f, noclose=True)
+        text = f.getvalue()
+        f.close()
+        self.setDownloadHeader(self.request, text)
+        return text
+
+    def upload(self):
+        data = self.request.get('field.data', None)
+        if not data:
+            return False
+        importer = IExternalContentSource(self.context)
+        text = importer.getData(data)
+        loader = ILoader(self.context)
+        loader.load(text)
+        self.message = u'Content uploaded and imported.'
+        return False
+
+    def setDownloadHeader(self, request, text):
+        response = request.response
+        response.setHeader('Content-Disposition',
+                           'attachment; filename=yeepacontent.dmp')
+        response.setHeader('Content-Type', 'text/plain')
+        response.setHeader('Content-Length', len(text))
+