Changeset 7107 for main

Timestamp:

14 Nov 2011, 08:18:15 (13 years ago)

Author:

Henrik Bettermann

Message:

Implement file deletion.

Show file link only if file exists.

Location:

main/waeup.sirp/trunk/src/waeup/sirp/students

Files:

• browser.py (modified) (1 diff)
• browser_templates/filedisplay.pt (modified) (1 diff)
• browser_templates/fileupload.pt (modified) (1 diff)
• viewlets.py (modified) (3 diffs)

main/waeup.sirp/trunk/src/waeup/sirp/students/browser.py

@@ -471 +471 @@
     pnav = 4
     files_changed = []
+    files_deleted = []
 
     form_fields['date_of_birth'].custom_widget = FriendlyDateWidget('le-year')

main/waeup.sirp/trunk/src/waeup/sirp/students/browser_templates/filedisplay.pt

@@ -1 @@
-<tr>
+<tr tal:condition = "viewlet/file_exists">
   <td class="label">
     <label i18n:translate="">

main/waeup.sirp/trunk/src/waeup/sirp/students/browser_templates/fileupload.pt

@@ -7 +7 @@
   <td class="field">
     <span class="widget">
-      <a tal:attributes="href viewlet/download_name"
-         tal:content="viewlet/download_name"
-         target="image">
-        LINK
-      </a>
-      <br />
+      <tal:file tal:condition="viewlet/file_exists">
+        <input type="submit" id="delete"
+               name="delete" value="Delete file" class="button" />
+        <a tal:attributes="href viewlet/download_name"
+           tal:content="viewlet/download_name"
+           target="image">
+          LINK
+        </a>
+        <br /><br />
+      </tal:file>
+      Upload new file:<br />
       <input type="file" tal:attributes="name viewlet/input_name"/>
       <br />

main/waeup.sirp/trunk/src/waeup/sirp/students/viewlets.py

@@ -198 +198 @@
         rel_link = '/students/%s' % self.request.principal.id
         return self.view.application_url() + rel_link
+
+def handle_file_delete(context, view, download_name):
+    """Handle deletion of student file.
+
+    """
+    store = getUtility(IExtFileStore)
+    store.deleteFileByContext(context, attr=download_name)
+    view.flash('File %s deleted.' % download_name)
+    return
 
 def handle_file_upload(upload, context, view, max_size, download_name=None):
@@ -248 +257 @@
     download_name = u'filename.jpg'
 
+    @property
+    def file_exists(self):
+        image = getUtility(IExtFileStore).getFileByContext(
+            self.context, attr=self.download_name)
+        if image:
+            return True
+        else:
+            return False
+
 class FileUpload(FileDisplay):
     """Base upload viewlet.
@@ -262 +280 @@
     def update(self):
         self.max_upload_size = string_from_bytes(self.mus)
+        delete = self.request.form.get('delete', None)
+        if delete:
+            self.view.files_deleted += self.download_name
+            handle_file_delete(
+                context=self.context, view=self.view,
+                download_name=self.download_name)
+            self.view.redirect(
+                self.view.url(self.context, self.view.__name__))
+            return
         upload = self.request.form.get(self.input_name, None)
         if upload: