Download miniatures with original filename

CHANGES.rst

@@ -4,6 +4,8 @@ Changelog
 5.9.1 (unreleased)
 ------------------
 
+- Customize @download view to allow downloading miniature images with their original filename and not with miniature as filename.
+  [cekk]
 - fix file:/// as external link in summary
   [mamico]
 

src/redturtle/volto/browser/configure.zcml

@@ -72,6 +72,14 @@
       layer="redturtle.volto.interfaces.IRedturtleVoltoLayer"
       />
 
+  <!-- override @@download view -->
+  <browser:page
+      name="download"
+      for="*"
+      class=".download.Download"
+      permission="zope2.View"
+      layer="redturtle.volto.interfaces.IRedturtleVoltoLayer"
+      />
   <browser:page
       name="document_view"
       template="templates/document.pt"

src/redturtle/volto/browser/download.py

@@ -0,0 +1,34 @@
+from plone import api
+from plone.namedfile.browser import Download as BaseDownload
+from plone.namedfile.utils import set_headers
+
+
+class Download(BaseDownload):
+    """
+    Customization to allow downloading miniature images with their original
+    filename and not with miniature as filename.
+    """
+
+    def set_headers(self, file):
+        """
+        in self.filename we have the miniature name
+        """
+        filename = getattr(file, "filename", None)
+        if self.filename:
+            # we are downloading a miniature
+            filename = f"{self.filename}_{filename}"
+        set_headers(file, self.request.response, filename=filename)
+
+    def _getFile(self):
+        """
+        in self.filename we have the miniature name
+        """
+        if self.filename:
+            # we are downloading a miniature
+            view = api.content.get_view(
+                name="images", context=self.context, request=self.request
+            )
+            scale = view.scale(scale=self.filename, fieldname=self.fieldname)
+            if scale:
+                return scale.data
+        return super()._getFile()