[ST-2029] apps/exports: Create multiple rows with one imageUrl per row

CHANGELOG.md

@@ -13,6 +13,7 @@ This project (not yet) adheres to [Semantic Versioning](https://semver.org/spec/
 - emails: add `get_from_email()` hook on `EmailBase` so projects can customize
   the sender address without overriding `dispatch()`.
 - exports: add ItemExportWithImageMixin to include images in exports
+- exports: export each image on its own row to keep image links clickable
 
 ### Fixed
 

adhocracy4/exports/mixins/base.py

@@ -5,6 +5,9 @@ class VirtualFieldMixin:
     def get_virtual_fields(self, virtual):
         return virtual
 
+    def get_extra_rows(self, item, names):
+        return []
+
 
 class ExportModelFieldsMixin(VirtualFieldMixin):
     """

adhocracy4/exports/mixins/general.py

@@ -118,7 +118,7 @@ def get_virtual_fields(self, virtual):
             virtual["images"] = _("Images")
         return super().get_virtual_fields(virtual)
 
-    def get_images_data(self, item):
+    def get_images(self, item):
         images = []
 
         if item.image:
@@ -130,4 +130,28 @@ def get_images_data(self, item):
             for url in re.findall(pattern, description):
                 images.append(self.request.build_absolute_uri(url))
 
-        return "; ".join(images) if images else ""
+        return images
+
+    def get_images_data(self, item):
+        images = self.get_images(item)
+        return images[0] if images else ""
+
+    def get_extra_rows(self, item, names):
+        images = self.get_images(item)
+        if len(images) <= 1:
+            return []
+
+        images_index = names.index("images")
+        reference_number_index = (
+            names.index("reference_number") if "reference_number" in names else None
+        )
+        extra_rows = []
+        for url in images[1:]:
+            extra_row = [""] * len(names)
+            extra_row[images_index] = url
+            if reference_number_index is not None:
+                extra_row[reference_number_index] = self.get_field_data(
+                    item, "reference_number"
+                )
+            extra_rows.append(extra_row)
+        return extra_rows

adhocracy4/exports/views.py

@@ -72,7 +72,10 @@ def export_rows(self):
         names, _ = self.get_fields()
 
         for item in self.get_object_list():
-            yield [self.get_field_data(item, name) for name in names]
+            row = [self.get_field_data(item, name) for name in names]
+            yield row
+            for extra_row in self.get_extra_rows(item, names):
+                yield extra_row
 
     def get_field_data(self, item, name):
         # Use custom getters if they are defined