Fix proposal states diff renderer

decidim-proposals/app/services/decidim/proposals/diff_renderer.rb

@@ -22,6 +22,7 @@ def attribute_types
       # Parses the values before parsing the changeset.
       def parse_changeset(attribute, values, type, diff)
         return parse_scope_changeset(attribute, values, type, diff) if type == :scope
+        return parse_state_changeset(attribute, values, type, diff) if attribute == :decidim_proposals_proposal_state_id
 
         values = parse_values(attribute, values)
         old_value = values[0]
@@ -37,6 +38,24 @@ def parse_changeset(attribute, values, type, diff)
         )
       end
 
+
+      def parse_state_changeset(attribute, values, type, diff)
+        return unless diff
+
+        old_state = Decidim::Proposals::ProposalState.find_by(id: values[0])
+        new_state = Decidim::Proposals::ProposalState.find_by(id: values[1])
+
+        diff.update(
+          attribute => {
+            type:,
+            label: I18n.t(attribute, scope: i18n_scope),
+            old_value: old_state ? translated_attribute(old_state.title) : "",
+            new_value: new_state ? translated_attribute(new_state.title) : ""
+          }
+        )
+      end
+
+
       # Handles which values to use when diffing emendations and
       # normalizes line endings of the :body attribute values.
       # Returns and Array of two Strings.

decidim-proposals/config/locales/en.yml

@@ -1,5 +1,6 @@
 ---
 en:
+
   activemodel:
     attributes:
       collaborative_draft:
@@ -13,6 +14,7 @@ en:
         title: Title
         user_group_id: Create collaborative draft as
       proposal:
+        decidim_proposals_proposal_state_id: State
         address: Address
         answer: Answer
         answered_at: Answered at