Fix image attachments through the form

app/forms/concerns/decidim/accountability_simple/admin/result_form_extensions.rb

@@ -29,11 +29,33 @@ module ResultFormExtensions
 
           validates :main_image, passthru: {
             to: Decidim::Accountability::Result,
-            with: { component: ->(form) { form.current_component } }
+            with: {
+              # When the image validations are done through the validation
+              # endpoint, the component is unknown and would cause the
+              # validations to fail because the component would not exist.
+              component: lambda do |form|
+                Decidim::Component.new(
+                  participatory_space: Decidim::ParticipatoryProcess.new(
+                    organization: form.current_organization
+                  )
+                )
+              end
+            }
           }
           validates :list_image, passthru: {
             to: Decidim::Accountability::Result,
-            with: { component: ->(form) { form.current_component } }
+            with: {
+              # When the image validations are done through the validation
+              # endpoint, the component is unknown and would cause the
+              # validations to fail because the component would not exist.
+              component: lambda do |form|
+                Decidim::Component.new(
+                  participatory_space: Decidim::ParticipatoryProcess.new(
+                    organization: form.current_organization
+                  )
+                )
+              end
+            }
           }
 
           validates_locations_for Decidim::Accountability::Result

spec/requests/admin_validates_result_images_spec.rb

@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+describe "Admin validates result images" do # rubocop:disable RSpec/DescribeClass
+  include Decidim::ComponentPathHelper
+
+  let(:user) { create(:user, :confirmed, :admin) }
+
+  let(:headers) { { "HOST" => user.organization.host } }
+
+  before do
+    login_as user, scope: :user
+  end
+
+  describe "POST create" do
+    let(:request_path) { Decidim::Core::Engine.routes.url_helpers.upload_validations_path }
+
+    let(:blob) do
+      ActiveStorage::Blob.create_and_upload!(
+        io: File.open(Decidim::Dev.asset("city.jpeg")),
+        filename: "city.jpeg",
+        content_type: "image/jpeg"
+      )
+    end
+
+    %w(main_image list_image).each do |property|
+      context "with #{property}" do
+        let(:params) do
+          {
+            resource_class: "Decidim::Accountability::Result",
+            property: property,
+            blob: blob.signed_id,
+            form_class: "Decidim::Accountability::Admin::ResultForm"
+          }
+        end
+
+        it "validates the image" do
+          post(request_path, params: params, headers: headers)
+
+          expect(response).to have_http_status(:ok)
+
+          messages = JSON.parse(response.body)
+          expect(messages).to be_empty
+        end
+      end
+    end
+  end
+end