fix: Initiatives error 500 when single initiative type

config/i18n-tasks.yml

@@ -205,3 +205,4 @@ ignore_unused:
   - decidim.initiatives.form.add_documents
   - decidim.initiatives.form.edit_documents
   - layouts.decidim.initiative_creation_header.*
+  - decidim.initiatives.signatures.workflows.legacy_signature_handler.*

config/initializers/decidim.rb

@@ -497,26 +497,6 @@
   end
 end
 
-if Decidim.module_installed? :initiatives
-  Decidim::Initiatives.configure do |config|
-    creation_enabled = Decidim::Env.new("INITIATIVES_CREATION_ENABLED", "auto").default_or_present_if_exists
-    config.creation_enabled = creation_enabled.present? unless creation_enabled.to_s == "auto"
-
-    config.minimum_committee_members = Decidim::Env.new("INITIATIVES_MINIMUM_COMMITTEE_MEMBERS", 2).to_i
-    config.default_signature_time_period_length = Decidim::Env.new("INITIATIVES_DEFAULT_SIGNATURE_TIME_PERIOD_LENGTH", 120).to_i
-    config.default_components = Decidim::Env.new("INITIATIVES_DEFAULT_COMPONENTS", "pages, meetings").to_array
-    config.first_notification_percentage = Decidim::Env.new("INITIATIVES_FIRST_NOTIFICATION_PERCENTAGE", 33).to_i
-    config.second_notification_percentage = Decidim::Env.new("INITIATIVES_SECOND_NOTIFICATION_PERCENTAGE", 66).to_i
-    config.stats_cache_expiration_time = Decidim::Env.new("INITIATIVES_STATS_CACHE_EXPIRATION_TIME", 5).to_i.minutes
-    config.max_time_in_validating_state = Decidim::Env.new("INITIATIVES_MAX_TIME_IN_VALIDATING_STATE", 60).to_i.days
-
-    print_enabled = Decidim::Env.new("INITIATIVES_PRINT_ENABLED", "auto").default_or_present_if_exists
-    config.print_enabled = print_enabled.present? unless print_enabled.to_s == "auto"
-
-    config.do_not_require_authorization = Decidim::Env.new("INITIATIVES_DO_NOT_REQUIRE_AUTHORIZATION", false).to_boolean_string == "true"
-  end
-end
-
 Rails.application.config.i18n.available_locales = Decidim.available_locales
 Rails.application.config.i18n.default_locale = Decidim.default_locale
 

config/initializers/decidim_initiatives.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+return unless Decidim.module_installed?(:initiatives)
+
+Decidim::Initiatives.configure do |config|
+  creation_enabled = Decidim::Env.new("INITIATIVES_CREATION_ENABLED", "auto").default_or_present_if_exists
+  config.creation_enabled = creation_enabled.present? unless creation_enabled.to_s == "auto"
+
+  config.minimum_committee_members = Decidim::Env.new("INITIATIVES_MINIMUM_COMMITTEE_MEMBERS", 2).to_i
+  config.default_signature_time_period_length = Decidim::Env.new("INITIATIVES_DEFAULT_SIGNATURE_TIME_PERIOD_LENGTH", 120).to_i
+  config.default_components = Decidim::Env.new("INITIATIVES_DEFAULT_COMPONENTS", "pages, meetings").to_array
+  config.first_notification_percentage = Decidim::Env.new("INITIATIVES_FIRST_NOTIFICATION_PERCENTAGE", 33).to_i
+  config.second_notification_percentage = Decidim::Env.new("INITIATIVES_SECOND_NOTIFICATION_PERCENTAGE", 66).to_i
+  config.stats_cache_expiration_time = Decidim::Env.new("INITIATIVES_STATS_CACHE_EXPIRATION_TIME", 5).to_i.minutes
+  config.max_time_in_validating_state = Decidim::Env.new("INITIATIVES_MAX_TIME_IN_VALIDATING_STATE", 60).to_i.days
+
+  print_enabled = Decidim::Env.new("INITIATIVES_PRINT_ENABLED", "auto").default_or_present_if_exists
+  config.print_enabled = print_enabled.present? unless print_enabled.to_s == "auto"
+
+  config.do_not_require_authorization = Decidim::Env.new("INITIATIVES_DO_NOT_REQUIRE_AUTHORIZATION", false).to_boolean_string == "true"
+end
+
+# Signature workflows (introduced in Decidim 0.31, PR #13729).
+# At least one workflow must be registered for initiative types to be
+# configurable in the admin. The legacy handler reproduces the pre-0.31
+# behaviour and must be available in all environments.
+Decidim::Initiatives::Signatures.register_workflow(:legacy_signature_handler) do |workflow|
+  workflow.form = "Decidim::Initiatives::LegacySignatureHandler"
+  workflow.save_authorizations = false
+  workflow.sms_verification = false
+end

config/locales/en.yml

@@ -514,9 +514,11 @@ en:
         edit_attachments: Edit attachments
         edit_image: Edit image
         image_legend: "(Optional) Add an image"
-      initiatives:
-        index_header:
-          new_initiative: New initiative
+      signatures:
+        workflows:
+          legacy_signature_handler:
+            description: Signature handler based on the old signature feature including the collection of personal data, the SMS step and validating the authorization with dummy_authorization_handler. Modify any parameter to adapt to the configuration used
+            name: Legacy Signature Handler
     like_buttons_cell:
       already_liked: Undo the like
       like: Like

config/locales/fr.yml

@@ -522,9 +522,11 @@ fr:
         edit_attachments: Modifier les pièces jointes
         edit_image: Modifier l'Image
         image_legend: "(Facultatif) Ajouter une image"
-      initiatives:
-        index_header:
-          new_initiative: Nouvelle pétition
+      signatures:
+        workflows:
+          legacy_signature_handler:
+            description: Procédure de signature basée sur l'ancien système de pétitions, incluant la collecte de données personnelles, l'étape de vérification par SMS et la validation de l'autorisation. Modifiez les paramètres de l'initializer pour l'adapter à votre configuration.
+            name: Procédure de signature standard
     like_buttons_cell:
       already_liked: Je n'aime plus
       like: J'aime