Fix blog newsletter signup id on translated pages

network-api/networkapi/wagtailpages/pagemodels/customblocks/newsletter_signup_block.py

@@ -1,4 +1,5 @@
 from wagtail import blocks
+from wagtail.models import Locale
 from wagtail.snippets.blocks import SnippetChooserBlock
 
 
@@ -13,6 +14,18 @@ class Meta:
 class BlogNewsletterSignupBlock(blocks.StructBlock):
     signup = SnippetChooserBlock("wagtailpages.BlogSignup")
 
+    def get_context(self, value, parent_context=None):
+        context = super().get_context(value, parent_context)
+
+        signup = value.get("signup")
+
+        if signup:
+            # Get the default locale signup and pass the signup id back to the context
+            unlocalized_signup = signup.get_translation_or_none(Locale.get_default()) or signup
+            context["unlocalized_signupid"] = unlocalized_signup.id
+
+        return context
+
     class Meta:
         icon = "placeholder"
         template = "wagtailpages/blocks/blog_newsletter_signup_block.html"

network-api/networkapi/wagtailpages/templates/wagtailpages/blocks/blog_newsletter_signup_block.html

@@ -8,7 +8,7 @@
          data-module-type="default"
          data-form-style="blog-body"
          data-form-position="blog-body"
-         data-signup-id="{{ self.signup.id | unlocalize }}"
+         data-signup-id="{{ unlocalized_signupid }}"
          data-button-text="{% trans "Sign up" context "Submit button for newsletter signup form" %}"
          data-cta-header="{{ self.signup.header | escape }}"
          data-cta-description="{{ self.signup.description | escape }}"