Add public_site_url template tag

ops/manifests/manifest-stable.yaml

@@ -20,6 +20,8 @@ applications:
     DJANGO_BASE_URL: https://getgov-stable.app.cloud.gov
     # Tell Django how much stuff to log
     DJANGO_LOG_LEVEL: INFO
+    # Public site base URL
+    GETGOV_PUBLIC_SITE_URL: https://federalist-877ab29f-16f6-4f12-961c-96cf064cf070.sites.pages.cloud.gov/site/cisagov/getgov-home/
   routes:
     - route: getgov-stable.app.cloud.gov
   services:

ops/scripts/manifest-sandbox-template.yaml

@@ -20,6 +20,8 @@ applications:
     DJANGO_BASE_URL: https://getgov-ENVIRONMENT.app.cloud.gov
     # Tell Django how much stuff to log
     DJANGO_LOG_LEVEL: INFO
+    # default public site location
+    GETGOV_PUBLIC_SITE_URL: https://beta.get.gov
   routes:
     - route: getgov-ENVIRONMENT.app.cloud.gov
   services:

src/.env-example

@@ -1,2 +1,3 @@
 DJANGO_SECRET_KEY=""
 DJANGO_SECRET_LOGIN_KEY=""
+GETGOV_PUBLIC_SITE_URL="https://federalist-877ab29f-16f6-4f12-961c-96cf064cf070.sites.pages.cloud.gov/site/cisagov/getgov-home/"

src/docker-compose.yml

@@ -27,6 +27,8 @@ services:
       - DJANGO_DEBUG=True
       # Tell Django where it is being hosted
       - DJANGO_BASE_URL=http://localhost:8080
+      # Public site URL link
+      - GETGOV_PUBLIC_SITE_URL="https://beta.get.gov"
       # Set a username for accessing the registry
       - REGISTRY_CL_ID=nothing
       # Set a password for accessing the registry

src/registrar/config/settings.py

@@ -62,6 +62,9 @@ secret_registry_key = b64decode(secret("REGISTRY_KEY", ""))
 secret_registry_key_passphrase = secret("REGISTRY_KEY_PASSPHRASE", "")
 secret_registry_hostname = secret("REGISTRY_HOSTNAME")
 
+# this needs to exist or a warning will be generated
+secret_getgov_public_site_url = secret("GETGOV_PUBLIC_SITE_URL")
+
 # region: Basic Django Config-----------------------------------------------###
 
 # Build paths inside the project like this: BASE_DIR / "subdir".
@@ -503,6 +506,10 @@ ROOT_URLCONF = "registrar.config.urls"
 # Must be relative and end with "/"
 STATIC_URL = "public/"
 
+# Base URL of our separate static public website. Used by the
+# {% public_site_url subdir/path %} template tag
+GETGOV_PUBLIC_SITE_URL = secret_getgov_public_site_url
+
 # endregion
 # region: Registry----------------------------------------------------------###
 

src/registrar/templates/application_purpose.html

@@ -1,5 +1,5 @@
 {% extends 'application_form.html' %}
-{% load field_helpers %}
+{% load field_helpers url_helpers %}
 
 {% block form_instructions %}
   <p>.Gov domain names are for use on the internet. Don’t register a .gov to simply reserve a 
@@ -8,7 +8,7 @@ domain name or for mainly internal use.</p>
   <p>Describe the reason for your domain request. Explain how you plan to use this domain. 
 Who is your intended audience? Will you use it for a website and/or email? Are you moving 
 your website from another top-level domain (like .com or .org)? 
-Read about <a href="{% url 'todo' %}">activities that are prohibited on .gov domains.</a></p>
+Read about <a href="{% public_site_url 'domains/requirements/' %}">activities that are prohibited on .gov domains.</a></p>
 
 {% endblock %}
 

src/registrar/templatetags/url_helpers.py

@@ -1,6 +1,10 @@
+from urllib.parse import urljoin
+
 from django import template
 from django.urls import reverse
 
+from django.conf import settings
+
 register = template.Library()
 
 
@@ -15,3 +19,15 @@ def startswith(text, starts):
     if isinstance(text, str):
         return text.startswith(starts)
     return False
+
+
+@register.simple_tag
+def public_site_url(url_path):
+    """Make a full URL for this path at our public site.
+
+    The public site base url is set by a GETGOV_PUBLIC_SITE_URL environment
+    variable.
+    """
+    base_url = settings.GETGOV_PUBLIC_SITE_URL
+    public_url = urljoin(base_url, url_path)
+    return public_url