Add a constance setting to show a site announcement

Add the ANNOUNCEMENT_TEXT setting to constance with the default as
a blank string: "". If the setting is set to a non-blank string,
then show an alert with the announcement. Otherwise, do not show any
alert. Add tests.

config/settings/base.py

@@ -207,6 +207,7 @@
                 "django.template.context_processors.static",
                 "django.template.context_processors.tz",
                 "django.contrib.messages.context_processors.messages",
+                "constance.context_processors.config",
                 "primed.utils.context_processors.settings_context",
             ],
         },
@@ -373,8 +374,9 @@
 # django-constance
 # ------------------------------------------------------------------------------
 CONSTANCE_CONFIG = {
-    "SITE_ANNOUNCEMENT": ("", "Site-wide announcement message", str),
+    "ANNOUNCEMENT_TEXT": ("", "Site-wide announcement message", str),
 }
+
 CONSTANCE_BACKEND = "constance.backends.database.DatabaseBackend"
 CONSTANCE_IGNORE_ADMIN_VERSION_CHECK = True
 # CONSTANCE_DATABASE_CACHE_BACKEND = "default"

primed/primed_anvil/tests/test_views.py

@@ -3,6 +3,7 @@
 from anvil_consortium_manager import models as acm_models
 from anvil_consortium_manager.tests.factories import AccountFactory
 from anvil_consortium_manager.views import AccountList
+from constance.test import override_config
 from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.contrib.auth.models import Permission
@@ -169,6 +170,24 @@ def test_view_links(self):
             response, '"{}"'.format(reverse("anvil_consortium_manager:index"))
         )
 
+    def test_site_announcement_no_text(self):
+        self.client.force_login(self.user)
+        response = self.client.get(self.get_url())
+        self.assertNotContains(response, """id="alert-announcement""")
+
+    @override_config(ANNOUNCEMENT_TEXT="This is a test announcement")
+    def test_site_announcement_text(self):
+        self.client.force_login(self.user)
+        response = self.client.get(self.get_url())
+        self.assertContains(response, """id="alert-announcement""")
+        self.assertContains(response, "This is a test announcement")
+
+    @override_config(ANNOUNCEMENT_TEXT="This is a test announcement")
+    def test_site_announcement_text_unauthenticated_user(self):
+        response = self.client.get(self.get_url(), follow=True)
+        self.assertContains(response, """id="alert-announcement""")
+        self.assertContains(response, "This is a test announcement")
+
 
 class StudyDetailTest(TestCase):
     """Tests for the StudyDetail view."""

primed/templates/base.html

@@ -111,18 +111,25 @@
     <main class="flex-shrink-0">
       <div class="container">
 
-    {% if request.user.is_authenticated and not request.user.account %}
-    <div class="alert alert-warning" role="alert">
-      <i class="bi bi-exclamation-triangle-fill me-1"></i>
-      You must <a href="{% url 'anvil_consortium_manager:accounts:link' %}">link your AnVIL account</a> before you can access any data on AnVIL.
-    </div>
+      {% if config.ANNOUNCEMENT_TEXT %}
+        <div class="alert alert-info" role="alert" id="alert-announcement">
+          <i class="bi bi-megaphone-fill me-1"></i>
+          {{ config.ANNOUNCEMENT_TEXT }}
+        </div>
+      {% endif %}
+
+      {% if request.user.is_authenticated and not request.user.account %}
+      <div class="alert alert-warning" role="alert">
+        <i class="bi bi-exclamation-triangle-fill me-1"></i>
+        You must <a href="{% url 'anvil_consortium_manager:accounts:link' %}">link your AnVIL account</a> before you can access any data on AnVIL.
+      </div>
     {% endif %}
 
     {% if messages %}
-    {% for message in messages %}
-        <div class="alert {% if message.tags %}alert-{{ message.tags }}{% endif %} alert-dismissible fade show" role="alert">{{ message }}<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button></div>
-    {% endfor %}
-{% endif %}
+      {% for message in messages %}
+          <div class="alert {% if message.tags %}alert-{{ message.tags }}{% endif %} alert-dismissible fade show" role="alert">{{ message }}<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button></div>
+      {% endfor %}
+    {% endif %}
 
     {% block extra_navbar %}
     {% endblock %}