Pass view_name=page to custom pages, refs #648

tests/test_html.py

@@ -11,6 +11,7 @@ import json
 import pathlib
 import pytest
 import re
+import textwrap
 import urllib.parse
 
 
@@ -1243,16 +1244,31 @@ def test_base_url_config(base_url, path):
                 }
 
 
-def test_custom_template_page(tmpdir):
+def test_custom_pages(tmpdir):
     template_dir = tmpdir.mkdir("page-templates")
+    extra_plugins = {
+        "view_name.py": textwrap.dedent(
+            """
+    from datasette import hookimpl
+
+    @hookimpl
+    def extra_template_vars(view_name):
+        return {
+            "view_name": view_name,
+        }
+    """
+        )
+    }
     pages_dir = template_dir.mkdir("pages")
-    (pages_dir / "about.html").write_text("ABOUT!", "utf-8")
+    (pages_dir / "about.html").write_text("ABOUT! view_name:{{ view_name }}", "utf-8")
     nested_dir = pages_dir.mkdir("nested")
     (nested_dir / "nest.html").write_text("Nest!", "utf-8")
-    for client in make_app_client(template_dir=str(template_dir)):
+    for client in make_app_client(
+        template_dir=str(template_dir), extra_plugins=extra_plugins
+    ):
         response = client.get("/about")
         assert 200 == response.status
-        assert "ABOUT!" == response.text
+        assert "ABOUT! view_name:page" == response.text
         response = client.get("/nested/nest")
         assert 200 == response.status
         assert "Nest!" == response.text