Merge pull request #1439 from alphagov/dvla-endpoint

Add platform–admin-only page to preview DVLA code

app/main/views/templates.py

@@ -9,12 +9,14 @@ from flask import (
     flash,
     abort,
     json,
+    Response,
 )
 from flask_login import login_required, current_user
 from dateutil.parser import parse
 
 from notifications_utils.formatters import escape_html
 from notifications_utils.recipients import first_column_headings
+from notifications_utils.template import LetterDVLATemplate
 from notifications_python_client.errors import HTTPError
 
 from app.main import main
@@ -146,6 +148,25 @@ def choose_template(service_id, template_type='all'):
     )
 
 
+@main.route("/services/<service_id>/templates/<template_id>/as-dvla")
+@login_required
+@user_has_permissions(admin_override=True)
+def view_template_as_dvla_markup(service_id, template_id):
+
+    template = service_api_client.get_service_template(service_id, str(template_id))['data']
+
+    if template['template_type'] != 'letter':
+        abort(404)
+
+    return Response(
+        str(LetterDVLATemplate(
+            template,
+            notification_reference=1,
+        )).replace('<cr>', '<cr>\n'),
+        mimetype='text/plain',
+    )
+
+
 @main.route("/services/<service_id>/templates/<template_id>.<filetype>")
 @login_required
 @user_has_permissions('view_activity', admin_override=True)