views: ensure only one cache partition is defined

Add validation for the case where the user defines more than one
CACHE partition in the Partition and Format form.

1 files changed, 7 insertions, 3 deletions

diff --git a/ogcp/views.py b/ogcp/views.py
index 77402d6..c756ac9 100644
--- a/ogcp/views.py
+++ b/ogcp/views.py
@@ -642,14 +642,18 @@ def action_setup_show():
 def action_setup_modify():
     form = SetupForm(request.form)
     if form.validate():
-        has_cache=False
+        cache_count = 0
         for partition in form.partitions:
             if partition.part_type.data == 'CACHE':
-                has_cache=True
-        if not has_cache:
+                cache_count += 1
+        if cache_count == 0:
             flash(_(f'Missing cache partition'), category='error')
             return redirect(url_for('commands'))
 
+        if cache_count > 1:
+            flash(_(f'More than one cache partition is not supported'), category='error')
+            return redirect(url_for('commands'))
+
         ips = form.ips.data.split(' ')
 
         payload = {'clients': ips,