[PATCH manager v2] ui: sdn: fabrics: node edit: prevent adding multiple ipv6 columns

[Dominik Csapak <d.csapak@proxmox.com>]

modifying a class member is always dangerous, since it modifies the
object on the original class prototype, so pushing into it happens on
every instance creation. This means every time 'Add Node' is clicked
for a fabric with ipv6 support another ipv6 column is added.

To prevent this, copy the list of common columns in initComponent
and push into that instead.

Slightly changes the handling of additionalColumns so we don't copy the
common columns again with 'concat'.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
changes from v1:
* don't move the commonColumns out of the class definition but only copy
  it in initComponent, don't modify the original.

 www/manager6/sdn/fabrics/InterfacePanel.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/www/manager6/sdn/fabrics/InterfacePanel.js b/www/manager6/sdn/fabrics/InterfacePanel.js
index 5632104a..303376e4 100644
--- a/www/manager6/sdn/fabrics/InterfacePanel.js
+++ b/www/manager6/sdn/fabrics/InterfacePanel.js
@@ -110,8 +110,10 @@ Ext.define('PVE.sdn.Fabric.InterfacePanel', {
     initComponent: function () {
         let me = this;
 
+        let columns = [...me.commonColumns];
+
         if (me.hasIpv6Support) {
-            me.commonColumns.push({
+            columns.push({
                 text: gettext('IPv6'),
                 xtype: 'widgetcolumn',
                 dataIndex: 'ip6',
@@ -126,6 +128,10 @@ Ext.define('PVE.sdn.Fabric.InterfacePanel', {
             });
         }
 
+        if (me.additionalColumns.length > 0) {
+            columns.push(...me.additionalColumns);
+        }
+
         Ext.apply(me, {
             store: Ext.create('Ext.data.Store', {
                 model: 'Pve.sdn.Interface',
@@ -134,7 +140,7 @@ Ext.define('PVE.sdn.Fabric.InterfacePanel', {
                     direction: 'ASC',
                 },
             }),
-            columns: me.commonColumns.concat(me.additionalColumns),
+            columns,
         });
 
         me.callParent();
-- 
2.47.3