[pbs-devel] [PATCH proxmox-backup v2 2/2] web: disallow datastore in root, add reuse-datastore flag

[Thomas Lamprecht]

Am 12/06/2024 um 15:22 schrieb Gabriel Goller:
> Disallows creating a datastore in root on the frontend side, by
> filtering the '/' path. Add reuse-flag to permit us to open existing
> datastores.
> 
> Signed-off-by: Gabriel Goller <g.goller at proxmox.com>
> ---
>  www/window/DataStoreEdit.js | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/www/window/DataStoreEdit.js b/www/window/DataStoreEdit.js
> index b6115460..2565688e 100644
> --- a/www/window/DataStoreEdit.js
> +++ b/www/window/DataStoreEdit.js
> @@ -61,6 +61,17 @@ Ext.define('PBS.DataStoreEdit', {
>  			allowBlank: false,
>  			fieldLabel: gettext('Backing Path'),
>  			emptyText: gettext('An absolute path'),
> +			validator: function(val) {
> +			    if (val.trim() === '/') {
> +				return false;
> +			    }
> +			    return true;

above could be reduced to:

validator: val => val?.trim() !== '/',


Note also the null check, not 100% sure from top of my head, but when
going from some value to deleting the field content (CTRL + A; DEL)
the validator might be called with a null/undefined value, or did you
check and ensure that it's then always an empty string?

Besides that, this seems quite unrelated to the "allow re-adding an
existing datastore" part and should be its own patch, which could
be applied up-front.
Oh, and does the backend disallow this already, or is this intended
as "unsafe" frontend only check for pure UX reason (can be fine, but
I would at least note that explicitly in the commit message).


> +			},
> +		    },
> +		    {
> +			xtype: 'checkbox',
> +			name: 'reuse-datastore',
> +			fieldLabel: gettext('Reuse existing datastore'),

hmm, not sure w.r.t. always showing a checkbox for some relatively niche
use case by default.
Maybe this is better split-off into either an advanced section or by
opening the dialogue through some new button (e.g. by adding a top bar
in the all-datastore summary page and add an "Add Datastore" split-
button there with the "Re-Add Existing Datastore" as menu button there
(like the shutdown + reboot/stop for guests in PVE).



>  		    },
>  		],
>  		column2: [