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fix(instances): a refused XML definition comes back in its editor

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On the machine step, "Or define it from XML" lost the definition when it
was refused: a taken name re-rendered the page with an empty, collapsed
editor; malformed XML went on to libvirt, and libvirt's refusal sent the
browser back to an empty page with the reason at the top.

All three refusals now render the page with the section open, the
submitted XML in the editor (and in the field it posts, so it can be sent
again unchanged), and the reason above the editor, which takes the focus.

Fixes #174

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
This commit is contained in:
catborise 2026-10-24 11:19:02 +03:00
parent 575077c8ac
commit 9c6e07a467
3 changed files with 48 additions and 13 deletions
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20
instances/views.py
View file

@ -1975,22 +1975,24 @@ def create_instance_select_type(request, compute_id):
default_machine = app_settings.INSTANCE_MACHINE_DEFAULT_TYPE
default_arch = app_settings.INSTANCE_ARCH_DEFAULT_TYPE
if request.method == "POST":
if "create_xml" in request.POST:
xml = request.POST.get("dom_xml", "")
try:
name = util.get_xml_path(xml, "/domain/name")
except util.etree.Error:
name = None
# a refused definition comes back in the editor, its reason beside it
xml_error = None
if request.method == "POST" and "create_xml" in request.POST:
xml = request.POST.get("dom_xml", "")
try:
name = util.get_xml_path(xml, "/domain/name")
if name in instances:
error_msg = _("A virtual machine with this name already exists")
messages.error(request, error_msg)
xml_error = _("A virtual machine with this name already exists")
else:
with libvirt_compute_lock(compute):
conn._defineXML(xml)
utils.refr(compute)
instance = compute.instance_set.get(name=name)
return redirect(reverse("instances:instance", args=[instance.id]))
except util.etree.Error as err:
xml_error = _("The XML is not well-formed: %(error)s") % {"error": err}
except libvirtError as err:
xml_error = _("libvirt Error - %(exception)s") % {"exception": error_text(request, err)}
return render(request, "create_instance_w1.html", locals())