Himanshu Maurya created AMBARI-26646:
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Summary: Ambari Web React: Fix Host Summary page not listing host
components when opened via the Hosts List page
Key: AMBARI-26646
URL: https://issues.apache.org/jira/browse/AMBARI-26646
Project: Ambari
Issue Type: Story
Reporter: Himanshu Maurya
Assignee: Himanshu Maurya
Fix For: 3.1.0
h2. Summary
Aligns Hosts List filter and host-selection behavior with the classic Ember UI:
filters applied on the Hosts List page were lost whenever the user navigated to
a Host Summary page and back, and selected hosts did not survive a page
refresh. Also fixes an incorrect pagination count shown when a filtered result
set is empty.
h2. Changes
* Introduced a new {{HostsListStateProvider}} (shared React context) holding
{{selectedFilters}} and {{selectedHosts}} above the route tree, so this state
survives the component unmount that happens when navigating from the Hosts List
to a Host Summary page and back — filters no longer reset on that round-trip.
* Host selection is now also mirrored into the browser's local storage under
the same key the classic UI uses
({{{}app.tables.selectedItems.mainHostController{}}}), so the selected hosts
checkbox state survives a hard page refresh, matching Ember behavior.
* The Hosts List page now initializes its filter bar and query string directly
from any already-restored filters on mount, instead of starting empty and
briefly issuing an unfiltered request before catching up.
* Deep links into the Hosts List (e.g. from a service's component count, or a
stack version's host count) still seed filters from the URL on first load, but
no longer keep overwriting user-added filters on every subsequent poll refresh.
* Resetting filters via the search bar now also clears the deep-link URL
parameters (component/version), so a URL-seeded filter doesn't immediately
reapply itself after being cleared.
* Fixed the pagination footer showing "1-0 of 0 items" instead of "0-0 of 0
items" when a filter matches no hosts.
h2. Impact
Matches the classic Ember UI's persistence behavior for the Hosts List page,
removing a UX regression where filters silently reset on navigation and host
selections were lost on refresh.
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