Load a view's data lazily

The project page does not send every view's data on every visit. The table and board read issues (one page), Activity reads activityLogs, and the calendar's data is optional: calendarIssues and upcomingDeadlines are only sent when the Calendar view asks for them, and only for the days on screen. This guide shows the pattern, so a new view that needs its own dataset can follow it.

1. Make the props optional on the controller

In ProjectController::show() (app/Http/Controllers/ProjectController.php) heavy props are closures (evaluated only when the response includes them) and view-only props are Inertia::optional() (never part of a normal visit at all):

return Inertia::render('Projects/Show', [
    'issues' => fn () => $this->issueService->getAllByProjectID($project->id, $sortParams, $perPage, $searchParams, $filters),
    'calendarIssues' => Inertia::optional(fn () => $this->issueService->getCalendarIssues($project->id, $calendarFrom, $calendarTo, $searchParams, $filters)),
    'upcomingDeadlines' => Inertia::optional(fn () => $this->issueService->getUpcomingDeadlines($project->id, $searchParams, $filters)),
]);

2. Scope the query to what is on screen

calendarRange() reads calendar_from / calendar_to (Y-m-d, validated), defaults to the current month grid and caps the span. IssueRepository::getForProjectInRange() returns only the issues that overlap that range and reuses applySearchAndFilters(), so the filter chips still apply. Counts that a view only draws (the dashboard's issueStats) come from one grouped query (IssueRepository::statsForUser()), never from issue rows.

3. Ask for the props from the view

The view reports what it shows and the page reloads only its own props (resources/js/Pages/Projects/Show.tsx):

router.reload({
    only: ['calendarIssues', 'upcomingDeadlines'],
    data: { calendar_from: from, calendar_to: to },
});

CalendarView calls onRangeChange(from, to) on mount and whenever the visible month or week changes. A filter or search change is a normal visit, which drops the optional props, so Show.tsx reloads them again for the range still on screen.

4. Test it

ProjectControllerTest asserts the props are missing on a normal visit and present on reloadOnly([...]); IssueListCacheTest covers the range and deadlines queries.