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MDL-67428 navigation: Apply navigation text filters at system context

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On some larger sites, processing the navigation with format_string will
habitually load all the contexts for navigation which can take 400+ DB
queries. Explicitly tying all those format_string calls to the system
context reduces this overhead to a single DB query that probably has
already been run on the page previously.

Co-authored-by: Peter Burnett <[email protected]>
This commit is contained in:
Peter Spicer
2022-03-04 14:36:25 +10:00
committed by Peter Burnett
co-authored by Peter Burnett
parent 1d99ba19a2
commit edde68e078
5 changed files with 64 additions and 13 deletions
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lib/tests/accesslib_test.php
+23
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@@ -4848,6 +4848,29 @@ class accesslib_test extends advanced_testcase {
$this->expectException(\required_capability_exception::class);
require_all_capabilities($sca, $coursecontext);
}
/**
* Test get_navigation_filter_context.
*
* @covers ::get_navigation_filter_context
*/
public function test_get_navigation_filter_context() {
$this->resetAfterTest();
$course = $this->getDataGenerator()->create_course();
set_config('filternavigationwithsystemcontext', 0);
// First test passed values are returned if disabled.
$this->assertNull(context_helper::get_navigation_filter_context(null));
$coursecontext = context_course::instance($course->id);
$filtercontext = context_helper::get_navigation_filter_context($coursecontext);
$this->assertEquals($coursecontext->id, $filtercontext->id);
// Now test that any input returns system context if enabled.
set_config('filternavigationwithsystemcontext', 1);
$filtercontext = context_helper::get_navigation_filter_context(null);
$this->assertInstanceOf('\context_system', $filtercontext);
$filtercontext = context_helper::get_navigation_filter_context($coursecontext);
$this->assertInstanceOf('\context_system', $filtercontext);
}
}
/**