[MDL-27824] Add/ Editing Categories / Courses / Sub courses and it crashes with a coding error detected. "paging_bar requires a perpage value" - Moodle Tracker

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Database:

Any
Testing Instructions:
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access your DB and select the config table, rename 'coursesperpage' to 'coursesperpagexyz'

as admin, access site admin > courses > add/edit courses

select one of the categories

make sure there's no error occurs

access config table again and rename 'coursesperpagexyz' to 'coursesperpage'
Show
access your DB and select the config table, rename 'coursesperpage' to 'coursesperpagexyz' as admin, access site admin > courses > add/edit courses select one of the categories make sure there's no error occurs access config table again and rename 'coursesperpagexyz' to 'coursesperpage'
Workaround:

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Merely to go back up a level and then return down the path but its not really achieving the objective.

Show
Merely to go back up a level and then return down the path but its not really achieving the objective.
Affected Branches:
MOODLE_20_STABLE, MOODLE_22_STABLE, MOODLE_23_STABLE, MOODLE_24_STABLE
Fixed Branches:
MOODLE_22_STABLE, MOODLE_23_STABLE
Pull from Repository:
git://github.com/rwijaya/moodle.git
Pull Master Branch:
~~MDL-27824~~
Pull Master Diff URL:
https://github.com/rwijaya/moodle/compare/master...MDL-27824

Coding error detected, it must be fixed by a programmer: paging_bar requires a perpage value.

Stack trace:

line 1936 of \lib\outputcomponents.php: coding_exception thrown

line 2212 of \lib\outputrenderers.php: call to paging_bar->prepare()

line 70 of \lib\outputrenderers.php: call to core_renderer->render_paging_bar()

line 2201 of \lib\outputrenderers.php: call to renderer_base->render()

line 261 of \course\category.php: call to core_renderer->paging_bar()

Stack trace:

line 1936 of \lib\outputcomponents.php: coding_exception thrown

line 2212 of \lib\outputrenderers.php: call to paging_bar->prepare()

line 70 of \lib\outputrenderers.php: call to core_renderer->render_paging_bar()

line 2201 of \lib\outputrenderers.php: call to renderer_base->render()

line 261 of \course\category.php: call to core_renderer->paging_bar()

Home / ⟩ Courses / ⟩ A / ⟩ Course 1

You should really redirect before you start page output

line 562 of \lib\outputrenderers.php: call to debugging()

line 2495 of \lib\weblib.php: call to core_renderer->redirect_message()

line 699 of \mod\scorm\locallib.php: call to redirect()

line 14 of \course\format\scorm\format.php: call to scorm_course_format_display()

line 240 of \course\view.php: call to require()

duplicates

MDL-26042 Coding error paging bar requires a per page value

is duplicated by

MDL-32672 Can't delete course; persistent error message.

MDL-33790 paging_bar requires a perpage value (when viewing list of courses)

will be (partly) resolved by

MDL-35138 Ensure default values for config settings are set