[MDL-47481] User profile field availability condition causes a coding error - Moodle Tracker

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Testing Instructions:

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0. Ensure availability is enabled.
1. Create a new empty course. Do not enrol any users on the course.
2. Add a new Assignment with default settings, except under Restrict access, add a Profile condition for address = x. Save and display.

EXPECTED: The assignment displays with participants: 0.
BEFORE FIX: Error occurs as described in this issue

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0. Ensure availability is enabled. 1. Create a new empty course. Do not enrol any users on the course. 2. Add a new Assignment with default settings, except under Restrict access, add a Profile condition for address = x. Save and display. EXPECTED: The assignment displays with participants: 0. BEFORE FIX: Error occurs as described in this issue
Workaround:

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At least under simple conditions like this test, the problem will not occur if you have at least one student enrolled in the course.

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At least under simple conditions like this test, the problem will not occur if you have at least one student enrolled in the course.
Affected Branches:
MOODLE_27_STABLE
Fixed Branches:
MOODLE_27_STABLE
Pull from Repository:
https://github.com/sammarshallou/moodle.git
Pull Master Branch:
~~MDL-47481~~-master
Pull Master Diff URL:
https://github.com/sammarshallou/moodle/compare/master...MDL-47481-master

Bug only exists in master.

Ensure 'enableavailability' is turned on for server.
Go to a course and edit settings for any activity.
Expand Restrict Access section
Click the Add button to add a restriction, then click 'User profile' button on the popup.
Select any profile field in the newly created item, and type a value
Save changes.
An error will display

Coding error detected, it must be fixed by a programmer: moodle_database::get_in_or_equal() does not accept empty arrays

More information about this error

Debug info:

Error code: codingerror

Stack trace:

line 693 of /lib/dml/moodle_database.php: coding_exception thrown

line 453 of /availability/condition/profile/classes/condition.php: call to moodle_database->get_in_or_equal()

line 333 of /availability/classes/tree.php: call to availability_profile\condition->filter_user_list()

line 612 of /availability/classes/info.php: call to core_availability\tree->filter_user_list()

line 109 of /availability/classes/info_module.php: call to core_availability\info->filter_user_list()

line 1385 of /mod/assign/locallib.php: call to core_availability\info_module->filter_user_list()

line 1430 of /mod/assign/locallib.php: call to assign->list_participants()

line 4126 of /mod/assign/locallib.php: call to assign->count_participants()

line 549 of /mod/assign/locallib.php: call to assign->view_submission_page()

line 53 of /mod/assign/view.php: call to assign->view()

Discovered while testing

MDL-47380 Availability: Editing interface broken in IE8

has a non-specific relationship to

MDL-26542 get_in_or_equal should support empty array