[#MDL-12418] Item Analysis shows duplicate responses for Multiple Choice questions with LaTeX in answers

Moodle

Item Analysis shows duplicate responses for Multiple Choice questions with LaTeX in answers

Created: 04/Dec/07 03:17 AM Updated: Thursday 06:51 PM

Component/s:

Quiz, Questions

Affects Version/s:

1.8, 1.8.1, 1.8.2, 1.8.3

Fix Version/s:

2.0

File Attachments:

moodle_item_analysis_latex.patch (1 kb)

Image Attachments:

1. pre-patch1.png
(48 kb)

Issue Links:

Dependency

This issue will be resolved by:

~~MDL-14205~~ Content for Individual Item Analysis report - different for each question type

Duplicate

This issue is duplicated by:

~~MDL-11981~~ Problems with quiz item analysis and tex-filter

Database:	Any
Participants:	Chris Edwards, Jamie Pratt, Oliver Rahs and Tim Hunt
Security Level:	None

Description

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When viewing an Item Analysis report of a quiz with multiple choice questions that have LaTeX formatting in the answers, extra duplicate answers appear in the report table. This seems to be because the answer comparison in the Item Analysis report expects plain text answers from get_actual_response in each questiontype class file. The get_actual_response function in the question_multichoice_qtype class returns a formatted response. This change was introduced in ~~MDL-8349~~ to filter the LaTeX in answers shown in the summary. This patch will format the questions as before, but the formatting was moved to response_summary where it is needed and not in get_actual_response where a plain text response is needed. The filter still shows LaTeX in this summary as escaped html which is how they were showing up before this patch.

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Chris Edwards - 04/Dec/07 03:57 AM

I tried searching on this before posting it, but it seems that this issue is related to ~~MDL-11981~~. The formatting problem in the summary asked about in that report is not fixed by the above patch, however.

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Chris Edwards - 04/Dec/07 04:14 AM

This should fix the problems in the Item Analysis Report in ~~MDL-11981~~

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Chris Edwards - 04/Dec/07 04:15 AM

Sorry for the problem links. This should resolve the display issue in the Item Analysis report for TeX formatting.

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Oliver Rahs - 12/Dec/07 09:58 PM

Hi
Thanks a lot for your patch. I've installed and tested it on our moodle-installation and it works fine. (The issue ~~MDL-11981~~, that I've created is resolved with your patch too).
Oliver

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Tim Hunt - 04/Apr/08 11:33 PM

Assigning quiz report issues mentioned in http://docs.moodle.org/en/Development:Quiz_report_enhancements to Jamie.

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Jamie Pratt - 27/Nov/08 06:22 PM

This problem was caused by the formatting of questions in get_actual_responses. Now formatting is done in response_summary rather than get_actual_response which returns an array of unformatted strings.

Have fixed the formatting in responses report and in statistics report to use the correct formatting for the question type.

Created new functions format_responses and format_response. format_responses works on an array and normally just walks through the array calling format_response.