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Create a wiki with the settings 'seperate groups' and 'seperate wiki for each group'. Open the wiki, you will get the message that the page has not been created yet. Reload the page and you will receive a db write error. table: ouwikis_subwikis I think the problem is related to two uniqueness restrictions: 1. There must be only one entry for a group and wiki 2. There must be only one entry for a wiki and user (a seperate wiki for every user) In case of group wikis the user field is NULL. When opening the wiki first, an table entry is generated. When opening it the second time, Moodle tries to generate a second entry. But there already is the same combination of wiki and user (NULL) - The user-id is written to every entry in the mentioned table to avoid collisions of wikiid<->NULL - When getting the subwiki, moodle shall not look for user=NULL This may lead to problems in case of seperate wikis for every user
There are two constraints on the table ouwiki_subwikis 1. combination of wikiid and groupid must be unique 2. combination of wikiid and userid must be unique Example: Two subwikis for different groups resulted in wikiid: 1 groupid: 1 userid: NULL wikiid: 1 groupid: 2 userid: NULL On MSSQL this is prohibited by constraint 2 and the creation of the second subwiki resulted in an exception. To fix this the magic number is used as userid or groupid in case they are NULL.
# Conflicts: # entirewiki.php # lang/en/ouwiki.php # locallib.php # styles.css
# Conflicts: # lang/en/ouwiki.php
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These changes add a numbered table of contents to every wiki page