HowTo make Wiki history working with Postgres 90 » History » Revision 4
Revision 3 (Florian Breitwieser, 2011-02-21 17:31) → Revision 4/30 (Florian Breitwieser, 2011-02-21 17:31)
h1. HowTo make Wiki history working with Postgres 9.0 h2. Problem When accessing the history version of a Wiki page (e.g. Wiki?version=16), just a string which is not human readable is displayed. It starts like this and is about 5000 characters long: <pre> \x68312e204d532050726f63657373696e6720506970656 ... \x68312e204d532050726f63657373696e6720506970656c696e670d0a0d0a68322e2047656e6572616c2073657475700d0a0d0a57696e646f7773206d616368696e657320617474616368656420746f206d61737370656320617265207573656420746f20636f70792066696c657320746f206365727461696e206c6f636174696f6e732e20402f72 </pre> Same result for exporting TXT or HTML of the current version, and a Wiki-diff just diffs between two such strings. h2. Solution PostgreSQL 9 introduced a new 'hex' format for bytea data input and output. Default for output is now hex, but it can be easily reverted to the old 'escape' format with the following command: <pre> ALTER DATABASE redmine SET bytea_output TO 'escape'; </pre> See also #7677.