Previous empty submission checks required the submission to
be saved to the database. This patch adds a new method to
submission plugins that lets them report whether the submission
is empty before it is saved.
There was a problem with core\update\code_manager::unzip_plugin_file()
if it was used to extract a plugin package into a non-empty target
directory and the plugin package root folder was being renamed at the
same time.
The problem was caused by the underlying helper method
rename_extracted_rootdir() that worked only for ZIPs extracted to an
empty temporary location. When the plugin was extracted to the actual
dirroot with other existing plugin folders present, the method failed
badly.
The solution in the patch is to always extract the ZIP into a temporary
empty location, perform the eventual root renaming there, and only then
move the extracted contents to the final destination. Additionally we
are changing the behaviour of the rename_extracted_rootdir() method so
that now it throws exception if the plugin package contains multiple
root folders (it should not happen in normal situations as such a plugin
would not pass the pre-install validation).
Unit tests did not catch this bug before because in the tests, the
target directory had been empty. Now we are adding a new directory
"aaa_another" to the target location to test in more realistic
environment. Tests for the new behaviour of the renaming method are
added, too.
p.s. I noticed that moodle_exception class was not imported into the
namespace and this is fixed now too (and covered with unit tests).
* Use clean_param() for name and description when displaying the tool type.
Basically in the following functions:
- serialise_tool_type()
- lti_get_configured_types()
* Changed name and description's type from PARAM_TEXT to PARAM_RAW
in tool update parameters.
* Changed name and description's type from PARAM_TEXT to PARAM_RAW
in mod_lti_external::tool_type_return_structure()
PostgreSQL 9.1 allows hex formating for binary which is handled better
by pg_query_params().
Getting bytea isn't required on connection, it can be used as pg_field_type()
when binary needs to be checked.
