Until now in the get_assignments WS all the settings for assignment
plugins (submission and feedback) are returned, this was bad because:
- It was returning settings for plugins that may not be enabled
- It was returning settings that would be a security risk (a third
party plugin including a password or credentials for connecting a
remote site)
- Some values was returned "raw" without further processing, for
example, maxsubmissionsizebytes returned 0 when using the plugin
default value instead a valid size
- Assignment plugins implemented an API for communication with the
external API, see for example: get_external_parameters, it didn’t make
sense had an API for the received parameters and not the returned data.
Added a method to the feedback plugins to check if feedback
has been modified. This allows for a more accurate record
of when the grade has been modified.
This patch adds lots of webservices to the assignment module.
* mod_assign_revert_submissions_to_draft
* mod_assign_lock_submissions
* mod_assign_unlock_submissions
* mod_assign_save_submission
* mod_assign_submit_for_grading
* mod_assign_save_grade
* mod_assign_save_user_extensions
* mod_assign_reveal_identities
* mod_assign_copy_previous_attempt
All features such as reopening attempts and marking workflow are supported through
the save_grade and save_submission functions.
Uploading files is supported by sending draft item ids for the files_filemanager param the same functions.
The entry in the assign_grades table contains grades feedback and other settings such as locked.
Only send the student an email about new feedback if it is actually grades or feedback that
has been added. This is done by using another state for the mailed flag (2) which means "unset".
This was preventing the view full submission/feedback link from appearing
everywhere in the assignment when the submission/feedback content had been
truncated in the summary because it was too long (or too many files)
