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[Cecilia Vela Gurovic <1826788@xxxxxxxxxxxxxxxxxx>]

** Changed in: mahara
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1826788

Title:
  Tags under institutions cause error

Status in Mahara:
  Fix Released

Bug description:
  We now have a system where we can use special 'Institution tags' but
  we also allow institution admins to tag things in the normal was as
  well. The following case causes the error:

  [WAR] 9e (lib/form/elements/tags.php:100) Trying to get property of non-object
  Call stack (most recent first):

      log_message("Trying to get property of non-object", 8, true, true, "/home/robertl/code/mahara-testing/mahara/htdocs/li...", 100) at /home/robertl/code/mahara-testing/mahara/htdocs/lib/errors.php:520
      error(8, "Trying to get property of non-object", "/home/robertl/code/mahara-testing/mahara/htdocs/li...", 100, array(size 3)) at /home/robertl/code/mahara-testing/mahara/htdocs/lib/form/elements/tags.php:100
      display_tag("fats", array(size 2)) at /home/robertl/code/mahara-testing/mahara/htdocs/artefact/file/lib.php:729
      ArtefactTypeFileBase::get_my_files_data(0null, null, "insttwo", null) at /home/robertl/code/mahara-testing/mahara/htdocs/lib/form/elements/filebrowser.php:164

  
  Steps to reproduce:

  1) Have a site with an institution (Institution A) that contains 2 institution admins
  2) Institution admin A logs in and uploads a file to the Admin -> Institution -> Files section
  3) They then edit the file metadata and add a tag 'Cats'
  4) They log out
  5) Institution admin B logs in and goes to the Admin -> Institution -> Files section

  They see the error

  6) They then edit the file metadata and instead of seeing 'Cats' they
  see 'null'

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