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[Robert Lyon <robertl@xxxxxxxxxxxxxxx>]

Public bug reported:

This error:

Artefact with id 6 not found
Call stack (most recent first):
    artefact_instance_from_id("6") at /home/robertl/htdocs/mahara-devel/mahara/htdocs/lib/embeddedimage.php:79
    EmbeddedImage::prepare_embedded_images(" <p>This is  a test</p> <p><img width="155" heig...", "blogpost", "7", null, "1") at /home/robertl/htdocs/mahara-devel/mahara/htdocs/artefact/blog/db/upgrade.php:76

Occurs when a Journal post (blogpost) has an embedded image <img> tag in
it but the underlying image itself has been deleted.

We need to adjust EmbeddedImage::prepare_embedded_images() to check that
the underlying image artefact still exists

** Affects: mahara
     Importance: High
     Assignee: Robert Lyon (robertl-9)
         Status: In Progress

** Affects: mahara/15.04
     Importance: High
         Status: New

** Affects: mahara/15.10
     Importance: High
         Status: New

** Affects: mahara/16.04
     Importance: High
         Status: New

** Affects: mahara/16.10
     Importance: High
     Assignee: Robert Lyon (robertl-9)
         Status: In Progress

** Also affects: mahara/16.10
   Importance: High
     Assignee: Robert Lyon (robertl-9)
       Status: In Progress

** Also affects: mahara/16.04
   Importance: Undecided
       Status: New

** Also affects: mahara/15.04
   Importance: Undecided
       Status: New

** Also affects: mahara/15.10
   Importance: Undecided
       Status: New

** Changed in: mahara/16.04
   Importance: Undecided => High

** Changed in: mahara/15.10
   Importance: Undecided => High

** Changed in: mahara/15.04
   Importance: Undecided => High

** Changed in: mahara/16.04
    Milestone: None => 16.04.4

** Changed in: mahara/15.10
    Milestone: None => 15.04.10

** Changed in: mahara/15.10
    Milestone: 15.04.10 => 15.10.6

** Changed in: mahara/15.04
    Milestone: None => 15.04.10

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https://bugs.launchpad.net/bugs/1612451

Title:
  Artefact blog upgrade gives error for embedded image

Status in Mahara:
  In Progress
Status in Mahara 15.04 series:
  New
Status in Mahara 15.10 series:
  New
Status in Mahara 16.04 series:
  New
Status in Mahara 16.10 series:
  In Progress

Bug description:
  This error:

  Artefact with id 6 not found
  Call stack (most recent first):
      artefact_instance_from_id("6") at /home/robertl/htdocs/mahara-devel/mahara/htdocs/lib/embeddedimage.php:79
      EmbeddedImage::prepare_embedded_images(" <p>This is  a test</p> <p><img width="155" heig...", "blogpost", "7", null, "1") at /home/robertl/htdocs/mahara-devel/mahara/htdocs/artefact/blog/db/upgrade.php:76

  Occurs when a Journal post (blogpost) has an embedded image <img> tag
  in it but the underlying image itself has been deleted.

  We need to adjust EmbeddedImage::prepare_embedded_images() to check
  that the underlying image artefact still exists

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