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I have a field in one of my content types called lab_test_id. When Editors add content of that type they enter all the ids of the lab tests associated with that node. I need to be able to take that id, call that lab test database, and display the lab test fields I get back.

Can I accomplish that by changing the display of the lab_test_id field via hook_field_display_alter or should I find another way to accomplish that?

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  • "call that lab test database, and display the lab test fields I get back." - are "lab tests" drupal content, or is that completely separate custom database outside drupal?
    – tdd
    Aug 6, 2015 at 5:48
  • It is a completely separate custom database
    – Eluchel
    Aug 6, 2015 at 5:56
  • Drupal works easier if the content is located within its own database. If you would have 'lab tests' as a content type, it would as easy as to work with Entity reference and Display Suite :-) You 'could' duplicate the data to Drupal first with Feeds or something if that is an approach you would like.
    – Kevin
    Aug 6, 2015 at 8:36

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I think you can do this using hook_field_display_alter, however, I would personally prefer to create a custom formatter for the used field type. With the main advantage that you can save settings for the field formatter.

See the answers of How do I write an additional field formatter for an existing field for basic steps on how to create your own field formatter.

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  • Going to your link I found a nice little module called Custom Formatters which might do the trick too. It does the same thing just is set up so that you don't have to set up a custom module.
    – Eluchel
    Aug 6, 2015 at 16:53
  • Interesting module, didn't know about that one yet :)
    – Watergate
    Aug 6, 2015 at 17:27

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