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Display a key from unserialized data field

I really don’t understand how the “User: Data” field works. Couldn’t find any documentation of this.

I want to set the Display format to “A certain key” to output the identifier value from this serialized data (relevant snippet):

a:1:{s:10:"hybridauth";a:26:{s:10:"identifier";s:17:"76561198181833179";

When I enter identifier as key, I only get this notice and no output.

Notice: Undefined index: identifier in views_handler_field_serialized->render() (line 60 of www/htdocs/****/sites/all/modules/views/handlers/views_handler_field_serialized.inc).

What do I have to enter in the “Which key should be displayed” field exactly, to display the identifier value?

This article was republished from its original source.
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Display a key from unserialized data field

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