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Is there a module which creates a field where you can choose the field type of the key and also the value during content type creation?

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You can use the Field Collection module to achieve that functionality:

Provides a field-collection field, to which any number of fields can be attached.

A field collection is internally represented as an entity, which is embedded in the host entity. Thus, if desired field collections may be viewed and edited separately too.

The idea is:

  1. Create a Field Collection.
  2. Add key/value fields to it with the field types of your choice.
  3. Add a Field Collection field to the content type you want these key/value fields on.
  4. Set the source of that Field Collection field to the new Field Collection you've just created.
  5. Repeat for whatever other content types you need to.
  • Thanks, I've always tried to avoid the field collection because it creates an actual entity from the fields. It's a shame you can't group fields without doing this. – user3791372 Nov 14 '14 at 12:31
  • Yeah Field Collection is a weird one (I try to avoid it to wherever possible), but short of writing your own field type I think it's the simplest way to get what you're looking for – Clive Nov 15 '14 at 17:13
  • As an update to this - if you're looking to create nodes programmatically, I'd certainly recommend you avoid this module - use entity reference and views and a separate content type. (EVA allows you to embed views as a field) I just found out the hard way that field collection isn't the best solution to this problem! – user3791372 Nov 16 '14 at 22:36
  • And furthermore, if you want 0 instances of your field collection (that is, allow optional instances of your field collection to be specified), it seems you can't – user3791372 Nov 17 '14 at 17:50

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