[FEATURE] New DataProcessor: ExtractPropertyProcessor

[kitzberger]

This could be used to reduce the ogImage property from an array to a simple string.

lib.meta.fields.ogImage = TEXT
lib.meta.fields.ogImage {
   dataProcessing {
      # Use the column 'og_image' to render an array with all relevant
      # information (such as the publicUrl)
      10 = FriendsOfTYPO3\Headless\DataProcessing\FilesProcessor
      10.as = media
      10.references.fieldName = og_image
      10.processingConfiguration.returnFlattenObject = 1

      # Extract only property 'publicUrl' from the above created array
      20 = FriendsOfTYPO3\Headless\DataProcessing\ExtractPropertyProcessor
      20.key = media.publicUrl
      20.as = media
   }
}

[coveralls]

Pull Request Test Coverage Report for Build 4042415372

• 0 of 14 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.7%) to 59.719%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
Classes/DataProcessing/ExtractPropertyProcessor.php	0	14	0.0%
<!--	Total:	0	14

Totals
Change from base Build 4014243043:	-0.7%
Covered Lines:	679
Relevant Lines:	1137

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💛 - Coveralls

[schloram]

I think this could come in handy. 👍

[kitzberger]

Yeah, thanks for merging :muscle: