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Field - callback (knowledge graph)

This feature is no longer available but remains supported for customers with an existing knowledge graph implementation.

Description

Callback function applied to fields before rendering them.

The function requires four arguments:

  • type - type of entity, ie. person, document

  • fieldType - type of template field field; available field types:

    • title

    • subtitle

    • desc

    • detailPrimary

    • detailSecondary

    • listPrimary

    • listSecondary

  • fieldKey - metadata class name used to provide the field value for field types detail* and list*, for other types it is null

  • fieldValue - array of values

The function requires to return array of value/values.

Default value

field: {
  callback: null
}

Examples

Return only first value

field: {
  callback: function(type, fieldType, fieldKey, fieldValue) {
    return [fieldValue[0]];
  }
}

Return only first value for field types title, subtitle or desc

field: {
  callback: function(type, fieldType, fieldKey, fieldValue) {
  	const fieldTypes = ['title', 'subtitle', 'desc'];
    return fieldTypes.indexOf(fieldType) ? [fieldValue[0]] : fieldValue;
  }
}

Return correct case for metadata class State meaning instead of indexed value of act display in widget ACT

field: {
  callback: function(type, fieldType, fieldKey, fieldValue) {
    if (fieldKey === 'State') {
      for (var i = 0, len = fieldValue.length; i < len; i++) {
        fieldValue[i] = fieldValue[i].toUpperCase();
      }
    }
    return fieldValue;
  }
}

See also