Check for duplicates in array

quick007last year

2

• 

  jesschow

  last year

  Hi @Lukas, you can use the

  validate

  function on the field to pass your own custom validation logic:

  
  
  

  Something like this:

  
  

  validate: (val) => {
    // return values from unique field
    const values = val?.map((row) => row.fieldToCheck)
    // check if there are any duplicate values
    const hasDuplicates = new Set(values).size !== values?.length
  
    if (hasDuplicates) return 'Duplicate values in array'
    if (!hasDuplicates) return true
  },

  
  
  

  Sorry you didn't get a reponse here sooner! Let us know if you need anything else.

• 

  quick00712 months ago

  Thanks so much! Better late than never