Validator cell

Getting help Questions
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1

Hello dear

how to validate single cell value in react (i read handsontable validate documentation but its not working)

i tried this and need to validate in add row

validate%20code
validate%20code322×281 7.45 KB

i think validate is not working its taking wrong value not showing error border , background or something…

eeror
eeror336×215 4.67 KB

pls help me

Thank you

2

Hi @munkhtulgaworks

There’s a method called validateCell() at https://handsontable.com/docs/javascript-data-grid/api/core/#validatecell and it will validate only that single cell. The thing you do in that snippet is adding a validator for (as I suppose, cause the image is cut) the whole column.

Now the validation does not run after table initialization, even if you set up a custom validator as you did in the code above. That is why you can either

  • validate cells automatically (and that happens when user edits any data in the table, then the whole table rerenders and validates values
  • validate cell/cells programmatically as with the validateCell() method.