Require child list to have at least one record

[ParAvion]

Hello,

How do I require a child list or library to have at least one record before the parent form can be saved? I tried using the code below but it doesn't work:

fd.spRendered(function() {

fd.control('SPDataTable1').addValidator({
error: 'Error message',
validate: function(value) {
if (value.length == 0) {
this.error = "Add at least one record to the table";
return false;
}

    return true;
}

});

});

[mnikitina]

Hello @ParAvion,

Please use the code from this post to add validation to List or Library control:

How to block the form from saving

Hello @annesha_adhikari, The following code checks the entries in the 'List or Library' and not allows a user to save the record if the control has no items. Please use it in the 'JavaScript' Editor. [image] fd.spRendered(function() { fd.validators; fd.validators.push({ name: 'SPDataTable validator', error: 'Error message', validate: function() { if (fd.control("SPDataTable0").widget.dataItems().length == 0) { this.error = "Add at least one record to t…