Validation for array fields

[vestrep]

Hi,
There is a problem with the validation error messages with array fields. When I use quickForm and put an element in an Array, then validation works great. But if I add an element, remove it and add a new element, then validation no validation error message apears when the field is invalid. I guess that there is a problem with the internal counter, since there is no element that has the 0 number. In this case, my first element of the Array has the number one (example: task.1.name instead of task.0,name)

[vestrep]

I found what causes the problem. It's the AutoForm.Utility.compactArrays() function that is called before the values are inserted in the collection. This function removes the array item that have a null value because they were removed. For the moment I solved the problem by removing the line 344 in the autoform-api.js. It's the call to the Utility.compactArrays(). The only problem is that this causes the document to contain the null values. Maybe the array should be cleaned in the collection2 package? I don't what to make a pull request with this change because the function was visibly disigned to avoid that null values. But I found no solution to solve this problem exclusively in the Autoform package.