Is it possible to get back 2D arrays from a form?
I want to be able to have a table with some number of rows. Each row has a 'grouping' field which the user can enter a number in. Each row will also have a dynamic 'foo' column which will have a button to add additional 'foo' values. Some javascript will drop in new 'foo' textfields on a given row whenever that row's button is clicked. I want to be able to collect an int[] grouping array, which is straight forward. Iterating over a collection to create textfields will let me get an int[] in my action which will be the list of groupings indexed by row (so grouping[0] yields the entered value for the first row, grouping[3] yields the entered value for the fourth row, etc.) I also want to be able to collect an int[][] foo array. This should be an int[] array of foo values indexed by row. This is less straightforward and I'm not sure how to approach this. Are there any sorts of similar examples to this floating around?
