Multiple data sources for one datagrid?

Question

Hello Everyone,
I have a page that has a datagrid called dgMainGrid. I have
it bound to an HTTPService and it updates fine. But I need to
dynamically bind it to another HTTPService when the user clicks a
button. How can I do that?
Thanks,
Anthony

Answer 1

Come to think of it, is this even possible? How does a datagrid use its dataField parameter to lookup data? I am guessing data_array[row_index][col.dataField] would determine the value of a single cell at row_index and col. If so, my naive approach would require me to override the bracket operator so that the appropriate value is returned..
e.g. when a simple array of objects is used, you have [{name:John, lastname:Smith}], datagridcolumns dataField is then set to "name". Now I will have two separate arrays:
arr1: [{name:John, lastname:Smith}]
arr2: [{name:Smith, lastname:John}]
mergedarray will have a reference to both of them. Then when getKey("name", 1) is called, it will return a special key which can be used to access the name property from array 1, something like "name1". If I cannot override the bracket operator, mergedarray[0][name1] will return nothing.
I remember reading somewhere that this kind of override is not possible. Any ideas?