Dynamic parameters for data for jQuery ajax function

Question

I have a standard jquery ajax function like so

    $.ajax({
    type: "POST",
    url: "/myApp/InsertRecord.action", 
    data: {
        table:table,
        issueNumber:issue_number,
        resultPointer:result_pointer
    }, 
    success: function(data) {
        $("#GRID_DIV").html(data);
    }
    });

If I were to have a dynamic number of additional parameters with dynamic names, would it still be possible to use the jquery ajax function?

To show what I am doing, in a standard .submit() scenario, I would grab the data like so:

    public MyAction extends ActionSupport implements ParameterAware, SessionAware, ServletContextAware {
    private Map<String, String[]> parameters;
    .
    .
    .
    Set<String> keySet = parameters.keySet();

EDIT:

To create an array, I can do this to get all the relevant names in my form:

var allNames=new Array();
var numberOfRecords = 0;
$('input:text[name^=rec_]').each(function() {
   allNames[numberOfRecords++] = $(this).attr('name');
});

because I know that all the dynamic names will at least start with rec_ but then the problem with this is I do not have specific getters/setters for each field because I don't know what their full names will be.

Dave Newton · Accepted Answer · 2011-12-09 15:12:06Z

1

The number/type of parameters isn't relevant; all you need is ParameterAware.

There's no need to put the fields in an array.

answered Dec 9, 2011 at 15:12

Dave Newton

161k27 gold badges263 silver badges310 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

demongolem Over a year ago

When I do a submit, my parameter set has all the entries I would expect with the above code and everything is working fine. However, the parameter set is not populated on the ajax call. I would need some sort of approach like the array generation method but then have the Struts be able to handle the dynamically named parameters.

Dave Newton Over a year ago

@demongolem ParameterAware puts a reference to the underlying request's parameter map into your local map; the type of request isn't relevant. If they're being sent, and nothing in your application stack is doing anything to them, they'll be in the map. Check the wire, check your interceptor stack. The names of the parameters are irrelevant.

demongolem · Accepted Answer · 2011-12-09 17:53:07Z

The piece I was really missing was the .serialize() jQuery function.

My javascript now looks like this:

var formForm = $('#issueRecordInputForm').serialize();

var table = '<s:property value="table" />';
var issue_number = '<s:property value="issueNumber" />';
var result_pointer = '<s:property value="resultPointer" />';

$("#table").val(table);
$("#issueNumber").val(issue_number);
$("#resultPointer").val(result_pointer);

$.ajax({

    type: "POST",
    url: "/myApp/InsertRecord.action", 
    data: formForm,
    success: function(data) {
        $("#GRID_DIV").html(data);
    }
});

As you can see, I also removed three previous parameters I had and instead set hidden ids with the appropriate values in the form instead. I could not really mix the three parameters I had with the serialize call in the data: portion of the ajax call. Having done this serialization, the ParameterAware portion of struts will handle this information correctly as @Dave Newton has stated.

MrJaeger · Accepted Answer · 2011-12-09 15:00:48Z

0

I'm not 100% sure about this, but I'm pretty sure you could just aggregate all of the data you want to send to the server into a single array and then send that. So instead of

data: {
    field1: data1
    field2: data2
    ...
}

Just put all fields into an array and then just send the array

answered Dec 9, 2011 at 15:00

MrJaeger

1,6563 gold badges15 silver badges14 bronze badges

2 Comments

Cory Danielson Over a year ago

Yep, it will serialize the array for you

demongolem Over a year ago

In my case, to pass the array I needed to do like JSON.stringify(allNames, null, 2) because OGNL was choking on something or another. Then everything gets through fine.

Collectives™ on Stack Overflow

Dynamic parameters for data for jQuery ajax function

3 Answers 3

2 Comments

Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related