Question

Right now, users click a button with JQuery. It dynamically adds a new form everytime. I need a way in JQuery or C# that can update the index so that is has the following format. The html is being created in a user control in ASP.NET MVC. I have tried using a string for the indexes but it does not Model Bind it correctly. I have read the following blog post link text

// Jquery that handles user click event of the button
// Jquery that handles user click event of the button
// Jquery that handles user click event of the button

    $(".addDetail").click(function() {
    if ($("#rateFormContainer").css("display")!= "none") {
        $.ajax({
            url: "/Rates/NewRateDetail/",
            cache: false,
            success: function(html) {

                $("#rdContainer").append(html);
            }
        });
        $("#rateDetailMsg").empty()                
        }
    });

// The end result of the view, what I want to do
// The end result of the view, what I want to do
// The end result of the view, what I want to do
// Update the Index to 0 for this element
<input type="hidden" value="0" name="RateDetail.Index" id="RateDetail_Index">
<input type="text" value="" name="RateDetail[0].EffectiveDate" id="RateDetail[0]_EffectiveDate">

// Update the Index to 1 for this element
<input type="hidden" value="1" name="RateDetail.Index" id="RateDetail_Index">
<input type="text" value="" name="RateDetail[1].EffectiveDate" id="RateDetail[1]_EffectiveDate">

// Update the Index to 2 for this element
<input type="hidden" value="2" name="RateDetail.Index" id="RateDetail_Index">
<input type="text" value="" name="RateDetail[2].EffectiveDate" id="RateDetail[2]_EffectiveDate">

// Use JQuery to update all items to correct indexes on sumbmit
<input type="submit" class="prettyButton" value="Submit">


// ASP.NET MVC user control code
// ASP.NET MVC user control code
// ASP.NET MVC user control code
// ASP.NET MVC user control code

<%=Html.Hidden(Resources.RSINET.RateDetailIndex, "0")%>

<table class="prettyForm">
<thead>
    <th colspan="2">Add Rate Details</th>
</thead>
<tr>
    <td>Effective Date</td>
    <td><%=Html.TextBox(Resources.RSINET.RateDetailBrace + "0" + Resources.RSINET.BraceEffectiveDate)%>  <a href="javascript:NewCal('RateDetail[<%="0"%>].EffectiveDate','mmddyyyy')"><img src="../../Content/Images/cal.gif" width="16" height="16" border="0" alt="Pick a date"/></a></td>
</tr>
<tr>
    <td>Expiration Date</td>
    <td><%=Html.TextBox(Resources.RSINET.RateDetailBrace + "0" + Resources.RSINET.BraceExpirationDate)%> <a href="javascript:NewCal('RateDetail[<%="0"%>].ExpirationDate','mmddyyyy')"><img src="../../Content/Images/cal.gif" width="16" height="16" border="0" alt="Pick a date"/></a></td>
</tr>
<tr>
    <td>Condition Type</td>
    <td><%=Html.DropDownList(Resources.RSINET.RateDetailBrace + "0" + Resources.RSINET.BraceConditionType, ViewData.Model.CondT, "Choose Option")%></td>
</tr>
<tr>
    <td>Condition Value</td><td><%=Html.TextBox(Resources.RSINET.RateDetailBrace + "0" + Resources.RSINET.BraceConditionValue)%></td>
</tr>
<tr>
    <td>Rate</td><td><%=Html.TextBox(Resources.RSINET.RateDetailBrace + "0" + Resources.RSINET.BraceRate)%> </td>
</tr>
<tr>
    <td>Unit</td><td><%=Html.DropDownList(Resources.RSINET.RateDetailBrace + "0" + Resources.RSINET.BraceUnit, ViewData.Model.Unit, "Choose Option")%></td>
</tr>
<tr>
    <td>Status</td>
    <td><%=Html.DropDownList(Resources.RSINET.RateDetailBrace + "0" + Resources.RSINET.BraceActiveItem, ViewData.Model.Active, "Choose Option")%></td>
</tr>


</table>

Answer 1

EDIT: Here’s the javascript code I think you need. This assumes that “/Rages/NewRateDetail” returns another copy of <table class="prettyForm">. See a complete standalone example (in plain HTML) below.

$(".addDetail").click(function() {
if ($("#rateFormContainer").css("display")!= "none") {
    $.ajax({
        url: "/Rates/NewRateDetail/",
        cache: false,
        success: function(html) {

            $("#rdContainer").append(html);

                $("#rdContainer table.prettyForm").each(function(i, el) {

                    $("input,select,textarea", el).each(function(j,formEl) {
                        $(formEl)
                            .attr("name", $(formEl).attr("name").replace(/\[\d\]/, "["+ i +"]"))
                            .attr("id", $(formEl).attr("id").replace(/\[\d\]/, "["+ i +"]"));
                    });
                });

        }
    });
    $("#rateDetailMsg").empty()                
    }
});

Here’s code which copies the entire ‘prettyForm’ table each time you click the ‘add’ button. Then it loops through each table and updates the field id and name attributes corresponding to to the current index of the loop.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js"></script>
    <script type="text/javascript">
        $(function() {
            $("#add").click(function(e) {
                e.preventDefault();             

                $("table.prettyForm:first").clone().insertBefore(this);

                $("table.prettyForm").each(function(i, el) {

                    $("input,select,textarea", el).each(function(j,formEl) {
                        $(formEl)
                            .attr("name", $(formEl).attr("name").replace(/\[\d\]/, "["+ i +"]"))
                            .attr("id", $(formEl).attr("id").replace(/\[\d\]/, "["+ i +"]"));
                    });
                });

                return false;
            })
        });
    </script>
</head>

<body>
    <table class="prettyForm">
        <thead>
            <th colspan="2">
            Add Rate Details
            <input type="hidden" value="0" name="RateDetail.Index" id="RateDetail_Index">
            </th>
        </thead>
        <tr>
            <td>Effective Date</td>
            <td><input type="text" value="" name="RateDetail[0].EffectiveDate" id="RateDetail[0]_EffectiveDate"></td>
        </tr>
        <tr>
            <td>Expiration Date</td>
            <td><input type="text" value="" name="RateDetail[0].ExpirationDate" id="RateDetail[0]_ExpirationDate"></td>
        </tr>
        <tr>
            <td>Status</td>
            <td><select name="RateDetail[0].Status" id="RateDetail[0].Status"></select></td>
        </tr>
    </table>
    <button id="add">Add Form</button>
</body>
</html>