I have an array of select lists (dropdown boxes) in which i am using knockouts event binding to trigger a change event. I have a function where I am trying to grab the value when a different option is selected from the drop down list, however it is always returning the first value in my observablearray. Here is a walk thru of what I am doing-
Here is the select list in my view:
<table style="width: 100%">
<tbody data-bind="foreach: LoanDetails">
<tr style="border: none">
<td>
<select id="ddlLCLoans" tabindex="4" style="width: 120px" data-bind=" optionsCaption: 'Choose...', options: $data.FilteredLCLoans,
optionsValue: 'LoanNum', optionsText: 'LoanNumCurrency', validationOptions: { insertMessages: false }, event: { change: $parent.LCLoanSelectionChanged }, value: $data.LCLoan, disable: $parent.disableButtons">
</select>
</td>
</tr>
In my viewmodel, I have the following variable used to generate the observables:
var buildRow = function (LCLoans) {
var self = this;
var obj = {
LCLoan: ko.observable(LCLoan).extend({ insertMessages: false, messagesOnModified: false, required: { onlyIf: validate, message: ' <BR /> LC Loans is Required' } }),
FilteredABLoans: ko.observableArray(ABLoans())
};
// Add to object after obj is created so we can use that instance
// using "this" to read the items DocStandby value
obj.FilteredLCLoans = ko.computed(function () {
return LCLoans().filter(function (item) {
return item.LoanSubType() === obj.DocStandby();
});
}, obj);
obj.errors = ko.validation.group(obj);
return obj;
};
The select list in the view uses fields from the filteredLCLoans observable for optionsValue (LoanNum) and optionsText (LoanNumCurrency). Here is the model that populates filteredLCLoans:
var ClientsModel = function (clientID, LoanNum, LoanSubType, LoanNumCurrency, CurrType) {
var self = this;
self.clientID = ko.observable(clientID);
self.LoanNum = ko.observable(LoanNum);
self.LoanSubType = ko.observable(LoanSubType);
self.LoanNumCurrency = ko.observable(LoanNumCurrency);
self.CurrType = ko.observable(CurrType);
};
The select list also refers to the function called LCLoanSelectionChanged. This is where I am trying to grab the NEW selected value when the user selects a different option from the select list. Here is that function:
var vm = {
activate: activate,
LCLoanSelectionChanged: function (row) {
var newValue = row.FilteredLCLoans.LoanNum;
}
};
return vm;
How do I get the newly selected value? If i put a breakpoint and use jQuery (var newValue = $('#ddlLCLoans option:selected').val()) I always get the first instances value of the ddlLCLoans in my view. I know the "var newValue = row.FilteredLCLoans.LoanNum" above does not work, just not sure how to code it correctly.