I need to set the value of a field in my form using rjs.
That field in question appears twice in my form and I want to set the value of the field found inside a particular div only.
The code below does not seem to work.
page[:mydiv_id][:book_bk_title].value = "myvalue"
My question is how do i set the value of a field by also specifying the div containing it. using rjs?
If you are using Jquery:
var div_id = "mydiv";
$("#"+div_id+" :input[ID^='input_id']").val('Field Value');
Related
I'm having some issues referencing a component to get its value. I have a simple form with a numberfield and a button. To test I just want to output the value of the numberfield when the button is clicked
I have a basic js function
var saveNewSats = function (component) {
console.log(component.getValue());
};
In razor I wire it together like this
X.Button()
.Text("Save")
.Listeners(l => l.Click.Handler = "saveNewSats(#{newSatsField});")
Where newSatsField is the html id of the numberfield. I tried to reference the field in multiple ways like App.newSatsField, but no luck. What is the correct syntax to get the value from the numberfield?
Best regards
So I found the solution.
I did set the InputId which renders the html id attribute. What I needed was to set the ID as this is the one referenced by ext.net. Now both the #{id} and Ext.Cmp syntax works as expected.
When you want to create a DateTime picker control with JQWidgets, you must define a div element and then call a function like this using Javascript:
$("#MyDivElementId").jqxDateTimeInput().
The problem is: I'm not able to figure out how I can use Model Binding of Asp.Net MVC with this syntax. I mean, the Model Binding feature will try to match key-value pair received from input controls in the form element and obviously, div element are not input control.
I found somebody who already resolved this problem using hidden field set with values of matching div JQWidgets element before submitting form but I don't like this solution; it's not natural and I must write to much code for a thing that should be simpler in my view.
Does anybody have more elegant solution?
If you set the "name" attribute of the DIV tag, the value from the DateTimeInput's Input tag would be submitted.
First of all when you submit id is not submited and i just opened that plugin demo. when you add code $("#MyDivElementId").jqxDateTimeInput(). it will create textarea with name MyDivElementId and when you submit then you will have the same value on server side. Other issue can be with date format since they would be probably different on client side and server side.
try to add input parameter for controller "DateTime MyDivElementId" and check if its null or not.
I need to send parameters with values in a BeginForm html.
Example:
# using (Html.BeginForm ("Create", "IncomeDeclaration", new {declarationAmount = document.getElementById ("element"). value}))
This value I can not get from the Model, as it is not found in the model.
I've tried several ways and nothing worked. If you could change the content of a ViewBag that'd be great.
I appreciate your support.
You can't mix and match Javascript (document.getElementById ("element")) with the C# form declaration. If you want a value submitted with the form, you should add a relevant form element inside the form declaration. If you don't want a regular form element (eg. a textbox), you can use a "hidden" input field. If you want, you can dynamically populate the hidden field using javascript.
I am using a strongly typed model for my view. I have a disabled text box whose value I update using javascript. The textbox is rendered using this
<%: Html.TextBoxFor(model => model.TotalAmount, new { disabled = "disabled"})%>
This renders a textbox with NAME and ID as 'TotalAmount'. TotalAmount is also a property on my model that binds to this view.
The javascript to update its value in the view is like this within its function:
document.getElementById('TotalAmount').value = {assigning new value here};
The function does get called and I can see the value in the disabled textbox when I change some value in another editable textbox. However, when I post this form to my action method as below :
[HttpPost]
public ActionResult Process (ProcessVM FormPostVM)
{
}
the disabled textbox property [TotalAmount] still has the old value but the editable textbox which I modified contains the new value I entered. Why does the disabled textbox not contain the javascript updated value?
I tried using
ModelState.Remove("TotalAmount");
in the action method above, but as I already figured it didn't work.
Any clues, tips?
Thanks for your time....
HTML input elements such as textboxes that have the disabled="disabled" attribute will never send their values to the server when the form is submitted. If you want to send the value to the server while still disabling the user from changing it you could make the textbox readonly:
<%= Html.TextBoxFor(model => model.TotalAmount, new { #readonly = "readonly" }) %>
Disabled inputs are never sent in a form submit, try using readonly attribute instead or hidden inputs
Disabled fields don't get posted. Try having a hidden form field that will send the value to the server, and set both TotalAmount and the hidden form field. On the server, use the value for the hidden field instead.
On a side note, since this looks like the order total, this is something I would recalcuate on the server rather than opening up the possibility of someone hacking the html and getting a discount on their product.
EDIT:
To the other's points, I'd forgotten about the readonly attribute. That will work too.
If you change it to use readonly rather than disabled, then this should give you the same functionality, but post the value.
Browsers don't post values back in disabled input controls, as you've discovered. Probably the easiest way to work around this is to hook onto form submission, and re-enable the input as the form is being submitted; the user won't have a chance to edit the value, and it should get posted with the rest of the request.
i think the last issue described it : please check it out :
Retrieving the value of a asp:TextBox
I have a field in my model - call it 'distance' - and I want to write a view that contains both a checkbox and a textbox.
If the checkbox is checked, the textbox becomes disabled and 'distance' gets the value 0 when the form is submitted.
If the checkbox is not checked, 'distance' gets whatever value is in the textbox when the form is submitted.
Anybody have any guidance how to do this? It's the logic of assigning a model value based on the state of both the controls that confusing me...
The UI behaviour can be accomplished with Javascript via an onclick event handler on the checkbox. The only value you need to submit is the input field whose value will be set to 0 or whatever is set manually.
With jQuery you would have:
$('#checkbox_id').click(function() { $('inputfield_id').val('0');
The Model behavior depends on what the checkbox represents. If it's an actual property on the Model, then you will need to check the value server-side as well as (optionally) using aleemb's javascript method.
If a check in that field simply represents a distance of zero, then aleemb's method will suffice.
Aleemb's answer worked like a charm, with a couple of minor modifications:
$("#Distance_checkbox").click(function() {
if ($(this).is(':checked')) {
$("#Distance_textbox").val(0);
$("#Distance_textbox").attr("disabled", true);
}
else {
$("#Distance_textbox").val("");
$("#Distance_textbox").attr("disabled", false);
}
});