I know MVC doesn't have autoposback functionality and that needs to be done using JS/JQuery, and that is when my problems start... don't know how to do it yet.
This is how I populate my ddl:
#Html.DropDownListFor(x => x.CurrentCountry,
new SelectList(Model.Countries.ToList(), "Code", "Name"))
and my URL have this format:
localhost/Products/?country=US¤cy=USD&category=17&page=2
How do I add postback functionality to take the selected country?
Thanks.
I know MVC doesn't have autoposback functionality and that needs to be done using JS/JQuery
Not necessary. You could put the dropdown in an HTML <form> and when the user submits this form the selected value will be sent to the server.
If on the other hand you want to transmit the selected value when the user changes selection then you need to use javascript and subscribe to the onchange event. For example if you use jQuery:
$(function() {
// subscribe to the change event of the dropdown
$('#CurrentCountry').change(function() {
// find the containing form and submit it
$(this).closest('form').submit();
});
});
Related
We are using a Kendo NumericTextBox widget to display a calculated value to the user. We want the value shown to change as the viewmodel changes, but we do not want the user to be able to edit the value.
We have tried:
- disabling the widget. This disables user interaction, as required, but it does not allow the value to be updated by the view model.
- setting the widget as readonly. This allows the value to be updated, and does not allow the user to change the value directly, but the look of the widget changes when the user clicks on it.
We are trying to find a way to have something in between these two, where the value can be changed programmatically, but not by the user. And where there is no visible effect when the user clicks on the widget.
Is this possible with a Kendo NumericTextBox?
Edit: The issue is that changes to the viewmodel are sent back to the server by serializing the form, and disabled inputs don't get included in the form serialization. This is not an issue with the widget itself, as pointed out by CodingWithSpike.
The widget seems to update fine when set on the viewmodel, and the widget is disabled.
See this example.
<input data-role="numerictextbox"
data-format="c"
data-min="0"
data-max="100"
data-bind="enabled: isEnabled,
value: selectedNumber">
<button type="button" data-bind="click: up">Incrament</button>
...
<script>
var viewModel = kendo.observable({
selectedNumber: 0,
isEnabled: false,
up: function () { viewModel.set("selectedNumber", viewModel.selectedNumber + 1); }
});
kendo.bind($("#example"), viewModel);
</script>
Disable the widget when rendering the page to the user - this will still show updated values when they are re-calculated from other input. Then re-enable the widgets just before serializing the form back to the server.
My question is somewhat related to this answer - https://stackoverflow.com/a/3458299/1635958.
I am working on Asp.Net MVC 3.0.
I have Page1 where I have many controls. When I click on a Button1, I want the ability to make a list of json objects (lets say List personList ) and send that list to a Controller action. I want the view to be opened as a dialog.
So I am trying something like
var $dialog = $('<div></div>')
.load("http://localhost:XXXX/Controler1/Action1")
.dialog({
autoOpen: false,
title: "SomeTitle",
width: 500,
height: 300
});
$dialog
.data("personList", personList)
.dialog('open');
Once I do this, I want the ability to deserialize this data at the controller's side and pass it to a view. Is this doable through this approach? Is there a better approach?
Edit
Requirement is something like this ->
1. Page1 will display a grid of book details.
2. There is an Action column for each row, which is a checkbox
3. User can select the rows he is interested in, and click on a button outside the grid for a specific Action.
4. I should be able to collate data about all the books selected, and pass that data onto a jQuery dialog that gets opened.
5. The jQuery dialog should display the collated data to the user and present him with the ability to take some extra actions.
Edit 2
What is the best practice to have modal dialogs in MVC?
I have a view which shows a grid of items. I want to provide the ability of selecting a subset of the rows, clicking a button, and opening a modal dialog with the selected rows for editing the selected rows and doing more actions. What is the best practice to get this done in MVC? When we click the button, if we call a controller, what is the recommended way to pass data to that controller?
I did it this way ->
I created a json object from the first page. Posted it to the controller as an ajax call. The controller renders a view as a result. I capture the response and display it as a jquery UI dialog. Worked for me.
I'm building an MVC3 application and would like to have a form with a dropdown list, and if the option the user requires is not there, then they can click on a link to open a modal popup box, fill a different form out, submit it and close the form, and repopulate the dropdown list which will contain the option they have just added.
I've looked at options of using either jQuery Ajax or MVC Ajax (e.g. Ajax.BeginForm, Ajax.ActionLink). Can anyone recommend the best one to use, and also point me in the direction of a good tutorial? Been having a good look today but can't find anything that really does what I'm looking for.
Thanks
I typically use jQuery in these situations. In this case I would use .ajax() post to perform the form's action. I would then add a handler in the .ajax()'s success event to add my new item to the dropdown using append, example minus all properties except for success handler:
$.ajax({
success: function() {$(myDropDown).append(theNewListItem);}
});
You can generate theNewListItem by having it created and returned from the server in the ajax call, or simly build it using the current form values, assuming the values have been validated.
I have an MVC 3 Razor Telerik grid. I have an Edit comand on the row.
When a user clicks on Edit (this places the grid in Edit mode with an Update and Cancel button), I want to set a property for two of the columns to readonly.
When the user clicks on Cancel or Update, I want to set the columns back to full permission.
I know there must be some properties in the controller I should be able to set when the Edit button is pressed for this, but have not seen any docs on how to accomplish this.
How can I do this?
I'm using version 2011.2.712.340 of the controls.
What your describing above sounds a little bit confusing. The purpose of the readonly property is to ensure that when your row enters edit mode the columns that had readonly explicitly set cannot be edited, which seems to be what you're looking for. When in regular read mode all columns will have the same permission whether or not readonly was set, since you are just viewing the data and not editing.
Edit after clarification from comment:
Seems like you want to have this field editable when you are inserting a record, but not when you edit the row. Well, this can be done using some JavaScript. If you use Ajax binding (the only way to fire this event) you can do the following by subscribing to the onEdit client-side event:
...
.ClientEvents(clientEvents => clientEvents.OnEdit("onEdit"))
...
And here's the JavaScript:
<script type="text/javascript">
function onEdit(e) {
var form = e.form;
var mode = e.mode;
if (mode == "edit") {
var country = form.Country; //Country is a public property of my Model
country.disabled = true;
}
}
As you can see above, I get the form with the associated edited row and specifically grab the field associated with the property I do not want to be edited and disable that input element.
I have a page with several forms on one page. I have a button (outside all forms) that I want to submit only ONE form, but all form data is getting submitted from all forms.
$("#indiv_save").click( function() {
alert($("#indiv_form").serialize()); // Shows only correct form
$.post("/admin/update", $("#indiv_form").serialize(), function(data) {
notify(data); // quick and easy feedback
});
});
The alert() call shows exactly what I want to submit, but then Firebug shows fields being submitted from all forms after the .post(), even though the serialize() function is identical.
All forms have different names and element ids.
What am I doing wrong?
You are making an ajax POST and returning. Depending on your button, it's going to attempt to submit the page's forms. What you need to do is prevent the default action:
$('#indiv_save').click(function(e)
{
e.preventDefault();
// Your Code Here
});
The default action for your button is probably "submit the form", and you are not preventing it.
Return false from your click function should do it.
The forms can't be inside a single all encompassing <form> tag, they have to be separated out in individual <form>'s instead.