I have a Todo List (an ASP.MVC UserControl) that for each row has the name of the task (that can be clicked to toggle between done/outstanding) and a delete button for removing the task - Both are created using Ajax.ActionLink to query the server.
When creating a new row I need the task text and delete button to be ActionLinks, how would I do this from the client side? Is there an Ajax.ActionLink equivalent in the Microsoft Ajax JS libraries?
Take a look at the code that is being generated using View Source. All you need to do is add the same markup and add the correct click handler via javascript. You may find it actually easier to do this with jQuery for all elements and add the jQuery code in your UserControl. At least that way you control the code and if Microsoft decides to change the way their ActionLink works, you won't get caught short.
Related
I'm trying to make a drop down menu that has a bunch of items (Amelia, Cerulean, Cosmo, Cyborg, Flatly, Journal). Each of these items represent a css file.
When one of them is selected I want my website to take this selected css file and apply it to the website.
I would like the drop down menu to interact with jquery, meaning when a item is selected jquery takes over and makes a asyn/ajax call to some mvc actionresult.
By the way I'm using MVC 5.
I hope someone can help me sketch the initial groundwork.
I've implemented this in my application.
I'm not sure what to tell you though. It's easier when we have an attempted solution to fix.
Here's an overview of how mine works:
I have created a controller called SharedController. The purpose of it is to contain various actions that render common actions. All of the actions are considered ChildActionOnly.
My _Layout uses RenderAction to render the action NavbarPartial which is in my SharedController.
More importantly the Navbar partial then uses RenderAction to render the action ThemeListPartial. This action is responsible for getting a list of available themes. The list of available themes is determined at applications startup. I've created a ThemeFinder class and ThemeRepository class that are responsible for finding and storing themes. The ThemeFinder finds themes by expressions that you give it. In a new class called App_Start/ThemeConfig I've given it only one expression - "~/Content/themes/{name}.bootstrap.css". This will find all themes with that naming convention in that location.
My razor code will take the ViewModel and display a dropdown menu in the navbar.
To get the themes to change my dropdown menu contains an AJAX link to an action called SaveTheme in ThemeController. This action takes a theme name as a string and tries to save it in a cookie for the user.
If the theme is found and saved successfully, the action responds with a success message.
jQuery then changes the theme by finding the associated link attribute and changing the HREF contents to the new theme. It knows the new theme relative URL because I have it stored in data attributes.
I completed this before I made the switch to AngularJs. The one thing I plan to go back and change is to cut out as much (maybe all) jQuery as possible and replace it with better code.
Select boxes converted to Select2, do not automatically integrate with unobtrusive validation mechanism in ASP.NET MVC framework.
For example, on a form which contains a regular select box (marked as required in model definition), submitting the form while no options have been selected in the select box, will cause the border and background of the select box to take a reddish color, and by using #Html.ValidationMessageFor, error messages, if any, can be displayed beside the box. However if the select box is converted to a Select2 component, then none of the mentioned features work any more. Even the validation error message will not show up.
It seems that the reason for even the validation error message not showing, is because Select2 changes the display CSS property of the original select box to none (display:none), and I guess the unobtrusive validation script does not bother generating error messages for invisible fields.
Any ideas / solutions?
This issue isn't really specific to Select2, but rather to the jQuery unobtrusive validator.
You can turn on validation for hidden fields as highlighted in this answer.
$.validator.setDefaults({
ignore: ''
});
As the comments noted, it didn't work inside an anonymous callback function within $(document).ready(). I had to put it at the top level.
I've run into similar issues with the select2 plugin. I don't know exactly which features you're using specifically, but in my experience, when you set an element as a select2 in the document.ready event, the plugin will change some of the element's attributes on the fly (inspect one of the elements after your page has finished loading - oftentimes you'll see the id and class properties are different than what you're seeing when you view source).
It's difficult to offer more without actually seeing the code, but here's a few ideas to get you started:
First off, obviously make sure you have the a link to your select2.css stylesheet in the header.
Then, since you're talking about form submissions, I'd recommend you examine whether or not you're getting a full postback or submitting via AJAX (if you're using jQueryMobile, you're using AJAX unless you override it in the jquerymobile.js file or set a data-ajax="false" in your form attributes). You can just look at the value returned by Request.IsAjaxRequest() for this. Obviously if you're submitting via ajax, you won't hit the document.ready event and the select2 won't initialize properly and you'd need to figure out a way around that. Try refreshing the page after the submit and see if it renders the select2 component.
Then I'd suggest examining the elements and see if they're not behaving like you'd expect because you're actually trying to work with classes that the plugin has reassigned at runtime. You can either just adjust your logic, or you can dig into the select2 code itself and change the behavior - it's actually fairly well-documented what the code is doing, and if you hop on the Google group for select2, Igor is usually pretty quick to follow up with questions.
like this
$('select').on('select2:select', function (evt){
$(this).blur();
});
$('body').on('change', 'select.m-select2', function () {
$(this).blur();
})
I have an MVC application. In which i have a textbox according to the textbox values I want to list search items from database to grid in view without postback. I am new to MVC if this question is wrong, kindly correct me.
If your new to ASP.NET MVC i suggest these tutorials, they are free.
http://www.asp.net/mvc/pluralsight
To answer your question you will need to do the following (high level)
write some JavaScript / JQuery that makes an Ajax request sending the textbox value, this should fire on the KeyUp event after a little delay, also after x amount characters have been entered to get some meaningful results.
This Ajax request will call a Controller Action where you can do the Database Lookup, this will return JSON.
Your Javascript should render the results so the user can select a result and this will populate the textbox, the user can then click the search button to do the search
http://jqueryui.com/autocomplete is a plugin that can do most of the client side functionality that I mentioned above.
This is a nice ASP.NET MVC AJAX tutorial:
http://pluralsight.com/training/players/PSODPlayer?author=scott-allen&name=mvc3-building-ajax&mode=live&clip=0&course=aspdotnet-mvc3-intro
UPDATE
Your Javascript should render the results so the user can select a result and this will populate the textbox, the user can then click the search button or this could be fired without the last click, anyhow you will have to re-bind / render your grid with the selected filter applied, this would have to be another AJAX request.
You may want to consider using one of these to help with the data binding and AJAX calls
Flexigrid: http://flexigrid.info/
jQuery Grid: http://www.trirand.com/blog/
jqGridView: http://plugins.jquery.com/project/jqGridView
Ingrid: http://reconstrukt.com/ingrid/
SlickGrid http://github.com/mleibman/SlickGrid
DataTables http://www.datatables.net/index
I am looking for the best way to create ajax enabled subforms from items in a list with MVC 3. A static list of values should be generated, but with an "edit" link/button next to every item, to toggle inline edits.
I did follow the tutorial at this link
http://blog.janjonas.net/2011-07-24/asp_net-mvc_3-ajax-form-jquery-validate-supporting-unobtrusive-client-side-validation-and-server-side-validation [1]
However it is based on the form edit fields always being visible
I'd like to show a static list with field values, but let the user activate an edit field by clicking "edit" (e.g. button)
I did modify the example at [1] by creating a default partial view with a form with submit button only. When posting the data by ajax the edit form will show. It looks like it is working, (I only need to hide validation errors on the first POST - which does not send real data).
Update:
An even better solution would probably be to leave out all forms in the static view, just have a single css class button/link next to each item, and let jquery fetch the relevant view for the clicked item. I am not sure how to do that with MVC 3+jQuery though.
Another update:
I discovered Ajax.Actionlink, which did exactly what I wanted!
I found out how to do it, and it turned out to be real simple!
I created two partial views.
One for rendering each static item. I used used Ajax.ActionLink with InsertionMode "replace", and set the parent of the item as the target
The second for rendering the form. Here I used Ajax.Beginform with similar options.
On successfully saved data, I returned the static view, on failure, I returned the partial view with the ajax form again.
I'm happy I found a MVC-centric way to do it (although it is fun creating custom stuff with jQuery)
It sounds like you need an inline editing plugin for jQuery. I would try jEditable. I have not used it myself but appears to have extensive docs.
this entry might help: code + video + explanation ;)
http://ricardocovo.wordpress.com/2011/04/03/asp-mvc3-editing-records-with-jqueryui-dialogs-and-ajaxforms/
-covo
I am using a Telerik combobox and using jquery to make a clone of it.
the control is being rendered correctly, however the dropdown is not working I believe due to the fact the javascript has not been initialized on the control.
Is there a way to do this or a better way to make a duplicate of the control?
I may have to resort to making an ajax request but would ideally like to keep it all clientside.
Cheers,
Mark
After the clone you need to attach the AJAX call to it as follows.
var c = $('rowTemplate').clone();
c.find('selectorToGetInputControl').tAutoComplete({ ajax: { "selectUrl": "Your Ajax Call" },filter: 1 });
Not sure how you attempt to make a client clone of MVC server control using jQuery, I doubt such thing can operate properly. Either use another instance of the combo or go for pure client-side component.