I'm trying to make the "Google Instant" like experience (I'm not looking for Auto-complete).
Google instant is the dynamically change the "search result" as you type (not the suggestions, which can be achieved with auto complete).
The page will simply have a text input control, in which as your type, you get result below the text input control.
I know, I must make some async calls on "onKeyPress": So first how can I do that in jquery?
Second, any good tutorials on combining asp.net MVC with Razor and Ajax?
edited: as people were confusing auto-complete with instant result
The term that you should use is 'autocomplete'
Have a look at the link below:
http://docs.jquery.com/Plugins/autocomplete
It's server independant. Basically, on the server side, you must create a service, given a string return the possible values that relate to that string.
Hope this helps.
There is a great article here on how to create an instant search with Jquery, PHP and HTML
http://woorkup.com/2010/09/13/how-to-create-your-own-instant-search/
The one caveat I encountered was that you need to put the Javscript code inside a
$(document).ready(function(){
/*Your JS Instant Search goes here */
});
which wasn't clear from the article.
For ASP.NET MVC 3, create a controller/action that returns a JSON or JSONP object. If you're a beginner, this might trip you up as you will get CrossSiteJson errors. This link will help:
Ajax json post to Controller across domains, "not allowed by" Access-Control-Allow-Headers
From doing these two, I was able to do the instant search in MVC3 and it works really well.
Using Firebug or WebKit Web Inspector and Fiddler really helps.
It is still a variant of autocomplete, if you break it down:
Fire autocomplete on key presses.
Fire Ajax search on autocomplete success/load (whatever the event might be).
Writing number 2 is minimal work for you unless somebody has written a plugin that does both. It's a nice little project - write a plugin that combines a text box and div and does autosearch.
Related
I have a requirement of having the same URL throughout the application navigations. Like below
http://www.[Site Name]:com. (Here User should not have the idea of chaning the URL from one page to another page)
I am using ASP.NET MVC3 with latest Razor View Engine,
Can some body give suggestions on this?
Advanced Thanks,
Satish Kotha
This may make it very difficult for users to access your site - they won't be able to bookmark a specific page, for example.
It sounds like you want a single-page-app (e.g. like Google Mail or Reader). In this case, you have one page and make heavy use of AJAX. You can query the server via javascript, and send back Partial Views, or raw data in JSON format which can be rendered on the client, possibly via some kind of templating engine.
As Graham Clark has already mentioned, this functionality will most likely be frustrating for the user; however, achieving it depends on the complexity of your project. You may want to look into using jquery to load partial views into the main content area of your site.
When you click on your navigation you can use jquery's load() to replace the main content on the page. Jquery-load-with-mvc-2-partialviews is an interesting blog post that may give you more insight into what you would want to do. Your code to load content could look something like this:
$("#mainContent").load("/Controller/Action",
{parameter}, function () {
// perform javascript actions on load complete
});
I am building a webpage that needs to Query the database and display events in your area based on the users GeoLocation. I've seen this done so many times now on a lot of websites. But I have never built this functionality before.
I have the GeoLocation part functioning. When you land on the page it displays your zip code. I'm not sure how to grab that Zipcode from the div and query the database immediatley.? This webpage being is built using Orchard MVC/NHibernate.
Any suggestion would be helpful.
It sounds like you want the entire solution, but I'm not going to go into that kind of detail.
So I'll give you tips:
Use jQuery to grab the zip code from the DOM
Use jQuery to do an AJAX call to a action method in one of your controllers, passing the zip
Have the controller call the DB and hydrate the results into JSON
Have the controller return a JsonResult
Have jQuery handle the response of the AJAX call and do something meaningful
I am using Drupal 7, and I am building a web site, that has a contact form in the footer which should appear in every page. The requirements was to make this form work via Ajax, all examples I found on Internet was form that related to node.
So when I tried to apply the same concept, I faced the problem of rendering the form, so I have passed it to the template as a parameter like this:
$vars['node']->contactForm = drupal_get_form('nilecode_form');
When I render the form by using drupal_render_children($node->contactForm), all the fields were rendered but with no wrapping form tag.
So after frustration, and not very useful IRC chats, I am thinking to do it by using normal Ajax request.
Before doing so is there any solution, before doing it the bad way?
Thanks.
Take a look at my ajax form examples, the best way of achieving this is using a theme function for the form:
http://monchacos.com/monchacos/code/creating-forms-template-file-ajax-included
Theres an attachment in the post, so you can get the full code example.
My website uses ajax.
I've got a user list page which list users in an ajax table (with paging and more information stuff...).
The url of this page is :
/user-list
User list is created by ajax. When the user click on one user, he is redirected to a page which url is : /member/memberName
So we can see here that ajax is used to generate content and not to manage navigation (with the # character).
I want to detect bot to index all pages.
So, in ajax I want to display an ajax table with paging and cool ajax effetcs (more info...) and when I detect a bot I want to display all users (without paging) with a link to the member page like this :
JohnBob...
Do you think I can be black listed with this technique ? If you think so, could you please provide an alternative solution by keeping these clean urls and without redeveloping the user-list (without ajax) ?
Google support a specification to make AJAX crawlable:
http://code.google.com/web/ajaxcrawling/docs/specification.html
I did an experiment and it works:
http://seo-website-designer.com/SEO-Ajax-Google-Solution
As this is a Google specification, you won't get penalised (unless you abuse it).
Saying that, only Google support it at the moment (AFAIK).
Also, I believe following the concept of Progressive Enhancement is a better approach. That is, create a working html website then make the JavaScript enhance it
Maybe use the urls with an onclick to trigger your AJAX scripting? Like
Some URL
I don't think Google would punish you for this, you primarily use JScript, but you do provide a fall back for their bot, so your site doesn't get any less accessible.
EDIT
Ok, I misunderstood. Then my guess would be you basically have two options:
1. Write a different part of your site where bots end up, or,
2. Rewrite your current site to for example always give a 'full' page, with an option to only get, say, the content div. Then you can get only the content with JavaScript, but bots will always get a nice page.
I read some paragraphs in a book saying that it is not possible to do a partial postback for web, even AJAX is employed. Ajax will postback everything and update only ajaxfied controls.
However, on pages I made using ajax, I used Fiddler to monitor the transportation. I found when the page initial load, it loaded everything include pictures .... However, when I click a button and do a ajax postback. I can only see the some data were loaded.... Looks like it doesn't need to reload the whole page again.
I don't know if what I see is correct? Or the book I read is correct?
Thank you guys.
That depends what you put in the term "postback".
The AJAX call will send the complete form data back to the server, just as if the form was posted normally. The server will answer with a partial response that only contains the parts of the page that should be updated.
So, the request is not partial, but the response is.
I am not sure how you are posting back from the client side. I am guessing you are using UpdatePanels. How well you 'AJAX-ify' a web page depends on what method you employ.
UpdatePanels - Read Dave Ward's posting on them - http://encosia.com/2007/07/11/why-aspnet-ajax-updatepanels-are-dangerous/
PageMethods to post back to a web service, get the data and update the DOM to display the result
JQuery and other such AJAX frameworks to post back to a web service
I am sure the link above should clear things up a bit
I'm having a hard time understanding your terminology. I'm not really sure what a "postback" is, much less a "partial" one. I do know that one of the basic ways to transmit information to an HTTP server is via a POST request, which is usually used when submitting forms. If you mean to say that the entire form is transmitted when you click a submit button, I believe you'd be right.
You also seem to be doing something with AJAX, but it's difficult to tell. The whole point of AJAX is to have dynamic data displayed on a page without resorting to reloading it. Defining what to send and what to do with the results is entirely up to your own JavaScript. So unless you're using a framework, which you don't specify, there is no such thing as "ajaxified controls."
In any case, "AJAX" usually means using the XMLHttpRequest() method of modern browsers to send data to servers without refreshing the page. When you call this function, you specify exactly what data to send. This has nothing to do with HTML forms. One caveat: if you are indeed using a library for AJAX, it might impose additional limits on how you structure information to send.