Forum: Ruby on Rails Give me some quick start to Ajax

Hi all,

 Question
       Give me some quick start to Ajax but should be simple because i 
have
only theoretically knowledge of Ajax.


Thanks

Best Regards
Fahim Babar Patel

Fahim Patel ha scritto:
> Hi all,
>
> Question
> Give me some quick start to Ajax but should be simple because i have
> only theoretically knowledge of Ajax.

http://guides.rubyonrails.org/ajax_on_rails.html

On 7 November 2012 11:10, Tommaso Visconti <tommaso.visconti@gmail.com> 
wrote:
> Fahim Patel ha scritto:
>
>> Hi all,
>>
>> Question
>> Give me some quick start to Ajax but should be simple because i have
>> only theoretically knowledge of Ajax.
>
>
> http://guides.rubyonrails.org/ajax_on_rails.html

Am I going blind or is that not linked to from the index
http://guides.rubyonrails.org/index.html ?

Colin

Colin Law ha scritto:
>
> Am I going blind or is that not linked to from the index
> http://guides.rubyonrails.org/index.html ?

mmmm, yeah :)
I found it with google

On 7 November 2012 12:16, Tommaso Visconti <tommaso.visconti@gmail.com> 
wrote:
>>>> Give me some quick start to Ajax but should be simple because i have
> mmmm, yeah :)
> I found it with google

Does anyone here do docrails (are the guides maintained by docrails)?
It should be fixed.

Colin

I found this article on madebydna
http://madebydna.com/all/code/2011/12/05/ajax-in-r...

It really focuses on the rails ujs adapter

Thanks lot to all of you to reply .

I follow below link which work perfectly for me.
http://tekn0t.net/ajax-example-with-rails-3-and-jquery

The link which i have given up is have full code. Below i have shown 
only
confusing code to me.

I firstly clear that i seen first time respond_to keyword and different
type of formats .

I know code is working perfectly when i do manual testing, but 
technically
i am zero.
Q1  I don' t understood why there is create.js.erb and destroy.js.erb
 require?
Q2  What is this   format.js in controller ?Is this line call to
create.js.erb ?
Q3 below  code confuse me  .
If record save than call goes to format.html which send us to index page
than when call goes to format.js ?
*Or it work line by line ?i am just guessing .*
#################code#####################################################33

respond_to do |format|

      if @post.save
        format.html { redirect_to(posts_url,
                    :notice => 'Post was successfully created.') }
        format.js
      else
        format.html { redirect_to(posts_url) }
      end
    end
  end

#######################code##################################################


########################PostsController######################

class PostsController < ApplicationController
  def index
    @posts = Post.all
    @post = Post.new

    respond_to do |format|
      format.html
    end
  end

  def create
    @post = Post.new(params[:post])

    respond_to do |format|
      if @post.save
        format.html { redirect_to(posts_url,
                    :notice => 'Post was successfully created.') }
        format.js
      else
        format.html { redirect_to(posts_url) }
      end
    end
  end

  def destroy
    @post = Post.find(params[:id])
    @post.destroy

    respond_to do |format|
      format.html { redirect_to(posts_url) }
      format.js
    end
  end
end
################################################################################

################create.js.erb###############################################
$('#posts').prepend('<%= escape_javascript(render(@post)) %>');
$('#posts > li:first').effect('highlight', {}, 3000);
$('#post_form > form')[0].reset();

#################################################################################

######################destroy.js.erb#################################
$('#<%= dom_id(@post) %>').css('background', 'red');
$('#<%= dom_id(@post) %>').hide("fade", {}, 1500);
##################################################################################
Waiting for reply.
Thanks

Best Regards
Fahim Babar Patel

On 8 November 2012 06:34, Fahim Patel <pafahim@gmail.com> wrote:
> of formats .
> Or it work line by line ?i am just guessing .
A good way to understand code that is unclear is to experiment with it
and see what the effect is.  If you don't understand why files are
there at all then remove them (or empty them) and see what stops
working. If you don't understand what a method call does then study
the docs and google, and again experiment with changing it and see the
effect.  That way you will learn much more than simply having the
answer given to you.

Have you worked right through a tutorial such as railstutorial.org?  I
am sure I have already suggested that.

Colin