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Felipe Pieretti Umpierre

2012-Jun-14 22:45 UTC

return JSON in AJAX

hello guys, I''m trying to make a ajax request and return some data from
my controller, but how I do it to call the JSON in my JS after the
request ?

controller task

def create

    @task = Task.create( :project_id => params[ :project_id ], :name =>
params[ :task ] )

    if @task.valid?
      @return = { :task => @task.name, :project_id => @task.project_id }
    else
      @return = { :error => "Ocorreu um erro inesperado. Tente
novamente." }
    end

    return ActiveSupport::JSON.encode( @return )

  end

view index - JS

$( "#tasks_form" ).submit( function( e ) {

          e.preventDefault();
          var task = $( this).find( "textarea" ).val();

          $.post( "<%= url_for :controller => :task, :action =>
:create
%>", { task: task, project_id: <%= @project_id %> }, function( e )
{

          }, "json");

      } );

Thank you

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David Rhinehart

2012-Jun-15 03:32 UTC

head link

Re: return JSON in AJAX

Check here: http://api.jquery.com/jQuery.post/

There''s an example titled "Example: Posts to the test.php page and
gets
contents which has been returned in json format" about half way down the 
page.

On Thursday, June 14, 2012 5:45:07 PM UTC-5, Ruby-Forum.com User
wrote:>
> hello guys, I''m trying to make a ajax request and return some data
from
> my controller, but how I do it to call the JSON in my JS after the 
> request ? 
>
> controller task 
>
> def create 
>
>     @task = Task.create( :project_id => params[ :project_id ], :name
=>
> params[ :task ] ) 
>
>     if @task.valid? 
>       @return = { :task => @task.name, :project_id =>
@task.project_id }
>     else 
>       @return = { :error => "Ocorreu um erro inesperado. Tente 
> novamente." } 
>     end 
>
>     return ActiveSupport::JSON.encode( @return ) 
>
>   end 
>
> view index - JS 
>
> $( "#tasks_form" ).submit( function( e ) { 
>
>           e.preventDefault(); 
>           var task = $( this).find( "textarea" ).val(); 
>
>           $.post( "<%= url_for :controller => :task, :action
=> :create
> %>", { task: task, project_id: <%= @project_id %> },
function( e ) {
>
>           }, "json"); 
>
>       } ); 
>
> Thank you 
>
> -- 
> Posted via http://www.ruby-forum.com/. 
>
-- 
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Max Reznichenko

2012-Jun-15 14:39 UTC

head link

Re: return JSON in AJAX

Try using basic jquery ajax call i.e.

$.ajax({
   url : "your_url"
   // JSON data
}).done(function(response) {
   // here response will have JSON returned by task#create
});

пятница, 15 июня 2012 г., 1:45:07 UTC+3 пользователь Ruby-Forum.com User 
написал:>
> hello guys, I''m trying to make a ajax request and return some data
from
> my controller, but how I do it to call the JSON in my JS after the 
> request ? 
>
> controller task 
>
> def create 
>
>     @task = Task.create( :project_id => params[ :project_id ], :name
=>
> params[ :task ] ) 
>
>     if @task.valid? 
>       @return = { :task => @task.name, :project_id =>
@task.project_id }
>     else 
>       @return = { :error => "Ocorreu um erro inesperado. Tente 
> novamente." } 
>     end 
>
>     return ActiveSupport::JSON.encode( @return ) 
>
>   end 
>
> view index - JS 
>
> $( "#tasks_form" ).submit( function( e ) { 
>
>           e.preventDefault(); 
>           var task = $( this).find( "textarea" ).val(); 
>
>           $.post( "<%= url_for :controller => :task, :action
=> :create
> %>", { task: task, project_id: <%= @project_id %> },
function( e ) {
>
>           }, "json"); 
>
>       } ); 
>
> Thank you 
>
> -- 
> Posted via http://www.ruby-forum.com/. 
>
-- 
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Felipe Pieretti Umpierre

2012-Jun-17 18:17 UTC

head link

Re: return JSON in AJAX

Thank you guys for the answer, but I just did this:

render :json => ActiveSupport::JSON.encode( @return )

-- 
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Linus Pettersson

2012-Jun-17 21:18 UTC

head link

Re: return JSON in AJAX

You can read more about rendering JSON here:
http://guides.rubyonrails.org/action_controller_overview.html#rendering-xml-and-json-data


Den söndagen den 17:e juni 2012 kl. 20:17:32 UTC+2 skrev Ruby-Forum.com 
User:>
> Thank you guys for the answer, but I just did this: 
>
> render :json => ActiveSupport::JSON.encode( @return ) 
>
> -- 
> Posted via http://www.ruby-forum.com/. 
>
-- 
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Max Reznichenko

2012-Jun-18 09:53 UTC

head link

Re: return JSON in AJAX

You can also use respond_with method and change your 
render :json => ActiveSupport::JSON.encode( @return ) 
to
respond_with @return

But for using this, you have to specify responds_to :json in controller

воскресенье, 17 июня 2012 г., 21:17:32 UTC+3 пользователь Ruby-Forum.com 
User написал:>
> Thank you guys for the answer, but I just did this: 
>
> render :json => ActiveSupport::JSON.encode( @return ) 
>
> -- 
> Posted via http://www.ruby-forum.com/. 
>
-- 
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Rails - Jun 2012 - return JSON in AJAX

return JSON in AJAX

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