Simple AJAX example
I have a controller:
class QuestionsController < ApplicationController
def hello
puts "===============开发者_Python百科=====!!!==================="
@hello = "hey"
"some"
end
def test
end
test.rhtml:
<%= javascript_include_tag :defaults %>
<br/>
Click this link to show the current
<br/>
<%= link_to "hello",
{ :controller => "questions", :action => "hello" },
:update => 'time_div',
:remote => true %>.
<br/>
<div id='time_div'>
...
</div>
When I click on 'hello' link I see that hello() method was called, but html page remains the same. Why?
How do I need to change code to update HTML page?
Here is generated HTML page:
<!DOCTYPE html>
<html>
<head>
<title>Stack</title>
<script src="/javascripts/jquery.js?1286229922" type="text/javascript"></script>
<script src="/javascripts/jquery-ujs.js?1286229922" type="text/javascript"></script>
<meta name="csrf-param" content="authenticity_token"/>
<meta name="csrf-token" content="UKPX1dNCZhyTk8u71hR9KaUmufIire7Rhvg8t7cRSlM="/>
</head>
<body>
<br/>
Click this link to show the current
<br/>
<a href="/questions/hello" data-remote="true">hello</a>
<br/>
<div id='time_div'>
...
</div>
</body>
</html>
You can have your hello action like this:
def hello
#### your code goes here #####
respond_to do |format|
format.js { render :layout=>false }
end
end
And one file hello.js.erb
$("#time_div").html("some text");
And your link will be:
<%= link_to "hello", { :controller => "questions", :action => "hello" }, :remote => true %>.
problem here is you are not returning anything from the controller action, Since you are using AJAX you need to return the result as either .js or jason
have a look at this example, with rails3 and Jquery
https://github.com/nu7hatch/rails3-ujs-example
cheers
sameera
加载中,请稍侯......
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