How do I PUT JSON data to Ruby on Rails using jQuery?
Solution 1
You need to set contentType in your options. contentType is what you are sending. dataType is what you expect back. You should carefully read the documentation on the options argument to ajax.
Solution 2
If you don't want to add scripts, you could do
$.parseJSON("some_jsonish_string")
Solution 3
You need to set contentType
to "application/json"
in your options; dataType
is only what you expect back.
Also, you need to serialize your data
field using JSON.stringify
:
$.ajax({
type: "PUT",
url: '/admin/pages/1.json',
data: JSON.stringify({ page : {...} }),
contentType: 'application/json',
dataType: 'json',
success: function(msg) {
alert( "Data Saved: " + msg );
}
})
Admin
Updated on June 20, 2022Comments
-
Admin almost 2 years
I am trying to send a jQuery Ajax PUT request that looks like this:
$.ajax({ type: "PUT", url: '/admin/pages/1.json', data: { page : {...} }, dataType: 'json', success: function(msg) { alert( "Data Saved: " + msg ); } });
My controller looks roughly like this:
respond_to do |format| if @page.update_attributes params[:page] format.html{ ... } format.json{ render :json => {:saved => 'ok'}.to_json } else format.html{ ... } format.json{ render :json => {:saved => 'fail'}.to_json } end end
but I get the following error.
The error occurred while evaluating nil.name /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/active_support/xml_mini/rexml.rb:29:in
merge_element!' /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/active_support/xml_mini/rexml.rb:18:in
parse' (DELEGATION):2:in__send__' (__DELEGATION__):2:in
parse' /Library/Ruby/Gems/1.8/gems/activesupport-2.3.2/lib/active_support/core_ext/hash/conversions.rb:154:in `from_xml' ... ...It is like Ruby on Rails is trying to parse the parameters as XML, but I want to use JSON!
What shall I do to put JSON to Ruby on Rails?