Invalid string in json text while trying to send json object to a controller

Question

I am trying to send json object from javascript to rails controller and i keep getting this error

  MultiJson::DecodeError (lexical error: invalid string in json text.
                                   tag=hello
                 (right here) ------^

I am using yajl,rails 3.1,jquery 1.6.

Yajl setup in gemfile gem 'yajl-ruby'

config/application.rb

 require 'yajl/json_gem'

My code

ajax function

    var myobj={"tag":"hello"};
    $.ajax({
    url: 'ips/create',
    type: 'post',
    contentType: 'application/json; charset=UTF-8',
    accept: 'application/json',
    dataType: 'json',
    data:$.param(myobj),

    success: function(res) {
        if (res.ImportResponse !== void 0) {
            console.log('Success: ' + res);
        } else if (res.Fault !== void 0) {
            console.log('Fault: ' + res);
        }
    },
    error: function() {
        console.error('error!!!!');
    }
   });

*In controller*

     parser = Yajl::Parser.new
     hash = parser.parse(request.body.read)

well, you set your contentType to json and instead sent a param string. That error makes complete sense. — user400654
– user400654, Commented Dec 6, 2012 at 15:27

user400654 · Accepted Answer · 2012-12-06 15:29:30Z

1

You should be sending json data with that request, not a param string.

...
data: JSON.stringify(myobj),
...

answered Dec 6, 2012 at 15:29

user400654

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1 Comment

katie Over a year ago

Thank you, the error is gone , now i just get missing template erreor

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