ruby on rails - Error occurred while parsing request parameters JSON::ParserError - 795: unexpected token at -

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i trying write api methods user sign on spree app. it's working on local machine not on server. here code of user_decorator_controller.rb

def sign_up         @user = spree::user.find_by_email(params[:user][:email])             if @user.present?           render "spree/api/users/user_exists", :status => 401 , return         end         @user = spree::user.new(user_params)         if !@user.save           unauthorized           return         end         @user.generate_spree_api_key!       end

and sign_up.v1.rabl 

object @user attributes :id, :spree_api_key, :email, :firstname, :lastname, :mobile  child(:bill_address => :bill_address)   extends "spree/api/addresses/show" end  child(:ship_address => :ship_address)   extends "spree/api/addresses/show" end

when curl server below request

 curl -v -h 'content-type: application/json' -h 'accept: application/json' -x post -d {"user":{"email":"ml5698@gmail.com","password":"12345678", "firstname":"m", "lastname":"l", "mobile":"9999888877"}} http://localhost:3000/api/users/sign_up

it gives me above error below extracts web server log

started post "/api/users/sign_up" 127.0.0.1 @ 2015-10-15 11:23:36 +0530   activerecord::schemamigration load (0.3ms)  select `schema_migrations`.* `schema_migrations` error occurred while parsing request parameters. contents:  {user:{email:ml5698@gmail.com,password:12345678,  json::parsererror - 795: unexpected token @ '{user:{email:ml5698@gmail.com,password:12345678,':   json (1.8.3) lib/json/common.rb:155:in `parse'   activesupport (4.2.4) lib/active_support/json/decoding.rb:26:in `decode'

i using ruby 2.2 , rails 4, json 1.8.3 , issue, please me resolve it.

your error in use of command line curl. use -d switch, , pass parameters it. parameters parsed until next space, parameters being passed in are

{user:{email:ml5698@gmail.com,password:12345678,

this you're seeing in error message, , not formed json, parsing error.

try quoting -d parameters so:

curl -v -h 'content-type: application/json' -h 'accept: application/json' -x post -d '{"user":{"email":"ml5698@gmail.com","password":"12345678","firstname":"m","lastname":"l","mobile":"9999888877"}}' http://localhost:3000/api/users/sign_up

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