Rails HTTP - POST

Question

I am sending HTTP POST request:

data = { id: 1, name: 'ABC' }

uri = URI.parse('http://localhost:3000/events')
http = Net::HTTP.new(uri.host, uri.port)
http.post(uri, data.to_json)

My routes file:

Rails.application.routes.draw do
  post '/events' => 'receiver#create'
end

Whereas create methods looks like:

def create
 package = {
  id: ,
  name: 
 }
end

How can I get access to data values passing via request? My goal is to assign it to new hash within create method

Could you try to change in your sending script to: data = { package: { id: 1, name: 'ABC' } }, and in your controller try to access it simply with params[:package]? — Paweł Dawczak
– Paweł Dawczak, Commented Aug 5, 2015 at 8:13
you should turn off CSRF token in controller and try again. protect_from_forgery :except => :create — scorix
– scorix, Commented Aug 5, 2015 at 8:26

EugZol · Accepted Answer · 2015-08-05 09:53:29Z

3

You should set Content-Type header in your request as well:

http.post(uri, data.to_json, {"Content-Type" => "application/json", "Accept" => "application/json"})

Then you can use params[:id] and params[:data] in your controller.

def create
  @package = {id: params.require(:id), data: params.require(:data)}
  head :no_content
end

head :no_content will render empty reply (so you can create view later). And params.require will ensure that your parameters is provided (otherwise controller will return 400 Bad Request response) – so you won't receive some strange undefined method ... of nil errors later in case you missed params in your request.

edited Aug 5, 2015 at 9:53

answered Aug 5, 2015 at 8:13

EugZol

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6 Comments

EugZol Over a year ago

Sure. What exactly do you want to do with that data from request?

mike927 Over a year ago

create a new hash and assign values from params to specified keys within my new hash

mike927 Over a year ago

status 200 and then I can create a new view and display there that hash

mike927 Over a year ago

now I get: Started POST "/events" for 127.0.0.1 at 2015-08-05 11:12:22 +0200 Processing by ReceiverController#create_package as JSON Parameters: {"id"=>1, "name"=>"ABC", "receiver"=>{"id"=>1, "name"=>"ABC"}} Completed 500 Internal Server Error in 5ms (ActiveRecord: 0.0ms) ActionView::MissingTemplate (Missing template receiver/create_package, application/create_package with {:locale=>[:en], :formats=>[:json], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :slim, :coffee, :jbuilder]}.

EugZol Over a year ago

Well, that's because you need to first create a new view. Or you could add head :no_content to the end of your controller to render empty response.

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