How to parse the json data or (json code) from Ruby on rails

Question

I have an Ruby on rails source,code now i want to parse the data, and send the data.In my code,it will fetches the name from user and display it,How to parse the data in ROR.

This is my controller.rb code

def index
    @hotels = Hotel.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @hotels }
    end
  end

  # GET /hotels/1
  # GET /hotels/1.json
  def show
    @hotel = Hotel.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @hotel }
    end
  end

  # GET /hotels/new
  # GET /hotels/new.json
  def new
    @hotel = Hotel.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @hotel }
    end
  end

  # GET /hotels/1/edit
  def edit
    @hotel = Hotel.find(params[:id])
  end

  # POST /hotels
  # POST /hotels.json
  def create
    @hotel = Hotel.new(params[:hotel])

    respond_to do |format|
      if @hotel.save
        format.html { redirect_to @hotel, notice: 'Hotel was successfully created.' }
        format.json { render json: @hotel, status: :created, location: @hotel }
      else
        format.html { render action: "new" }
        format.json { render json: @hotel.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /hotels/1
  # PUT /hotels/1.json
  def update
    @hotel = Hotel.find(params[:id])

    respond_to do |format|
      if @hotel.update_attributes(params[:hotel])
        format.html { redirect_to @hotel, notice: 'Hotel was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @hotel.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /hotels/1
  # DELETE /hotels/1.json
  def destroy
    @hotel = Hotel.find(params[:id])
    @hotel.destroy

    respond_to do |format|
      format.html { redirect_to hotels_url }
      format.json { head :no_content }
    end
  end

How to parse these data in ROR using Json HOw to write parsing json file for these data,how to do that one

Jitendra Patidar · Accepted Answer · 2013-05-10 07:12:46Z

2

    **Answer of my question**

This part we have to do in controller hotelscontroller.erb

  respond_to :json, :xml
      def index
        @hotels = Hotel.all

        respond_to do |format|
          format.html # show.html.erb
          format.json { render json: @hotels.to_json(:only => [ :id, :name ]) }
        end
      end

view/index.json.erb

[
  <% @hotels.each do |hotel| %>
    { 'id': <%= hotel.id %>, 'name': "<%= hotel.name %>" },
  <% end %>
]

routes.rb

get 'hotels' => 'hotels#index', :as => 'hotels'

answered May 10, 2013 at 7:12

Jitendra Patidar

3502 gold badges6 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Hauleth · Accepted Answer · 2013-05-09 14:25:11Z

1

There are many ways:

Create method to_json for each model

Create view named, i.e. hotels/index.json.erb and write JSON code using ERb templating engine

[
  <% @hotels.each do |hotel| %>
    { 'id': <%= hotel.id %>, 'name': "<%= hotel.name %>" },
  <% end %>
]

Use library like jbuilder (on the bottom of page is list of alternatives to JBuilder)

# hotels/index.json.jbuilder
json.array!(@hotels) do |hotel|
  json.id hotel.id
  json.name hotel.name
end

edited May 9, 2013 at 14:25

answered May 9, 2013 at 12:24

Hauleth

23.7k4 gold badges67 silver badges117 bronze badges

4 Comments

Jitendra Patidar Over a year ago

could you provide answer for my solution,i am new to one,

Jitendra Patidar Over a year ago

How to write json file for the above controller,could you give the solution

Jitendra Patidar Over a year ago

Dude this answer is enough or not?

Jitendra Patidar Over a year ago

stackoverflow.com/questions/16735851/…

Ramiz Raja · Accepted Answer · 2013-05-09 13:02:21Z

1

You can covert a hash to json by to_json method. For reference please see http://apidock.com/rails/ActiveRecord/Serialization/to_json

for example, if you want to write all hotels to external file.

file = File.open("hotels.txt", "w")
file.puts Hotel.all.to_json
file.close

this will write all hotels in external file hotels.txt

edited May 9, 2013 at 13:02

answered May 9, 2013 at 12:16

Ramiz Raja

6,0403 gold badges29 silver badges40 bronze badges

8 Comments

Jitendra Patidar Over a year ago

Dude could you give your answer,how to write the json file for my controller.I am new to json,give me answer for my question

Jitendra Patidar Over a year ago

I want to get the data from the user,that what in my code,its a scaffolding.how to parse the data,which user providing

Jitendra Patidar Over a year ago

could you provide solution for me @Ramiz Raja

Ramiz Raja Over a year ago

Do you want to write json version of user object to an external file?

Ramiz Raja Over a year ago

Do you want to write json version of user object to an external file?

|

Collectives™ on Stack Overflow

How to parse the json data or (json code) from Ruby on rails

3 Answers 3

Comments

4 Comments

8 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

4 Comments

8 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related