Store json object in ruby on rails app

Question

I have a Json object that I have to store in a ruby on rails application.

How can I store a json object in a ruby on rails application?

Witch is the best way to do it?

I have tried with a jquery ajax request like this:

$.ajax({
    url: "/articles",
    type: "POST",
    data: { "article": { "title": "firsttitle", "text": "text of the article" } }
  });

but without success.

Edit:

Article controller:

def create
        render plain: params[:article].inspect
        #@article = Article.new(article_params)

        #@article = Article.create(article_params)
        #if @article.save
        #   redirect_to @article    
        #else
        #   render 'new'
        #end
    end

Edit:

It is working!

The ajax call:

  $.ajax({
    url: "/articles",
    type: "POST",
    data: datatosend,
    dataType: "json",
    success: dataSaved()
  });

  function dataSaved(){
    alert("Success on send data to server.");
    location.reload();
  }

And this controller:

def create
    @article = Article.new(article_params)

    if @article.save
        redirect_to @article    
    else
        render 'new'
    end
end

but the redirects didn't work. Can anyone explain me why the redirects didn't work? I didn't fully understand the mechanism of this ajax jquery calls to the controllers methods.

Hi marcpt, the information you provide is not enough. What did you try so far? You share javascript code, but it's not very relevant, this is how you send data to the server, what you are asking for is how to save it. — roman-roman
– roman-roman, Commented Sep 14, 2014 at 10:01
Have you created the article model with the title and attributes and set up a controller and routes? If so, please show us the code. — Martin Poulsen
– Martin Poulsen, Commented Sep 14, 2014 at 11:27
But there is another way to store a json object? I only know this way (but I don't know how to make it work). I have posted the controller that I'm using. Once I understand how is it done I will use it with a more complex json object that I generate in a JS diagram tool. But for know I'm just trying with this simple example. I have searched but I always found forms and I don't have a form I just have a json object and I want to store it. If you also can point me to some tutorial with this, I really appreciate. This must be simple but I'm new at developing in ruby on rails. — Mario
– Mario, Commented Sep 14, 2014 at 18:33

Christian Rolle · Accepted Answer · 2014-09-14 18:06:04Z

1

Just to answer your question:

How can I store a json object in a ruby on rails application?

Add an attribute to the model table you wish to store the JSON object and enhance the model like:

class Food < ActiveRecord::Base
  def ingredient= object
    write_attribute :ingredient, object.to_json
  end

  def ingredient
    JSON.parse(read_attribute :ingredient)
  end
end

and:

@food = Food.new ingredient: Ingredient.first
@food.ingredient

answered Sep 14, 2014 at 18:06

Christian Rolle

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