Ruby format.json add text to model column

Question

I would like to add some text to a model when the json object is returned. For example

format.json { render :json => @user.to_json, :status => 200 }

The @user model contains a field called website. The user websites are in the format www.mysite.com, but I want the resulting json to display http://www.mymysite.com.

For example, there could be thousands of users.

@users = User.all  
format.json { render :json => @users.to_json, :status => 200 }

I don't want to go through all the users and update the website column one by one. Is there a way to define this in the model where the returned value of website is http:// + self.website?

The more I research this it looks like I would override the method def as_json(options = {}), but I'm not sure how to do it to modify the website field.

K M Rakibul Islam · Accepted Answer · 2015-08-31 05:00:42Z

1

You can have a method like the following in your User model class (app/model/user.rb):

def website_with_protocol
  "http://#{self.website}"
end

Then, you will be able to do: @user.website_with_protocol to get the user's website with http:// in the beginning.

Or, if you don't mind, you can override the website column in your database by defining a website method in the model class like this:

def website
  "http://#{self.read_attribute(:website)}"
end

So, now if you call: @user.website, then it will give you something like this: http://www.mymysite.com as the website is overridden in the model class.

P.S. Use the read_attribute method to read the website value in database.

edited Aug 31, 2015 at 5:00

answered Aug 31, 2015 at 4:46

K M Rakibul Islam

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