CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4rails-api
Tristan Vermeesch
Tristan Vermeesch

Reputation: 89

Adding restrictions to validate json data send to Rails API

So I've been creating a Rails API (A school project) and everything works fine, but now I want to add some restrictions to the POST endpoint. So here is my create endpoint when I'm going to foo.com/api/v1/slogans :

def create
  slogan = Slogan.new(slogan_params)
  if(slogan.save)
    render json: {
      status: 'SUCCESS',
      message: 'Saved slogan',
      data: slogan
    }, status: :ok
  else 
    render json: {
      status: 'ERROR',
      message: 'Slogan not saved',
      data: slogan.error
    }, status: :unprocessable_entity
  end
end

And these are my slogan_params : 

private def slogan_params
  params.permit(:firstname, :lastname, :email, :slogan)
end

Now how do I add restrictions to this, for example a character limit? I've already added one on my front end but I want to be sure that even if the front end is manipulated that the data don't get submitted if valid.

I thought about adding something in def create but not sure if that is the way to do it.

Upvotes: 0

Views: 59

Answers (1)

Avijit Majhi
Avijit Majhi

Reputation: 518

You can use

class Slogan < ActiveRecord::Base
  validates :email, presence: true
end

And in controller you can do

def create
  slogan = Slogan.new(slogan_params)
  if slogan.valid?
    slogan.save
    render json: {
      status: 'SUCCESS',
      message: 'Saved slogan',
      data: slogan
    }, status: :ok
  else 
    render json: {
      status: 'ERROR',
      message: 'Slogan not saved',
      data: slogan.errors
    }, status: :unprocessable_entity
  end
end

Upvotes: 0

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