CODEWITHSUNDEEP
ruby-on-railsrubyjsonruby-on-rails-4
Igor Martins
Igor Martins

Reputation: 2047

Structure json inside controller

I need to do a json structure like this, but with more than 1 items:

charge = {
   items: [{
    name: "Product A",
    value: 1000,
    amount: 2
    }]
}

I have an @items that is @items.pluck(:name, :price) And I'm trying to create my json like this:

  charge = {
   items: [{
    @items.each do |item|
     'name:' = item.name,
     'value:' = item.price,
     'amount:' = 2
    end
    }]
}

And return this error:

SyntaxError in CoursesController#qualquer

syntax error, unexpected '=', expecting keyword_end
'name:' = item.name,

How i do this structure?

Upvotes: 0

Views: 76

Answers (1)

b-d-b
b-d-b

Reputation: 315

There are two things I see wrong. First, you're using "=" operator to set a Ruby Hash value. That's not correct, as Ruby hashes use symbols or strings. So your hash values will need to look like this:

{ "may_hash_key" => my.has_value }

or

{ my_hash_key: my.hash_value }

or

{ :may_hash_key => my.has_value }

Take your pick.

Additionally, if you are rendering JSON from your controller action, you can do something like this:

def index
  # presumably some setup code
  charge = {
    items: @items.map do |item| {
      name:   item.name,
      value:  item.price,
      amount: 2
    } end
  }
  render json: charge
end

If you are not rendering JSON from your controller action, what you can do is set @charge and interact with it as a Ruby hash in your view instead.

Upvotes: 4

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