CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3ruby-on-rails-4
user6528504
user6528504

Reputation:

Rails expected, got Array

I'm looking to get a id from a array and when get it shows this on the action add Order.new

Color(#70131258622840) expected, got Array(#70131401174240)

someone have any idea why?

product model

has_many :colorships
has_many :colors, through: :colorships

color model

has_many :colorships
has_many :products, :through => :colorships

product controller

def new
  Product.New
  @dropdown = @product.colors.collect { |co| [co.name, co.id] } 
end

def show
  Product.find(params[:id])
  color = product.colors.select { |i| [i.id] } 
end

def add
  product = Product.find(params[:id])
  if product
    color = product.colors.select { |i| [i.id] } 
    if order.nil? # create new order
      order = Order.new
      order.product = product
      order.color =   color        
    end
  end
end

Upvotes: 1

Views: 1027

Answers (2)

rohin-arka
rohin-arka

Reputation: 799

As you said you need array of ids. you can also get by product.colors.ids.

This will return array of ids of color.

Upvotes: 0

Ursus
Ursus

Reputation: 30071

color = product.colors.select { |i| [i.id] }

this line is giving you an array of colors, not a color. This would be more natural

color = product.colors.select { |i| i.id }

but select gives you an array as well, even of one element in this case. find gives you just the element you want or nil instead

color = product.colors.find { |i| i.id }

Upvotes: 3

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