I need to return to my Rails view more than one variable from method... But how could i do this?
For example now i have
def my1
@price = 1
@price
end
but how could i also return other valuem somethin like:
def my1
@qnt = 2
@price = 1
@price, @qnt
end
?
Also my idea is to split them to string like
@price + "/-/" + @qnt
and then just split them via /-/ in view.... But this is a bad practice... So how could i get from one method two or more variables?
Return an array:
def my1
qnt = 2
price = 1
[price, qnt]
end
then you can do this:
p, q = my1() # parentheses to emphasize a method call
# do something with p and q
Or you can return a custom object, like this:
require 'ostruct'
def my1
qnt = 2
price = 1
OpenStruct.new(price: price, quantity: qnt)
end
res = my1() # parentheses to emphasize a method call
res.quantity # => 2
res.price # => 1
Use another object that will hold the variables and return it. You can then access the variables from that object;
The easiest way is to return an Array:
def my1
@qnt = 2
@price = 1
[ @price, @qnt ]
end
price, quantity = my1
But you could also return a Hash:
def my1
@qnt = 2
@price = 1
{ :quantity => @qnt, :price = @price
end
return_value = my1
price = return_value[:price]
quantity = return_value[:quantity]
# or
price, quantity = [ return_value[:price], return_value[:quantity] ]
Or a custom Class:
class ValueHolder
attr_reader :quantity, :price
def initialize(quantity, price)
@quantity = quantity
@price = price
end
end
def my1
@qnt = 2
@price = 1
ValueHolder.new(@qnt, @price)
end
value_holder = my1
price = value_holder.price
quantity = value_holder.quantity
# or
price, quantity = [ value_holder.price, value_holder.quantity ]
You could use OpenStruct as Sergio mentioned.
