Ruby on rails method partials? - ruby-on-rails

Question

I was wondering if it is possible to create a method partial in ruby on rails, for example I have this code;-
#cart = Cart.where(:user_id => current_user.id).first if user_signed_in?
#slots = #cart.slots.first
#slot_list = [#slots.slot_one, #slots.slot_two, #slots.slot_three, #slots.slot_four, #slots.slot_five,
#slots.slot_six, #slots.slot_seven, #slots.slot_eight, #slots.slot_nine, #slots.slot_ten]
#user_products = []
#product = []
#slot_list.each do |item|
if item.nil?
p 'Item empty'
else
#product << item
end
end
#product.each do |item|
items = Product.where(:product_id => item).first
#user_products << items
end
Written in multiple methods to get the #user_products, I was wondering if there was a way so I don't have to write this all the time and possibly run a method or use a partial?
Would it be worth creating a helper that does this and returns the #user_products variable?

Answer 1

I took my own advice and created two helpers, one to return the #user_products and another to return the #total.
I added the names of the methods to our helper_method
helper_method :user_is_admin?, :authenticate_admin!, :product_available?, :get_user_products!, :get_user_total!
then added these two methods at the bottom of the file;-
get_user_products!
def get_user_products!
#cart = Cart.where(:user_id => current_user.id).first if user_signed_in?
#slots = #cart.slots.first
#slot_list = [#slots.slot_one, #slots.slot_two, #slots.slot_three, #slots.slot_four, #slots.slot_five,
#slots.slot_six, #slots.slot_seven, #slots.slot_eight, #slots.slot_nine, #slots.slot_ten]
#user_products = []
#product = []
#slot_list.each do |item|
if item.nil?
p 'Item empty'
else
#product << item
end
end
#product.each do |item|
items = Product.where(:product_id => item).first
#user_products << items
end
return #user_products
end
get_user_total!
def get_user_total!
#total = 0
#cart = Cart.where(:user_id => current_user.id).first if user_signed_in?
#slots = #cart.slots.first
#slot_list = [#slots.slot_one, #slots.slot_two, #slots.slot_three, #slots.slot_four, #slots.slot_five,
#slots.slot_six, #slots.slot_seven, #slots.slot_eight, #slots.slot_nine, #slots.slot_ten]
#user_products = []
#product = []
#slot_list.each do |item|
if item.nil?
p 'Item empty'
else
#product << item
end
end
#product.each do |item|
items = Product.where(:product_id => item).first
#user_products << items
end
#user_products.each do |p|
#total += p.product_price
end
return #total
end
To use these methods inside whatever controller you then do the following;-
#user_products = get_user_products!
#total = get_user_total!

Answer 2

I assume this is in a controller?
What you want is to use plain old Ruby objects (POROs). So, you might have something like this:
class UserProducts
class << self
def get(options={})
#cart = Cart.where(:user_id => current_user.id).first if user_signed_in?
#slots = #cart.slots.first
#slot_list = [
#slots.slot_one,
#slots.slot_two,
#slots.slot_three,
#slots.slot_four,
#slots.slot_five,
#slots.slot_six,
#slots.slot_seven,
#slots.slot_eight,
#slots.slot_nine,
#slots.slot_ten
]
#user_products = []
#product = []
#slot_list.each do |item|
if item.nil?
p 'Item empty'
else
#product << item
end
end
#product.each do |item|
items = Product.where(:product_id => item).first
#user_products << items
end
end
end
Then, in your controller, you'd do something like:
class FooController < ApplicationController
def index
UserProducts.get(user_id: current_user.id)
end
end
So, UserProducts is essentially a service object. I think some people call them use cases. I tend to call them 'managers'. I put them in their own directory as app/managers/user_products.rb.