Rails - One-direction table association - accessing data issue - ruby-on-rails

Question

I have two models:
class Order < ActiveRecord::Base
belongs_to :user
has_one :order_type
end
class OrderType < ActiveRecord::Base
belongs_to :order
end
my schema.rb:
create_table "order_types", force: :cascade do |t|
t.string "ort_name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "orders", force: :cascade do |t|
t.string "ord_name"
t.date "ord_due_date"
t.integer "user_id"
t.integer "ordertype_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "orders", ["ordertype_id"], name: "index_orders_on_ordertype_id"
add_index "orders", ["user_id"], name: "index_orders_on_user_id"
There is only one-direction association between them. The Order model has a column "ordertype_id" that links to the appropriate order_type.
My question is, what is the best practice to access the ort_name value for each #order in a view.
Currently, I am using:
<p>
<strong>Ord type:</strong>
<% OrderType.where(id: #order.ordertype_id).each do |t| %>
<%= t.ort_name %>
<% end %>
</p>
This solution results in many code repetitions. How I should change that? Can somebody advise, as I am not so experienced yet?
I tried this code, but it did not work:
#orders.order_type

Answer 1

There are many problems which you should address. It's ok to be a beginner, just take yourself time to learn and improve.
Schema
First off, your schema is set up badly. If you want to limit the order type to certain values, you should do this with a validation.
class Order
TYPES = %w[foo bar three four five]
validates :order_type, inclusion: { in: TYPES }
end
This way, you can easily add values in the future, and remove the complexity of adding a new model and its relations.
Column Names
Secondly, you should revise your column names. ord_name and ord_due_date is bad, it leads to ugly calls like order.ord_name. You should drop the prefix ord, it's superfluous.
Both steps would lead to this schema.rb
create_table "orders", force: :cascade do |t|
t.string "name"
t.date "due_date"
t.integer "user_id"
t.string "order_type"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
Logic placement
My final advice is to never call queries from your view. Logic should always be in the controller / model & passed to the view via instance variables.
This is a big no no in rails:
<% OrderType.where(id: #order.ordertype_id).each do |t| %>
...
<% end %>
In the end, accessing the type is simply accomplished with:
#order.order_type

Answer 2

Update your Order model to this:
class Order < ActiveRecord::Base
belongs_to :user
has_one :order_type, foreign_key: 'ordertype_id`
end
then order_type should be easily accessible:
#order.order_type.ort_name