Question

When record is created, it has an auto-generated id. I want to get it.

I created a table of names in Ruby On Rails.

I entered four names:

• Alon
• Bil
• Hilary
• Erez

In my table, there is an auto id, right? The name ‘Alon’ is assigned id=1, and so on – the name ‘Erez’ with id=4. this Id is not an id that I defined in my table.

I explain with another words:

When I enter the function ‘Show’ for the name ‘Alon’, it looks like: http://localhost:3000/mycontroller/1. (I think that ‘1’ is the id of where the name ‘Alon’ is found in my table.

How can I get this id?

def index
   @name = Tablenames.find(:all, :conditions => ["name=?", "Alon"]);
end

index.html.erb:

<% @name.each do |worker_name| %> worker_name.id <% end %>

Answer 1

When do you need the ID? Directly after creation?

user = User.create(name: "Alon")

puts user.id

When you’re searching for the name?

user = User.find_by_name "Alon"

puts user.id