How can I display values from relationship on column array? - ruby-on-rails

Question

I have 2 tables (users and meetings).
I'm trying to displaying the name of the user on table index view
users
|id| |name|
1 DEMO 1
2 DEMO 2
3 DEMO 3
meetings
|id| |user_id|
1 ["1", "2"]
2 ["2"]
3 ["2", "3"]
The Controller /app/controllers/meetings_controller.erb
def index
#meetings = Meeting.all
end
Models
#meeting.rb
class Meeting < ApplicationRecord
belongs_to :users
end
#user.rb
class User < ApplicationRecord
has_many :meetings
end
The View /app/views/meetings/index.html.erb
<table>
<thead>
<tr>
<td>id</td>
<td>User Names</td>
</tr>
</thead>
<tbody>
<% #meetings.each do |meeting| %>
<tr>
<td><%= meeting.id %></td>
<td><%= meeting.user_id %></td>
</tr>
<% end %>
</tbody>
</table>
I'm trying to display the user_id on array relationship and i tried this code:
I got the following error using the following code
undefined method `each' for "[\"1\", \"2\"]":String
<% meeting.user_id do |array|%>
<%= array.user.name %>
<% end %>
I got the following error using the following code
undefined method `each' for "[\"1\", \"2\"]":String
<% meeting.user_id do |array|%>
<%= array %>
<% end %>
I cannot display the value relationship because of column array.
Can you please help me with this issue?
Thanks in advance.

Answer 1

While there is nothing wrong with your approach, one comes to understand that the path of least resistance (= least pain) is to follow "The Rails Way".
So instead of answering your question, let me suggest that the relationship between your models should be:
# user.rb
class User < ActiveRecord::Base
has_and_belongs_to_many :meetings
end
# meeting.rb
class Meeting < ActiveRecord::Base
has_and_belongs_to_many :users
end
# you will also need to create a join table with a migration:
def change
create_join_table :meetings, :users
end
Then the view will include:
<% #meetings.each do |meeting| %>
<tr>
<td><%= meeting.id %></td>
<td><%= meeting.users.map(&:name).join(', ') %></td>
</tr>
<% end %>

Answer 2

I assume that you have a has_many relation between Meeting and User. That means that meeting.users will return the list of the users for the current meeting.
The following will return a comma-separated string with the names.
<table>
<thead>
<tr>
<td>id</td>
<td>User Names</td>
</tr>
</thead>
<tbody>
<% #meetings.each do |meeting| %>
<tr>
<td><%= meeting.id %></td>
<td><%= meeting.users.map(&:name).join(', ') %></td>
</tr>
<% end %>
</tbody>
</table>