Rails association works in the console but not in the view - ruby-on-rails

Question

to-many association between 2 modles. It works perfectly in the console but in the view just I get object-references appears like this:
#<Author:0x0000000434bf80>
#<Author:0x000000043485b0>
This appears in my view which has this code:
<h1 class="page-title">Articles</h1>
<hr>
<div class="category-container">
<ul class="category-titles">
<% #cat.each do |c| %>
<li><%= link_to c.catName, category_path(c) %></li>
<% end %>
</ul>
</div>
<br><br><br><hr>
<% #art.each do |t| %>
<p class="articles-list-page"><%= link_to t.artTitle, article_path(t) %></p>
<p><%= t.author %></p>
<% end %>
Here is my association in Author Model
class Author < ActiveRecord::Base
has_many :articles
end
and Here is my association in Article Model
class Article < ActiveRecord::Base
belongs_to :category
belongs_to :author
end
I could not understand why it is working well in the console but not in the view

Answer 1

It works fine in the view.
This line:
<p><%= t.author %></p>
outputs the author model. What you probably want to do is output the author name - something like
<p><%= t.author.name %></p>

Answer 2

You're attempting to output an ActiveRecord relation to the view. There's probably no situation ever where you'd want to display an entire ActiveRecord object in a view. Instead, you'd want to display particular attributes of the object.
Such as:
t.author.created_at
t.author.name
t.author.whatever
However, if there was some strange reason you wanted to output the entire object to the view, you could use inspect like so:
t.author.inspect
UPDATE:
To answer the other issue you're running into, you'll need to make sure that you actually have a related Author for each of the Articles before trying to output an Author attribute to the view. You can accomplish that like so:
<% if t.author.present? %>
<p><%= t.author.authName %></p>
<% else %>
<p>No author available</p>
<% end %>
Or like so, if you want to use a terniary operator to keep things on one line:
<p><%= t.author.present? ? t.author.authName : 'No author available' %></p>
Or if you don't care about returning a default value such as "No author available" if an author isn't available, then you could just do something like this:
<p><%= t.author.try(:authName) %></p>

Answer 3

You should delegate that author attributes to Article model
class Article < ActiveRecord::Base
belongs_to :category
belongs_to :author
delegates :authName, allow_nil: true
end
Also in your controller use following code
class ArticleController < ApplicationController
def index
#art = Article.includes(:author).all
end
end
And in your view use like bellow
<% #art.each do |t| %>
<p class="articles-list-page"><%= link_to t.artTitle, article_path(t) %></p>
<p><%= t.authName %></p>
<% end %>