Can I move this code from erb to the model? - ruby-on-rails

Question

I have 2 models Auteur and Biblio that both have_and_belongs_to_many of each other.
In the template displaying the Authors (auteur) and its books (biblio), I have this code :
<% #auteurs.each do |e| %>
<p><%= e.nom_complet %>, <i> <%= e.biblios.map{|l| l.titre }.join(', ') %></i>, <%= e.biblios.map { |l| l.lieu }.join(', ') %>, <%= e.biblios.map { |l| l.annee }.join(', ') %>
</p>
<% end %>
As each biblio has 8 fields and can belong to different types according to its form of publication and type of content, this would lead to doing a lot of map and if statements in erb.
Although this works fine, there must be a better way of doing this.
Thanks

Answer 1

You can move this code as instance methods in Author model
def biblios_titre
biblios.map(&:titre).join(', ')
end
def biblios_lieu
biblios.map(&:lieu).join(', ')
end
def biblios_annee
biblios.map(&:annee).join(', ')
end
And use it in views
<% #auteurs.each do |e| %>
<p><%= e.nom_complet %>,
<i><%= e.biblios_titre %></i>,
<%= e.biblios_lieu %>,
<%= e.biblios_annee %>
</p>
<% end %>

Answer 2

You can create a helper method in the model.
def view_biblios
self.nom_complet << "<i>" <<
self.biblios.map(&:titre).join ", " <<
"</i>, " << self.biblios.map(&:lieu).join ", " <<
", " << self.biblios.map(&:annee).join ", "
end
And in the view
<%= e.view_biblios.html_safe %>
UPDATE
Since you probably want to keep titles together, based on your comment, you may need this method instead
def view_biblios
self.nom_complet << self.biblios.map{|b|
"<i>#{b.titre}</i>, #{b.lieu}, #{b.annee}"}.join ", "
end

Answer 3

Thanks for all the answers. In the end I did it this way. Using each was sufficient. The code below also has a bit of css, to titles appear indented below each author (in bold).
I'll do all the cleaning up of the code and moving pieces to helpers after I get my 8 models to communicate correctly :)
<% #auteurs.each do |e| %>
<p><strong><%= e.nom_complet %></strong>
<% e.biblios.each do |l| %>
<br><span id="indent"><i><%= l.titre %></i>, <%= l.lieu %>, <%= l.annee.to_s %></span>
<% end %>
</p>
<% end %>