Combining Multiple Models Into 1 View Rails - ruby-on-rails-3

Question

I am a beginner working on a RoR app that allows users to update their resume with experiences and education. I have two models for these different items and would like to display them together in chronological order. I want to know how to set this up in my profile controller and view.
I'd like to adopt this same practice to a separate part of the app that will combine post and discussion items from users in the same way. However, currently, my focus is on the experience and education portion.
profiles/show.html.erb:
<% if #experiences.any? or #educations.any? %>
<div class="postExpOuter">
<% #experiences.each do |experience| %>
<div class="postExp">
<div>
<h2><%= experience.position %></h2>
<h3><%= experience.company %> | <%= experience.location %></h3>
<h4>
<%= experience.start_month %> <%= experience.start_year %>
<% if experience.end_year %>
<%= " - " + experience.end_month %> <%= experience.end_year %>
<% else %>
<span> - Present</span>
<% end %>
</h4>
</div>
</div>
<% end %>
<% #educations.each do |education| %>
<div class="postExp">
<div>
<h2><%= education.degree %></h2>
<h3><%= education.school %></h3>
<h4>
<% if education.end_year %>
<span>Class of </span><%= education.end_year %>
<% else %>
<%= education.start_year %><span> - Present</span>
<% end %>
</h4>
</div>
</div>
<% end %>
</div>
<% end %>

Answer 1

just hacked in my browser, don't know if it works directly:
<%- (#experiences.to_a + #educations.to_a).sort_by(&:end_year).each do |item| -%>
<%- if item.is_a? Experience -%>
your markup here...
<%- else -%>
your other markup here...
<%- end -%>
<%- end -%>
haven't written ERB since... uhh, long. basically it's just the following: merge the 2 ActiveRecord-Relations as Arrays into one big Array, sort them by the timestamp you want (you may add .reverse at the end if you want). While iterating through the list, check the type of object you have.
Hope this helps.

Answer 2

profiles_controller.rb:
class ProfilesController < ApplicationController
def show
#user = User.find_by_profile_name(params[:id])
if #user
#posts = #user.posts.all(:order => "created_at DESC", :limit => 3)
#experiences = #user.experiences.all(:order => "start_year DESC")
#educations = #user.educations.all(:order => "start_year DESC")
#items = (#experiences.to_a + #educations.to_a).sort_by(&:start_year).reverse[0,3]
render action: :show
else
render file: 'public/404', status: 404, formats: [:html]
end
end
end
profiles/show.html.erb:
<% if #items.any? %>
<div class="postExpOuter">
<% #items.each do |item| %>
<% if item.is_a? Experience %>
<div class="postExp">
<div>
<h2><%= item.position %></h2>
<h3><%= item.company %> | <%= item.location %></h3>
<h4>
<%= item.start_month %> <%= item.start_year %>
<% if item.end_year %>
<%= " - " + item.end_month %> <%= item.end_year %>
<% else %>
<span> - Present</span>
<% end %>
</h4>
</div>
</div>
<%- else -%>
<div class="postExp">
<div>
<h2><%= item.degree %></h2>
<h3><%= item.school %></h3>
<h4>
<% if item.end_year %>
<span>Class of </span><%= item.end_year %>
<% else %>
<%= item.start_year %><span> - Present</span>
<% end %>
</h4>
</div>
</div>
<% end %>
<% end %>
</div>
<% end %>