Rails 4 search function - ruby-on-rails

Question

I have this simple search function:
class SearchController < ApplicationController
def index
if params[:search].blank?
redirect_to root_path
else
#results = Post.search(params[:search])
end
end
end
I want to implement the following functionalities but I am struggling to code:
1.How to record each of the input search terms and see whether which search terms are the most searched ones. I thought of using "first_or_create" method...
2.Give I have this title: "Peter Paul Mary", how do I split them and link_to each terms to search the search function
Please advise.

Answer 1

1.I think you can use two-dimensional array containing results of query for each single term.
#maching_posts = Array.new
#terms = params[:search].split
#terms.each do |term|
result = Post.where(title: term)
#maching_post << result
end
Now, you have array '#maching_post' containing results of query for each single term. Row [0] contains result of first term etc.
You can use this array to generate view. Like this:
<% #terms.each_with_index do |term, index| %>
<span>Results of <%= term %></span>
<% #maching_post[index].each do |post| %>
<%= post.title %></br>
<% end %>
<% end %>
2.To get single words from string you can use split() method.
"Peter Paul Mary".split
This method returns array ["Peter", "Paul", "Mary"]
To link each term, use
link_to 'term', controller: :search, action: :index, search: 'term'
You should use this method in loop, like
<% "Peter Paul Mary".split.each do |term| %>
<%= link_to term, controller: :search, action: :index, search: term %>
<% end %>