Duplicate Results From Search Params - ruby-on-rails

Question

I have a search method and two models, restaurants and menus.In the menu search method, if I search for "chicken" it shows the closest restaurants near the location that sells meals with word chicken example "chicken sandwich" with the use of association. The problem is, if a restaurant sells multiple chicken meals the restaurant is rendered several times.I want to be able to show restaurants once and when the button is clicked a modal shows the meals with "chicken" in the name using a loop if there are multiple meals with chicken. I tried adding uniq & uniq(&:restaurant_id) in the ActiveRecord and also controller & also trying "DISTINCT" using sql but nothing.
Controller
def search_for_menus
##restaurant= Menu.restaurant.all
#menus = Menu.search_for_menus(params)
end
Menus Model
belongs_to :restaurant
reverse_geocoded_by "restaurants.latitude", "restaurants.longitude"
def self.search_for_menus(params)
menus=Menu.where("dish LIKE ?", "%#{params[:dish]}%") if params[:dish].present?
menus = menus.where("menus.price <=?",params[:max ])
menus = menus.where("menus.price >=?",params[:min ])
menus= menus.joins(:restaurant).near(params[:location],2)
menus
end
end
Search Page HTML
<% if #menus.present? %>
<%#menus.each do |menu| %>
<br>
<br>
<div id ="restaurants">
<div class="box">
<div class="thumbnail box-image">
<%= link_to (image_tag (menu.restaurant.thumbnail.url(:medium))),restaurant_path(menu.restaurant),'data-no-turbolink' => true%>
<div class="caption">
<h3 class="text-center"><%=menu.restaurant.name%></h3>
<p class="text-center">View Food</p>
</div>
</div>
</div>
<div id="modal-<%= menu.id %>" class="modal fade bs-example-modal-sm" tabindex="-1" role="dialog" aria-labelledby="mySmallModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-body">
<div class="col-md-6">
<p><%= menu.dish %></p>
</div>
<div class="col-md-6">
<p><%= menu.price %></p>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">OK</button>
</div>
</div>
</div>
</div>
</div>
<%end%>
</div>
<%else%>
<p>no posts</p>
<%end%>

Answer 1

What you need to start with, I think, is the restaurants for which there exists a matching menu item.
restaurants = Restaurant.near(params[:location],2).
where(Menu.where("menus.restaurant_id = restaurants.id").
where("dish LIKE ?", "%#{params[:dish]}%").
where("menus.price <=?",params[:max ]).
where("menus.price >=?",params[:min ]).exists)
This is guaranteed to return one row per restaurant.
You might want ILIKE for a case insensitive dish search, if your RDBMS supports it.
You can then list the appropriate menu items for the matching restaurants.

Answer 2

After discussing over chat, here's an update, thanks #David for the query.
Menu model:
belongs_to :restaurant
reverse_geocoded_by "restaurants.latitude", "restaurants.longitude"
def self.search_for_restaurants(params)
Restaurant.near(params[:location],2).
where(Menu.where("dish LIKE ?", "%#{params[:dish]}%").
where("menus.price <=?",params[:max ])
where("menus.price >=?",params[:min ]).exists)
end
Put this in the restaurant model (here you are going to fetch all the matching menus for the view):
def search_for_matching_menus dish
menus.where("dish LIKE ?", "%#{dish}%")
end
View (you have to adjust it to your needs, I just want you to understand the idea):
<% if #restaurants.present? %>
<%#restaurants.each do |restaurant| %>
<br></br>
<br></br>
<div id ="restaurants">
<div class="box">
<div class="thumbnail box-image">
<%= link_to (image_tag (restaurant.thumbnail.url(:medium))),restaurant_path(restaurant),'data-no-turbolink' => true%>
<div class="caption">
<h3 class="text-center"><%=restaurant.name%></h3>
<%= restaurant.search_for_matching_menus(#dish).each do |menu| %>
<%= menu.id %>
<% end %>
</div>
</div>
</div>
<%end%>
<%end%>
And finally this has to go on the controller that calls the search, to forward the dish parameter:
#dish = params[:dish]