my app has an habtm relation b/w listings and categories. now from the categories index
page, a user filters select box to view listings in the show
page.
now i am not able to access images attached to listings in the category show
page.
listing.rb
attr_accessible :placeholder, :categories_ids
has_and_belongs_to_many :categories
has_attached_file :placeholder, :styles => { :medium => "300x300>", :thumb => "100x100>" }, :default_url => "/images/:style/missing.png",
:url => "/system/:hash.:extension",
:hash_secret => "longSecretString"
categories controller
def index
@categories = Category.all
end
def show
@categories = Category.find_by_sql ["select distinct l.* from listings l , categories c, categories_listings cl where c.id = cl.category_id and l.id = cl.listing_id and c.id in (?,?)" , params[:c][:id1] , params[:c][:id2]]
end
the sql just filters and displays the listings in show
page where i can show its attributes, but cant access the placeholder. note the plural @categories in show
categories show
page
<ul>
<% @categories.each_with_index do |c, index| %>
<% if index == 0 %>
<li class="first"><%= c.place %></li>
<%= image_tag c.placeholder.url(:thumb) %>
<li><%= c.price %></li>
<% else %>
<li><%= c.place %></li>
<li><%= c.price %></li>
<%= image_tag c.placeholder.url(:thumb) %>
<% end %>
<% end %>
</ul>
Access image from different view in a view with paperclip gem ruby on rails
this said to make the object plural and call a loop, wch shall allow to access the image.
it does not work in this case.
undefined method `placeholder' for #<Category:0x5c78640>
but the amazing thing is, placeholder will be displayed as an array of all images for all the listings if used as suggested in that stackoverflow, wch is, obviously, not the way i prefer. where's the issue? what am i missing?
