Rails Runtime Error in Controller#Index - Unsupported: Symbol -


i've implemented couple of different search forms in app trying achieve 1 specific action (input object id , go straight show page instance), , got close on 1 until ran unsupported: symbol runtime error cards#index.

here search form (i dropped layouts/application.html.erb:

<%= form_tag(cards_path, :method => "get") %>   <div class="input-append">     <%= text_field_tag :search, params[:search], class: "span2", placeholder: "search cards" %>     <button class="btn" type="submit"><i class="icon-search"></i></button>   </div> <% end %>

and here cards_controller.rb index action:

  def index     if params[:search]       @cards = card.search(params[:search]).order("created_at desc")     else       @cards = card.order("created_at desc")     end   end    def show   end    private    def set_card     @card = card.find(params[:id])   end    def card_params     params.require(:card).permit(:title, :description)   end

and model card.rb

class card < activerecord::base    validates :title, presence: true, uniqueness: true   validates :description, presence: true    def self.search(query)     where(:id, query)   end end

i using where("title ?", "%#{query}%") model, read crafting sql queries way security risk , looking exact matches.

so preventing view recognizing id parameter passed search?

there's nothing wrong view - problem search method, 

where(:id, query)

which isn't valid use of where.

it should be

where(id: query)

or, more old school:

where("id = ?", query )

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