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9.2

still having problems creating a store that sorts by category

Asked by coutsuza in RubyOnRails

Tags: ruby on rails habtm

I am trying to create a store that has a partial which allows users to display products by category and I have been having some successes followed by some problems.  I would love a great working tutorial for this, but anyway 
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class Category < ActiveRecord::Base
  has_and_belongs_to_many :products
  acts_as_tree
 
 
  
  def ancestors_name
    if parent
      parent.name + ':'
    else
      ""
    end
  end
 
  def long_name
    ancestors_name + name
  end
 
  def products_including_child_categories
    result = products.clone
    children.each do |child|
      child.products_including_child_categories.each do |product|
        result << product unless result.include? product
      end
    end
    result
  end
end
 
 
<p>
  <b>Parent:</b>
  <%=h @category.parent_id %>
</p>
 
<p>
  <b>Name:</b>
  <%=h @category.name %>
</p>
 
<p>
  <b>Products:</b>
 
  <% for product in @products %>
  <tr class="<%= cycle('list-line-odd', 'list-line-even') %>">
    <td>
      <%= image_tag product.image_url, :class => 'list-image'%>
    </td>
 
    <td class="list-description">
      <dl>
        <dt><%=h product.title %></dt>
        <dd><%=h truncate(product.description.gsub(/<.*?>/,''), :length => 80) %></dd>
       
      </dl>
    </td>
    
  </tr>
 
<% end %>
  
</p>
 
<%= link_to 'Back', categories_path %>
 
 
class StoreController < ApplicationController
  before_filter :find_cart, :except => :empty_cart
  def index
    @products = Product.find(:all)
    @cart = find_cart
    
  end
 
  def add_to_cart
    product = Product.find(params[:id])
    @cart = find_cart
    @current_item = @cart.add_product(product)
    respond_to do |format|
      format.js if request.xhr?
      format.html {redirect_to_index}
    end
  rescue ActiveRecord::RecordNotFound
    logger.error("Attempt to access invalid product #{params[:id]}")
    redirect_to_index("Invalid product")
  end
 
  def empty_cart
    session[:cart] = nil
    redirect_to_index
  end
 
  def checkout
    @cart = find_cart
    if @cart.items.empty?
      redirect_to_index("Your cart is empty")
    else
      @order = Order.new
    end
  end
 
  def save_order
    @cart = find_cart
    @order = Order.new(params[:order])
    @order.add_line_items_from_cart(@cart)
    if @order.save
      session[:cart] = nil
      redirect_to_index("Thank you for your order")
    else
      render :action => 'checkout'
    end
  end
 
 
 
private
  def find_cart
    @cart = (session[:cart] ||= Cart.new)
  end
 
private
  def redirect_to_index(msg = nil)
    flash[:notice] = msg if msg
    redirect_to :action => 'index'
  end
 
protected
  def authorize
  end
 
end
 
 
 
<div id="product-list">
<table>
  <%= render(:partial => "product") %>
</table>
</div>
<br />
 
<p>
  <label for="category_id">View by Category</label></br>
  <%= collection_select(:category, :id, @all_categories, :id, :long_name) %>
  <%= observe_field(:category_id,
    :frequency => 2.0,
    :update => 'product-list',
    :url => {:action => 'change_filter'},
    :with => 'category_') %>
</p>
 
<% for product in @products %>
  <tr class="<%= cycle('list-line-odd', 'list-line-even') %>">
    <td>
      <%= image_tag product.image_url, :class => 'list-image'%>
    </td>
 
    <td class="list-description">
      <dl>
        <dt><%=h product.title %></dt>
        <dd><%=h truncate(product.description.gsub(/<.*?>/,''), :length => 80) %></dd>
      </dl>
    </td>
 
    <td>
      <div class="price-line">
      <span class="price"><%= number_to_currency(product.price) %></span>
      </td>
      <td>
      <% form_remote_tag :url => {:action => 'add_to_cart', :id => product } do %>
        <%= submit_tag "Add to Cart" %>
      </td>
      <% end %>
      </div>
 
    <td class="list-actions">
    <%= link_to 'Show', product %>
    <%= link_to 'Edit', edit_product_path(product) %>
    <%= link_to 'Destroy', product, :confirm => 'Are you sure?', :method => :delete %>
    </td>
 
 
 
  </tr>
 
<% end %>
[+][-]10/30/09 12:01 PM, ID: 25705889Expert Comment

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[+][-]10/31/09 11:20 AM, ID: 25710867Author Comment

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[+][-]11/01/09 08:04 PM, ID: 25717011Accepted Solution

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About this solution

Zone: RubyOnRails
Tags: ruby on rails habtm
Sign Up Now!
Solution Provided By: cminear
Participating Experts: 1
Solution Grade: A
 
 
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