Learning Ruby on Rails. Syntax issue - ruby-on-rails

Question

I'm new to Ruby, Rails and programming in general, so please forgive me if the question is very trivial.
I have this view:
<h1>Listing products</h1>
<table>
<tr>
<th>\</th>
<th></th>
<th></th>
<th></th>
</tr>
<% #products.each do |product| %>
<tr>
<td><%= product.\ %></td>
<td><%= link_to 'Show', product %></td>
<td><%= link_to 'Edit', edit_product_path(product) %></td>
<td><%= link_to 'Destroy', product, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</table>
<br />
<%= link_to 'New Product', new_product_path %>
When I try to access the link http://localhost:3000/products I receive an error:
SyntaxError in Products#index
Showing C:/Sites/depot/app/views/products/index.html.erb where line #13 raised:
C:/Sites/depot/app/views/products/index.html.erb:13: syntax error, unexpected $undefined
...tput_buffer.append= ( product.\ );#output_buffer.safe_concat...
... ^
C:/Sites/depot/app/views/products/index.html.erb:18: syntax error, unexpected keyword_end, expecting ')'
'); end
^
C:/Sites/depot/app/views/products/index.html.erb:25: syntax error, unexpected keyword_ensure, expecting ')'
C:/Sites/depot/app/views/products/index.html.erb:27: syntax error, unexpected keyword_end, expecting ')'
Extracted source (around line #13):
10:
11: <% #products.each do |product| %>
12: <tr>
13: <td><%= product.\ %></td>
14: <td><%= link_to 'Show', product %></td>
15: <td><%= link_to 'Edit', edit_product_path(product) %></td>
16: <td><%= link_to 'Destroy', product, method: :delete, data: { confirm: 'Are you sure?' } %></td>
Trace of template inclusion: app/views/products/index.html.erb
I was just following an example in a book to learn Rails, so basically I've done nothing to code this view.
Can someone point me to the right direction?

Answer 1

You need to put <%= product.name %> (substitute in desired attribute) instead of <%= product.\ %>
The little tiny caret under the the incorrect syntax gives you an indication of what is tripping the error.

Answer 2

Rewrite the code # app\views\products\index.html.erb" as follows:
<h1>Listing products</h1>
<table>
<% #products.each do |product| %>
<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><%= product.title %></dt>
<dd><%= truncate(strip_tags(product.description),
length: 80) %></dd>
</dl>
</td>
<td class="list_actions">
<%= link_to 'Show', product %><br/>
<%= link_to 'Edit', edit_product_path(product) %><br/>
<%= link_to 'Destroy', product, method: :delete,
data: { confirm: 'Are you sure?' } %>
</td>
</tr>
<% end %>
</table>
<br />
<%= link_to 'New product', new_product_path %>
Rewrite the code # app\controllers\products_controller.rb as follows:
class ProductsController < ApplicationController
# GET /products
# GET /products.json
def index
#products = Product.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: #products }
end
end
# GET /products/1
# GET /products/1.json
def show
#product = Product.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: #product }
end
end
# GET /products/new
# GET /products/new.json
def new
#product = Product.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: #product }
end
end
# GET /products/1/edit
def edit
#product = Product.find(params[:id])
end
# POST /products
# POST /products.json
def create
#product = Product.new(params[:product])
respond_to do |format|
if #product.save
format.html { redirect_to #product,
notice: 'Product was successfully created.' }
format.json { render json: #product, status: :created,
location: #product }
else
format.html { render action: "new" }
format.json { render json: #product.errors,
status: :unprocessable_entity }
end
end
end
# PUT /products/1
# PUT /products/1.json
def update
#product = Product.find(params[:id])
respond_to do |format|
if #product.update_attributes(params[:product])
format.html { redirect_to #product,
notice: 'Product was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: #product.errors,
status: :unprocessable_entity }
end
end
end
# DELETE /products/1
# DELETE /products/1.json
def destroy
#product = Product.find(params[:id])
#product.destroy
respond_to do |format|
format.html { redirect_to products_url }
format.json { head :no_content }
end
end
end

Answer 3

rails generates very useful logs. Read it once it gives you line number and file name.
replace <%= product.\%> with <%= product.name %> where name is the attribute of product.