i need to create a document to see my app running


this code (products/index) generates the error:


<td><%= link_to Category.find(product.category_id).name, 
category_path(product.category_id) %></td>


folow the code:

https://github.com/webofbits/ninjastore



<https://lh3.googleusercontent.com/-FjJ7cc6kDn8/VXX66y6HwTI/AAAAAAAABFk/k0Vq7ElQe0w/s1600/Sem%2Bt%25C3%25ADtulo-1.jpg>

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