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Lesson 3 - E-shop in ASP.NET Core MVC - Products and categories

In the previous lesson, E-shop in ASP.NET Core MVC - Identity, database, and layout, except for other things, we looked at controlling how the database is generated using migrations. In today's ASP.NET Core tutorial, we're going to extend our data model and add two basic entities - Products and Categories.

Products

Those are, of course, the basis of every e-shop. Our product will consist of the following attributes:

  • ProductId (int) - The product ID, primary key, autoincrement
  • Code (nvarchar 255) - Barcode for the merchant (e.g. EAN or anything else)
  • Url (nvarchar 255) - URL address of the product (e.g. green-flowerpot-ella) for better SEO optimization
  • Title (nvarchar 255) - Product title
  • ShortDescription (nvarchar 255) - A short description that will go to the HTML meta tag
  • Description (text) - A longer description for the product detail page, may contain HTML markup
  • Price (decimal(10,1)) - Product price
  • OldPrice (decimal(10,1)) - The old product price (if discounted)
  • Stock (int) - The number of items in stock
  • ImagesCount (int) - The number of pictures of the product
  • Hidden (bit) - Indicates whether the product is hidden (1/0, see below).

The only column that isn't mandatory (can be null) is OldPrice.

Data model

In the data project, add a new Product class to the Models/ folder and make it public (as well as all other data model classes). We'll add the class properties as listed above and attach attributes which we'll explain in a moment:


 

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In this ASP.NET tutorial, we'll create data models for products and categories, add DataAnnotation attributes to the properties and modify the DbContext.

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