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Drupal is a powerful CMS and is widely used. There are a wide range of modules available for Drupal and it is used for different types of websites. There are a great number of Drupal users who want to integrate Drupal and Zen Cart-as both are considered useful in their category. Until recently, there was no easy way to integrate Drupal and Zen Cart. Very recently, Zen Cart Integration module has been released as a development version. For now, it works on Drupal 5.x and Zen Cart 1.3.7. Once this module is installed and configured, you can create Zen Cart categories and products from Drupal. As other nodes, these products and categories will be displayed as nodes in Drupal. When visitors click on these products they see product details as a Drupal node, but when the product is added to cart, it redirects to the Zen Cart shop. This module also provides a single sign-on facility.

For integrating Zen Cart into Drupal, download the module from http://drupal.org/project/zencart. Before we proceed with the integration of Drupal and Zen Cart, assume that you have installed Drupal and Zen Cart on the same server. Let us suppose, Drupal is installed in e:wwwdrupal57 directory and Zen Cart 1.3.7 is in e:wwwzc directory, and these two uses separate database on the same MySQL server.

Follow these steps:

1. Download and unzip Zen Cart integration module: For integrating Zen Cart into Drupal, download the module from http://drupal.org/project/zencart. On your computer, unzip the zencart-5.x-1.x-dev.tar.gz package. You will get a folder named zencart, under which there are some files and a subfolder named zencart.
2. Copy files for Zen Cart: Inside the zencart subfolder you will find the includes folder. Copy this subfolder, that is /zencart/includes, to your Zen Cart installation directory, that is e:wwwzc. This will overwrite the e:wwwzcincludes directory, but will not overwrite any files. Once you have copied all the files in this folder, you are finished with Zen Cart.
3. Install Zen Cart installation module in Drupal: Copy the zencart directory with all the files inside it, except the zencart subfolder, to Drupal’s installation directory, that is e:wwwdrupal57. As an administrator in Drupal, you can install this module from Drupal’s Administer | Site Building | Modules section. In the module list you will see the Zen Cart Integration module group. You will find the following modules in this group:
   1. Zencart-This is the main module for integrating Zen Cart shopping cart to Drupal. This is required by other modules in this group.
   2. Zencart Catalog-This module allows creation of Drupal nodes for Zen Cart products and categories.
   3. Zencart Category Node Hierarchy-This module depends on the Node Hierarchy module and organizes Zen Cart products and categories. Download the Node Hirarchy module from http://drupal.org/project/nodehierarchy and install it before enabling this module.

   To enable these modules, select checkboxes in Enabled column and click Save configuration button at the bottom of the list.

   

4. Configure Zencart Integration module in Drupal: After enabling the modules, you can configure those from Administer | Site Configuration | Zencart Integration screen.
   1. The Zen Cart Status section will provide you information about your Zen Cart installation. The module will search and find the Zen Cart installation and show its version, path to Drupal installation and other information.
   2. The Zen Cart Settings section will give you the opportunity to mention the Zen Cart installation directory path. Type it into the Path to Zencart field.
   3. The Zen Cart Page Redirects section allows you to configure page redirects from the Zen Cart page to Drupal node.
   4. Zen Cart Catalog section allows you to configure redirect from the Zen Cart catalog items to Drupal. While using this integration module, you create Zen Cart catalog and products from Drupal. If you want to create these categories and products from inside Zen Cart and synchronize those with Drupal, then check Update product info on cron. This will synchronize product information both on Drupal and Zen Cart by running cron command on linux/unix. Checking Redirect Product Info Pages will automatically redirect visitors from the Zen Cart product info pages to equivalent Drupal nodes. Similarly, checking Redirect Category Listing Pages will automatically redirect visitors from the Zen Cart category pages to equivalent Drupal nodes.
   5. The Zen Cart Users section allows you to configure single sign-on options for Drupal and Zen Cart. If you want to allow Zen Cart existing customers to login to Drupal, then check the Allow Zen Cart Customers to login to Drupal checkbox. On the other hand, if you want to allow Drupal users to login to Zen Cart as customers, check Allow Drupal Users Customers to login to Zen Cart as Customers. Checking Allow Single Sign-On will allow users to login once and access both Drupal and Zen Cart.

The Zencart Integration screen has the following sections:

Once you have configured these options, click the Save configuration button, or revert to defaults by clicking the Reset to defaults button.

5. Create Content Type in Drupal for Zen Cart categories and products: If you have ever used Drupal, you know how to create content types in Drupal. You can add new content type from Administer | Content Management | Content types | Add content type. Now you will get a Zen Cart Catalog group. From this section you can define whether this type will be used as a Zen Cart product or category. You can also configure node hierarchy-ability to be parent or child (default is parent). In the Identification section, type a human readable name, for example Zen Cart Product, in the Name field. Then type a machine readable name of this content type, for example zc_product, in the Type field. Provide a description of this content type in the Description field.In the Submission Form section, provide a label for the title and body field, minimum number of words, and explanation or submission guidelines. Configure default options in the Workflow section. Finally, click the Save content type button.Create two content types?one for the Zen Cart category and another for the Zen Cart product.
6. Add Category and Product in Drupal: You can create categories and products from Create Content section. In the list, click on Zen Cart Category. This will open Submit Zen Cart Category form. In this form, type the category name in Title field, type a description of this category in Body field. In the Node Hierarchy section, you can select a parent category. Check Category is Active to make this category visible. Configure other options like Menu settings, URL path settings, Publishing options, and so on and click the Submit button to create the categorySimilarly, you can create Zen Cart products by clicking on the Zen Cart Product content type. This will display the Submit Zen Cart Product form.

   Fill in the Submit Zen Cart Product form with appropriate information, such as product name, model, quantity in stock, tax class, base price, and so on. You can select its parent category in the Node Hierarchy section. Check the Create Menu option to make a menu item for this product. Configure other options like Menu settings, URL path settings, Publishing options, and so on and click the Submit button to create the product.

7. Test Zen Cart Integration to and from Drupal: Now it is time to test whether the Drupal-Zen Cart integration is working or not. First, go to your Zen Cart shop, for example, http://localhost/zc. There you will find the categories and products you have added. Click on any of these, and you will be redirected to the respective Drupal node. Again, in the Drupal, click on a product link, type a quantity and click the Add to Cart button. That will redirect you to the Zen Cart shop’s Your Shopping Cart Contents page.

Similarly you can test single sign-on features by signing in to either Drupal or Zen Cart and trying to purchase items from these two shops.

For more information, please visit:
http://www.PacktPub.com/zen-cart-ecommerce-application-development/book