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Most product catalogs, whether online, or in paper, are broken into categories. A department Store catalog will have, for example, a category for lawn and garden, and another one for housewares, and so on. Drupal Commerce lets you organize your products into categories as well, but first you have to decide what those categories are. This video shows you how. The controls for such categories are under Structure, and Taxonomy, and here I should explain exactly the way Drupal works. The whole system is called its taxonomy.
A taxonomy is divided into vocabularies, and each vocabulary is a different class of category. For example, let's say that you're selling shirts. You might have one vocabulary for size, and another for color. Within each vocabulary are terms that say what the thing actually is. So the size vocabulary would have the terms small, medium, and large, and the color vocabulary would have red, and black, and white, and so on. So first, we are going to have to add a vocabulary. I am going to call this one Category, and we don't actually have to put in a description.
There; it's that easy. Now we will add our terms to that category. To do that, go over and click add terms, next to Category. The first one I will add is Edible oils, which fits the product that we already added to our site, so Edible oils. You can add a description, and I'll do that right now. Let's say, A centerpiece of good eating, and then a URL alias. I'll add one here, and you will understand what it does when I'm done with the video. I'll just make it edible-oils, and Save.
You'll notice that after you've added a term, you're asked to add another one. That just follows the way that people usually work. They'll usually start adding term after term, which is very convenient I think, so I will actually add Cosmetics with its own URL alias, and save. And finally, Apparel, and save. Now, we have set up our categories, but they don't actually show up anywhere until we link them to our product display nodes.
So to do that, I go up to Structure, and Content types, and edit the product display content type. I will go into manage fields. In order to connect the categories to product display nodes, I am going to add a field here. I will say, Type of product, and here I will just call it type_of_product. If you have any problems with this screen, or setting up content types, or managing fields, take a look at my Drupal Essential Training Course, which goes into this in a lot more detail.
For field type we select Term reference. That refers back to, as I say, those terms within the vocabulary, and I'll leave it as Select list, and save. We then choose what vocabulary we want it to be connected to, in this case, Category, which we just created. Save, and then we have a whole bunch of other settings that we could use. I'm just going to leave it as it is, and save. Now let's go back to our Content. We have this right here; we could click it, and edit it, but I also want to show you how you can see a list of all of your product display nodes.
You go up to Content and click, and if you had more than one, it would show up in this list. To edit it, you just go and click edit. That takes us back to the same place as if we'd clicked edit in that other screen. As we scroll down, we now see this extra field: Type of product. It's an edible oil, so I will add that, and save. If I go back to look at it, we see we now have Type of product, Edible oils, and that actually shows up as a link. You will see what that does after I add a few more products.
Now remember, adding products is a two-step process. We first add the product, and then the product display. If you're a premium subscriber on lynda .com, or if you receive this course on the disk, you can use the text and graphics in the exercise files, as I'm going to do. If not, or you're building your own store, of course, you can use any content you like. Rather than show you the whole process of adding products, and product display nodes, I am going to go ahead and add them myself, and we will come back when we're done. There; we now have three products in our site.
We have our original olive oil here at the bottom; we also have some Lemon- flavored olive oil, and also Lip balm. Now, if we click on one of these two edible oils, we see that link I showed you before, Edible oils, and if you click on that link now, you'll see that it takes you to a page that shows you all of the edible oils on our site. If I were to go back to the front page and click on Lip balm, it's in the Cosmetics group, and of course, there's only one in the site, but if there were more, it would show up here.
You'll also notice that our URL says cosmetics up here. Once again, that's good not only for people who are visiting the site, but also for search engines. So that's as an introduction to categories, and remember, we did that all through the Taxonomy page under Structure, and Taxonomy. There is a lot more to Categories, we didn't go into, such as creating subcategories. I do have a recommendation though: plan your taxonomy well from the beginning, and then keep tabs on it as you add products. It's easy to change direction in midstream, and forget to re-categorize things, but a store that's well organized, with thoughtful categories, is a cinch to manage, and a joy to shop.
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