Extension:Cargo/Quick start guide/zh

假设你想创建一个展示你家里所有藏书的wiki. 你希望你的wiki中有两种类型的页面：书，以及作者. 每个书的页面都应包含书名，作者，类型，出版年份，以及总页数. 每个作者页面应该包含作者的名字，国籍，以及你所收藏的他的作品列表.

创建模板
你所要做的最主要的事情是创建两个模板，一个是书，另一个是作者. If you have the Page Forms extension installed, you can use either of its helper pages Special:CreateTemplate or Special:CreateClass to create these templates. And if you also have the Page Schemas extension of version 0.4.5 or later installed, you can use its standard "create/edit schema" to create and re-create Cargo-based templates.

However, you can also manually create these templates. Here is what the two templates might look like:

Template:Book This is the "Book" template.

Template:Author This is the "Author" template.

That is all you need to do to have infobox-style templates that both define a data structure and store their data in an easily-queried way.

You can see in this template examples of calls to the three main parser functions of Cargo: #cargo_declare, #cargo_store and #cargo_query; and hopefully how the three interact together. Note especially the placement of #cargo_declare and #cargo_store: the former in the &lt;noinclude&gt; tag, the latter in the &lt;includeonly&gt; tag.

A few other notes on these templates:
 * For both templates, the name of the entity, i.e the name of the book or author, is not stored in the template. That is because the name of the page itself will hold the name of that book or author -- and will also be stored in those two tables, in a field named "_pageName".
 * The "Author" template contains, at the end, what is known as an aggregating query, that queries the "Books" table (defined by the other template) and gets the names of all the pages that have the current page among its values for the "Authors" field. (It will then, by default, display that information in a comma-separated list.) This is a very common type of query; it means that you don't need to store the same data in two different pages, because one page can simply query the data.
 * There is one line of this sample code that requires another extension to work: the line in Template:Book which includes calls to both #arraymap and #formredlink, both of which are defined by the Page Forms extension. This line does a rather complex operation: it separates the value of " " into one or more sub-values (splitting by comma), then, for each value, either links directly to that page, if a page with that name already exists; or links to the form for creating that page, using the form definition at "Form:Author". Thus, this template presupposes not only that the Page Forms extension is installed, but that an "Author" form has been created. If you don't have Page Forms installed, you could replace that line with something a lot simpler, like:
 * However, Page Forms is strongly recommended for any wiki that uses Cargo.

创建Cargo表
Once the templates are created, there's only one more simple step, which is to create the Cargo database tables for each template. This is not done automatically when the template is saved. Instead, there are two options:
 * For each template, go that template's page, select the "Create data table" tab option (or append  to the URL), then click the "OK" button.
 * From the command line, go to Cargo's  directory and run " ".

After doing either of these, a table will be created holding the data for each relevant template; and you will be able to see that table's contents at any time by clicking the "View table" link on the template's page.