The next file we'll look at, is sidebar.php.

Which gets called by the function get underscore sidebar.

It's most common in sidebars to display widget information.

When you display widgets in a theme,

you could also display backup information to show up, if those widgets are not set.

Which is what we're doing in this case.

It is also common to hard code information into the side bar,

that you don't need to provide the user ability to access or edit.

Remember though, the more you hard code in,

the more you'll have to change yourself, and someone cannot do from the admin area.

One place where you may have to make this distinction is,

whether it's best to use a plugin or a widget, or, hard code some widget or

feature that you need featured in the sidebar,

outside of the WordPress admin area, and just directly in this template.

One thing that's important to know about sidebar,

is that you could call it a couple different ways,

similar to the way you would use a get template part function.

If we look in our frontpage.php file,

which we'll get to a bit later, we can see the call get sidebar.

This will load sidebar.php.

However, if we come into our home.php file,

and we scroll down, we can see, Get Sidebar Blog.

This is telling it to find a file called sidebar-blog.php.

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This shows off WordPress' ability to use the get Sidebar function with

a parameter to have custom named or additional sidebar files.

The same is also true for headers and

footers, although they're less commonly used in that way.

Because we have the side bar set up,

and the appropriate code in our functions.php file.

Then, on the backend of our site, we can manage our widgets.

And have them displayed differently depending on what page or

what site we're on.

So, we can come in to here to edit our widgets, and

control what's displaying in the main sidebar versus just in the blog sidebar.