zola/docs/content/documentation/getting-started/overview.md
2023-04-02 22:40:33 +02:00

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title = "Overview"
weight = 5
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## Zola at a Glance
Zola is a static site generator (SSG), similar to [Hugo](https://gohugo.io/), [Pelican](https://blog.getpelican.com/), and [Jekyll](https://jekyllrb.com/) (for a comprehensive list of SSGs, please see [Jamstack](https://jamstack.org/generators)). It is written in [Rust](https://www.rust-lang.org/) and uses the [Tera](https://tera.netlify.com/) template engine, which is similar to [Jinja2](https://jinja.palletsprojects.com/en/2.10.x/), [Django templates](https://docs.djangoproject.com/en/2.2/topics/templates/), [Liquid](https://shopify.github.io/liquid/), and [Twig](https://twig.symfony.com/).
Content is written in [CommonMark](https://commonmark.org/), a strongly defined, highly compatible specification of [Markdown](https://www.markdownguide.org/). Zola uses [pulldown-cmark](https://github.com/raphlinus/pulldown-cmark#pulldown-cmark) to parse markdown files. The goal of this library is 100% compliance with the CommonMark spec. It adds a few additional features such as parsing footnotes, Github flavored tables, Github flavored task lists and strikethrough.
SSGs use dynamic templates to transform content into static HTML pages. Static sites are thus very fast and require no databases, making them easy to host. A comparison between static and dynamic sites, such as WordPress, Drupal, and Django, can be found [here](https://dev.to/ashenmaster/static-vs-dynamic-sites-61f).
To get a taste of Zola, please see the quick overview below.
## First Steps with Zola
Unlike some SSGs, Zola makes no assumptions regarding the structure of your site. In this overview, we'll be making a simple blog site.
### Initialize Site
> This overview is based on Zola 0.17.1.
Please see the detailed [installation instructions for your platform](@/documentation/getting-started/installation.md). With Zola installed, let's initialize our site:
```bash
$ zola init myblog
```
You will be asked a few questions.
```
> What is the URL of your site? (https://example.com):
> Do you want to enable Sass compilation? [Y/n]:
> Do you want to enable syntax highlighting? [y/N]:
> Do you want to build a search index of the content? [y/N]:
```
For our blog, let's accept the default values (i.e., press Enter for each question). We now have a `myblog` directory with the following structure:
```bash
├── config.toml
├── content
├── sass
├── static
├── templates
└── themes
```
For reference, by the **end** of this overview, our `myblog` directory will have the following structure:
```
├── config.toml
├── content/
│ └── blog/
│ ├── _index.md
│ ├── first.md
│ └── second.md
├── sass/
├── static/
├── templates/
│ ├── base.html
│ ├── blog-page.html
│ ├── blog.html
│ └── index.html
└── themes/
```
Let's start the Zola development server within the newly created `myblog` directory:
```bash
$ cd myblog
$ zola serve
Building site...
Checking all internal links with anchors.
> Successfully checked 0 internal link(s) with anchors.
-> Creating 0 pages (0 orphan) and 0 sections
Done in 13ms.
Listening for changes in .../myblog/{config.toml,content,sass,static,templates}
Press Ctrl+C to stop
Web server is available at http://127.0.0.1:1111
```
If you point your web browser to <http://127.0.0.1:1111>, you should see a "Welcome to Zola" message.
### Home Page
Let's make a home page. To do this, let's first create a `base.html` file inside the `templates` directory. This step will make more sense as we move through this overview.
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>MyBlog</title>
</head>
<body>
<section class="section">
<div class="container">
{% block content %} {% endblock %}
</div>
</section>
</body>
</html>
```
Now, let's create an `index.html` file inside the `templates` directory.
```html
{% extends "base.html" %}
{% block content %}
<h1 class="title">
This is my blog made with Zola.
</h1>
{% endblock content %}
```
This tells Zola that `index.html` extends our `base.html` file and replaces the block called "content" with the text between the `{% block content %}` and `{% endblock content %}` tags.
### Content Directory
Now let's add some content. We'll start by making a `blog` subdirectory in the `content` directory and creating an `_index.md` file inside it. This file tells Zola that `blog` is a [section](@/documentation/content/section.md), which is how content is categorized in Zola.
```bash
├── content
│ └── blog
│ └── _index.md
```
In the `_index.md` file, we'll set the following variables in [TOML](https://github.com/toml-lang/toml) format:
```md
+++
title = "List of blog posts"
sort_by = "date"
template = "blog.html"
page_template = "blog-page.html"
+++
```
> Note that although no variables are mandatory, the opening and closing `+++` are required.
* *sort_by = "date"* tells Zola to use the date to order our section pages (more on pages below).
* *template = "blog.html"* tells Zola to use `blog.html` in the `templates` directory as the template for listing the Markdown files in this section.
* *page_template = "blog-page.html"* tells Zola to use `blog-page.html` in the `templates` directory as the template for individual Markdown files.
For a full list of section variables, please see the [section](@/documentation/content/section.md) documentation. We will use *title = "List of blog posts"* in a template (see below).
### Templates
Let's now create some more templates. In the `templates` directory, create a `blog.html` file with the following contents:
```html
{% extends "base.html" %}
{% block content %}
<h1 class="title">
{{ section.title }}
</h1>
<ul>
<!-- If you are using pagination, section.pages will be empty. You need to use the paginator object -->
{% for page in section.pages %}
<li><a href="{{ page.permalink | safe }}">{{ page.title }}</a></li>
{% endfor %}
</ul>
{% endblock content %}
```
As done by `index.html`, `blog.html` extends `base.html`, but this time we want to list the blog posts. The *title* we set in the `_index.md` file above is available to us as `{{ section.title }}`. In the list below the title, we loop through all the pages in our section (`blog` directory) and output the page title and URL using `{{ page.title }}` and `{{ page.permalink | safe }}`, respectively. We use the `| safe` filter because the permalink doesn't need to be HTML escaped (escaping would cause `/` to render as `&#x2F;`).
If you go to <http://127.0.0.1:1111/blog/>, you will see the section page for `blog`. The list is empty because we don't have any blog posts. Let's fix that now.
### Markdown Content
In the `blog` directory, create a file called `first.md` with the following contents:
```md
+++
title = "My first post"
date = 2019-11-27
+++
This is my first blog post.
```
The *title* and *date* will be available to us in the `blog-page.html` template as `{{ page.title }}` and `{{ page.date }}`, respectively. All text below the closing `+++` will be available to us as `{{ page.content }}`.
We now need to make the `blog-page.html` template. In the `templates` directory, create this file with the contents:
```html
{% extends "base.html" %}
{% block content %}
<h1 class="title">
{{ page.title }}
</h1>
<p class="subtitle"><strong>{{ page.date }}</strong></p>
{{ page.content | safe }}
{% endblock content %}
```
> Note the `| safe` filter for `{{ page.content }}`.
This should start to look familiar. If you now go back to our blog list page at <http://127.0.0.1:1111/blog/>, you should see our lonely post. Let's add another. In the `content/blog` directory, let's create the file `second.md` with the contents:
```md
+++
title = "My second post"
date = 2019-11-28
+++
This is my second blog post.
```
Back at <http://127.0.0.1:1111/blog/>, our second post shows up on top of the list because it's newer than the first post and we had set *sort_by = "date"* in our `_index.md` file. As a final step, let's modify our home page to link to our blog posts.
The `index.html` file inside the `templates` directory should be:
```html
{% extends "base.html" %}
{% block content %}
<h1 class="title">
This is my blog made with Zola.
</h1>
<p>Click <a href="{{/* get_url(path='@/blog/_index.md') */}}">here</a> to see my posts.</p>
{% endblock content %}
```
This has been a quick overview of Zola. You can now dive into the rest of the documentation.