What exactly is Astro? An introduction to the Popular Static Site Generator - (r)

Jun 17, 2023
Get familiar with Astro.js static site generator and how it works

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This is where Astro can be seen as one of the most cool kids inside the JavaScript framework block.

The Astro framework was invented by Fred K. Schott and numerous other contributors. Astro has quickly become a well-known framework within the web-based developers. It's a framework for all kinds of applications that functions somewhat as a static page generator.

In this article, we'll discuss the reasons most developers like Astro and choose Astro over alternative solutions. We'll also walk you through how to set up a blog using markdown and the Astro framework.

What is Astro?

The Astro logo in black, showing "astro" in lowercase letters preceded by a stylized capital "A" with a small flame beneath it.
Astro

Despite its compact dimensions, Astro comes with powerful tools that dramatically increase your site's flexibility and speed, which allows users to work less dealing with your website's theme as well as content. Furthermore, Astro gives users the choice of working with the frameworks they prefer using Astro that is an excellent alternative for those who are familiar with programming and have a variety of favorite frameworks.

Here are some ways Astro stands out from the group of competitors.

  • Island Architecture: Astro separates the interface for your users (UI) into smaller and separate parts, referred to "Astro Islands" which are able to be utilized in any website. In the absence of JavaScript can be replaced with light HTML.
  • zero JavaScript (by standard): While you can use all JavaScript you'd like to create websites, Astro will attempt to make use of none of the JavaScript in the production process through transcription of the code. This is an excellent alternative if you're focusing on speed of your site.

Furthermore, Astro is edge-ready, that means that it's able to deploy in any location and at any moment and without any issues.

Are you ready to know more? Let's look at how Astro works.

Astro's Structure

Before we proceed, it is important to be aware of the way Astro is configured in order to make sure you can utilize the program correctly. We'll look over Astro's fundamental document structure.

+-- dist/ +-- src/ | +-- components/ | +-- layouts/ | +-- pages/ | +-- index.astro +-- public/ +-- package.json

You can see that the foundational structure is easy to understand. There are however some important points that you must keep in your mind

  • A majority of our work are within the the SRC folder. Layouts, components and pages are located in subfolders. There is the option of adding additional folders that will make it easier for you to manage.
  • The free directory is used for documents that do not belong to the process of building like images, fonts, and even a robots.txt file.
  • The folder is known as"the dist" folder will hold all your content that you wish to transfer to your server for production.

The next step is to explore the most crucial components of Astro: page layouts and designs.

Components

This is an example of how is an ordinary component looks like (in this case it is a classified tag, also known as a division tag. It contains an H2:

Hello, !

This is the way we could incorporate this feature on the website we have:

 import Component from ../components/.astro -- Then, import the component from../components/.astro 

In the example above, it is the first step in adding the component. Only then it will be made available on the website.

The next step is adding specific properties to the component. The first step is to add a the title property:

--- const title = 'Hello' = Astro.props --- title 

The way in which our property could be incorporated:

 import component from ../components/.astro" This displays "Hello" --> 

Simple, right?

It's likely that you've realized that the power behind Astro's elements is due to their multi-faceted, flexible and adaptable nature. They enable you to change the layout and design of your website's appearance by editing only one or two pages of code. They can help you save time which would spend on tedious and laborious replacements of the text.

Layouts

We will discuss layouts. In addition to their primary function of thematics, layouts within Astro can be reused and used as code wrappers.

Look at the following example:

--- // src/layouts/Base.astro const pageTitle = 'Hello world' = Astro.props --- pageTitle 

Pay attention to the tag. Here's the tag. Astro's component Astro acts as placeholders for HTML tags and other content.

Let's see what happens.

The below code will show the tag that we have changed into new tag. All of it is enclosed around an Base.astro layout:

--- import Base from '../layouts/Base.astro'; --- Some example text.

The HTML in the tags we used were substituted by the HTML it symbolizes.

Some example text.

The layouts are similar to components and let you reuse parts of code throughout your site, making it easier to handle the stress of redesigning your site's overall look and contents.

Pages

Pages are a specific kind of part that is responsible to manage information flow including loading, and the creating templates.

Astro uses file-based routing to produce pages rather than dynamic routing. This is not only a way to make file-based routing use lesser bandwidth, it can also eliminate the necessity of loading your components manually.

Here's a good example of clearly stated and well-defined methods:

src/pages/index.astro => yourdomain.com src/pages/test.astro => domain.com/test src/pages/test/subpage => domain.com/test/subpage

If we take these routes and reach the finish the homepage will appear according to the following format:

 Hello World Hello, 

But, we're conscious of the way layouts function, so lets make this design work universally easily accessible

--- import Base from '../layouts/Base.astro'; --- Hello, 

That's a lot cleaner.

The topic will be covered in detail on ways to integrate Astro as well as in more detail within this post, but for now, let's concentrate on the aspects that make it fun, such as website design and personalization.

Expanding and Customizing Astro

Learn how to personalize your Astro site! We'll use Markdown collections, routing and collection and images processing, and connections to React to create and personalize our site.

Markdown Collections

In version 2.0, Astro introduced an enhanced method of managing Markdown content. It is also compared to before. Through collections, we are certain that our entire frontmatter data is included and is connected to the proper type of connection.

In the last few months, with the version 2.5 the developers added the capability to manage JSON and YAML files in collections.

Are you prepared to do some dirt work?

First, put all your Markdown articles in the src/content/collection_name folder. It is the goal to make blogs for this specific project. In our instance, our folder is the content/src/blog folder..

Now it's time to define all the required frontmatter fields in our src/content/config.ts file. The blog we're building requires the following fields:

  • title (string)
  • tags (array)
  • date of publication (time)
  • Image (string and optional)

What appears when assembled:

import z, defineCollection from 'astro:content'; const blogCollection = defineCollection( schema: z.object( title: z.string(), tags: z.array(z.string()), image: z.string().optional(), publishDate: z.date(), ), ); export const collections = 'blog': blogCollection, ;

And this is what our article-about-astro.md Markdown file contains:

--- title: Article about Astro tags: [tag1, tag3] publishDate: 2023-03-01 --- ## Tamen risit Lorem *markdownum flumina*, laceraret quodcumque Pachyne, **alter** enim cadavera choro.

It's not a unique feature of the Markdown document. There's however a secret capability that's revealed should we make a mistake spelling the spelling of a word.

For instance, if we typed publishDate, we made a mistake. we accidentally entered publishData. In the case of an error like this, Astro will throw an error message like:

blog - article-about-astro.md frontmatter does not match collection schema. "publishDate" is mandatory.

Amazing, right? This helpful feature can assist us to spot any error which are caused by frontmatter within the space of few seconds.

The final thing to create is a web page that showcases our data. Let's create a file at src/page/blog/[slug].astro with the following code:

--- import Base from '../../layouts/Base.astro'; import getCollection from 'astro:content'; export async function getStaticPaths() const blogEntries = await getCollection('blog'); return blogEntries.map(entry => ( params: slug: entry.slug , props: entry , )); const entry = Astro.props; const Content = await entry.render(); --- entry.data.title 

By using SearchStaticPaths, Astro will create each static page that is associated with every blog article.

One thing that's missing currently is a comprehensive list of all our content:

--- import Base from '../../layouts/Base.astro'; import getCollection from 'astro:content'; const blogEntries = await getCollection('blog'); --- blogEntries.map(item => item.data.title ) 

There is no doubt that making using collections can make this procedure very easy.

Now, let's create the database type collection. First, we must open the src/content/config.ts file again and add a new data collection:

import z, defineCollection, referenece from 'astro:content'; const blogCollection = defineCollection( type: 'content', schema: z.object( title: z.string(), tags: z.array(z.string()), image: z.string().optional(), publishDate: z.date(), author: reference('authors') ), ); const authorsCollection = defineCollection( type: 'data', schema: z.object( fullName: z.string(), country: z.string() ), ); export const collections = 'blog': blogCollection, 'authors': authorsCollection, ;

Along with the creation of a fresh collection we have also added a writer reference within the blogCollection.

The time has come to be an entire new author. We must create a file called maciek-palmowski.json in the content/authors.json:

 "fullName": "Maciek Palmowski", "country": "Poland" 

The next step is to gather all the information needed for the design to our Post. To do this, we'll need to utilize the obtainEntry method.:

--- import Base from '../../layouts/Base.astro'; import getCollection, getEntry from 'astro:content'; export async function getStaticPaths() const blogEntries = await getCollection('blog'); return blogEntries.map(entry => ( params: slug: entry.slug , props: entry , )); const entry = Astro.props; const author = await getEntry(entry.data.author); const Content = await entry.render(); --- entry.data.title Author: author.data.fullName 

Routing

Astro is a web-based application that has two routes. We've discussed the static (file-based) route using file-based data in our prior review of the Astro's pages.

In the coming weeks, we'll shift our attention to dynamic routing.

By using dynamic route parameters, it is possible to control the Astro page file to complete the process of generating multiple pages using the same layout. This can be useful when you have a lot of a specific kind of page (think the bio of the author and user profile and other documents. ).

In the second instance, we'll work on the creating bio pages of those authors with whom we'll collaborate.

In Astro's static output modes, the pages are generated during the build phase. That means you need to determine the author who will receive the appropriate file. When you go to dynamic mode, contrary, the pages are produced on the basis of requests from all the ways that are compatible.

If you'd like associate the name of a variable to a filename, put brackets around it:

pages/blog/[slug].astro -> blog/test, blog/about-me 

Let's get deeper into this by using the code in our blog/src/src/src/slug/src file:

--- import Base from '../../layouts/Base.astro'; import getCollection from 'astro:content'; export async function getStaticPaths() const blogEntries = await getCollection('blog'); return blogEntries.map(entry => ( params: slug: entry.slug , props: entry , )); const entry = Astro.props; const Content = await entry.render(); --- entry.data.title 

This getStaticPaths path is the principal one in charge of designing every static page. This route will return two objects.

  • Params : These are helpful to fill within the brackets of our URLs
  • props : We're sending the values to the web page

After that, the creation of the webpage will be taken care of.

Image Handling

It's good to know Astro is able to help you in this area, too. By using Astro's @astrojs/image application, we're able to show all the above information in a couple of seconds.

Following installing the application following installation, it gives access to two elements: Image and Image.

Image component aids in creating an image. Image component can be used in making an image that has been optimised.

label. This is an illustration of:

--- import Image from '@astrojs/image/components'; import heroImage from '../assets/hero.png'; --- 

The same is it is the reality that the picture component is an enhanced component.

--- import Picture from '@astrojs/image/components'; import hero from '../assets/hero.png'; --- 

SSG against SSR

The default configuration of Astro is running as a static website generator. That means all web pages are transformed into static HTML pages.

This is an excellent method for a number of reasons (especially the speed angle) However, there are instances when we'd prefer a faster approach. If you want a distinct personal profile page for each of your customers, such as in the case of many thousands of blog posts you post on your website, then re-rendering every single time could be a bit too much.

Luckily, Astro also can work using a totally server-side-generated model as well as an alternate mode between both.

In order to enable SSR side-wide, enabled, it is required to add this code in astro.config.mjs:

import defineConfig from "astro/config"; export the default defineConfig(output:"server");

It is most likely to be the most used technique.

The method is a hybrid one, meaning that by default each page is dynamically created, separate from pages with exported const export prerender = true in addition to pages where the export const prerender = true.

With Astro 2.5 Astro 2.5 provides the choice to choose static rendering by default. You can also select dynamic routes on your own.

These tools enable us to create websites, like those which are generated statically using user profiles and logins who are pages that have been created dynamically. Neat, right?

Further information on this subject is in the official document.

Integration of other JavaScript frameworks

One of the most impressive attributes that are distinctive that is unique to Astro lets you integrate the platform you prefer and utilize it in concert with Astro. It is possible to mix Astro along with React, Preact, Svelte, Vue, Solid, or Alpine (for any integration, you should consult Astro's "Add Integrations" documentation).

npx astro add react

The good news is it's obvious that React is fully integrated. It is now it's very own React component. In our case, it will be the counter component at src/components/ReactCounter.tsx:

import useState using'react A counter that was created by using React's */export function Counter(children) SetCount Const[count]useState(0) = useState(0);const add = () = setCount((i) = i + 1.) Const subtract = () = setCount((i) + 1)) (i) Return ( setCount = () Return ( > count count + + children >);

Last but certainly not least, we need to place the counters of our website by using the following code:

--- import * as react from '../components/ReactCounter'; --- 

And voila: Your React component has been fully embedded into your site.

How To Deploy Astro Using

Make an GitHub repository for your website's file data. If you're not quite prepared to make use of your personal information, you may want to take a copy of the Astro template to your website created by the team at our.

A portion of the GitHub repo for 's Astro starter site, showing an image of the white Astro
GitHub repo for Astro Template for a starter website

Once your repo has been created, log in to My My. Select Applications to the left, then select the Application option from the green Select Service dropdown.

he My dashboard opened to the "Applications" section, which shows a purple "Add service" dropdown with two options: "Application" and "Database".
Add an application form to My

The last step is providing details of the build and the installation.

The majority of the options you'll get, like Name of process as well as the process of payment tend to provide simple or straightforward solutions. Note that you may choose to not leave the starting command field blank should you wish to leave it blank and the system will present the command npm as an alternative.

After you've completed filling the information for your building click at the Confirm payment method button to initialize your build.

Simple! it! It's now a functioning, functioning static site built using Astro. Astro framework.

A dark page with the  logo in white in the center above the words "Welcome to Your New Astro Site", followed by two rows of cards with labels "Official Astro Website", "Astro Documentation", "Download Starter", and " GitHub".
Our live Astro homepage

Find the live URL of your account as plus additional details about the deployment within the category "Deployments" inside Your Account.

The "Deployments" screen of My showing the details and history of our Astro site deployment.
A successful Astro deployment

Summary

Astro's simple structure, clear syntax, and the universal components make creating and managing the application an easy task. Its lightweight appearance and mixture of static and dynamic routing dramatically improve the efficiency of your site and its capability to be integrated alongside other JavaScript frameworks make it even better suited to developers with experience.

If you're looking to create engaging websites that are quick to load, provides flexibility, and allows both static and dynamic design, then Astro may be a good choice for you.

What do you think about what do you think of Astro static site generator? Have you used it for a project that you developed? Please let us know by leaving remarks below.

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