flex-template-web/docs/static-pages.md
2018-05-04 17:04:41 +03:00

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# Static pages
If you want to create simple pages that just show static content without need for data fetches, you
can create a static page.
Steps for creating a static page:
1. [Create a new folder under `src/containers/`](#1-creating-a-new-folder)
2. [Create a new JavaScript file using the same name.](#2-creating-a-javascript-file)
3. [Create a new CSS file using the same name.](#3-creating-a-css-file)
4. [Write the content to a JavaScript file (i.e. AboutPage.js in our example).](#4-creating-the-component)
5. [Write the style rules to CSS file (i.e. AboutPage.css in our example).](#5-adding-some-styles-to-the-css-file)
6. [Add the newly created page component to `src/containers/index.js`](#6-adding-the-component-to-the-component-directory)
7. [Add the newly created page to `src/routeConfiguration.js`](#7-adding-a-route-to-the-page)
## 1. Creating a new folder
Create a new folder under `src/containers/` with the name of your static page. E.g. "about" page
should be named as `AboutPage`.
## 2. Creating a JavaScript file
Create a new JavaScript file using the folder name. The path should look like
`src/containers/AboutPage/AboutPage.js`.
## 3. Creating a CSS file
Create a new CSS file using the folder name. The path should look like
`src/containers/AboutPage/AboutPage.css`.
## 4. Creating the component
Template for a single column static page (AboutPage.js): (We'll go through this line-by-line below.)
```jsx
import React from 'react';
import { StaticPage, TopbarContainer } from '../../containers';
import {
LayoutSingleColumn,
LayoutWrapperTopbar,
LayoutWrapperMain,
LayoutWrapperFooter,
Footer,
NamedLink,
ExternalLink,
} from '../../components';
import css from './AboutPage.css';
import image from './path/to/image.png';
const AboutPage = () => {
return (
<StaticPage
className={css.root}
title="About"
schema={{
'@context': 'http://schema.org',
'@type': 'AboutPage',
description: 'Description of this page',
name: 'About page',
}}
>
<LayoutSingleColumn>
<LayoutWrapperTopbar>
<TopbarContainer />
</LayoutWrapperTopbar>
<LayoutWrapperMain>
<h1>Some content</h1>
<img src={image} alt="My first ice cream." />
<div>
<NamedLink name="LandingPage">Go to home page</NamedLink> or
<ExternalLink href="https://google.com">Go to Google</ExternalLink>
</div>
</LayoutWrapperMain>
<LayoutWrapperFooter>
<Footer />
</LayoutWrapperFooter>
</LayoutSingleColumn>
</StaticPage>
);
};
export default AboutPage;
```
We are using [React](https://reactjs.org/) and [JSX](https://reactjs.org/docs/introducing-jsx.html)
to create components and pages. Therefore, we need to import React to our new component which is
done in the first line.
```jsx
import React from 'react';
```
In the second line we are importing two containers:
* `StaticPage`: helps in creating static pages
* `TopbarContainer`: creates our Topbar component and fetches the data it needs.
```jsx
import { StaticPage, TopbarContainer } from '../../containers';
```
After that we need to import some components:
* `LayoutSingleColumn` and wrappers that it needs to position content
* `Footer` component (to be added inside LayoutWrapperFooter)
* `NamedLink` makes it easier to point to different pages inside the application
* `ExternalLink` can be used to link outside the application. It creates a normal `<a>`link with
extra attributes `target="_blank" rel="noopener noreferrer"` that add some security to these
outbound links.
`LayoutSingleColumn` (and other layouts like LayoutSideNavigation) need to understand what the
content is about. Therefore, different parts of the page need to be wrapped with specific
components - in this case: `LayoutWrapperTopbar`, `LayoutWrapperMain`, and `LayoutWrapperFooter`.
```jsx
import {
LayoutSingleColumn,
LayoutWrapperTopbar,
LayoutWrapperMain,
LayoutWrapperFooter,
Footer,
NamedLink,
ExternalLink,
} from '../../components';
```
Then we need to import styles and possible other files from current folder. With CSS we are using
[CSS Modules](https://github.com/css-modules/css-modules) to tackle possible classhes of different
class names. [Read more.](#5-creating-the-css-file)
```jsx
import css from './AboutPage.css';
```
Then we also import an image which is used later (`<img src={image} alt="My first ice cream." />`).
```jsx
import image from './path/to/image.png';
```
Then after all the imports we are finally getting into phase were we define the component.
`const AboutPage = props => { return <div></div>}` defines a component called AboutPage with content
defined in return part. This is a
[functional component](https://reactjs.org/docs/components-and-props.html).
In the template above we are using StaticPage component with some attributes:
```jsx
<StaticPage
className={css.root}
title="About"
schema={{
"@context": "http://schema.org",
"@type": "AboutPage",
"description": "Description of this page",
"name": "About page",
}}
>
```
* `className` is JSX name for `class` attribute used in plain HTML.
* `title="About"` creates `<title>About</title>` element to `<head>` section of the page. (That
title is also used in OpenGraph meta tags). You could also add
`description="This is about page description"`
* Then we have `schema` tag that defines some data for search engines in JSON-LD format. Check
[schema.org](http://schema.org/docs/full.html) for more information.
Inside `StaticPage` component we define layout (`LayoutSingleColumn`) and add other components
inside semantic content wrappers so that the layout is able to understand where to render those
blocks.
```jsx
<LayoutSingleColumn>
<LayoutWrapperTopbar>
<TopbarContainer />
</LayoutWrapperTopbar>
<LayoutWrapperMain>
<h1>Some content</h1>
<img src={image} alt="My first ice cream." />
<div>
<NamedLink name="LandingPage">Go to home page</NamedLink> or
<ExternalLink href="https://google.com">Go to Google</ExternalLink>
</div>
</LayoutWrapperMain>
<LayoutWrapperFooter>
<Footer />
</LayoutWrapperFooter>
</LayoutSingleColumn>
```
And as a final step we need to export the component. `export default AboutPage;`. See more from
[babeljs.org](https://babeljs.io/learn-es2015/#ecmascript-2015-features-modules)
## 5. Adding some styles to the CSS file
Here's an example what your AboutPage.css file could look like:
```css
@import '../../marketplace.css';
.root {
padding: 24px;
/* Use CSS variable imported from marketplace.css */
background-color: var(--marketplaceColor);
}
```
## 6. Adding the component to the component directory
New component needs to be added to `src/containers/index.js` file or if it's a presentational
component (not page or form) it should be inside components folder and therefore added to
`src/components/index.js`
Inside that index.js you need to add line
`export { default as AboutPage } from './AboutPage/AboutPage';`. This helps other parts of the app
to import new components easily with `import { AboutPage } from '../../components'`.
## 7. Adding a route to the page
As a last step you need to add the newly created static page to the routing. This can be done in
`src/routeConfiguration.js`.
Inside routeConfiguration function you should add a URL path, a page name (it should not conflicting
with other pages), and the component itself.
Add it as first to the list of imported pages in alphabetical order (2nd line):
```jsx
import {
AboutPage,
AuthenticationPage,
CheckoutPage,
```
and after that add the route configuration to your newly created page: (In this example we created
about page so '/about' would work well as a path.)
```javascript
{
path: '/about',
name: 'AboutPage',
component: AboutPage,
},
```
## Read more
We are using several libraries in this example. If you want to read more, here's some pointers:
* [ES2015](https://babeljs.io/learn-es2015/): imports, exports, arrow functions
* [React](https://reactjs.org/): for creating components
* [JSX](https://reactjs.org/docs/introducing-jsx.html): for getting HTML-like markup syntax for own
components
* [CSS Modules](https://github.com/css-modules/css-modules)
* [React Router](https://reacttraining.com/react-router/web/guides/philosophy): routing inside the
application.