README

Simple Symfony bundle that provides a Twig extension 'heroicon' to get all the Heroicons svg automatically. The bundle depends on the node package tailwindlabs/heroicons to get the svg icons.

1. Installation

2. Usage

3. Configuration

   a. Default Configuration

   b. Webpack Configuration

Installation

First, start by installing the package via composer:

composer require yalit/twig-heroicon-bundle

Then, enable the bundle in your config/bundles.php file:

// config/bundles.php
<?php 

return [
    // ...
    Yalit\TwigHeroiconBundle\TwigHeroiconBundle::class => ['all' => true],
];

Then, install the node package tailwindlabs/heroicons using your favorite package manager (here shown using npm):

npm install taiwindlabs/heroicons

Usage

The usage is simple, you can use the heroicon function in your twig templates to get the svg icons. The function has the following signature:

{{ heroicon('name', 'type', 'size', 'classname') }}

where:

• name is a string and the name of the icon (required)
• type is a string and the type of the icon (optional) => the possible values are 'outline' and 'solid' (see https://heroicons.com/)
• size is a string and the size of the icon (optional) => the possible values are '24', '20', '16' (see https://heroicons.com/)
  • !! for the sizes 16 and 20, the icons are only availabe in the 'solid type' (see https://heroicons.com/)
• classname is a string and the class name of the icon (optional and default is no specific class)

Here is an example of how to use the function:

{{ heroicon('academic-cap', 'solid', '20', 'text-red-500') }}

Configuration

Default Configuration

The bundle can be configured to change:

• the default display type of the icons
  • this value is used if no type is provided in the heroicon function
  • the possible values are 'outline' and 'solid'
• the default size of the icons
  • this value is used if no size is provided in the heroicon function
  • the possible values are '24', '20', '16' (see above for the possible combination with the types)
• the webpack configuration
  • if you want to use the webpack build to get the icons from the build folder
  • the build folder is by default 'public/build'

Here is the default configuration of the bundle:

twig_heroicon:
    default_display_type: 'outline'
    default_size: '24'
    webpack:
      enabled: false
      build_dir: 'public/build'

Webpack Configuration

The default configuration source the svg icons directly from the node_modules/heroicons folder needing to keep that folder in the project. If you want to use only the needed icons and get them from the webpack build, you can change the source to 'webpack' and add the following configuration:

twig_heroicon:
    source: 'webpack'

Then, you need to add the following configuration in your webpack.config.js file:

const TwigHeroiconPlugin = require("./vendor/yalit/twig-heroicon-bundle/assets/twigHeroiconPlugin");

Encore
    // ...
    .addPlugin(new TwigHeroiconPlugin())

This configuration will copy the needed svg icons from the node_modules/heroicons folder to the public/build folder and the Twig extension will then fetch the icons from there.

Webpack plugin options

This plugin by default will (during the build) look at the templates folder to all the twig files and get all the needed icons used in the heroicon function.
It can also get a list of specific icons from the node_modules/heroicons folder.

The following options can be passed to the plugin and here is the default configuration:

 {
    templatePaths: ["templates"], 
    defaultSize: "24", 
    defaultDisplayType: "outline",
    importType: 'twig', 
    importedHeroicons: [] 
}

where:

• templatePaths is an array of strings and the paths of the root folders of the templates to look for twig files
  • the default value is ["templates"]
• defaultSize is a string and the default size of the icons => if no size is provided in the heroicon function, then this will be the size of the icon fetched
  • the possible values are '24', '20', '16' (see above for the possible combination with the types)
• defaultDisplayType is a string and the default display type of the icons => if no type is provided in the heroicon function, then this will be the display type of the icon fetched
  • the possible values are 'outline' and 'solid'
• importType is a string and the type of the import
  • 'twig' will only look at the twig files located in the folders mentioned in the templatesPaths array
  • 'specific' will only look at the importedHeroicons array to fetch the icons
  • 'both' will combine the two above
• importedHeroicons is an array of strings or objects
  • if the importType is 'specific', then this array will be used to fetch the icons
  • if it's a string it must be a valid icon name and the defaultSize and defaultDisplayType will be used
  • if it's an object, then it must have the following properties:
    • name is a string and the name of the icon (required)
    • displayType is a string and the type of the icon (required) => the possible values are 'outline' and 'solid' (see https://heroicons.com/)
    • size is a string and the size of the icon (required) => the possible values are '24', '20', '16' (see https://heroicons.com/)

These options can be passed to the plugin in the addPlugin function like this:

.addPlugin(new TwigHeroiconPlugin({
    importType: 'both',
    importedHeroicons: [
        {name: 'academic-cap', displayType: 'solid', size: '20'},
        'adjustments-vertical',
    ]    
}))

**Note¨¨: if you change the build dir in the webpack configuration, you need to change the build_dir in the bundle webpack configuration to the same value (see above.

Note : if the webpack configuration is used, you can install the tailwindlabs/heroicons package as a dev dependency:

npm install taiwindlabs/heroicons --save-dev