php/js consts

gistfile1.txt

// This is the code in the script to generate the file...

    protected $signature = 'generate:constants';
    protected $description = 'Generate json files for constants';
    protected $outputFile = 'resources/js/plugins/constsPlugin.js';

    public function handle()
    {
        // clear any existing file
        if (is_file(base_path($this->outputFile))) {
            unlink(base_path($this->outputFile));
        }
        file_put_contents($this->outputFile, $this->getJSTemplate(Constants::toJson()));

        return 0;
    }

    private function getJSTemplate($constants)
    {
        return <<< EOT
 // This file is generated. DO NOT EDIT. Add/modify constants in the /app/Constants.php file instead.
const CONSTS = $constants;

CONSTS.install = function (Vue, options) {
  Vue.prototype.\$const = (key) => {
    return CONSTS[key];
  };
};

export default CONSTS;
EOT;
    }

// and this is the Constants class:

<?php

namespace App;

class Constants
{
    protected static $imports = [
        User::class,
        Activity::class,
    ];

    // Laravel models
    ...
    const TAG_MODEL = Tag::class;
    const USER_MODEL = User::class;

    // Page Type
    const PAGE_HOME = "home";
    const PAGE_LANDING = "landing";

    ...
    
    
    public static function toJson()
    {
        $constants = collect(self::getClassConstants(self::class));
        foreach (self::$imports as $class) {
            $constants = $constants->merge(self::getClassConstants($class));
        }
        return json_encode($constants, JSON_PRETTY_PRINT);
    }

    private static function getClassConstants($class)
    {
        $reflector = new \ReflectionClass($class);
        return $reflector->getConstants();
    }
}


// so the constants class has a list of classes to import constants from as well as its own "global" type constants.