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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace EloquentJs\ScriptGenerator\Model;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Contracts\Config\Repository;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Database\Eloquent\Model;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Inspector  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $excludeScopes = ['scopeScope', 'scopeEloquentJs'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var Repository  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $config;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Create a new Inspector instance.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Repository $config  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(Repository $config)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->config = $config;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Inspect a model class and return its metadata.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Model $instance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return Metadata  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function inspect(Model $instance)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new Metadata(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            class_basename($instance),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->findEndpoint($instance),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->findDateColumns($instance),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->findScopeMethods($instance)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Find the endpoint for this model.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Model $instance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string|null  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function findEndpoint(Model $instance)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($instance->getEndpoint()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $instance->getEndpoint();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->readModelConfig($instance, 'endpoint');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Get any additional date columns for this model.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Model $instance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function findDateColumns(Model $instance)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array_values(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            array_diff($instance->getDates(), ['created_at', 'updated_at', 'deleted_at'])  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Get the scope methods for this model with 'scope' prefix removed.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Model $instance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function findScopeMethods(Model $instance)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array_map(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            function($method) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return lcfirst(substr($method, 5));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            },  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            array_values(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                array_filter(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    get_class_methods($instance),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    function($method) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        return substr($method, 0, 5) === 'scope' and ! in_array($method, $this->excludeScopes);  | 
            
                            
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                                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Read from a model config value from the eloquentjs.php config file.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Model $instance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return mixed  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    protected function readModelConfig(Model $instance, $key)  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $className = get_class($instance);  | 
            
            
                                                        
            
                                    
            
            
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                        return $this->config->get("eloquentjs.generator.{$className}.{$key}"); | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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PHP has two types of connecting operators (logical operators, and boolean operators):
and&&or||The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&, or||.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
dieintroduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrowat this point:These limitations lead to logical operators rarely being of use in current PHP code.