271 lines
9.7 KiB
PHP
271 lines
9.7 KiB
PHP
<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\rest;
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use Yii;
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use yii\base\InvalidConfigException;
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use yii\helpers\Inflector;
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use yii\web\CompositeUrlRule;
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use yii\web\UrlRule as WebUrlRule;
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use yii\web\UrlRuleInterface;
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/**
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* UrlRule is provided to simplify the creation of URL rules for RESTful API support.
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*
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* The simplest usage of UrlRule is to declare a rule like the following in the application configuration,
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*
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* ```php
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* [
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* 'class' => 'yii\rest\UrlRule',
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* 'controller' => 'user',
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* ]
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* ```
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*
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* The above code will create a whole set of URL rules supporting the following RESTful API endpoints:
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*
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* - `'PUT,PATCH users/<id>' => 'user/update'`: update a user
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* - `'DELETE users/<id>' => 'user/delete'`: delete a user
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* - `'GET,HEAD users/<id>' => 'user/view'`: return the details/overview/options of a user
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* - `'POST users' => 'user/create'`: create a new user
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* - `'GET,HEAD users' => 'user/index'`: return a list/overview/options of users
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* - `'users/<id>' => 'user/options'`: process all unhandled verbs of a user
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* - `'users' => 'user/options'`: process all unhandled verbs of user collection
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*
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* You may configure [[only]] and/or [[except]] to disable some of the above rules.
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* You may configure [[patterns]] to completely redefine your own list of rules.
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* You may configure [[controller]] with multiple controller IDs to generate rules for all these controllers.
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* For example, the following code will disable the `delete` rule and generate rules for both `user` and `post` controllers:
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*
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* ```php
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* [
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* 'class' => 'yii\rest\UrlRule',
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* 'controller' => ['user', 'post'],
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* 'except' => ['delete'],
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* ]
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* ```
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*
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* The property [[controller]] is required and should represent one or multiple controller IDs.
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* Each controller ID should be prefixed with the module ID if the controller is within a module.
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* The controller ID used in the pattern will be automatically pluralized (e.g. `user` becomes `users`
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* as shown in the above examples).
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*
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* For more details and usage information on UrlRule, see the [guide article on rest routing](guide:rest-routing).
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class UrlRule extends CompositeUrlRule
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{
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/**
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* @var string the common prefix string shared by all patterns.
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*/
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public $prefix;
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/**
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* @var string the suffix that will be assigned to [[\yii\web\UrlRule::suffix]] for every generated rule.
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*/
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public $suffix;
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/**
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* @var string|array the controller ID (e.g. `user`, `post-comment`) that the rules in this composite rule
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* are dealing with. It should be prefixed with the module ID if the controller is within a module (e.g. `admin/user`).
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*
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* By default, the controller ID will be pluralized automatically when it is put in the patterns of the
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* generated rules. If you want to explicitly specify how the controller ID should appear in the patterns,
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* you may use an array with the array key being as the controller ID in the pattern, and the array value
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* the actual controller ID. For example, `['u' => 'user']`.
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*
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* You may also pass multiple controller IDs as an array. If this is the case, this composite rule will
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* generate applicable URL rules for EVERY specified controller. For example, `['user', 'post']`.
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*/
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public $controller;
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/**
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* @var array list of acceptable actions. If not empty, only the actions within this array
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* will have the corresponding URL rules created.
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* @see patterns
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*/
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public $only = [];
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/**
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* @var array list of actions that should be excluded. Any action found in this array
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* will NOT have its URL rules created.
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* @see patterns
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*/
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public $except = [];
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/**
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* @var array patterns for supporting extra actions in addition to those listed in [[patterns]].
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* The keys are the patterns and the values are the corresponding action IDs.
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* These extra patterns will take precedence over [[patterns]].
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*/
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public $extraPatterns = [];
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/**
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* @var array list of tokens that should be replaced for each pattern. The keys are the token names,
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* and the values are the corresponding replacements.
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* @see patterns
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*/
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public $tokens = [
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'{id}' => '<id:\\d[\\d,]*>',
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];
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/**
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* @var array list of possible patterns and the corresponding actions for creating the URL rules.
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* The keys are the patterns and the values are the corresponding actions.
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* The format of patterns is `Verbs Pattern`, where `Verbs` stands for a list of HTTP verbs separated
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* by comma (without space). If `Verbs` is not specified, it means all verbs are allowed.
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* `Pattern` is optional. It will be prefixed with [[prefix]]/[[controller]]/,
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* and tokens in it will be replaced by [[tokens]].
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*/
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public $patterns = [
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'PUT,PATCH {id}' => 'update',
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'DELETE {id}' => 'delete',
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'GET,HEAD {id}' => 'view',
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'POST' => 'create',
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'GET,HEAD' => 'index',
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'{id}' => 'options',
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'' => 'options',
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];
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/**
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* @var array the default configuration for creating each URL rule contained by this rule.
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*/
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public $ruleConfig = [
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'class' => 'yii\web\UrlRule',
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];
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/**
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* @var bool whether to automatically pluralize the URL names for controllers.
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* If true, a controller ID will appear in plural form in URLs. For example, `user` controller
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* will appear as `users` in URLs.
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* @see controller
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*/
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public $pluralize = true;
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/**
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* {@inheritdoc}
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*/
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public function init()
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{
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if (empty($this->controller)) {
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throw new InvalidConfigException('"controller" must be set.');
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}
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$controllers = [];
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foreach ((array) $this->controller as $urlName => $controller) {
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if (is_int($urlName)) {
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$urlName = $this->pluralize ? Inflector::pluralize($controller) : $controller;
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}
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$controllers[$urlName] = $controller;
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}
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$this->controller = $controllers;
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$this->prefix = trim($this->prefix, '/');
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parent::init();
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}
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/**
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* {@inheritdoc}
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*/
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protected function createRules()
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{
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$only = array_flip($this->only);
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$except = array_flip($this->except);
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$patterns = $this->extraPatterns + $this->patterns;
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$rules = [];
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foreach ($this->controller as $urlName => $controller) {
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$prefix = trim($this->prefix . '/' . $urlName, '/');
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foreach ($patterns as $pattern => $action) {
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if (!isset($except[$action]) && (empty($only) || isset($only[$action]))) {
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$rules[$urlName][] = $this->createRule($pattern, $prefix, $controller . '/' . $action);
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}
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}
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}
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return $rules;
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}
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/**
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* Creates a URL rule using the given pattern and action.
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* @param string $pattern
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* @param string $prefix
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* @param string $action
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* @return UrlRuleInterface
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*/
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protected function createRule($pattern, $prefix, $action)
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{
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$verbs = 'GET|HEAD|POST|PUT|PATCH|DELETE|OPTIONS';
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if (preg_match("/^((?:($verbs),)*($verbs))(?:\\s+(.*))?$/", $pattern, $matches)) {
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$verbs = explode(',', $matches[1]);
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$pattern = isset($matches[4]) ? $matches[4] : '';
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} else {
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$verbs = [];
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}
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$config = $this->ruleConfig;
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$config['verb'] = $verbs;
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$config['pattern'] = rtrim($prefix . '/' . strtr($pattern, $this->tokens), '/');
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$config['route'] = $action;
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if (!empty($verbs) && !in_array('GET', $verbs)) {
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$config['mode'] = WebUrlRule::PARSING_ONLY;
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}
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$config['suffix'] = $this->suffix;
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return Yii::createObject($config);
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}
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/**
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* {@inheritdoc}
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*/
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public function parseRequest($manager, $request)
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{
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$pathInfo = $request->getPathInfo();
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foreach ($this->rules as $urlName => $rules) {
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if (strpos($pathInfo, $urlName) !== false) {
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foreach ($rules as $rule) {
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/* @var $rule WebUrlRule */
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$result = $rule->parseRequest($manager, $request);
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if (YII_DEBUG) {
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Yii::debug([
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'rule' => method_exists($rule, '__toString') ? $rule->__toString() : get_class($rule),
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'match' => $result !== false,
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'parent' => self::className(),
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], __METHOD__);
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}
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if ($result !== false) {
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return $result;
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}
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}
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}
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}
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return false;
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}
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/**
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* {@inheritdoc}
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*/
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public function createUrl($manager, $route, $params)
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{
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$this->createStatus = WebUrlRule::CREATE_STATUS_SUCCESS;
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foreach ($this->controller as $urlName => $controller) {
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if (strpos($route, $controller) !== false) {
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/* @var $rules UrlRuleInterface[] */
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$rules = $this->rules[$urlName];
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$url = $this->iterateRules($rules, $manager, $route, $params);
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if ($url !== false) {
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return $url;
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}
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} else {
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$this->createStatus |= WebUrlRule::CREATE_STATUS_ROUTE_MISMATCH;
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}
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}
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if ($this->createStatus === WebUrlRule::CREATE_STATUS_SUCCESS) {
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// create status was not changed - there is no rules configured
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$this->createStatus = WebUrlRule::CREATE_STATUS_PARSING_ONLY;
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}
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return false;
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}
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}
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