Reactjs 在 Flux 架构中，如何管理客户端路由url 状态

[Update]

在研究了一系列React/flux应用程序之后，我得出了一个结论:我更喜欢单独处理路由，并与flux正交.策略是，URL/路由应该确定哪些组件被装载，组件根据路由参数和其他必要的应用程序状态从存储中请求数据.

[Original Answer]

在最近的一个项目中，我在try Flux时采用了一种方法，就是将路由层变成另一个存储.这意味着所有更改URL的链接实际上都会通过dispatcher触发一个操作，请求更新路由.RouteStore通过在浏览器中设置URL并设置一些内部数据(通过route-recognizer)来响应该调度，以便在store 触发change事件时，视图可以查询新的路由数据.

对我来说，一个不明显的问题是如何确保URL更改触发操作；我最终创建了一个mixin来为我管理它(注意:这不是100%健壮的，但对我使用的应用程序有效；您可能需要进行修改以满足您的需求).

// Mix-in to the top-level component to capture `click`
// events on all links and turn them into action dispatches;
// also manage HTML5 history via pushState/popState
var RoutingMixin = {
  componentDidMount: function() {
    // Some browsers have some weirdness with firing an extra 'popState'
    // right when the page loads
    var firstPopState = true;

    // Intercept all bubbled click events on the app's element
    this.getDOMNode().addEventListener('click', this._handleRouteClick);

    window.onpopstate = function(e) {
      if (firstPopState) {
        firstPopState = false;
        return;
      }
      var path = document.location.toString().replace(document.location.origin, '');
      this.handleRouteChange(path, true);
    }.bind(this);
  },

  componentWillUnmount: function() {
    this.getDOMNode().removeEventListener('click', this._handleRouteClick);
    window.onpopstate = null;
  },

  _handleRouteClick: function(e) {
    var target = e.target;

    // figure out if we clicked on an `a` tag
    while(target && target.tagName !== 'A') {
      target = target.parentNode;
    }

    if (!target) return;

    // if the user was holding a modifier key, don't intercept
    if (!e.altKey && !e.ctrlKey && !e.shiftKey && !e.metaKey) {
      e.preventDefault();

      var href = target.attributes.href.value;
      this.handleRouteChange(href, false);
    }
  }
};

其用途如下:

var ApplicationView = React.createClass({
  mixins: [RoutingMixin],

  handleRouteChange: function(newUrl, fromHistory) {
    this.dispatcher.dispatch(RouteActions.changeUrl(newUrl, fromHistory));
  },

  // ...
});

store 中的处理程序可能类似于:

RouteStore.prototype.handleChangeUrl = function(href, skipHistory) {
  var isFullUrl = function(url) {
    return url.indexOf('http://') === 0 || url.indexOf('https://') === 0;
  }

  // links with a protocol simply change the location
  if (isFullUrl(href)) {
    document.location = href;
  } else {
    // this._router is a route-recognizer instance
    var results = this._router.recognize(href);
    if (results && results.length) {
      var route = results[0].handler(href, results[0].params);
      this.currentRoute = route;
      if (!skipHistory) history.pushState(href, '', href);
    }

    this.emit("change");
  }
}