错误处理 - 404 for remoteMethods

Question

在 strongloop. I have been able to add custom routes using remoteMethods. However, I am a bit confused in setting up 404 for those routes. I have one route for model category named mature that takes one argument(categorId) and fetches all games under that category that have boolean value set to true for mature. The endpoint url is: http://localhost:3000/api/Categories/1004/games/mature. If I place a non existent categorId, it breaks. What would be the best way to setup routes to handle 404 for errors? For example, display "no such category id". Github REPO

的帮助下，我已经能够轻松地设置基本的 node.js api

common/models/category.js

Category.mature = function(id, limit) {
    var app = this.app;
    var Games = app.models.Games;
    Category.findById(id, {}, function(err, category){
        if (err) return callback(err);
        //set limit
        if (limit && limit > 5){
          limit = 5;
        }else if(limit === undefined){
          limit = 5;
        }
        Games.find({
            "where": {
                categoryId: id,
                mature: true,
                gameId: {gt: hashids.decode(after)}
            },
            "limit": limit
        }, function(err, gameArray) {
            if (err) return callback(err);
            callback(null, gameArr);
        });
    )};
    Category.remoteMethod(
    'mature', {
        accepts: [
            {arg: 'id', type: 'number', required: true},
            {arg: 'limit',type: 'number',required: false}
        ],
        // mixing ':id' into the rest url allows $owner to be determined and used for access control
        http: {
            path: '/:id/games/mature',
            verb: 'get'
        },
        returns: {
            root: true,
            type: 'object'
        }
    }
);

};

Answer 1

在调用 callback(err) 之前将 err.statusCode 设置为 404:

if(!category) {
  var err = new Error('Category ID ' + id + ' does not exist.');
  err.statusCode = 404;
  callback(err);
}

这将导致：

错误处理 - 404 for remoteMethods

Error-handling - 404 for remoteMethods

node.js

loopbackjs

strongloop