[英]Error: Route.get() requires callback functions but got a [object Undefined]
[英]Route.get() requires callback functions but got a [object Undefined] after modifying server routes
代码:
服务器路由
'use strict';
/**
* Module dependencies
*/
var articlesPolicy = require('../policies/articles.server.policy'),
articles = require('../controllers/articles.server.controller');
module.exports = function (app) {
// Articles collection routes
app.route('/api/articles').all(articlesPolicy.isAllowed)
.get(articles.list)
.post(articles.create);
// Own articles collection routes
app.route('/api/articles/myarticles').all(articlesPolicy.isAllowed)
.get(articles.mylist)
.delete(articles.delete);
// Single article routes
app.route('/api/articles/:articleId').all(articlesPolicy.isAllowed)
.get(articles.read)
.put(articles.update)
.delete(articles.delete);
// Finish by binding the article middleware
app.param('articleId', articles.articleByID);
};
控制器
'use strict';
/**
* Module dependencies
*/
var path = require('path'),
mongoose = require('mongoose'),
Article = mongoose.model('Article'),
errorHandler = require(path.resolve('./modules/core/server/controllers/errors.server.controller'));
/**
* Create an article
*/
exports.create = function (req, res) {
var article = new Article(req.body);
article.user = req.user;
article.save(function (err) {
if (err) {
return res.status(422).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.json(article);
}
});
};
/**
* Show the current article
*/
exports.read = function (req, res) {
// convert mongoose document to JSON
var article = req.article ? req.article.toJSON() : {};
// Add a custom field to the Article, for determining if the current User is the "owner".
// NOTE: This field is NOT persisted to the database, since it doesn't exist in the Article model.
article.isCurrentUserOwner = !!(req.user && article.user && article.user._id.toString() === req.user._id.toString());
res.json(article);
};
/**
* Update an article
*/
exports.update = function (req, res) {
var article = req.article;
article.title = req.body.title;
article.content = req.body.content;
article.save(function (err) {
if (err) {
return res.status(422).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.json(article);
}
});
};
/**
* Delete an article
*/
exports.delete = function (req, res) {
var article = req.article;
article.remove(function (err) {
if (err) {
return res.status(422).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.json(article);
}
});
};
/**
* List of Articles
*/
exports.list = function (req, res) {
Article.find().sort('-created').populate('user', 'displayName').exec(function (err, articles) {
if (err) {
return res.status(422).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.json(articles);
}
});
};
/**
* List of own Articles
*/
exports.myList = function (req, res) {
Article.find({ user: req.user._id.toString() }).sort('-created').populate('user', 'displayName').exec(function (err, articles) {
if (err) {
return res.status(422).send({
message: errorHandler.getErrorMessage(err)
});
} else {
res.json(articles);
}
});
};
/**
* Article middleware
*/
exports.articleByID = function (req, res, next, id) {
if (!mongoose.Types.ObjectId.isValid(id)) {
return res.status(400).send({
message: 'Article is invalid'
});
}
Article.findById(id).populate('user', 'displayName').exec(function (err, article) {
if (err) {
return next(err);
} else if (!article) {
return res.status(404).send({
message: 'No article with that identifier has been found'
});
}
req.article = article;
next();
});
};
服务器策略
'use strict';
/**
* Module dependencies
*/
var acl = require('acl');
// Using the memory backend
acl = new acl(new acl.memoryBackend());
/**
* Invoke Articles Permissions
*/
exports.invokeRolesPolicies = function () {
acl.allow([{
roles: ['admin'],
allows: [{
resources: '/api/articles',
permissions: '*'
}, {
resources: '/api/articles/:articleId',
permissions: '*'
}, {
resources: '/api/articles/create',
permissions: '*'
}]
}, {
roles: ['user'],
allows: [{
resources: '/api/articles',
permissions: ['get']
}, {
resources: '/api/articles/:articleId',
permissions: ['get']
}, {
resources: '/api/articles/create',
permissions: '*'
}, {
resources: '/api/myarticles/',
permissions: '*'
}]
}, {
roles: ['guest'],
allows: [{
resources: '/api/articles',
permissions: ['get']
}, {
resources: '/api/articles/:articleId',
permissions: ['get']
}]
}]);
};
/**
* Check If Articles Policy Allows
*/
exports.isAllowed = function (req, res, next) {
var roles = (req.user) ? req.user.roles : ['guest'];
// If an article is being processed and the current user created it then allow any manipulation
if (req.article && req.user && req.article.user && req.article.user.id === req.user.id) {
return next();
}
// Check for user roles
acl.areAnyRolesAllowed(roles, req.route.path, req.method.toLowerCase(), function (err, isAllowed) {
if (err) {
// An authorization error occurred
return res.status(500).send('Unexpected authorization error');
} else {
if (isAllowed) {
// Access granted! Invoke next middleware
return next();
} else {
return res.status(403).json({
message: 'User is not authorized'
});
}
}
});
};
情况:
我将 app.route('/api/articles/myarticles') 添加到我的服务器路由中。
立即,我在终端中收到以下错误:
Route.get() 需要回调函数,但在 Route.(anonymous function) [as get] 处得到一个 [object Undefined]
题:
我做错了什么,我该如何解决?
我看到的:
快速路由:.get() 需要回调函数但得到一个 [object Object]
我一定是声明了错误。
你有一个简单的拼写错误。 你有articles.mylist
而不是articles.myList
:
app.route('/api/articles/myarticles').all(articlesPolicy.isAllowed)
.get(articles.myList) // <--- it should be myList instead of mylist
.delete(articles.delete);
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