Javascript 使用AngularJS跟踪和统计点击次数,并发布到MongoDB
我希望能够跟踪用户对某个项目的点击,并让它更新与之关联的JSON对象,并显示所有点击次数。我知道如何创建和删除一个对象,但如何在用户单击和相应的投票按钮时添加新名称和值并更新对象?我们将非常感谢您的帮助,并提前向您表示感谢 HTMLJavascript 使用AngularJS跟踪和统计点击次数,并发布到MongoDB,javascript,jquery,angularjs,mongodb,mongoose,Javascript,Jquery,Angularjs,Mongodb,Mongoose,我希望能够跟踪用户对某个项目的点击,并让它更新与之关联的JSON对象,并显示所有点击次数。我知道如何创建和删除一个对象,但如何在用户单击和相应的投票按钮时添加新名称和值并更新对象?我们将非常感谢您的帮助,并提前向您表示感谢 HTML <body ng-controller="mainController"> <div class="table-responsive"> <table class="table"> &l
<body ng-controller="mainController">
<div class="table-responsive">
<table class="table">
<tr>
<td>Vote</td>
<td>Song</td>
<td>Edit</td>
</tr>
<tr ng-repeat="todo in todos">
<td><button class="btn btn-success icon-thumbs-up" alt="Up vote this song if you like it.">Vote</button></td>
<td>{{ todo.text }}</td>
<td><button class="btn btn-danger fa fa-times" ng-click="deleteTodo(todo._id)" alt="Remove the song if you need to make an edit and then add it back."></button></td>
</tr>
</table>
</div>
</body>
服务
angular.module('todoService', [])
// super simple service
// each function returns a promise object
.factory('Todos', function($http) {
return {
get : function() {
return $http.get('/api/todos');
},
create : function(todoData) {
return $http.post('/api/todos', todoData);
},
delete : function(id) {
return $http.delete('/api/todos/' + id);
}
}
});
服务器端角度
var Todo = require('./models/todo');
module.exports = function(app) {
// api ---------------------------------------------------------------------
// get all todos
app.get('/api/todos', function(req, res) {
// use mongoose to get all todos in the database
Todo.find(function(err, todos) {
// if there is an error retrieving, send the error. nothing after res.send(err) will execute
if (err)
res.send(err)
res.json(todos); // return all todos in JSON format
});
});
// create todo and send back all todos after creation
app.post('/api/todos', function(req, res) {
// create a todo, information comes from AJAX request from Angular
Todo.create({
text : req.body.text,
done : false
}, function(err, todo) {
if (err)
res.send(err);
// get and return all the todos after you create another
Todo.find(function(err, todos) {
if (err)
res.send(err)
res.json(todos);
});
});
});
// delete a todo
app.delete('/api/todos/:todo_id', function(req, res) {
Todo.remove({
_id : req.params.todo_id
}, function(err, todo) {
if (err)
res.send(err);
// get and return all the todos after you create another
Todo.find(function(err, todos) {
if (err)
res.send(err)
res.json(todos);
});
});
});
// application -------------------------------------------------------------
app.get('*', function(req, res) {
res.sendfile('./public/index.html'); // load the single view file (angular will handle the page changes on the front-end)
});
angular.module('todoController', [])
// inject the Todo service factory into our controller
.controller('mainController', function($scope, $http, Todos) {
$scope.formData = {};
$scope.loading = true;
// GET =====================================================================
// when landing on the page, get all todos and show them
// use the service to get all the todos
Todos.get()
.success(function(data) {
$scope.todos = data;
$scope.loading = false;
});
// CREATE ==================================================================
// when submitting the add form, send the text to the node API
$scope.createTodo = function() {
$scope.loading = true;
if ($scope.formData.text != undefined) {
// call the create function from our service (returns a promise object)
Todos.create($scope.formData)
// if successful creation, call our get function to get all the new todos
.success(function(data) {
$scope.loading = false;
$scope.formData = {}; // clear the form so our user is ready to enter another
$scope.todos.unshift(data); // assign our new list of todos
});
}
};
// DELETE ==================================================================
// delete a todo after checking it
$scope.deleteTodo = function(id) {
$scope.loading = true;
Todos.delete(id)
// if successful creation, call our get function to get all the new todos
.success(function(data) {
$scope.loading = false;
$scope.todos = data; // assign our new list of todos
});
};
});
})
客户端角度
var Todo = require('./models/todo');
module.exports = function(app) {
// api ---------------------------------------------------------------------
// get all todos
app.get('/api/todos', function(req, res) {
// use mongoose to get all todos in the database
Todo.find(function(err, todos) {
// if there is an error retrieving, send the error. nothing after res.send(err) will execute
if (err)
res.send(err)
res.json(todos); // return all todos in JSON format
});
});
// create todo and send back all todos after creation
app.post('/api/todos', function(req, res) {
// create a todo, information comes from AJAX request from Angular
Todo.create({
text : req.body.text,
done : false
}, function(err, todo) {
if (err)
res.send(err);
// get and return all the todos after you create another
Todo.find(function(err, todos) {
if (err)
res.send(err)
res.json(todos);
});
});
});
// delete a todo
app.delete('/api/todos/:todo_id', function(req, res) {
Todo.remove({
_id : req.params.todo_id
}, function(err, todo) {
if (err)
res.send(err);
// get and return all the todos after you create another
Todo.find(function(err, todos) {
if (err)
res.send(err)
res.json(todos);
});
});
});
// application -------------------------------------------------------------
app.get('*', function(req, res) {
res.sendfile('./public/index.html'); // load the single view file (angular will handle the page changes on the front-end)
});
angular.module('todoController', [])
// inject the Todo service factory into our controller
.controller('mainController', function($scope, $http, Todos) {
$scope.formData = {};
$scope.loading = true;
// GET =====================================================================
// when landing on the page, get all todos and show them
// use the service to get all the todos
Todos.get()
.success(function(data) {
$scope.todos = data;
$scope.loading = false;
});
// CREATE ==================================================================
// when submitting the add form, send the text to the node API
$scope.createTodo = function() {
$scope.loading = true;
if ($scope.formData.text != undefined) {
// call the create function from our service (returns a promise object)
Todos.create($scope.formData)
// if successful creation, call our get function to get all the new todos
.success(function(data) {
$scope.loading = false;
$scope.formData = {}; // clear the form so our user is ready to enter another
$scope.todos.unshift(data); // assign our new list of todos
});
}
};
// DELETE ==================================================================
// delete a todo after checking it
$scope.deleteTodo = function(id) {
$scope.loading = true;
Todos.delete(id)
// if successful creation, call our get function to get all the new todos
.success(function(data) {
$scope.loading = false;
$scope.todos = data; // assign our new list of todos
});
};
});
这是你要做的 将新字段添加到架构以存储投票:
votes: {type: Number, default: 0}
在服务器端添加一个新的处理程序,以在收到请求时递增vote
:
app.get('/api/todos/:todo_id/vote', function(req, res) {
Todo.update({_id: req.params.todo_id}, { $inc: {votes: 1} } ), function(err,doc){
...
}
}
向AngularJS服务添加新函数以调用此新API处理程序:
vote: function(id) {
return $http.get('/api/todos/' + id + '/vote');
}
连接NG单击NG重复元素以调用新的Svc函数注意:您需要在您的作用域中使用Todos
svc来执行以下操作,否则请在作用域中创建一个包装函数,就像您所做的那样
<td>
<button data-ng-click="Todos.vote(todo._id)"
class="btn.." alt="Up vote this....">Vote
</button>
</td>
投票
然后在视图中以某种方式显示返回的ToDo模型的新“投票”字段
看看这个:你可以得到很多使用Angular、node和Mongo的好例子,看看它附带的“articles”模块
我没有尝试过这些,但它会让你知道该怎么做。此外,请注意,这里没有任何东西可以阻止用户多次向上投票。希望有帮助 你的意思是如何在数据库中“添加新名称和值并更新对象?”吗?@AsyaKamsky是的,基本上这就是我想要做的,但我也希望它将每个对象的所有点击相加。你可以使用update$inc操作符:db.coll.update({criteria:here},{$inc:{counter:1})如果计数器存在,则将其递增1;如果计数器不存在,则将其设置为1(即,当计数器不存在时,将其从隐式值0递增)。这听起来对您所描述的内容已经足够了,之后您就不需要再做任何添加了。@AsyaKamsky谢谢。我会把它放在一个函数中,然后点击调用该函数的按钮吗?我不能这么说,因为我不确定你的应用程序到底需要怎么做。当在某个对象上单击按钮时,是否会增加特定字段?有多个按钮吗?您将跟踪计数器的多项内容?它似乎没有添加要投票的点击。包装器函数是什么意思?你是说像$scope.deleteTodo这样的函数吗?是的,像deleteTodo。在上面的shld工作中,您看到了什么错误?使用上面的代码和包装器,我在控制台中没有收到任何错误$scope.updateTodo=function(id){$scope.loading=true;Todos.vote(id)//如果创建成功,调用get函数获取所有新的Todos.success(function(data){$scope.loading=false;$scope.Todos=data;//分配新的Todos列表};}@aaronsil事实上,看起来我得到了这个。GET 500(内部服务器错误)好吧,todoID为null,但它的信息太少,无法说明原因。