Ruby on rails AngularJS如何转换Rails API的请求
我将AngularJS 1.x添加到表单中,用于编辑订单(在本例中可以更改日期、发货和地址)。我有一个Ruby on Rails JSON API,有几个端点:Ruby on rails AngularJS如何转换Rails API的请求,ruby-on-rails,angularjs,Ruby On Rails,Angularjs,我将AngularJS 1.x添加到表单中,用于编辑订单(在本例中可以更改日期、发货和地址)。我有一个Ruby on Rails JSON API,有几个端点: GET /addresses [{ id: 1, line1: "...", line2: "...", zip: "..." }, ...] GET /shippings [{ id: 1, name: "priority" }, ...] GET /orders/:id { date: "...", shipping: {
GET /addresses
[{ id: 1, line1: "...", line2: "...", zip: "..." }, ...]
GET /shippings
[{ id: 1, name: "priority" }, ...]
GET /orders/:id
{ date: "...",
shipping: { id: 1, name: "priority" },
address: { id: 1, line1: "...", line2: "...", zip: "..." } }
PATCH /orders/:id
{ date: "...",
shipping_id: 1,
address_attributes: { line1: "...", line2: "...", zip: "..." } }
在我的OrdersController
中,我有以下内容:
var app = angular.module('app');
app.controller('OrdersController', ['$scope', 'Order', 'Address', 'Shipping',
function($scope, Order, Address, Shipping) {
$scope.order = Order.get({ id: 123 });
$scope.addresses = Address.query();
$scope.shippings = Shipping.query();
$scope.save = function() {
$scope.order.$save(function() {
// ...
}, function(error) { alert(error); });
};
}
]);
我的表格很简单:
<form ng-submit="save()">
<input type="date" ng-model="order.date" />
<select ng-model="order.shipping"
ng-options="option.name for option in shippings track by option.id">
</select>
<input type="text" ng-model="order.address.line1" />
<input type="text" ng-model="order.address.line2" />
<input type="text" ng-model="order.address.zip" />
<input type="submit" value="Save"/>
</form>
在AngularJS中,推荐的方法是什么?这应该通过拦截器来完成吗?我是否应该创建一个新的订单
资源,并按所需的表单顺序复制属性?Angular的(and)服务具有一个名为transformRequest
的配置选项,该选项接受一个可用于转换请求数据的函数(或函数数组)
假设您正在使用这些服务中的一个,这将是处理对象映射的最合适的位置
例如:
注意,在我的示例中,我使用一组函数来转换请求。这是因为,默认情况下,
$http
用于字符串化数据对象,我仍然希望在映射器函数运行后出现这种行为。AngularJS$resource
支持在每个操作上设置transformRequest
和transformResponse
(请参阅)。例如:
angular.module("app").factory("OrderSerializer", function() {
return function(data) {
var parameters = angular.copy(data);
if (parameters.address) {
parameters.address_attributes = parameters.address;
delete parameters.address;
}
if (parameters.shipping && parameters.s.id) {
parameters.shipping_id = parameters.shipping.id;
delete parameters.shipping;
}
return parameters;
};
});
angular.module("app").factory("Order", ["$resource", "OrderSerializer",
function($resource, serializer) {
return $resource("...", { id: "@id" }, {
"save": {
method: "...",
transformRequest: [serializer, angular.toJson],
},
});
}
]);
如果需要高级转换,则值得寻找ng资源的替代品,例如
function MyController($http) {
var vm = this;
vm.data = {
message: 'Hello World!'
};
vm.mapper = function(data, headersGetter) {
data.greeting = data.message;
delete data.message;
return data;
};
$http({
url: '/path/to/endpoint',
method: 'PUT',
data: vm.data,
transformRequest: [vm.mapper, angular.toJson]
});
}
angular.module("app").factory("OrderSerializer", function() {
return function(data) {
var parameters = angular.copy(data);
if (parameters.address) {
parameters.address_attributes = parameters.address;
delete parameters.address;
}
if (parameters.shipping && parameters.s.id) {
parameters.shipping_id = parameters.shipping.id;
delete parameters.shipping;
}
return parameters;
};
});
angular.module("app").factory("Order", ["$resource", "OrderSerializer",
function($resource, serializer) {
return $resource("...", { id: "@id" }, {
"save": {
method: "...",
transformRequest: [serializer, angular.toJson],
},
});
}
]);