我的问题是ng-repeat没有自动更新数据。当我在我的代码中按add pin时,该元素被正确添加到数据库中。如果我重新加载页面,数据会正确显示,但不应该是有角度的。 对于记录,更新和删除工作正常。
提前致谢
这是我的app.js代码:
var app = angular.module("app", []);
app.controller("AppCtrl", function ($http) {
var app = this;
$http.get("/api/pin").success(function (data) {
app.pins = data.objects;
})
app.addPin = function (scope) {
$http.post("/api/pin", {"title":"new", "image":"http://placekitten.com/200/200/?image=" + app.pins.length})
.success(function(data) {
add.pins.push(data);
})
}
app.deletePin = function (pin) {
$http.delete("/api/pin/" + pin.id).success(function(response) {
app.pins.splice(app.pins.indexOf(pin), 1)
})
}
app.updatePin = function (pin) {
$http.put("/api/pin/" + pin.id, pin);
}
})
这是我的index.html文件:
<html>
<head>
<title>Pin Clone</title>
<script src="angular/angular.js"></script>
<script src="angular/angular-resource.js"></script>
<script src="js/app.js"></script>
</head>
<body ng-app="app" ng-controller="AppCtrl as app">
<button ng-click="app.addPin()">Add Pin</button>
<div ng-repeat="pin in app.pins">
<img ng-src="{{ pin.image }}" alt=""/>
<div class="ui">
<input type="text" ng-model="pin.title"/>
<button ng-click="app.updatePin(pin)">Update</button>
<button ng-click="app.deletePin(pin)">Delete</button>
</div>
</div>
</body>
</html>
答案 0 :(得分:3)
首先,您应该在控制器中使用$scope
(Doc)。您可以在this post中了解有关差异的更多信息。
因此你的控制器看起来像这样。
app.controller("AppCtrl", ["$scope", "$http",
function ($scope, $http) {
$http.get("/api/pin").success(function (data) {
$scope.pins = data.objects;
});
$scope.addPin = function () {
....
};
$scope.deletePin = function (pin) {
....
};
$scope.updatePin = function (pin) {
....
};
}]);
HTML:
<body ng-app="app" ng-controller="AppCtrl">
<button ng-click="addPin()">Add Pin</button>
<div ng-repeat="pin in pins">
<img ng-src="{{ pin.image }}" alt=""/>
<div class="ui">
<input type="text" ng-model="pin.title"/>
<button ng-click="updatePin(pin)">Update</button>
<button ng-click="deletePin(pin)">Delete</button>
</div>
</div>
</body>
最后,核心部分来了。模型更改时,您应该致电$apply
(Doc)。您可以在this blog post中阅读更多内容。
$http
.post("/api/pin", {
title: "new",
image:
"http://placekitten.com/200/200/?image="
+ $scope.pins.length
})
.success(function(data) {
$scope.$apply(function() {
$scope.pins.push(data);
});
});
因此,完整的控制器代码:
app.controller("AppCtrl", ["$scope", "$http",
function ($scope, $http) {
$http.get("/api/pin").success(function (data) {
$scope.pins = data.objects;
});
$scope.addPin = function () {
$http
.post("/api/pin", {
title: "new",
image:
"http://placekitten.com/200/200/?image="
+ $scope.pins.length
})
.success(function(data) {
$scope.$apply(function() {
$scope.pins.push(data);
});
});
};
$scope.deletePin = function (pin) {
$http
.delete("/api/pin/" + pin.id)
.success(function(response) {
$scope.$apply(function() {
$scope.pins.splice(
$scope.pins.indexOf(pin), 1
);
});
});
};
$scope.updatePin = function (pin) {
$http.put("/api/pin/" + pin.id, pin);
};
}]);
答案 1 :(得分:1)
不能同意加文。首先,你所做的一切都很好。创建控制器实例比使用$ scope更好。其次,这里不需要$ apply()。
问题是ng-repeat创建了一个新的范围。引脚更新时,app.pins不是。你应该做
var app = angular.module("app", []);
app.controller("AppCtrl", function ($http) {
var app = this;
$http.get("/api/pin").success(function (data) {
app.pins = data.objects;
})
app.addPin = function (scope) {
$http.post("/api/pin", {"title":"new", "image":"http://placekitten.com/200/200/?image=" + app.pins.length})
.success(function(data) {
add.pins.push(data);
})
}
app.deletePin = function (index) {
$http.delete("/api/pin/" + app.pins[index].id).success(function(response) {
app.pins.splice(index, 1)
})
}
app.updatePin = function (index) {
$http.put("/api/pin/" + app.pins[index].id, app.pins[index]);
}
})
和
<html>
<head>
<title>Pin Clone</title>
<script src="angular/angular.js"></script>
<script src="angular/angular-resource.js"></script>
<script src="js/app.js"></script>
</head>
<body ng-app="app" ng-controller="AppCtrl as app">
<button ng-click="app.addPin()">Add Pin</button>
<div ng-repeat="pin in app.pins track by $index">
<img ng-src="{{ pin.image }}" alt=""/>
<div class="ui">
<input type="text" ng-model="pin.title"/>
<button ng-click="app.updatePin($index)">Update</button>
<button ng-click="app.deletePin($index)">Delete</button>
</div>
</div>
</body>
</html>
点击此处:How to update ng-model on event click using $event in Angularjs
答案 2 :(得分:0)
在发布的代码中,您有错字错误
app.addPin = function (scope) {
$http.post("/api/pin", {"title":"new", "image":"http://placekitten.com/200/200/?image=" + app.pins.length})
.success(function(data) {
// add.pins.push(data); <--- app not add
app.pins.push(data)
})
}