我正在为我的网站和SEO优化编写元数据服务,似乎我无法克服错误。我不知道为什么。我将html控制器标签插入头标签中
ng-controller="MetaDataCtrl"
。我是Angular的初学者,而且我正在从在线教程中学习。
Main.js
var app = angular.module('WebApp', [
'ngRoute'
]);
angular.module("WebApp").service("metadataService" ["$location", "$rootScope", function($location, $routescope) {
var self = this;
self.tags = {};
// Set custom options or use provided fallback (default) options
self.loadMetadata = function loadMetadata(metadata) {
metadata = metadata || {};
metadata.title = metadata.title || 'BNL Consulting';
metadata.description = metadata.description || 'We are BNL Consulting.';
document.title = metadata.title;
self.tags = metadata;
};
// Make sure data gets reloaded when navigation occurs
$rootScope.$on('$routeChangeSuccess', function (event, newroute, oldroute) {
self.loadMetadata(newroute.metadata);
});
}
]),
/**
* Configure the Routes
*/
app.config(['$routeProvider', '$locationProvider', function($routes, $location) {
$location.html5Mode(true).hashPrefix('!');
$routes
// Home
.when("/", {templateUrl: "partials/home.html",
controller: "PageCtrl",
metadata: {
title: 'This is my title',
description: 'This is Desc.' }
})
}]);
app.controller('PageCtrl', function (/* $scope, $location, $http */) {
});
.controller('MetadataCtrl', function ($scope, metadataService) {
$scope.meta = metadataService;
});
答案 0 :(得分:1)
这是正确的代码,如您链接的文章(here)所示。我写了这篇文章,它为我无缝地工作。这还包括硬编码的后备标记,以防抓取工具无法获取Javascript。
注意:这些不是完整的文件,只是相关文件的重要部分。如果您需要帮助编写可在其他地方找到的指令,服务等的样板文件。无论如何,这里... ...
<强> app.js 强>
您可以在此处为每条路线(标题,说明等)提供自定义元数据
$routeProvider
.when('/', {
templateUrl: 'views/homepage.html',
controller: 'HomepageCtrl',
metadata: {
title: 'The Base Page Title',
description: 'The Base Page Description' }
})
.when('/portfolio', {
templateUrl: 'views/portfolio.html',
controller: 'PortfolioCtrl',
metadata: {
title: 'The Portfolio Page Title',
description: 'The Portfolio Page Description' }
})
metadata-service.js (服务)
设置自定义元数据选项或使用默认值作为后备。
var self = this;
// Set custom options or use provided fallback (default) options
self.loadMetadata = function(metadata) {
self.title = document.title = metadata.title || 'Fallback Title';
self.description = metadata.description || 'Fallback Description';
self.url = metadata.url || $location.absUrl();
self.image = metadata.image || 'fallbackimage.jpg';
self.ogpType = metadata.ogpType || 'website';
self.twitterCard = metadata.twitterCard || 'summary_large_image';
self.twitterSite = metadata.twitterSite || '@fallback_handle';
};
// Route change handler, sets the route's defined metadata
$rootScope.$on('$routeChangeSuccess', function (event, newRoute) {
self.loadMetadata(newRoute.metadata);
});
metaproperty.js (指令)
打包视图的元数据服务结果。
return {
restrict: 'A',
scope: {
metaproperty: '@'
},
link: function postLink(scope, element, attrs) {
scope.default = element.attr('content');
scope.metadata = metadataService;
// Watch for metadata changes and set content
scope.$watch('metadata', function (newVal, oldVal) {
setContent(newVal);
}, true);
// Set the content attribute with new metadataService value or back to the default
function setContent(metadata) {
var content = metadata[scope.metaproperty] || scope.default;
element.attr('content', content);
}
setContent(scope.metadata);
}
};
<强>的index.html 强>
<head>
<title>Fallback Title</title>
<meta name="description" metaproperty="description" content="Fallback Description">
<!-- Open Graph Protocol Tags -->
<meta property="og:url" content="fallbackurl.com" metaproperty="url">
<meta property="og:title" content="Fallback Title" metaproperty="title">
<meta property="og:description" content="Fallback Description" metaproperty="description">
<meta property="og:type" content="website" metaproperty="ogpType">
<meta property="og:image" content="fallbackimage.jpg" metaproperty="image">
<!-- Twitter Card Tags -->
<meta name="twitter:card" content="summary_large_image" metaproperty="twitterCard">
<meta name="twitter:title" content="Fallback Title" metaproperty="title">
<meta name="twitter:description" content="Fallback Description" metaproperty="description">
<meta name="twitter:site" content="@fallback_handle" metaproperty="twitterSite">
<meta name="twitter:image:src" content="fallbackimage.jpg" metaproperty="image">
</head>
答案 1 :(得分:0)
我相信这是因为你的标签在头标签上,这似乎是一个特例。我相信您的问题将由this回答。
答案 2 :(得分:0)
我解决了这个问题,我想与其他用户分享。我尝试这种方式基于SEO优化的文章,但它没有工作谷歌机器人仍然看到{{meta.tags.title}}而不是一些动态文本。我没有以正确的方式编写我的服务,因此当我编写ng-controller时错误会不断弹出。如果你的服务工作正常,那么angularJs标签没有问题
app.service("metadataService", ['$rootScope', function($rootScope) {
var self = this;
self.tags = {};
// Set custom options or use provided fallback (default) options
self.loadMetadata = function loadMetadata(metadata) {
metadata = metadata || {};
metadata.title = metadata.title || 'Meta Data ';
metadata.description = metadata.description || 'DESCRIPTION';
metadata.keywords = metadata.keywords || 'Some, Key, Words' ;
document.title = metadata.title;
self.tags = metadata;
}
;
// Make sure data gets reloaded when navigation occurs
$rootScope.$on('$routeChangeSuccess', function(event, newroute, oldroute) {
self.loadMetadata(newroute.metadata);
}
);
}
])