I was using an external service to get Aggregate Rating in my recipes blog, but dis service disappeared so I decided to build one myself. First of all, this is my first experience with cloud data and JavaScript programming so please, be paciente with me :-).
I'm doing my experiments in this duplicate of my blog: https://jleavalc.blogspot.com/
by now it works as I planned, letting one to vote and storing results in a oracle table, making it possible to retrieve results from a view of this table to get ratingCount and ratingValue values, as anyone can see in that link...
But at the end, despite you can see the stars, despite you can vote and get result stored, showing voting results, Structured data testing tool don't see tag values, so all work is useless.
I think I'm getting close to the problem, but not getting close to the solution. I have the impression that the cause of my problems is the asynchrony of the execution of the script that brings the data from the table, while the function is executed, the browser continues to render the page and it doesn't arrive in time to write those values before the google tool can read them, so they appear empty to it.
I have tried everything including labels and variables in GTM with the same result. The latest version of the code, from this morning is installed right before the "/head" tag and it looks like this:
<script style='text/javascript'>
var myPostId = "<data:widgets.Blog.first.posts.first.id/>";
// <![CDATA[
var micuenta = 0;
var nota = 0;
getText("https://ge4e65cc87f573d-XXXXXXXXXXXX.adb.eu-amsterdam-1.oraclecloudapps.com/ords/admin/notas/?q={\"receta\":{\"$eq\":\"" + myPostId + "\"}}");
async function getText(file) {
let x = await fetch(file);
let y = await x.text();
let datos = JSON.parse(y);
nota = datos.items[0].media;
micuenta = datos.items[0].votos;
};
// This version gives the same result and is interchangeable with the previous one. I keep it commented so as not to forget it:
// var settings = {
// "url": "https://ge4e65cc87f573d-db20220526112405.adb.eu-amsterdam-1.oraclecloudapps.com/ords/admin/notas/?q={\"receta\":{\"$eq\":\"" + myPostId + "\"}}",
// "method": "GET",
// "timeout": 0,
// "async": false,
// };
// $.ajax(settings).done(function (response) {
// if (response.items.length != 0) {
// micuenta = response.items[0].votos;
// nota = response.items[0].media;
// }
// });
</script>
The key is, I think, getting this call to execute before Google's tool finishes rendering the Blogger post page.
The URL that I invoke to get the data calls an oracle view that returns a single row with the corresponding data from the recipe, placing this call:
recipe
In the browser the result is the following:
{"items":[{"receta":"5086941171011962392","media":4.5,"votos":12}],"hasMore":false,"limit":25,"offset":0,"count":1,"links":[{"rel":"self","href":"https://ge4e65cc87f573d-db20220526112405.adb.eu-amsterdam-1.oraclecloudapps.com/ords/admin/notas/?q=%7B%22receta%22:%7B%22%24eq%22:%225086941171011962392%22%7D%7D"},{"rel":"edit","href":"https://ge4e65cc87f573d-db20220526112405.adb.eu-amsterdam-1.oraclecloudapps.com/ords/admin/notas/?q=%7B%22receta%22:%7B%22%24eq%22:%225086941171011962392%22%7D%7D"},{"rel":"describedby","href":"https://ge4e65cc87f573d-db20220526112405.adb.eu-amsterdam-1.oraclecloudapps.com/ords/admin/metadata-catalog/notas/"},{"rel":"first","href":"https://ge4e65cc87f573d-db20220526112405.adb.eu-amsterdam-1.oraclecloudapps.com/ords/admin/notas/?q=%7B%22receta%22:%7B%22%24eq%22:%225086941171011962392%22%7D%7D"}]}
And I just need to take the median and votes values to create the RatingCount and RatingValue labels
Can anyone offer me an idea that solves this little problem? :-)
Related
I am new to Backbone.js and I am trying to create an application that can check if you completed the videos games you control.
I am using an API to retrieve any information about videogames.
I want to be able to search for a game, for example "Zelda". It should then list every Zelda game.
I get stuck because I don't know how to get the search function to work properly with the API and I don't know how to render it properly. I have written a template for the games that should render.
I have no clue what to do know, or if I'm even on the right track. I am not asking for someone to code it completely, I am asking for a step in the right direction.
Let me know if you need more code.
library_view.js
var LibraryView = Backbone.View.extend({
el:$("#games"),
url: url = "http://www.giantbomb.com/api/search/?api_key=[KEY]",
events:{
"keypress input":"findGames"
},
findGames:function(e){
if(e.which == 13){
query = $(".searchfield").val()
field_list = "name,platforms"
resources = "game"
url = url +"&query="+ query +"field_list"+ field_list +"resources"+ resources
}
},
index.html
<input type="search" placeholder="Find a game" class="searchfield">
It looks like you are mashing together a View and a Model.
A view, for instance, shouldn't have URL inside it, it doesn't know what to do with it.
The correct path would be something roughly like so:
var SearchModel = Backbone.Model.extend();
var LibraryView = Backbone.View.extend({
el: $("#games"),
events:{
"keypress input":"findGames"
},
findGames: function(e){
// get query, field_list, resources
var searchModel = new SearchModel()
searchModel.fetch({
url: "http://www.giantbomb.com/api/search/?api_key=[KEY]"+"&query="+ query +"field_list"+ field_list +"resources"+ resources
});
// do something with searchModel
}
});
After the fetch, searchModel will hold the data Backbone Model style.
Let's say the returned value from the AJAX call is:
{
"answer": 42
}
Then:
searchModel.get("answer") // = 42
The SearchModel is just an abstraction here as you don't really need it (you can just ajax it). But I put it to help you understand what Model represents, it basically represents only data... It doesn't know what View is.
I have a ctrl that pulls a json array from an API. In my code I have an ng-repeat that loops through results.
This is for a PhoneGap mobile app and I'd like to take a single element from the array so that I can use it for the page title.
So... I'm wanting to use 'tool_type' outside of my ng-repeat.
Thanks in advance - I'm just not sure where to start on this one.
Example json data
[{ "entry_id":"241",
"title":"70041",
"url_title":"event-70041",
"status":"open",
"images_url":"http://DOMAIN.com/uploads/event_images/241/70041__small.jpg",
"application_details":"Cobalt tool bits are designed for machining work hardening alloys and other tough materials. They have increased water resistance and tool life. This improves performance and retention of the cutting edge.",
"product_sku":"70041",
"tool_type": "Toolbits",
"sort_group": "HSCo Toolbits",
"material":"HSCo8",
"pack_details":"Need Checking",
"discount_category":"102",
"finish":"P0 Bright Finish",
"series_description":"HSS CO FLAT TOOLBIT DIN4964"},
..... MORE .....
Ctrl to call API
// Factory to get products by category
app.factory("api_get_channel_entries_products", function ($resource) {
var catID = $.url().attr('relative').replace(/\D/g,'');
return $resource(
"http://DOMAIN.com/feeds/app_productlist/:cat_id",
{
cat_id: catID
}
);
});
// Get the list from the factory and put data into $scope.categories so it can be repeated
function productList ($scope, api_get_channel_entries_products, $compile) {
$scope.products_list = [];
// Get the current URL and then regex out everything except numbers - ie the entry id
$.url().attr('anchor').replace(/\D/g,'');
$scope.products_list = api_get_channel_entries_products.query();
}
Angular works as following:
Forgiving: expression evaluation is forgiving to undefined and null, unlike in JavaScript, >where trying to evaluate undefined properties can generate ReferenceError or TypeError.
http://code.angularjs.org/1.2.9/docs/guide/expression
so you only need to write:
<title>{{products_list[0].tool_type}}</title>
if there is a zero element the title will be the tool_type, if not, there is no title.
Assuming you want to select a random object from the list to use something like this should work:
$scope.product-tool_type = products_list[Math.floor(Math.random()*products_list.length)].tool_type
Then to display the result just use
<h1>{{product-tool_type}}</h1>
Or alternatively:
<h1>{{products_list[Math.floor(Math.random()*products_list.length)].tool_type}}</h1>
This was originally posted on discuss.emberjs.com. See:
http://discuss.emberjs.com/t/what-is-the-proper-use-of-store-filter-store-find-for-infinite-scrolling/3798/2
but that site seems to get worse and worse as far as quality of content these days so I'm hoping StackOverflow can rescue me.
Intent: Build a page in ember with ember-data implementing infinite scrolling.
Background Knowledge: Based on the emberjs.com api docs on ember-data, specifically the store.filter and store.find methods ( see: http://emberjs.com/api/data/classes/DS.Store.html#method_filter ) I should be able to set the model hook of a route to the promise of a store filter operation. The response of the promise should be a filtered record array which is a an array of items from the store filtered by a filter function which is suppose to be constantly updated whenever new items are pushed into the store. By combining this with the store.find method which will push items into the store, the filteredRecordArray should automatically update with the new items thus updating the model and resulting in new items showing on the page.
For instance, assume we have a Questions Route, Controller and a model of type Question.
App.QuestionsRoute = Ember.Route.extend({
model: function (urlParams) {
return this.get('store').filter('question', function (q) {
return true;
});
}
});
Then we have a controller with some method that will call store.find, this could be triggered by some event/action whether it be detecting scroll events or the user explicitly clicking to load more, regardless this method would be called to load more questions.
Example:
App.QuestionsController = Ember.ArrayController.extend({
...
loadMore: function (offset) {
return this.get('store').find('question', { skip: currentOffset});
}
...
});
And the template to render the items:
...
{{#each question in controller}}
{{question.title}}
{{/each}}
...
Notice, that with this method we do NOT have to add a function to the store.find promise which explicitly calls this.get('model').pushObjects(questions); In fact, trying to do that once you have already returned a filter record array to the model does not work. Either we manage the content of the model manually, or we let ember-data do the work and I would very much like to let Ember-data do the work.
This is is a very clean API; however, it does not seem to work they way I've written it. Based on the documentation I cannot see anything wrong.
Using the Ember-Inspector tool from chrome I can see that the new questions from the second find call are loaded into the store under the 'question' type but the page does not refresh until I change routes and come back. It seems like the is simply a problem with observers, which made me think that this would be a bug in Ember-Data, but I didn't want to jump to conclusions like that until I asked to see if I'm using Ember-Data as intended.
If someone doesn't know exactly what is wrong but knows how to use store.push/pushMany to recreate this scenario in a jsbin that would also help too. I'm just not familiar with how to use the lower level methods on the store.
Help is much appreciated.
I just made this pattern work for myself, but in the "traditional" way, i.e. without using store.filter().
I managed the "loadMore" part in the router itself :
actions: {
loadMore: function () {
var model = this.controller.get('model'), route = this;
if (!this.get('loading')) {
this.set('loading', true);
this.store.find('question', {offset: model.get('length')}).then(function (records) {
model.addObjects(records);
route.set('loading', false);
});
}
}
}
Since you already tried the traditional way (from what I see in your post on discuss), it seems that the key part is to use addObjects() instead of pushObjects() as you did.
For the records, here is the relevant part of my view to trigger the loadMore action:
didInsertElement: function() {
var controller = this.get('controller');
$(window).on('scroll', function() {
if ($(window).scrollTop() > $(document).height() - ($(window).height()*2)) {
controller.send('loadMore');
}
});
},
willDestroyElement: function() {
$(window).off('scroll');
}
I am now looking to move the loading property to the controller so that I get a nice loader for the user.
somewhat of a javascript novice here.
I'm trying to create this: http://i.imgur.com/LXFzy.png from the Spotify UI Guidelines.
Basically a 64x64 album cover with an appropriate sized play button.
This is what I have so far:
function DataSource(playlist) {
this.count = function() {
return playlist.length;
}
// make node with cover, trackname, artistname
this.makeNode = function(track_num) {
var t = playlist.data.getTrack(track_num);
// console.log(t);
var li = new dom.Element('li');
//generate cover image with play/pause button
var track = m.Track.fromURI(t.uri, function(a) {
var trackPlayer = new v.Player();
trackPlayer.track;
trackPlayer.context = a;
dom.inject(trackPlayer.node, li, 'top')
});
//track name
var trackName = new dom.Element('p', {
className: 'track',
text: t.name
});
//artist name
var artistName = new dom.Element('p', {
className: 'artist',
text: t.artists[0].name
});
dom.adopt(li, trackName, artistName);
return li;
}
}
This datasource function feeds into a pager function later in the code. This code generates image, artist name and track name just fine except I can't seem to get the image to be 64x64 without overriding with my own css. I'm sure there is a way to set this in javascript since the core Spotify CSS files include a class for it however I'm at a loss at how to do it.
Also the play button renders but gives an error in the console that the track has no method 'get' when I click on it. How am I suppose to know it needs a get? Is there some way I can see this player function so I know what I'm doing wrong with it?
Any help would be greatly appreciated, I'm sure it'll help droves of people too as there is no documentation anywhere I can find on how to do this.
Check the code here: https://github.com/ptrwtts/kitchensink/blob/master/js/player.js
The kitchensink app displays a lot of the Spotify Apps API functionality
For the playback button, I know that it doesn't seem to actually work for single tracks used as the context. It really only works if you use either an Artist, Album, or Playlist context. Not sure why that is.
I've been trying to send data from my background page to a content script in my chrome extension. i can't seem to get it to work. I've read a few posts online but they're not really clear and seem quite high level. I've got managed to get the oauth working using the Oauth contacts example on the Chrome samples. The authentication works, i can get the data and display it in an html page by opening a new tab.
I want to send this data to a content script.
i'm having a lot of trouble with this and would really appreciate if someone could outline the explicit steps you need to follow to send data from a bg page to a content script or even better some code. Any takers?
the code for my background page is below (i've excluded the oauth paramaeters and other )
` function onContacts(text, xhr) {
contacts = [];
var data = JSON.parse(text);
var realdata = data.contacts;
for (var i = 0, person; person = realdata.person[i]; i++) {
var contact = {
'name' : person['name'],
'emails' : person['email']
};
contacts.push(contact); //this array "contacts" is read by the
contacts.html page when opened in a new tab
}
chrome.tabs.create({ 'url' : 'contacts.html'}); sending data to new tab
//chrome.tabs.executeScript(null,{file: "contentscript.js"});
may be this may work?
};
function getContacts() {
oauth.authorize(function() {
console.log("on authorize");
setIcon();
var url = "http://mydataurl/";
oauth.sendSignedRequest(url, onContacts);
});
};
chrome.browserAction.onClicked.addListener(getContacts);`
As i'm not quite sure how to get the data into the content script i wont bother posting the multiple versions of my failed content scripts. if I could just get a sample on how to request the "contacts" array from my content script, and how to send the data from the bg page, that would be great!
You have two options getting the data into the content script:
Using Tab API:
http://code.google.com/chrome/extensions/tabs.html#method-executeScript
Using Messaging:
http://code.google.com/chrome/extensions/messaging.html
Using Tab API
I usually use this approach when my extension will just be used once in a while, for example, setting the image as my desktop wallpaper. People don't set a wallpaper every second, or every minute. They usually do it once a week or even day. So I just inject a content script to that page. It is pretty easy to do so, you can either do it by file or code as explained in the documentation:
chrome.tabs.executeScript(tab.id, {file: 'inject_this.js'}, function() {
console.log('Successfully injected script into the page');
});
Using Messaging
If you are constantly need information from your websites, it would be better to use messaging. There are two types of messaging, Long-lived and Single-requests. Your content script (that you define in the manifest) can listen for extension requests:
chrome.extension.onRequest.addListener(function(request, sender, sendResponse) {
if (request.method == 'ping')
sendResponse({ data: 'pong' });
else
sendResponse({});
});
And your background page could send a message to that content script through messaging. As shown below, it will get the currently selected tab and send a request to that page.
chrome.tabs.getSelected(null, function(tab) {
chrome.tabs.sendRequest(tab.id, {method: 'ping'}, function(response) {
console.log(response.data);
});
});
Depends on your extension which method to use. I have used both. For an extension that will be used like every second, every time, I use Messaging (Long-Lived). For an extension that will not be used every time, then you don't need the content script in every single page, you can just use the Tab API executeScript because it will just inject a content script whenever you need to.
Hope that helps! Do a search on Stackoverflow, there are many answers to content scripts and background pages.
To follow on Mohamed's point.
If you want to pass data from the background script to the content script at initialisation, you can generate another simple script that contains only JSON and execute it beforehand.
Is that what you are looking for?
Otherwise, you will need to use the message passing interface
In the background page:
// Subscribe to onVisited event, so that injectSite() is called once at every pageload.
chrome.history.onVisited.addListener(injectSite);
function injectSite(data) {
// get custom configuration for this URL in the background page.
var site_conf = getSiteConfiguration(data.url);
if (site_conf)
{
chrome.tabs.executeScript({ code: 'PARAMS = ' + JSON.stringify(site_conf) + ';' });
chrome.tabs.executeScript({ file: 'site_injection.js' });
}
}
In the content script page (site_injection.js)
// read config directly from background
console.log(PARAM.whatever);
I thought I'd update this answer for current and future readers.
According to the Chrome API, chrome.extension.onRequest is "[d]eprecated since Chrome 33. Please use runtime.onMessage."
See this tutorial from the Chrome API for code examples on the messaging API.
Also, there are similar (newer) SO posts, such as this one, which are more relevant for the time being.