Using Mongoose query outside exec function - express

I am trying to use the result of a query outside the exec function, but I can't seem to get it working
This is my function in Express
getUrlsFromDatabase = function(){
blog.find()
.select('url')
.exec(function(err,docs){
var sitemap = [];
for(var i=0; i<docs.length; i++) {
sitemap.push(docs[i].url);
}
return sitemap
})
console.log("Trying to get result docs here")
}

Try using async/await
getUrlsFromDatabase = async function(){
var blogs = await blog.find().select('url')
var sitemap = [];
for(var i=0; i<docs.length; i++) {
sitemap.push(docs[i].url);
}
return sitemap
console.log("Trying to get result docs here")
}
Update:
Or just add a return to back some result from the function
getUrlsFromDatabase = function(){
return blog.find() // <- add return here
.select('url')
.exec(function(err,docs){
var sitemap = [];
for(var i=0; i<docs.length; i++) {
sitemap.push(docs[i].url);
}
return sitemap
})
console.log("Trying to get result docs here")
}
Or just save It in a variable:
getUrlsFromDatabase = function(){
const result = blog.find() // <- add variable here
.select('url')
.exec(function(err,docs){
var sitemap = [];
for(var i=0; i<docs.length; i++) {
sitemap.push(docs[i].url);
}
return sitemap
})
return result // to return it outbound
}

Related

How to modify the feed parsing script to parse only in-stock products?

There is a script for parsing a trade feed, it pulls the specified parameters into google tables, pulls out all the products that are in the feed.
function main() {
getURLs();
pushToSheet();
}
function getURLs() {
var FeedXML = UrlFetchApp.fetch(FeedURL).getContentText();
var items = FeedXML.split('<item>');
var len = items.length;
for(var key = 0; key < len; key++){
var url_temp = items[key].split('<g:link>')[1];
if (typeof(url_temp) !== "undefined"){
var url = url_temp.split('</g:link>')[0];
}
var cat_temp = items[key].split('<g:product_type>')[1];
if(cat_temp !== undefined){
var cat = cat_temp.split('</g:product_type>')[0];
}
if(url !== undefined){
output.push([url, cat]);
}
}
}
function pushToSheet(){
var sheetURL = SpreadsheetApp.openByUrl(SPREADSHEET_URL);
var sheet2 = sheetURL.getSheetByName(SHEET_NAME);
sheet2.clearContents();
sheet2.appendRow(['URL', 'Custom label']); // Название столбцов в документе
sheet2.getRange(sheet2.getLastRow()+1, 1, output.length,
output[0].length).setValues(output);
}
My question is:
How to make the script pull only the url and the type of goods that are in stock?

QZ TRAY PRINITING ORDER NOT IN SEQ

I'm trying to print qz tray from javascript.
I have barcode with number in ascending order 1,2,3,4, 5 and so on.
I looping the seq correctly . but when printed out, it was not in order.
setTimeout("directPrint2()",1000);
function sleep(milliseconds) {
var start = new Date().getTime();
for (var i = 0; i < 1e7; i++) {
if ((new Date().getTime() - start) > milliseconds){
break;
}
}
}
function directPrint2(){
var data;
var xhttp;
var v_carton = "' || x_str_carton ||'";
var carton_arr = v_carton.split('','');
var v1 = "' ||
replace(x_zebra_printer_id, '\', '|') ||
'".replace(/\|/g,"\\");
if(v1 == ""){
alert("Please setup ZPL Printer");
}
else{
xhttp=new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
data = [ toNative(this.responseText) ];
printZPL(data, v1);
}
};
for (var j = 0; j < carton_arr.length; j++){
var url = "' || x_wms_url ||
'WWW_URL.direct_print_label?in_carton_no="+toValidStr(carton_arr[j]);
xhttp.open("GET", url, false);
xhttp.send();
sleep(5000);
}
}
};
',
'javascript'
What's missing from your example:
I do not see any looping logic in the example calling the printZPL function,
printZPL isn't a QZ Tray function and you're missing the code snippet which it calls. Usually this would be qz.print(config, data);.
Regardless of the missing information, the qz.print(...) API is ES6/Promise/A+ based meaning if you want to call qz.print multiple times in a row you need to use a Promise-compatible technique. (e.g. .then(...) syntax) between your print calls as explained in the Chaining Requests guide.
To avoid this, you can concatenate all ZPL data into one large data array. Be careful not to spool too much data at once.
If you know exactly how many jobs you'll be appending, you can hard-code the promise chain:
qz.websocket.connect()
.then(function() {
return qz.printers.find("zebra"); // Pass the printer name into the next Promise
})
.then(function(printer) {
var config = qz.configs.create(printer); // Create a default config for the found printer
var data = ['^XA^FO50,50^ADN,36,20^FDRAW ZPL EXAMPLE^FS^XZ']; // Raw ZPL
return qz.print(config, data);
})
.catch(function(e) { console.error(e); });
Finally, if you do NOT know in advanced how many calls to qz.print(...) you can use a Promise loop as explained in the Promise Loop guide.
function promiseLoop() {
var data = [
"^XA\n^FO50,50^ADN,36,20^FDPRINT 1 ^FS\n^XZ\n",
"^XA\n^FO50,50^ADN,36,20^FDPRINT 2 ^FS\n^XZ\n",
"^XA\n^FO50,50^ADN,36,20^FDPRINT 3 ^FS\n^XZ\n",
"^XA\n^FO50,50^ADN,36,20^FDPRINT 4 ^FS\n^XZ\n"
];
var configs = [
{ "printer": "ZDesigner LP2844-Z" },
{ "printer": "ZDesigner LP2844-Z" },
{ "printer": "ZDesigner LP2844-Z" },
{ "printer": "ZDesigner LP2844-Z" }
];
var chain = [];
for(var i = 0; i < data.length; i++) {
(function(i_) {
//setup this chain link
var link = function() {
return qz.printers.find(configs[i_].printer).then(function(found) {
return qz.print(qz.configs.create(found), [data[i_]]);
});
};
chain.push(link);
})(i);
//closure ensures this promise's concept of `i` doesn't change
}
//can be .connect or `Promise.resolve()`, etc
var firstLink = new RSVP.Promise(function(r, e) { r(); });
var lastLink = null;
chain.reduce(function(sequence, link) {
lastLink = sequence.then(link);
return lastLink;
}, firstLink);
//this will be the very last link in the chain
lastLink.catch(function(err) {
console.error(err);
});
}
Note: The Promise Loop is no longer needed in QZ Tray 2.1. Instead, since 2.1, an array of config objects and data arrays can be provided instead.

Looping throw links using PhantomJS

There is a problem. I have some urls. And there are a list of links on this urls, which I want to visit. Each of this links. There is no problem with looping throw urls, but problems with this links. Here is my code...
var urls = [];
var TEMPLATE = 'https://example.com/page/'
for (var i = 1; i > 0; i--) {
urls.push(TEMPLATE + i);
}
var page = require('webpage').create();
//Here is looping throw urls
function process(){
if (urls.length == 0){
phantom.exit();
} else{
url = urls.pop();
page = require('webpage').create();
page.open(url, onFinishedLoading);
}
}
function onFinishedLoading(status){
var links = page.evaluate(function() {
var arr = [];
//Here we are grab links inside urls
$('some.selector').each(function() {
arr.push( $('a', $(this)).attr("href"))
});
return arr;
});
//And this is just my tries to visit this links
link = links.pop();
//Just fine. Get the link
console.log(link);
parse(link);
setTimeout(function parse(link) {
page.open(link, function(status) {
var parsing = page.evaluate(function() {
return link + status;
});
//Don't work :(
console.log(parsing);
});
}, 1500);
page.release();
process();
// return links;
}
process();
Sorry for my silly question, i little know at phatom and JS.
Wish you can help me

YouTube in UIWebView only plays once

I have a UIWebView with some YouTube Videos embeded via the iframe code:
<iframe width="190" height="102" src="http://www.youtube.com/embed/...?showinfo=0" frameborder="0" allowfullscreen></iframe>
When it first loads it is possible to view each video exactly once. After viewing it the area is just black with white "Youtube" in it.
Any ideas? Of course reloading the UIWebView after watching a video fixes it, but I don't like this...
I did it! The following Javascript did the job:
<script>
VideoIDs = new Array(...some ids here...);
function getFrameID(id){
var elem = document.getElementById(id);
if (elem) {
if(/^iframe$/i.test(elem.tagName))
return id;
var elems = elem.getElementsByTagName("iframe");
if (!elems.length)
return null;
for (var i=0; i<elems.length; i++) {
if (/^https?:\/\/(?:www\.)?youtube(?:-nocookie)?\.com(\/|$)/i.test(elems[i].src))
break;
}
elem = elems[i];
if (elem.id)
return elem.id;
do {
id += "-frame";
} while (document.getElementById(id));
elem.id = id;
return id;
}
return null;
}
var YT_ready = (function(){
var onReady_funcs = [], api_isReady = false;
return function(func, b_before){
if (func === true) {
api_isReady = true;
for (var i=0; i<onReady_funcs.length; i++){
onReady_funcs.shift()();
}
} else if(typeof func == "function") {
if (api_isReady)
func();
else
onReady_funcs[b_before?"unshift":"push"](func);
}
}
})();
function onYouTubePlayerAPIReady() {
YT_ready(true)
}
(function(){
var s = document.createElement("script");
s.src = "http://www.youtube.com/player_api";
var before = document.getElementsByTagName("script")[0];
before.parentNode.insertBefore(s, before);
})();
var players = new Array();
YT_ready(function() {
for(index in VideoIDs) {
var frameID = getFrameID(VideoIDs[index]);
if (frameID) {
players[frameID] = new YT.Player(frameID, {
events: {
"onStateChange": stateChange
}
});
}
}
});
function youtube_parser(url){
var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/;
var match = url.match(regExp);
if (match&&match[7].length==11){
return match[7];
}
}
function stateChange(event) {
if(event.data == YT.PlayerState.ENDED){
document.location = 'callback:finished';
document.getElementById(youtube_parser(event.target.getVideoUrl())).contentWindow.location.reload(true);
}
}
</script>

google maps api v2 map.removeOverlay() marker array issue

To start off with, I would like to say that I have been looking on the internet for a really long time and have been unable to find the answer, hence my question here.
My latest school project is to create an admin page for adding articles to a database, the articles are connected to a point on a google map. The requirement for adding the point on the map is that the user is able to click the map once and the marker is produced, if the map is clicked a second time the first marker is moved to the second location. (this is what I am struggling with.)
The problem is, as the code is now, I get the error that markersArray is undefined. If I place the var markersArray = new Array; underneath the eventListener then I get an error that there is something wrong the main.js (googles file) and markersArray[0] is undefined in the second if.
By the way, I have to use google maps API v2, even though it is old.
<script type="text/javascript">
//<![CDATA[
var map;
var markers = new Array;
function load() {
if (GBrowserIsCompatible()) {
this.counter = 0;
this.map = new GMap2(document.getElementById("map"));
this.map.addControl(new GSmallMapControl());
this.map.addControl(new GMapTypeControl());
this.map.setCenter(new GLatLng(57.668911, 15.203247), 7);
GDownloadUrl("genxml.php", function(data) {
var xml = GXml.parse(data);
var Articles = xml.documentElement.getElementsByTagName("article");
for (var i = 0; i < Articles.length; i++) {
var id = Articles[i].getAttribute("id");
var title = Articles[i].getAttribute("title");
var text = Articles[i].getAttribute("text");
var searchWord = Articles[i].getAttribute("searchWord");
var point = new GLatLng(parseFloat(Articles[i].getAttribute("lat")),
parseFloat(Articles[i].getAttribute("lng")));
var article = createMarker(point, id, title, text);
this.map.addOverlay(article);
}
});
}
var myEventListener = GEvent.bind(this.map,"click", this, function(overlay, latlng) {
if (this.counter == 0) {
if (latlng) {
var marker = new GMarker(latlng);
latlng1 = latlng;
this.map.addOverlay(marker);
this.counter++;
markers.push(marker); //This is where I get the error that markersArray is undefined.
}
}
else if (this.counter == 1) {
if (latlng){
alert (markers[0]);
this.map.removeOverlay(markers[0]);
var markers = [];
this.map.addOverlay(marker);
this.counter++;
}
}
});
}
function createMarker(point, id, title, text) {
var article = new GMarker(point);
var html = "<b>" + title + "</b> <br/>"
GEvent.addListener(article, 'click', function() {
window.location = "article.php?id=" + id;
});
return article;
}
I solved the problem. I'm not exactly sure why it worked but this is what it looks like now:
var markersArray = [];
function load() {
if (GBrowserIsCompatible()) {
this.counter = 0;
this.map = new GMap2(document.getElementById("map"));
this.map.addControl(new GSmallMapControl());
this.map.addControl(new GMapTypeControl());
this.map.setCenter(new GLatLng(57.668911, 15.203247), 7);
GDownloadUrl("genxml.php", function(data) {
var xml = GXml.parse(data);
var Articles = xml.documentElement.getElementsByTagName("article");
for (var i = 0; i < Articles.length; i++) {
var id = Articles[i].getAttribute("id");
var title = Articles[i].getAttribute("title");
var text = Articles[i].getAttribute("text");
var searchWord = Articles[i].getAttribute("searchWord");
var type = Articles[i].getAttribute("type");
var point = new GLatLng(parseFloat(Articles[i].getAttribute("lat")),
parseFloat(Articles[i].getAttribute("lng")));
var article = createMarker(point, id, title, text);
this.map.addOverlay(article);
}
});
}
var myEventListener = GEvent.bind(this.map,"click", this, function(overlay, latlng) {
var marker = new GMarker(latlng);
if (this.counter == 0) {
if (latlng) {
latlng1 = latlng;
this.map.addOverlay(marker);
markersArray.push(marker);
this.counter++;
}
}
else if (this.counter == 1) {
if (latlng){
this.map.removeOverlay(markersArray[0]);
this.map.addOverlay(marker);
this.counter++;
}
}
});
}
function createMarker(point, id, title, text) {
var article = new GMarker(point);
var html = "<b>" + title + "</b> <br/>"
GEvent.addListener(article, 'click', function() {
window.location = "article.php?id=" + id;
});
return article;
}