UPDATED: Here is the fiddle: http://jsfiddle.net/janessaallen/c3b514wf/7/
Trying to figure out why the following will not get my jsplumb connections. I have a separate flowchart save javascript file with the following function for saving:
function saveFlowchart() {
var nodes = []
$(".window").each(function (idx, elem) {
var $elem = $(elem);
var endpoints = jsPlumb.getEndpoints($elem.attr('id'));
nodes.push({
id: $elem.attr('id'),
text: $elem.find($(".beneficiary")).text(),
positionX: parseInt($elem.css("left"), 10),
positionY: parseInt($elem.css("top"), 10)
});
});
var connections = [];
$.each(jsPlumb.getConnections(), function (idx, connection) {
connections.push({
connectionId: connection.id,
sourceId: connection.sourceId,
targetId: connection.targetId,
anchors: $.map(connection.endpoints, function (endpoint) {
return [[endpoint.anchor.x,
endpoint.anchor.y,
endpoint.anchor.orientation[0],
endpoint.anchor.orientation[1],
endpoint.anchor.offsets[0],
endpoint.anchor.offsets[1]]];
})
});
});
var flowChart = {};
flowChart.nodes = nodes;
flowChart.connections = connections;
}
The endpoints work fine and get pushed to the array, but none of the connections are discovered by jsPlumb.getConnections.
An instance of jsPlumb is created to create connections/makeSources/makeTargets, rather than using the global variable jsPlumb itself.
If an instance is used to create connections, then it has to be queried not the jsPlumb global variable.
I've updated the fiddle to save a reference to instance & used the instance to getAllConnections.
Updated fiddle http://jsfiddle.net/c3b514wf/8/
Related
I am trying to load a .csv file into crossfilter for further use it with dc.js and d3. However, if the ndx = crossfilter(data_) is not inside d3.csv(..., it does not work. Is it possible to load data using d3 inside a global/outside variable (in this case ndx)?
var ndx;
private method(){
var data_;
d3.csv("samples.csv", function(data){
var format = d3.timeParse("%m-%y");
data.forEach(function(d: any) {
d.date = format(d.date);
});
data_ = d3.csvParse(data);
});
ndx = crossfilter(data_);
}
How can I load it into crossfilter?
Am I obligated to use crossfilter inside the d3.csv(.. call?
Solution:
I made my .csv became a .json and I loaded it 'synchronously'. Observe below.
var ndx;
private method(){
var data_ = (function() {
var json: any = null;
$.ajax({
'async': false,
'global': false,
'url': "samples.json",
'dataType': "json",
'success': function (data:any) {
json = data;
}
});
return json;
})();
ndx = crossfilter(data_);
}
Observe:
'async': false
This happens because the callback function is executed asynchronously, once the data is returned. This means that if you put the charting code outside of the callback, you are going to get the empty array that you defined because no data has been returned yet.
I wrote some backend code for a Parse.com mobile app a couple of years ago, and have just been asked to add a feature. However, I found that after a small tweak the code wouldn't succeed. So, I rolled back to the working copy, downloaded, then deployed that back and it wouldn't work either! I wonder if this is a change in the Parse software?
The code is failing at the save method as all the logs are fine until then. The log for the error case shows 'No message provided'. If I don't use the message attribute it just shows '{}', so I presume it's empty. I have put the promise resolution in the error case to stop the job timing out while I debug. One thing I have never understood is why I have to make two Seed objects and piggy-back off one to save correctly. If I did a.save(null,...) it wouldn't work.
Any help would be fantastic. Thanks!
PS: Apologies for the indenting below - it is correct in my file.
function flush() {
//Clear the previous records from the class.
var Seed = Parse.Object.extend("Seeds");
var _ = require("underscore");
var arr = [];
var query = new Parse.Query(Seed);
return query.find().then(function(oldSeeds) {
_.each(oldSeeds, function(oldSeed) {
arr.push(oldSeed.destroy());
});
return Parse.Promise.when(arr);
});
}
Parse.Cloud.job("fetchjson", function(request, status) {
var url = 'someurl';
flush().then(function() { Parse.Cloud.httpRequest({url: url}).then(function(httpResponse){
var Seed = Parse.Object.extend("Seeds");
var jsonobj = JSON.parse(httpResponse.text);
var _ = require("underscore");
var results = [];
// do NOT iterate arrays with `for... in loops`
_.each(jsonobj.seeds, function(s) {
var p = new Parse.Promise();
results.push(p); // Needs to be done here or when() will execute immediately with no promises.
var seed = new Seed();
var a = new Seed(s);
var image_url = a.get("image")
//Get the JSON.
Parse.Cloud.httpRequest({url: image_url}).then(function(response) {
console.log("Fetching image at URL: " + image_url);
//Create a new image object and save, passing ref through promise.
var file = new Parse.File('thumb.jpg', { base64: response.buffer.toString('base64', 0, response.buffer.length) });
return file.save();
}).then(function(thumb) {
console.log("Attaching thumb to object");
//Set image ref as object attribute.
a.set("imageFile", thumb);
console.log("Parsing views into viewsint");
//Save decimal string as int into another attribute.
a.set("viewsInt", parseInt(a.get("views")));
console.log("Parsing description into descriptionarray");
//Save string as array into another attribute.
var dar = new Array(1);
//dar[0] = a.get("description")
a.set("descriptionarray", [a.get("description")]);
}, function(error) {
console.log("Error occurred :(");
}).then(function(){
console.log("Saving object");
//Save the object and resolve the promise so we can stop.
seed.save(a,{
success: function(successData){
console.log(successData);
p.resolve(successData);
},
error: function(error){
console.log(error.message);
p.resolve(error);
}
});
});
});
// .when waits for all promises to be resolved. This is async baby!
Parse.Promise.when(results).then(function(data){
console.log("All objects saved");
status.success("Updated Succesfully");
});
}, function(error) {
//Oh noes :'(
console.error('Request failed with response code ' + httpResponse.status);
status.error("Update Failed");
});
});
});
I changed your code a bit and put some comments to explain:
// DEFINE THESE ON THE TOP. NO NEED TO REPEAT.
var _ = require("underscore");
var Seed = Parse.Object.extend("Seeds");
function flush() {
//Clear the previous records from the class.
var arr = [];
var query = new Parse.Query(Seed);
return query.find().then(function(oldSeeds) {
_.each(oldSeeds, function(oldSeed) {
arr.push(oldSeed.destroy());
});
return Parse.Promise.when(arr);
});
}
Parse.Cloud.job("fetchjson", function(request, status) {
var url = 'someurl';
flush().then(function() {
Parse.Cloud.httpRequest({url: url}).then(function(httpResponse){
var jsonobj = JSON.parse(httpResponse.text);
var results = [];
_.each(jsonobj.seeds, function(s) {
// ONE SEED OBJECT WITH INITIAL SET OF DATA FROM JSON
var seed = new Seed(s);
var image_url = seed.get("image")
// A SERIAL PROMISE FOR EACH SEED
var promise = Parse.Cloud.httpRequest({url: image_url}).then(function(response) {
console.log("Fetching image at URL: " + image_url);
//Create a new image object and save, passing ref through promise.
var file = new Parse.File('thumb.jpg', { base64: response.buffer.toString('base64', 0, response.buffer.length) });
return file.save();
}).then(function(thumb) {
// SETTING MORE PROPERTIES
//Set image ref as object attribute.
console.log("Attaching thumb to object");
seed.set("imageFile", thumb);
//Save decimal string as int into another attribute.
console.log("Parsing views into viewsint");
seed.set("viewsInt", parseInt(seed.get("views")));
//Save string as array into another attribute.
console.log("Parsing description into descriptionarray");
seed.set("descriptionarray", [seed.get("description")]);
// SAVING THE OBJECT
console.log("Saving object");
return seed.save();
});
// PUSH THIS PROMISE TO THE ARRAY TO PERFORM IN PARALLEL
results.push(promise);
});
Parse.Promise.when(results).then(function(data){
console.log("All objects saved");
status.success("Updated Succesfully");
});
}, function(error) {
console.error('Request failed with response code ' + httpResponse.status);
status.error("Update Failed");
});
});
});
Thanks knshn. I had refactored the code a lot since that version (including several of the changes you made), but I had posted the version that was identical to that which was working fine before. Your changes let me see the right error. For some reason doing the simple single object implementation didn't work for me originally, hence the nasty workaround. It works now though.
I have now found the culprit - the Seed class had an attribute called 'id'. With the old version this worked fine, but when I deployed that code now it gave an error 101: 'object not found for update'. This must be because the new Parse code is mixing that up with the internal objectId and getting confused that the id is different to what it expects. I wonder how that could still work with the rollback though. Perhaps the at version was tagged to use the older Parse code.
My fix was to use a different name for the id - 'seed_id'.
I am getting a list of options for a select from a server and populating an observableArray. Then I would like to set the selected item to a predefined value. I have a very simple jsFiddle that emulates pulling data from a server with a button click.
http://jsfiddle.net/JonathanN/hev1rqeu/
Here's the Javascript with the basic attempt:
(function() {
var vm = (function() {
var self = this;
self.array = ko.observableArray([]);
self.selectedValue = ko.observable();
self.useSetTimeout = ko.observable(false);
self.array.subscribe(function(newValue) {
self.selectedValue('b');
});
self.populate = function() {
self.array(['a','b','c']);
};
}());
ko.applyBindings(vm);
}());
And here's my workaround, which replaces "self.selectedValue('b');":
var waitForSelectToPopulate = function() {
self.selectedValue('b');
if(self.selectedValue() != 'b') {
setTimeout(waitForSelectToPopulate, 10);
}
};
waitForSelectToPopulate();
I am not very fond of this as a workaround. It seems like there should be a reasonable way to handle this, but just setting the value on subscribe trigger doesn't seem to work.
You need optionsAfterRender. Here's a fiddle:
http://jsfiddle.net/sifriday/hev1rqeu/4/
HTML -
<select data-bind="options: array, value: selectedValue, optionsAfterRender: setVal">
JS addition -
self.setVal = function() {
self.selectedValue('b');
}
Docs - http://knockoutjs.com/documentation/options-binding.html - and scroll down to Note 2
Once the populate event has gone and got the json and placed it into your array, why not just set the value right after? as soon as you set the data inside of self.array it will update.
(function() {
var vm = (function() {
var self = this;
self.array = ko.observableArray([]);
self.selectedValue = ko.observable();
self.populate = function() {
// magical assmagic goes and get's json, and converts it to ['a','b','c']
self.array(['a','b','c']); // dropdown is now populated
self.selectedValue('c'); // therefore we can set it to a valid value
};
}());
ko.applyBindings(vm);
}());
see the following:
http://jsfiddle.net/hev1rqeu/5/
I am trying to sort based on a function. I am currently doing the following, and it works.
var _criteria = ... some search criteria
var _pageNumber = ... the page num I want to see
var _nPerPage = ... the number of documents per page
var _sort = {};
_sort.name = ... the column name I am sorting on
_sort.order = ... asc or desc sort
Collection.find(_criteria)
.skip((_pageNumber-1)*_nPerPage)
.limit(_nPerPage)
.sort(_sort.name,_sort.order)
.execFind(function (err, docs) {
...
});
Now I would like to sort based on some function that takes in a user input:
var sortFunc = function(x){ return (x - doc.score); };
// where doc.score is an attribute of the document I am searching on
// and x is a user provided value
and I can't find a way to do this. I tried to eval this function as follows:
var mongoose = require('mongoose');
var mdb = mongoose.connect(uri);
var myfunc = function(x){ return x; };
mdb.connection.db.eval( myfunc, "asdf", function (err, retval) {
console.log('err: '+err);
console.log('retval: '+retval);
});
but I get the following error:
err: Error: eval failed: db assertion failure
retval: null
Any help on this would be awesome.
Thanks a lot
I think you need do like this:
var mongoose = require('mongoose');
mongoose.connect(uri);
mongoose.connection.on("open", function(err){
mongoose.connection.db.eval("function(x){ return x; }", "asdf", function (err, retval) {
console.log('err: '+err);
console.log('retval: '+retval);
});
});
This can work on my PC. You must ensure that the connection is available.
i want to do the following:
I have a store which gets JSON data from the server. The JSON looks like this:
{"id":"1","name":"Name1","address":"exampleaddress1","lat":"48.366268","lng":"10.892320","distance":"0"},{...}]
My model and store:
Ext.regModel('Filiale', {
fields: ['id', 'name', 'address', 'distance', 'lat', 'lng'],
});
var ListStore = new Ext.data.Store({
model: 'Filiale',
id: 'ListStore',
autoLoad: false,
fields:['name', 'address', 'distance'],
proxy: {
type: 'ajax',
url : 'http://example.com/getSomeJson.php',
reader: {
type: 'json'
}
},
listeners: {
load: function(){
ListStore.each(function(store){
var newData = getDistance(store.data); // this function calculates the distance from currentLocation to the received address
console.log(newData); // i see a object in the console, with the correct calculated distance
console.log(newData.distance); // this shows the old distance which is set to '0' in the databse
//at this point i want to update the received records with the new distance, but the list always shows the old distance
});
}
}
});
I don't understand, why the two console.logs show different values for the distance. Can anyone explain that to me ?
My List:
var listPanel = new Ext.List({
title: 'ListStore',
store: ListStore,
id: 'addresslist',
itemTpl: '<div class="contact">{name}, {address}, {distance}</div>',
rendered: false,
listeners: {
beforerender: function(){
ListStore.load();
}
}
});
my function to calculate the distance:
var getDistance = function(dataset){
navigator.geolocation.getCurrentPosition(function(position){
var start = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
//add current position marker to map
var marker = new google.maps.Marker({
map: mapPanel.map,
position: start
});
var end = new google.maps.LatLng(dataset.lat, dataset.lng);
var service = new google.maps.DirectionsService();
var request = {
origin: start,
destination: end,
travelMode: google.maps.DirectionsTravelMode.DRIVING
};
service.route(request, function(result, status){
if (status == google.maps.DirectionsStatus.OK) {
dataset.distance = result.routes[0].legs[0].distance.value / 1000;
}
});
});
return dataset;
};
And as i said, the distance is correctly calculated and the objects gets returned... but i'm unable to update the records in the store or the list...
I don't understand, why the two console.logs show different values for the distance. Can anyone explain that to me ?
Are You using Chrome? Chrome console sometimes has problems with up-to-date console data
And as i said, the distance is correctly calculated and the objects gets returned... but i'm unable to update the records in the store or the list...
Records in the store in Your script are always up-to-date - in JS obejcts are passed by reference, so You don't even have to return newData - store object will be updated automatically
Just after adding some values to store type:
listpanel.refresh()
to load current store to list