Coffeescript evaluates only once
ruby-on-rails,checkbox,coffeescript
Here you go, I hope that this is what you are looking for: boxes = $('#checkboxlist [type=checkbox]') selectAll = $('.selectall') toggleCheckboxes = -> if $(this).is ':checked' then boxes.prop "checked", true else boxes.prop "checked", false selectAll.on 'click', toggleCheckboxes Fiddle You should change attr() to prop(). Nothing special happening here, we have...
Write Ajax function in Coffeescript?
javascript,jquery,ajax,coffeescript
$ -> download_to_textbox = (url, el) -> $.get url, null, ((data) -> el.val data return ), 'text' download_to_textbox 'http://code.jquery.com/jquery-latest.min.js', $ 'textarea' $("textarea").click -> $(this).select() ...
AngularJS - Form scope binding in ng-include templates
angularjs,forms,coffeescript,jade,angularjs-ng-include
A plunkr would be nice to actually test your code, but I noticed a typo in your example code: ng-model: 'data.funding_opportunity.details', should be ng-model='data.funding_opportunity.details', Check if it works by correcting the typo and otherwise please provide a working example...
Reactjs best strategy to define a variable for render method
javascript,coffeescript,reactjs
This solution is better, in my opinion: @AuthPanel = React.createClass getAuthComponent: -> if @props.uiState.auth_panel?.signed_in return <SignOutForm uiState={@props.uiState} socket={@props.socket} /> else return <SignInForm uiState={@props.uiState} socket={@props.socket} /> render: -> <div className="navbar-collapse"> {@authComponent()} </div> I've found it there: https://github.com/planningcenter/react-patterns#sub-render...
ECMA 6 postfix condition use-cases
javascript,coffeescript,ecmascript-6
You got it wrong. Postfix conditional won't be a part of ES6, that's a feature of CoffeeScript. In presentation they are mentioned in What's missing? [from ES6 that is present in CoffeeScript] section. Also there is no is operator in JavaScript, neither it is planned for ES6/ES7.
Share two instances between other classes
It sounds to me as though one and two shouldn't be classes at all, just single objects: one = { data: "I'm one", method: () -> # do something # if needed, you can use two here } two = { data: "I'm two", method: () -> # do something...
Why does Codepen.io not show a thumbnail / preview for this pen?
javascript,jquery,coffeescript
Perhaps a loop with too many iterations causes the preview to hang This help article may apply: Turn Off JavaScript in Previews "On any page that displays a grid of Pens as live previews… This can be useful if you…accidentally create a Pen with JavaScript that is taking to long...
Rails 3 show/hide div on edit
Try this $('#event_requires_registration').is ':checked' Here is the whole thing for context sake: jQuery -> if $("#event_requires_registration").is ':checked' $("#event_evaluator_id").show() else $("#event_evaluator_id").hide() $('#event_requires_registration').change -> $('#event_evaluator_id').toggle @checked return ...
What's this Coffescript use of then?
Of course ... It calls the newcard.save().then function - thanks @rightfold - which is in the Angular.js promises api. Not immediately obvious out of context of that api which BTW is nicely explained here.
How do I set a jQuery selector in coffeescript using a variable?
javascript,jquery,ruby-on-rails,coffeescript
Whats happening in your code is that the keypress binding is applied on page load, so its only applied once while plan id is still 0. it doesnt get re-applied when plan_id is updated. I should note this seems like an odd thing to be doing, but you need to...
How to combine js lines into one?
Although what @sergio gave you is the correct answer and what you wanted, it's probably the wrong thing to do (though his answer is not at fault, its the question that is off). Setting element inline styles in JavaScript for effects is just not a very good practice. It has...
Coffeescript and ReactJS documentation
Finally, it seems that nothing exists. Thus I built one very naive implementation here. https://github.com/kursion/broffeact...
Test for Apple Push Notification
node.js,coffeescript,mongoose,apple-push-notifications
In many situations, while writing tests, it is either impossible or simply too dangerous to verify that an action has really taken place (i.e. a push notification has been delivered). Imagine writing a unit test for the rm command where you would like to ensure that doing rm -rf /...
Extend Coffeescript subclass function from parent in marionette
javascript,backbone.js,coffeescript,marionette
In Backbone, when you inherit from another class, Backbone will give the subclass a __super__ property (double underscore at both ends) which is the prototype of the parent class. So from within your Views.NewUser class, you can get the prototype via View.NewUser.__super__. Then, you can call templateHelpers on that object....
React.js implement UI effects after mounting
javascript,dom,coffeescript,reactjs,react-jsx
To integrate with a non-React DOM library, as @WiredPrairie said, you'll need to utilize componentDidMount. However, you can encapsulate that logic in a custom component, so you only have to do it once. For example, you used the code: componentDidMount: -> phoneInput = $(React.findDOMNode(@refs.phone)) phoneInput.bfhphone(phoneInput.data()) Imagine you had several such...
Coffeescript incorrect scope of @ when passing method as callback
Why not use the fat arrow for the functions belonging to the class, thus binding them correctly to the context of the class (and it's instances) - this is more how it is intended to work. module.exports = class InviteCreateSocket extends AbstractSocket register: () => @socket.on 'invite:create', @create return create:...
Can I add an else to a simplified if statement?
You have to use if...then if you want to use an else: winner = if pick in [47, 92, 13] then yes else no However, you can still do multi-line ifs: if pick in [47, 92, 13] winner = true else winner = false Also, note that the in operator...
how to use js.coffee file in rails 4
jquery,ruby-on-rails,ruby-on-rails-4,coffeescript
You can actually rename product.js.coffee file to product.js. Just include the product.js file in application.js Whether the file .js extension or js.coffee extension, Rails uglifier compiles and mififies the file to js file. So, If you write coffe script code, then it will be compiled to javascript file. http://guides.rubyonrails.org/asset_pipeline.html#javascript-compression...
Rails submit_tag form validation
So this feels a little busy, but it works. Feel free to make suggestions... jQuery -> $group = $('.form-group.registration_form') if $group.length $(".location").hide() $(".location-section-link").hide() $(".submit_register").click -> if validateForm() == false return false else if validateEmail($("#email").val()) == false alert('Please enter a valid email address') return false else $(".location").show() $(".location-section-link").show() $(".registration_form").hide() #validate email...
jstree in complex environment & coffee not showing any icons nor outline
Did you include the CSS theme on your page? It is listed as 2) here: http://www.jstree.com/ (Overview tab) <link rel="stylesheet" href="dist/themes/default/style.min.css" /> or <link rel="stylesheet" href="dist/themes/default-dark/style.min.css" /> EDIT: Based on the comments - if you want to use the dark theme, you need to both include the CSS and configure...
Sort array of objects in javascript with user input
javascript,arrays,angularjs,sorting,coffeescript
You can use orderBy with custom comparer, something like in next sample. Here on top would be object where name started with entered text angular.module('app', []) .controller('ctrl', function($scope, $filter) { $scope.arr = [{ "id": 1, "name": "android", "taggings_count": 5, "category": null }, { "id": 2, "name": "ruby", "taggings_count": 7, "category":...
Access class instance from a function passed into a React component and triggered there
javascript,backbone.js,coffeescript,reactjs
Using CoffeeScript, you just need to use a fat arrow function to automatically bind the FoodView::doSomething method to the instance. See also Bound functions. class FoodView extends Backbone.View doSomething: (e) => // `@` refers to the FoodView instance which is equivalent to class FoodView extends Backbone.View constructor: -> @doSomething =...
How do I automatically compile Coffeescript using Typesafe?
scala,playframework,coffeescript,typesafe-activator
I think the root cause might be related to the activator UI running Play in prod mode vs develop mode. This question is similar: How to run play project in dev mode with Typesafe Activator UI According to Play CoffeeScript Page CoffeeScript sources are compiled automatically during an assets command,...
Is there a way to concatenate JS and CoffeeScript files using Harp server?
I ended up customizing the terraform module, writing a preprocessor called man. Here is the diff from Harp: https://github.com/sintaxi/terraform/compare/master...thesmart:master...
Theoretical Coffeescript Switch Statement Conundrum
javascript,coffeescript,switch-statement,theory
I wouldn't call this an issue, because it works as expected :-) For the reason, I can only guess (maybe there are some comments in the compiler). It is most likely that they needed to cast all of these expressions to boolean values - they want it to work like...
Framer.js: how to get tap coordinates
Check out your own answer to the question. I've since then forked it and made changes so that taps on a computer or taps on a mobile device are recognized separately. https://github.com/carignanboy1/Material-Design-Interactions/tree/improved-touch touchEvent = Events.touchEvent(event) if Utils.isPhone() || Utils.isTablet() tX = touchEvent.clientX - layer.x tY = touchEvent.clientY - layer.y else...
Socket.io server in the browser
javascript,coffeescript,socket.io
It seems there is no way to run websocket server in the browser now.
Bluebird nested promises with each/spread
javascript,coffeescript,mongoose,promise,bluebird
Looks like bluebird's .each doesn't go well with .spread Yes indeed. each does return a promise for an array, if you want to use that array just use then: Promise.each [1..3], (number) -> opts = getOpts(number) Model.countAsync(opts).then (count) -> "the count is #{count}" .then (args) -> console.log JSON.stringify args...
Rails Best_in_place ajax:success not being recognized
ruby-on-rails,ajax,coffeescript,best-in-place
The issue is resolved. The problem was not that ajax:success wasn't firing, it's that (for reasons still unknown) I had to read ajax:success at the table body level instead of the table cell in question. Apparently this is a somewhat common issue, where when adding new elements to the DOM...
How to map Visual Studio shortcut keys in Github Atom
visual-studio,coffeescript,atom-editor
Open the Settings panel by pressing ctrl-, on windows cmd-, on mac and select the Keybindings tab. It will show you all the keybindings currently in use. You can also open the keybinding resolver using ctrl-. and press ctrl-k and see what keybinding it displays. To assign custom keybindings, go...
require (browserify) not working correctly when assigned (empty object), but works when inline
javascript,coffeescript,reactjs,browserify
Usually when you get an empty object from a require call, it's because you have circular dependencies. So you require A, which requires B, which requires C, which requires A. In that case C will get an empty object representing A, because A hasn't finished exporting its functions/objects yet and...
How to export a function from a module to another in coffeesricpt?
This: define (require) -> doSomething(a, b, c) -> "#{a}?#{b}&#{c}" isn't a function definition. That is really this in disguise: define (require) -> return doSomething(a, b, c)( -> "#{a}?#{b}&#{c}") so your module is trying to call the doSomething function and then call what it returns as another function which takes a...
locating path of a file in meteorjs
javascript,node.js,meteor,coffeescript,npm
if the file should be checked in This is the easy case - just place the file in your private directory and access it with the assets api. For more examples, see my blog post on exactly this subject. if the file should exist somewhere else on the server Use...
How to bind response of Ajax request to Model in EmberJs?
javascript,ruby-on-rails,ember.js,coffeescript,emblem.js
So, here is what I did to achieve it, I made a function in controller to make it available in emblem template for records to loop over it. And in that function called @get('model') to get all the records from Ember Data Model. (Which I was doing with 'controller' in...
Get variable of a class out of the scope with coffeescript
If the API you're after is this validator = new Validator() validator.errors.all() then place the errors object within the constructor and also change errors: first: -> to errors = first: -> Otherwise, just change errors: first: -> to errors: -> first: -> making the API look like this validator.errors().all()...
PyCharm coffee filewatcher
So i got the desired result by this macros: $FileParentDir(coffee)$/js/$FileDirPathFromParent(coffee)$ ...
Rails: redirect_to:back not redirecting in spite of showing correct logs
javascript,ruby-on-rails,ruby,angularjs,coffeescript
Your problem is that your are redirecting only the XHR request made by javascript -- the page shown to the user remains unaffected. To look at this in more detail, when your form is submitted, you trigger some code. This code makes an HTTP post to the server. The server...
Angular directive: return object from collection
javascript,angularjs,angularjs-directive,coffeescript
You should use require: 'ngModel' to inject the model attached to the element or its parent element on which the directive is bound to. Here is a demo.
Rails 4 jQuery, javascript and coffee scripts not working
javascript,jquery,ruby-on-rails,ruby,coffeescript
To resolve this issue I created a blank app with just a 'welcome' controller, containing only the jQuery test script, which worked fine. Working backwards from the differences in the trees from the naked application, I found that another developer had generated an empty coffeescript file: app/assets/javascript/application.coffee I removed this...
Websocket establish bulletproof connection
javascript,firefox,websocket,coffeescript
Its not actually throwing an Error, the program execution continues. Its simply logging the error (asynchronously) to the console. To handle connection failures, you can bind to the sockets onerror event. Something like this could work: function establishWSConnection(url) { return new Promise(function(res, rej) { var ws = new WebSocket(url); ws.onerror...
Set Session with usernames value
Your helper is running before your user has fully logged in. You can avoid the error by adding a guard like so: Template.dashboard.helpers 'setUsernameToSession': -> Session.set 'username', Meteor.user()?.username However, you really shouldn't be doing this in the first place because helpers should be side-effect free - see the 'overworked helpers'...
setInterval() keeps Node.js process running
javascript,node.js,coffeescript
What I want to do is to tell Node.js that this setInterval in not important, you can terminate it if everything else is done. How can I achieve that? You are looking for the unref method, which "will allow you to create a timer that is active but if...
D3.js ( in Coffeescript) show data on click
javascript,d3.js,coffeescript,data-visualization
Even though I'm not completely sure of your code I think this should work: updateActive = (id) -> node.classed("bubble-selected", (d) -> id == idValue(d)) if id for x in data when idValue(x) is id d3.select("#comment").html(commentValue(x)) else d3.select("#comment").html("<h3>Click on a bubble to read its comment.</h3>") Here data is what you supply...
How to access a variable across CoffeeScript functions?
javascript,coffeescript,global-variables
You simply need to declare somecount in a scope that the other functions are also in: somecount = null foo = -> alert somecount bar = -> alert somecount -> someCount = 123 foo() bar() ...
Can't call fetch directly in Backbone model listenTo
javascript,backbone.js,coffeescript
The handler for each type of event is passed a certain set of arguments. The Catalog of Events has this to say about a "change" event: "change" (model, options) — when a model's attributes have changed. So if you say this: this.listenTo(members, 'change', this.fetch) then fetch will be called like...
angularjs calculate expression and assign to model
javascript,angularjs,coffeescript
Here's how I managed to save the results of the calculation. $scope.saveAll = -> payslips = [] angular.forEach $scope.employments, (employment) -> payslip = employment.payslip payslip.gross_pay = ..........****calculation****....... payslips.push(payslip) Api.Batch.save(payslips) ...
Object literal multiple assignment in CoffeeScript
javascript,json,node.js,coffeescript
This is known as Destructuring Assignment. To make extracting values from complex arrays and objects more convenient, CoffeeScript implements ECMAScript Harmony's proposed destructuring assignment syntax. When you assign an array or object literal to a value, CoffeeScript breaks up and matches both sides against each other, assigning the values on...
One of two animations doesn't work on page load jQuery
If you want to animate it, either up or down then have down because up have it hidden so you will not be able to see it. Try this: $("#welcome").slideDown(1000); $("#apples").slideDown(1050); ...
CoffeeScript: calculate parse tree (like coffee -n) in a program
Just look in the source: the -n flag invokes (require 'coffee-script).nodes. The result is a syntax tree which corresponds to grammar.coffee and would be interpreted with nodes.coffee. So this: (require 'coffee-script').nodes 'square = (n)->n*n' Will give you a syntax tree. Before you print it, you could use its toString method...
Backbone.Deferred.Model: Why the unittest is not run?
backbone.js,coffeescript,phantomjs,mocha,chai
Your test case should be defined using the it function instead of describe (which is used to group tests) define (require) -> Data = require 'model/Data' describe 'dataurl', -> it 'No change', -> data = new Data id: '123', name: 'Dummy', data_url: 'https://m/a.png' expect(data.dataUrl()).to.equal('https://m/a.png') I have created this jdfiddle so...
Jasmine spyOn with multiple returns
javascript,angularjs,coffeescript,jasmine
With spyOn you can return mocked value and set it dynamically like in following code it 'should place the component as last object in the form', -> mockedValue = null spyOn(window, 'prompt').and.returnValue(mockedValue) mockedValue = 'test' builder.addFormObject 'default', {component: 'test'} mockedValue = 'test2' builder.addFormObject 'default', {component: 'test2'} expect(builder.forms['default'][0].name).toEqual('test') ...
How to test if class instance is instance of class that it extends?
class A class B extends A b = new B console.log "b is an instance of extended class " if b instanceof B # b is an instance of extended class console.log "b is an instance of extended class A because B extends a " if b instanceof A #...
Compile CoffeeScript to particular Javascript file
The -o option specifies the output directory. You sholud get the expected output if you remove the file name from this argument. To compile without the top-level function safety wrapper, use the -b option. Please read about the coffee command options here: http://coffeescript.org/#usage...
Post forms with coffescript/ ajax in play
ajax,forms,playframework,coffeescript
Thanks to Infinity and the new console error input I noticed that jsRoutes.controllers.Questions.create.ajax must be jsRoutes.controllers.Questions.create().ajax ...
python-like interpolation of string in coffeescript
python,string,coffeescript,string-interpolation
You can make all those entries a functions, then apply a dictionary to them with arguments: errorMessages= error404Find:-> "Hosts not found" error404FindByHost:-> "Host - #{@hostName} - not found" error400:-> "No host" alert errorMessages["error404FindByHost"].apply hostName:"host1" ...
ActionController::RoutingError Rails and Angular
javascript,ruby-on-rails,angularjs,coffeescript,restangular
I have solve this problem by renaming show.json.jbuilder to show.jbuilder and just use Restangular.one('products', 6862).get().then (c) -> ...
Rails updating morris.js data dynamically with coffeescript
ruby-on-rails,ajax,json,coffeescript,morris.js
@papirtiger is correct as to the controller code, but we ended up using JQuery's deferred.then() method to get this to work: coffeescript $.ajax( url: '/payment_schedules/cash_position.json' dataType: 'json' ).then (data) -> window.lineChart.setData(data) ...
In lodash.js, will it cache the result for `.value()` method?
javascript,coffeescript,underscore.js,lazy-evaluation,lodash
When you create a lodash wrapper, the wrapped value is stored within the wrapper. For example: var wrapper = _([ 1, 2, 3 ]); Here, [ 1, 2, 3 ] is stored in wrapper, and any chained operations added to the wrapper are passed this value. Chained operations are stored,...
Service property not updating consistently
javascript,jquery,ember.js,coffeescript
Turns out this problem goes away if I store the editorState on the controller, and look up this.controller.editorState in the route willTransition action handler. Thanks Grapho and locks on IRC ;)...
Angular: JSON filter in textarea produces a lot of slashes
javascript,json,angularjs,coffeescript
Just remove angular.toJson() because the value is already in json-format!
How to insert user_id to coffeescript file
javascript,ruby-on-rails,coffeescript
It is possible when the html is being generated. One way is to put in the bottom of your file js code which assigns user's id to globally available configuration and then read this id from this variable. for example in your erb <%= javascript_tag do %> window.Configuration = {};...
Chrome extension popup has a 2 - 3 second delay
javascript,performance,google-chrome-extension,coffeescript
So it turns out that the checkOnline() method was taking a wee while to return and blocked the rendering of the popup. This is the checkOnline() method, in Coffeescript: checkOnline = -> online = navigator.onLine return online The solution was to put this (and another method that relied on it)...
Coffescript doesnt point correct element
javascript,jquery,coffeescript
According to your html, .content_length is inside .field_with_errors, so I think you must first get the parent and then do next, like shown below: $(document).on 'keyup', '.content_length', -> $(this).parent().next('.char_counter').text(255 - $(this).val().length); ...
Add Extra Field_for in Nested form with Rails 4
javascript,ruby-on-rails,ruby-on-rails-4,coffeescript,nested-forms
You can use Cocoon. Cocoon makes it easier to handle nested forms.
JQuery attr() on div not returning value
When iterating over a jQuery object the element reference will be referring to the DOM element not a jQuery object so you can't access jQuery methods directly on it console.log "ALL", $('.contact') for div in $('.contact') console.log $(div) console.log $(div).attr('cid') Use .each() like console.log "ALL", $('.contact') $('.contact').each (i, div) ->...
Do not allow decimal numbers in textfield on form submittion in CoffeeScript
I would not allow the decimal . character: jQuery(document).ready(function () { jQuery(".no_decimal").keydown(function (e) { if (e.keyCode == 190) return false; }); }); The above in CoffeeScript: jQuery(document).ready -> jQuery('.no_decimal').keydown (e) -> if e.keyCode == 190 return false return return If you still insist on checking only on Form Submission, use...
what does “:” mean in this case in coffee script?
Appending mu is too short's answer (the user is absolutely correct that the second parameter commandNamecan be an object without the explicit braces {}) Atom's sourcecode: https://github.com/atom/atom/blob/v0.198.0/src/command-registry.coffee#L81 add: (target, commandName, callback) -> if typeof commandName is 'object' commands = commandName disposable = new CompositeDisposable for commandName, callback of commands disposable.add...
Unique triggering of window.requestAnimationFrame
Solved. I've forgotten to call window.requestAnimationFrame @update.bind(@) inside update function...
Dynamic className in cjsx
The hide property is set on @state, not on the component instance. if @state.hide then "hidden" ...
Coffeescript - assign if value is defined
Well, if it's a common case, you could write a function, but I only can come up with one that has the property you want to assign to in quotes. I don't think there is some syntactical sugar for that case (as you have stated, you don't want a null...
Waiting for Nested Promises to complete
You need to return promises from your then callbacks so that you can properly unnest them. So first return the item promise from that callback and get a promise that you can actually push to your promises array immediately in that loop: promises = [] @get('itemsInMyController').forEach (item) => promise =...
AngularJS - Losing controller scope within method
javascript,angularjs,coffeescript
I don't know if this qualifies as an answer. I was not actually calling $scope from within the controller method. If you $scope.book then $scope is available in the debugger.
Handlebars: return hash from helper
javascript,backbone.js,coffeescript,handlebars.js,handlebars
Handlebars will see this: {{show.key1}} as an attempt to access the key1 property of the show variable, it won't know that show in this case is supposed to refer to your show helper. This is just part of Handlebars syntax and I don't think there's anything you can do about...
get the progress with animate() JQUERY
javascript,jquery,coffeescript,jquery-animate
You can add a step function to the jquery animate, and inside calcualte how much time is left for the animation to finish: $(function () { var Now = 0; var animationDuration = 4000; var DesiredWidth = "200"; $(".test").animate({ width: DesiredWidth }, { easing:"linear", duration: animationDuration, //the argument in the...
How to initialize ng-model of input checkboxes in an ng-repeat loop
javascript,angularjs,checkbox,coffeescript
You can use ng-init to populate the array. I used $index rather than making up a bunch of data with id properties...adjust your code accordingly <input type="checkbox" ng-model="selectedMessages[$index]" ng-init="selectedMessages[$index]=selectedMessages[$index]||false" /> JS $scope.selectedMessages=[]; $scope.checkAll=function(){ var msgs = $scope.selectedMessages msgs.forEach(function(elem, idx){ msgs[idx] =true }) } DEMO...
Reactjs working with sockets: rerender when socket receive a message
javascript,websocket,coffeescript,reactjs
You shouldn't mutate @state directly, but instead use setState to enqueue a state update which, once performed, will cause the component to re-render. You should consider @state and its value as read-only most of the time. In your case, replace @state.signals.push { message: event.data, direction: 'in' } with @setState signals:...
Rails 4 - Layouts only showing half the time with javascript
javascript,ruby-on-rails,coffeescript
document.write will erase everything in the html before writing to it, that's why you only see the image. You should do something like this instead: placeholder = document.getElementById("placeholder") placeholder.innerHTML = '<img src="url' + number +'.jpg">' where placeholder is an existing element in the html with id of "placeholder"...
play a single beep (beep.js)
Forget everything I said ;) Inspired by your inquiry—and Sam’s old pull request—I’ve just completed a big ADSR push which includes support for Voice durations. So now with the latest Beep.js getting a quick “chiptune-y” chirp can be done like this: var voice = new Beep.Voice( '4D♭' ) .setOscillatorType( 'square'...
Show the subcategories of the chosen category in Rails 4
javascript,ruby-on-rails,ruby-on-rails-4,model-view-controller,coffeescript
Look in your console or development.log and you're going to see some message indicating that rails could not resolve update_sub_categories when your script fails. Wheras when calling that method with a new form, you'll see that rails is calling your_controller/your_action/update_sub_categories -- you can probably see where this is going now....
path to assets in Wordpress using jQuery
you're writing php code in a javascript document. id suggest in your header.php put this code <script>var templateDir = '<?php echo get_bloginfo('template_directory');?>';</script> ...
using underscore to total array elements with coffee script
javascript,coffeescript,underscore.js
There's no need to call _.reduce twice for this. The memo for reduce can be anything; in particular, it can be an object: summer = (memo, it) -> memo.goodsTotal += it.price memo.goodsVAT += it.vat memo totals = _(invoicedItems).reduce( summer, { goodsTotal: 0, goodsVAT: 0 } ) ...
async.mapLimit usage to make multiple requests
javascript,node.js,asynchronous,coffeescript
getCertificatesFromPage = (url, callback) -> You are not calling the callback in the getCertificatesFromPage function. Without that, the framework cannot know when the work is done....
How to require other CoffeeScripts files in main CoffeeScript with Laravel?
php,laravel,coffeescript,asset-pipeline,laravel-elixir
As there is no answer, I have to explore the solution by myself and here is the one. In Laravel-elixir version (2.3.6), there is a concatenation feature for coffeescript. You have to store coffeescript files in resources/assets/coffee directory. Then, the following script in gulpfile.js will generate a single app.js that...
Item not being pulled from array after navigating away from and back to page in Meteor app
I'm not completely sure why this is failing. It could be because you are storing user objects instead of ids, and their fields must be exactly equal in order for the update to work. I'd strongly recommend reworking your schema to use an array of ids instead of objects. It's...
Ajax polling in Coffeescript - whats falling out of scope and why?
javascript,jquery,coffeescript,polling
You have two errors: You're calling setInterval with loadWhenCached's return value instead of the loadWhenCached function itself. loadWhenCached is not bound to anything so this won't be what you expect it to be when setInterval calls it. The first one is easy to fix, pass the function reference rather than...
Angularjs service typerror undefined is not a function
javascript,angularjs,coffeescript
It looks like you are returning the function itself as service. Instead just do not return the function, service gets newed up by the injector just attach the method to its instance and return nothing. In your original case you would have to invoke it as CalculateService(student) Try: App.service 'CalculateService',...
Using after to clean up in mocha, problems with mongo
node.js,mongodb,coffeescript,mocha
Mongo doesn't have enough time to connect, Try using the done callback in after function: after (done) -> console.log "WHYYYY" mongo.open (error, db) => ... done() console.log "exit after" }) ...
Dynamically generate React component names
I couldn't get Crob's answer to work (though I appreciate the hash table idea), but it led me to find a solution - I just skipped the jsx step and used the compiled js: React.createElement(component, {tasks: this.props.tasks} ) So all in all: var Components = { 'something': require('./Component'), 'somethingElese': require('./Component2')...
Can I use CoffeeScript to write my Electron (Atom Shell) application?
They is no way to do it (atom doesn't ship with a coffeescript compiler), but you can use the watch option of coffeescript -w, --watch watch scripts for changes and rerun commands for example: coffee -w main.coffee in your case...
Gulp compiling SLIM/SASS/CoffeeScript on fly
coffeescript,sass,gulp,slim-lang
You need to put watchers on your files: gulp.task('watch', ['build','connectDist'], function() { gulp.watch(['./app/**/*.coffee', '!./app/bower_components/**'], ['minify-js']); gulp.watch(['./app/**/*.scss', '!./app/bower_components/**'], ['minify-css']); gulp.watch('./app/**/*.slim', ['copy-html-files']); }) If you start gulp watch, first the build and connectDist tasks are getting executing, preparing your build directory. Then three watchers look at your main input files, and call...
Clearing Session data
javascript,ruby-on-rails,ruby-on-rails-4,coffeescript
As mentioned in my comments to nesiseka i was not able to make it work the way he suggested so I went ahead with the following solution. Controller: def clear_cart session.delete(:product_quantity) if request.post? redirect_to shopping_index_path end end view: <%= simple_form_for(:place_order, :url => "#{}", html: {id: "place_order" }) do |f| %>...