javascript - updating the array that is being passed to highcharts in meteor app -


i'm using meteor build dashboard uses highcharts build charts. current set follows. page loads show drop down menu. when user clicks drop down menu, client.js queries database based on selection, pushes results few global arrays followed blaze.render of template has chart. chart uses global variables series data , xaxis categories. problem when user selects different option drop down, arrays should updated , chart re-rendered. noticed array not populated new values. instead new values appended array.

code below:

  template.districtdropdown.events({ 'change #selectdistrict' : function(event, template){   // productvalues2.length = 0;   // productusage2.length = 0;   // productfidelity2.length = 0;   // productnames2.length = 0;   event.preventdefault();   var selectedvalue = template.$("#selectdistrict").val();   console.log("you selected " + selectedvalue);   var filter = {     find: {       'school district' : selectedvalue     }   };    $(filter).ready(function() {     meteor.subscribe('aggbydistrict', filter, function() {       productusage2 = [], productvalues2 = [], productfidelity2 = [];       productnames2 = _.uniq(combineddata.find().map( function(doc) { return doc.product; }));       for(var = 0; < productnames2.length; i++) {         productvalues2.push(combineddata.find({'product' : productnames2[i]}).count());         productusage2.push(combineddata.find({'product' : productnames2[i], 'usage' : {$gt:0}}).count());         productfidelity2.push(combineddata.find({'product' : productnames2[i], 'fidelity' :1 }).count());       };       console.log(productnames2, productusage2, productvalues2, productfidelity2);       // renders highchart shows various aggs selected district       blaze.render(template.licensesdistributedbydistrict, $("#licensesbydistrictcharts")[0]);     });   }); }   });

if uncomment productvalues2.length = 0 chart gets empty arrays.

i know a horrible implementation, i'm trying learn how use meteor / highcharts.

it's appending values because you're not clearing out existing values.

// productvalues2.length = 0; // productusage2.length = 0; // productfidelity2.length = 0; // productnames2.length = 0;

the code above clears arrays


Comments

Post a Comment

Popular posts from this blog

get url and add instance to a model with prefilled foreign key :django admin -

Image
i have page in each contest shown in row. each row contains contest id , link other model names have foreign key contest. news model: class news(models.model): title = models.charfield(max_length=50, null=true) description = models.textfield() time = models.timefield( default= datetime.datetime.now().time()) contest = models.foreignkey(contest) i want use admin adding , changing these models. want when user clicks on 'news' has foreign key contest id=1, shows list of news value foreign key. use {% instance in instances %} <tr class="{% cycle 'row1' 'row2' %}"> <td>{{ instance.title }}</td> <td>{{ instance.starttime }}</td> <td>{{ instance.timespan }}</td> <td>{{ instance.date }}</td> <td><a href="/adm...
Read more

css - Make div keyboard-scrollable in jQuery Mobile? -

from can tell, although jquery-mobile-powered pages can contain divs overflow set scroll or auto, , these divs can scrolled one-screen bar or mouse wheel, cannot scrolled using arrow keys, page-up/page-down, or home/end. instead, official "page" div (with data-role="page") absorbs input. perhaps other divs can't acquire focus, i'm not sure. is there way around this? edit: jsfiddle of simple example: https://jsfiddle.net/qogz0shx/ <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script> <script src="https://ajax.googleapis.com/ajax/libs/jquerymobile/1.4.5/jquery.mobile.min.js"> </script> <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.css"/> <style> #outer { overflow:scroll; height: 50vh; width: 50vw; } #inner { height: 500vh; width: 500vw; } ...
Read more

ruby on rails - Seeing duplicate requests handled with Unicorn -

recently upgraded our ec2 instances c3.large in order boost more unicorn workers handle increased traffic our site. (6xworkers per machine - 2 ec2 instances). when did this, started seeing duplicate records being created! looks somehow, maybe 2 unicorn workers attempting process same request? in nginx logs see 1 [post] request particular rails controller - yet 2 records being created in database. i'm hitting kind of race condition issue - have no idea how debug this. doesn't happen time, when it's frustrating well. noticed 2 database records within 5 seconds of each other. (and yes disable button when user clicks submit button). unicorn 4.8.2 ruby 1.9.3 rails 3.2.14 any great! thanks! although may not fix problem, upgrade ruby 2.0.0. there blog mentioning idea upgrade ruby 2.0.0 if using unicorn. for example: https://www.digitalocean.com/community/articles/how-to-optimize-unicorn-workers-in-a-ruby-on-rails-app specifically: if using ruby 1.9, ...
Read more