CODEWITHSUNDEEP
javascriptruby-on-railsjsongoogle-maps
Felipe Marcon
Felipe Marcon

Reputation: 349

Ruby on Rails and JS - How get a object Json in Javascript?

I have a Json with some informations using Ruby on Rails (I generate this through a method in a controller):

pis: [
{
kilometer: 621,
category: "fare",
name: "Guaraçaí",
toll: "false",
lat: -21.0059,
lng: -51.1904,
icon: "/img/icon_fare_map.png",
pedagios: [ ]
},

And the following function get the Json (this show markers in my Google Maps):

function getAllPI(){
 $.get("/map_pis", function(data){
  $(data.pis).each(function(){

   // Adds a marker for each Json item
   addMarker(this);

   // Show all markers
   showMarkers();
  })
 });
}

I just want to add the marker and show it if my field 'toll' in Json is 'true'. If is 'false' I dont wanna show. How can I do that? I tried with: 

if (pis.toll == true ) {
 addMarker(this);
}

But that didn't work. I do not have much experience with Json.

Someone can help me? Thanks.

Upvotes: 0

Views: 190

Answers (2)

Francis Gauthier
Francis Gauthier

Reputation: 21

In your json, your toll value seems to be a string. Therefore doing 

pis.toll == true

will always be false, as "true" is not equal to true

Maybe this will work

pis.toll == "true"

Upvotes: 2

larz
larz

Reputation: 5766

You need to define a parameter for your .each block, which refers to the specific item in the array you're working with. Then you can check if the toll on that is true and if it is, add the marker. I'm not sure if this is the argument you wanted to pass to that, but I would guess item is what you need.

function getAllPI(){
 $.get("/map_pis", function(data){
  $(data.pis).each(function(item){

   // Adds a marker for each Json item
   if (item.toll) addMarker(item);

   // Show all markers
   showMarkers();
  })
 });
}

Upvotes: 1

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