将JavaScript变量传递给Rails控制器上的ruby以进一步发送api

Question

我将Google api地图作为index.html

<!DOCTYPE html>
<html>
<head>

<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
  html, body {
    height: 100%;
    margin: 0;
    padding: 0;
  }
  #map {
    height: 100%;
  }
</style>
</head>
<body>
<div id="map"></div>
<script>
  // Note: This example requires that you consent to location sharing when
  // prompted by your browser. If you see the error "The Geolocation service
  // failed.", it means you probably did not give permission for the browser to
  // locate you.

  function initMap() {
    var map = new google.maps.Map(document.getElementById('map'), {
      center: {lat: -34.397, lng: 150.644},
      zoom: 15
    });
    var infoWindow = new google.maps.InfoWindow({map: map});

    // Try HTML5 geolocation.
    if (navigator.geolocation) {
      navigator.geolocation.getCurrentPosition(function(position) {
        var pos = {
          lat: position.coords.latitude,
          lng: position.coords.longitude
        };

        infoWindow.setPosition(pos);
        infoWindow.setContent('Location found.');
        map.setCenter(pos);
      }, function() {
        handleLocationError(true, infoWindow, map.getCenter());
      });
    } else {
      // Browser doesn't support Geolocation
      handleLocationError(false, infoWindow, map.getCenter());
    }
  }

  function handleLocationError(browserHasGeolocation, infoWindow, pos) {
    infoWindow.setPosition(pos);
    infoWindow.setContent(browserHasGeolocation ?
                          'Error: The Geolocation service failed.' :
                          'Error: Your browser doesn\'t support geolocation.');
  }



    </script>
    <script async defer
src="https://maps.googleapis.com/maps/api   /js?key=AIzaSyBNvjq57_K8vPYRKETMN6bDogqCpRvBoA0&callback=initMap">
    </script>
    </body>
    </html>

我想在Rails控制器即产品控制器中使用var = pos在ruby中

require 'rubygems'

    require 'httparty'

    class ProductsController < ApplicationController



def index

    @results = HTTParty.get("https://api.uber.com          /v1/products?server_token=xyz&latitude=37.7759792&longitude=-122.41823").parsed_response

   respond_to do |format|
   format.json { render :json => JSON.parse(@results) }
   format.html { render "index.html.erb" }
   end
   end
   end

然后在api网址中传递单独的纬度和经度，以便它可以接受任何纬度和经度，而无需手动指定。 我该怎么做？ 任何建议，将不胜感激。

Answer 1

正如@max所说，您必须向控制器提出另一个请求。 如果您使用jQuery并想发出AJAX请求，则可以这样进行：

$.ajax({
  method: "GET",
  url: "products/some_action",
  data: { lat: pos.lat, lng: pos.lng }
})
.done(function( msg ) {
  alert( "Done" );
});

参见http://api.jquery.com/jquery.ajax/

并在您的ProductsController添加：

def some_action
  # do something with params[:lat] and params[:lng]
end

Answer 2

通过在windows.open javascript函数中传递参数并在产品控制器中获取该参数，解决了上述问题

index.html的：

<!DOCTYPE html>
<html>
<head>

<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
  html, body {
    height: 100%;
    margin: 0;
    padding: 0;
  }
  #map {
    height: 100%;
  }
</style>
</head>
<body>
<div id="map"></div>
<script>
  // Note: This example requires that you consent to location sharing when
  // prompted by your browser. If you see the error "The Geolocation service
  // failed.", it means you probably did not give permission for the browser to
  // locate you.

  function initMap() {
    var map = new google.maps.Map(document.getElementById('map'), {
      center: {lat: -34.397, lng: 150.644},
      zoom: 15
    });
    var infoWindow = new google.maps.InfoWindow({map: map});

    // Try HTML5 geolocation.
    if (navigator.geolocation) {
      navigator.geolocation.getCurrentPosition(function(position) {
        var pos = {
          lat: position.coords.latitude,
          lng: position.coords.longitude
        };

        infoWindow.setPosition(pos);
        infoWindow.setContent('Location found.');
        map.setCenter(pos);
          if(pos){
          window.open("/products?lat="+pos.lat+"&long="+pos.lng,"_blank")
        }
      }, function() {
        handleLocationError(true, infoWindow, map.getCenter());
      });
    } else {
      // Browser doesn't support Geolocation
      handleLocationError(false, infoWindow, map.getCenter());
    }
  }

  function handleLocationError(browserHasGeolocation, infoWindow, pos) {
    infoWindow.setPosition(pos);
    infoWindow.setContent(browserHasGeolocation ?
                          'Error: The Geolocation service failed.' :
                          'Error: Your browser doesn\'t support geolocation.');
  }



    </script>
    <script async defer
src="https://maps.googleapis.com/maps/api   /js?key=AIzaSyBNvjq57_K8vPYRKETMN6bDogqCpRvBoA0&callback=initMap">
    </script>
    </body>
    </html>

产品负责人：

require 'rubygems'

    require 'httparty'

    class ProductsController < ApplicationController



def index
    lat = params[:lat].to_s
    long = params[:long].to_s
    @results = HTTParty.get("https://api.uber.com/v1/products?server_token=your_server_token&latitude="+lat+"&longitude="+long).parsed_response


   respond_to do |format|
   format.json { render :json => JSON.parse(@results) }
   format.html { render "index.html.erb" }
   end
   end
   end

将JavaScript变量传递给Rails控制器上的ruby以进一步发送api

问题描述

2 个解决方案

解决方案1
2 2016-05-24 11:58:44

解决方案2
0 2016-06-03 18:02:35

将JavaScript变量传递给Rails控制器上的ruby以进一步发送api

问题描述

2 个解决方案

解决方案1 2 2016-05-24 11:58:44

解决方案2 0 2016-06-03 18:02:35

解决方案1
2 2016-05-24 11:58:44

解决方案2
0 2016-06-03 18:02:35