开发者问题收集

Rails 5,Gmaps4Rails - 设置

2016-10-25
1551

多年来,我一直在尝试如何将 gmaps4rails 整合到 rails 应用程序中。

我制作了一个全新的应用程序并尝试了全新的功能。

我搞不清楚哪里出了问题。我正在寻找完整且最新的安装说明。许多 SO 帖子都提到了旧版本的依赖项,最后都说这个问题在更高版本中得到了解决。

目前,我的观点是:

611164714​​

在我的 application.js 中,我有:

//= require jquery
//= require jquery_ujs
//= require turbolinks
//= require bootstrap-sprockets
//= require moment
//= require bootstrap-datetimepicker
//= require pickers
//= require underscore
//= require gmaps/google
//= require markerclusterer
//= require_tree .

我已将 underscore.js 的生产版本保存在我的 vendor/assets/javascripts 文件夹中。我还将 markerclusterer.js 保存为同一文件夹中的文件。

在我的 gem 文件中,我有:

gem 'geocoder'
gem 'gmaps4rails', '~> 2.1', '>= 2.1.2'
gem 'countries'
gem 'country_select'

在我的控制器中,我有:

class AddressesController < ApplicationController

    def index
    end

    def show
        @hash = Gmaps4rails.build_markers(@address) do |address, marker|
          marker.lat address.latitude
          marker.lng address.longitude
       end
    end

    def new
        @address = Address.new
    end 

    def create
    @address = Address.new(address_params)
    # authorize @address

    respond_to do |format|
      if @address.save
        format.html { redirect_to @address, notice: 'Address was successfully created.' }
        format.json { render :show, status: :created, location: @address }
      else
        format.html { render :new }
        format.json { render json: @address.errors, status: :unprocessable_entity }
      end
    end
  end


  private
    # Use callbacks to share common setup or constraints between actions.
    def set_address
      @address = Address.find(params[:id])
      # authorize @address
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def address_params
      params[:address].permit(:unit, :building, :street_number, :street, :city, :region, :zip, :country, :time_zone, :latitude, :longitude)
    end


    def user_time_zone(&block)
      Time.use_zone(current_user.time_zone, &block)
    end
end

当我尝试使用地图呈现视图时,chrome 检查器显示以下错误:

v3.googlecode.com/svn/tags/markerclustererplus/2.0.14/src/markerclusterer_packed.js 无法加载资源:服务器响应状态为 404(未找到) chrome-extension://mkjojgglmmcghgaiknnpgjgldgaocjfd/content/contentScripts/kwift.CHROME.min.js:1271 未捕获的语法错误:标识符“findGoodContent”已声明 util.js:221 Google Maps API 警告:NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys util.js:221 Google Maps API 警告:RetiredVersion https://developers.google.com/maps/documentation/javascript/error-messages#retired-version util.js:221 Google Maps API 警告:InvalidKey https://developers.google.com/maps/documentation/javascript/error-messages#invalid-key

我不理解这些错误,也找不到如何设置此 gem 以在 rails 中使用它的说明。我看到它已经被下载了很多次 - 人们一定已经弄清楚了如何设置它。我快要疯了,想弄清楚这一点。

重新生成 API 密钥后

我尝试在 Google 控制台上重新生成我的浏览器 API 密钥。

现在,当我尝试呈现页面时,我收到以下控制台错误:

primitives.self-5b8a3a6….js?body=1:5 Uncaught ReferenceError: google is not defined(…)Gmaps.Google.Primitives @ primitives.self-5b8a3a6….js?body=1:5Gmaps.Objects.Handler.Handler.setPrimitives @ handler.self-2f220ca….js?body=1:122Handler @ handler.self-2f220ca….js?body=1:8build @ base.self-8dd1d1a….js?body=1:9(anonymous function) @ VM2063:2t.SnapshotRenderer.n.assignNewBody @ turbolinks.self-c5acd7a….js?body=1:6t.SnapshotRenderer.n.replaceBody @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6t.Renderer.t.renderView @ turbolinks.self-c5acd7a….js?body=1:6t.SnapshotRenderer.n.render @ turbolinks.self-c5acd7a….js?body=1:6t.Renderer.t.render @ turbolinks.self-c5acd7a….js?body=1:6t.View.e.renderSnapshot @ turbolinks.self-c5acd7a….js?body=1:6t.View.e.render @ turbolinks.self-c5acd7a….js?body=1:6t.Controller.r.render @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6
turbolinks.self-c5acd7a….js?body=1:6 GET http://google-maps-utility-library-v3.googlecode.com/svn/tags/markerclustererplus/2.0.14/src/markerclusterer_packed.js t.SnapshotRenderer.n.assignNewBody @ turbolinks.self-c5acd7a….js?body=1:6t.SnapshotRenderer.n.replaceBody @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6t.Renderer.t.renderView @ turbolinks.self-c5acd7a….js?body=1:6t.SnapshotRenderer.n.render @ turbolinks.self-c5acd7a….js?body=1:6t.Renderer.t.render @ turbolinks.self-c5acd7a….js?body=1:6t.View.e.renderSnapshot @ turbolinks.self-c5acd7a….js?body=1:6t.View.e.render @ turbolinks.self-c5acd7a….js?body=1:6t.Controller.r.render @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6
turbolinks.self-c5acd7a….js?body=1:6 GET http://localhost:3000/users/assets/images/grayscale.svg t.SnapshotRenderer.n.assignNewBody @ turbolinks.self-c5acd7a….js?body=1:6t.SnapshotRenderer.n.replaceBody @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6t.Renderer.t.renderView @ turbolinks.self-c5acd7a….js?body=1:6t.SnapshotRenderer.n.render @ turbolinks.self-c5acd7a….js?body=1:6t.Renderer.t.render @ turbolinks.self-c5acd7a….js?body=1:6t.View.e.renderSnapshot @ turbolinks.self-c5acd7a….js?body=1:6t.View.e.render @ turbolinks.self-c5acd7a….js?body=1:6t.Controller.r.render @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6(anonymous function) @ turbolinks.self-c5acd7a….js?body=1:6
util.js:221 Google Maps API warning: NoApiKeys https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keysuD.S @ util.js:221(anonymous function) @ js?v=3.23&key=:127(anonymous function) @ js?v=3.23&key=:47(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:47(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97jc @ js?v=3.23&key=:46gc.Qc @ js?v=3.23&key=:97(anonymous function) @ common.js:1
util.js:221 Google Maps API warning: RetiredVersion https://developers.google.com/maps/documentation/javascript/error-messages#retired-versionuD.S @ util.js:221(anonymous function) @ js?v=3.23&key=:127(anonymous function) @ js?v=3.23&key=:47(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:47(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97jc @ js?v=3.23&key=:46gc.Qc @ js?v=3.23&key=:97(anonymous function) @ common.js:1
util.js:221 Google Maps API warning: InvalidKey https://developers.google.com/maps/documentation/javascript/error-messages#invalid-keyuD.S @ util.js:221(anonymous function) @ js?v=3.23&key=:127(anonymous function) @ js?v=3.23&key=:47(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:47(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97(anonymous function) @ js?v=3.23&key=:44(anonymous function) @ js?v=3.23&key=:97jc @ js?v=3.23&key=:46gc.Qc @ js?v=3.23&key=:97(anonymous function) @ common.js:1

当我在终端中查找 rails s 时,我也可以看到:

ActionController::RoutingError (No route matches [GET] "/assets/underscore-min.map"):

Parameters: {"id"=>"4"}
ActionController::RoutingError (No route matches [GET] "/users/assets/images/grayscale.svg"):

关于下划线路由错误,终端中的行指的是 assets/underscore。我的文件结构是 vendor/assets/javascripts,然后文件保存为 underscore.js(不是 min.map)。

另一次尝试

我尝试用 v3.24 替换 js v3.23,这样就消除了上述警告消息。但是,我仍然无法获得地图来呈现地址。当我检查 chrome 控制台检查器时,我可以看到该地址在 javascript 中得到确认,但纬度和经度详细信息没有:

  handler = Gmaps.build('Google');
  handler.buildMap({ provider: {}, internal: {id: 'map'}}, function(){
    markers = handler.addMarkers([{"lat":null,"lng":null,"infowindow":"Unit 1\u003cbr\u003e34 Darling Street\u003cbr\u003eBuilding D\u003cbr\u003eBalmain East   NSW   2041\u003cbr\u003eAustralia"}]);
    handler.bounds.extendWith(markers);
    handler.fitMapToBounds();
  });

我现在想知道这个问题是否与模型关联有关。

我有一个地址模型和一个组织模型。关联是:

地址:

belongs_to :addressable, :polymorphic => true, optional: true

组织:

has_many :addresses, as: :addressable
    accepts_nested_attributes_for :addresses,  reject_if: :all_blank, allow_destroy: true

在我的地址控制器显示操作中,我有:

def show
        @hash = Gmaps4rails.build_markers(@address) do |address, marker|
          marker.lat user.latitude
          marker.lng user.longitude
          # marker.title user.title
      end
    end

在我的组织控制器显示操作中,我有:

    def show
    @addresses = @organisation.addresses

    @hash = Gmaps4rails.build_markers(@addresses) do |address, marker|
        marker.lat address.latitude
        marker.lng address.longitude
        marker.infowindow address.full_address
    end    
  end

包含地图的部分位于 views/addresses/map.html.erb 中

当我尝试使用这些更改再次呈现页面时,我收到很多错误,所有错误都说:

js?v=3.24&key=AIzaSyAleQgfNH3HRQVUCYnyAzp46xmXW7WrWrc:37 Uncaught RangeError: Maximum call stack size exceeded

我读过其他 SO 帖子,其中人们遇到过这个错误,并且注释继续讨论“递归循环”。我似乎没有任何代码与这些错误中显示的代码类似,所以我不确定如何处理这些消息。

我想知道是否需要更改组织控制器操作以某种方式引用组织地址而不是一般地址(虽然如果是这种情况,那么我不明白控制台检查器如何显示从地图部分在 js 中识别的正确地址)。

有人可以提供一个详细的分步教程来帮助我解决这个问题吗?

其他有类似问题的人

我可以从其他 SO 帖子中看到其他人也遇到过类似的问题。建议似乎是这个答案: Gmaps4rails 是否超出最大调用堆栈大小?

不过我想我已经这样做了 - 我在每个地址控制器和组织控制器中的显示操作都引用了纬度/经度而不是完整的单词(在数据库中使用)。

ERIC 的建议

根据 Eric 的建议,我从 gem 文件中删除了 gmaps4rails gem,并从 application.js 中删除了 require/gmaps 行

我将组织控制器的显示操作更改为:

def show
    @addresses = @organisation.addresses.all

    # @hash = Gmaps4rails.build_markers(@addresses) do |address, marker|
    #     marker.lat address.latitude
    #     marker.lng address.longitude
    #     marker.infowindow address.full_address
    # end

  end

此步骤与 Eric 对其标记控制器的索引操作的建议相同。我单独有一个地址控制器,它具有与 Eric 的类似的索引操作。在我的数据库中,地址是多态的,属于组织。我正在尝试在组织展示页面上呈现地图,因此我认为这一步与 Eric 的建议一致。

接下来,我使用以下内容更新了我的地址/_map.html.erb:

<h3>My Google Maps Demo</h3>
<div id="map"></div>

<%= javascript_tag do %>
  var addresses = <%= raw @addresses.to_json %>;
<% end %>

<script async defer
src="https://maps.googleapis.com/maps/api/js?key=<%= ENV['GOOGLE_MAPS_API_KEY'] %>&callback=initMap">
</script>

我在 app/javascripts 文件夹中为addresses.js 创建了一个新文件,其中包含:

   function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 4
  });
  var bounds = new google.maps.LatLngBounds();

  var n = addresses.length;
  for (var i = 0; i < n; i++) {
    var address = new google.maps.Address({
      position: {lat: parseFloat(addresses[i].latitude), lng: parseFloat(addresses[i].longitude)},
      title: addresses[i].name,
      map: map
    });
    bounds.extend(address.position);
  }

  map.fitBounds(bounds);
}

当我保存所有这些并尝试时,屏幕上会出现一个空的灰色框。

当我使用 chrome 检查器时,我可以看到:

//<![CDATA[

  var addresses = [{"id":5,"unit":"1","building":"d","street_number":"34","street":"darling street","city":"Balmain East","region":"NSW","zip":"2041","country":"AU","time_zone":"International Date Line West","addressable_id":1,"addressable_type":"Organisation","description":"main_address","created_at":"2016-10-27T19:17:27.919Z","updated_at":"2016-11-08T22:48:16.978Z","latitude":"-33.85751","longitude":"151.193546"}];

//]]>

以上是数据库中的地址。但它并没有制作地图。

有人能看到我需要做什么才能让地图呈现地址吗?

当我查看 Chrome 控制台检查器时

我可以在控制台检查器中看到几个新的错误。

它们是:

addresses.self-176b72f….js?body=1:9 Uncaught TypeError: google.maps.Address is not a constructor

这篇文章也有类似的问题。可接受的解决方案是添加回调。我不知道如何或在哪里执行此操作。

Google Maps API v3 - TypeError:表达式“google.maps.LatLng”的结果 [undefined] 不是构造函数

3个回答

首先尝试摆脱“NoApiKeys”、“InvalidKey”错误。您是否已生成密钥,如 此说明 中所述?您确定将生成的密钥放入 ENV['GOOGLE_MAPS_API_KEY'] 中吗?

sig
2016-10-25

这是我能用 Google 地图运行的最小的 Rails 应用程序。

Ruby 2.3.1、Rails 5.0.0.1,无需额外的 gem。

rails new gmaps

取消注释

gem 'therubyracer', platforms: :ruby

在Gemfile

bundle install

rails generate resource marker name:string latitude:decimal longitude:decimal

rake db:migrate

app/controllers/markers_controller.rb:

class MarkersController < ApplicationController
  def index
    @markers = Marker.all
  end
end

app/views/markers/index.html.erb:

<h3>My Google Maps Demo</h3>
<div id="map"></div>

<%= javascript_tag do %>
  var markers = <%= raw @markers.to_json %>;
<% end %>

<script async defer
src="https://maps.googleapis.com/maps/api/js?key=<%= ENV['GOOGLE_MAPS_API_KEY'] %>&callback=initMap">
</script>

app/assets/stylesheets/markers.scss:

#map {
  height: 400px;
  width: 100%;
}

app/assets/javascripts/markers.js:

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 4
  });
  var bounds = new google.maps.LatLngBounds();

  var n = markers.length;
  for (var i = 0; i < n; i++) {
    var marker = new google.maps.Marker({
      position: {lat: parseFloat(markers[i].latitude), lng: parseFloat(markers[i].longitude)},
      title: markers[i].name,
      map: map
    });
    bounds.extend(marker.position);
  }

  map.fitBounds(bounds);
}

rails c 中添加一些标记:

Marker.create(:name => 'Sydney', :latitude => -33.87, :longitude => 151.17)
Marker.create(:name => 'Uluru', :latitude => -25.363, :longitude => 131.044)

在 bash 中将您的 API KEY 添加到环境中:

export GOOGLE_MAPS_API_KEY="AIza.............................."

rails s

完成!

我用了这个 答案 和此 Gmaps 文档

您可能应该检查没有恶意代码传输到 javascript,例如通过 Marker#name。

Eric Duminil
2016-11-08

希望您已经解决了这个问题,但您的 JS 似乎与您的 api 密钥不符。 您是否遇到了 OOPS 错误? 您需要使用包含“v=3”的更新版本。

<script src="//maps.google.com/maps/api/js?v3key=[API_KEY]"></script>
LiffeyD
2017-02-18