有没有办法通过删除括号将Ruby中的数组转换为浮点数？

I have a little problem that seems rather easy to solve but I can't seem to find a solution. I'm using the Geocoder gem for Rails and from this method of:

我有一个小问题似乎很容易解决，但我似乎无法找到解决方案。我正在使用Rails的Geocoder gem和以下方法：

Geocoder.coordinates(params[:search])

I'm getting an array that contains floats like this: [43.653226, -79.3831843]

我得到一个包含这样的浮点数的数组：[43.653226，-79.3831843]

My question is, is there a way to remove the brackets from the array or convert the value to a float so the output is 43.653226, -79.3831843?

我的问题是，有没有办法从数组中删除括号或将值转换为浮点数，所以输出是43.653226，-79.3831843？

My closest solution so far has been to do this:

到目前为止，我最接近的解决方案是：

a = Geocoder.coordinates(params[:search])

and then to obtain each float individually by doing this in the method call:

然后通过在方法调用中执行此操作来单独获取每个浮点数：

a[0] --> 43.653226
a[-1] --> -79.3831843

This doesn't seem to work as I get an error with the particular method that I am trying to use.

这似乎不起作用，因为我尝试使用的特定方法出错。

I'm using the 'sunspot-solr' and 'sunspot-rails' gem for this and what I am trying to do is allow a user to enter a city to find users and then display users near that city within a 100, 200 km radius

我正在使用'sunspot-solr'和'sunspot-rails'宝石，我想做的是让用户进入一个城市寻找用户，然后在100,200 km范围内显示该城市附近的用户半径

This is what I have in my user.rb file:

这是我在user.rb文件中的内容：

class User < ActiveRecord::Base

    searchable do
        text :city
        latlon(:location) { Sunspot::Util::Coordinates.new(latitude, longitude) }
    end

end

This is what's in my users_controller.rb

这就是我的users_controller.rb中的内容

def index
    if params[:search]
      @search = User.search do
        fulltext params[:search]
        with(:location).near(*Geocoder.coordinates(params[:search]),:precision => 6)
      end
      @users = @search.results
    end
end

This is the line that seems to be causing the problem: with(:location).near(*Geocoder.coordinates(params[:search]),:precision => 6)

这是似乎导致问题的一行：with（：location）.near（* Geocoder.coordinates（params [：search]）,: precision => 6）

And finally in my view, this is the search form:

最后在我看来，这是搜索表单：

<%= form_tag users_path, class: "form-signin", role: "form", method: :get do %>

    <%= text_field_tag :search, params[:search], class: "form-control", placeholder:"Type in a location" %>

    <div><%= submit_tag "Search users", class: "btn btn-lg btn-primary btn-block", id: "home-search" %></div>

<% end %>

Now when I'm trying to add the geospatial feature I'm getting a 400 error that looks like this:

现在，当我尝试添加地理空间功能时，我收到400错误，如下所示：

RSolr::Error::Http - 400 Bad Request Error: {'responseHeader'=>{'status'=>400,'QTime'=>2},'error'=>{'msg'=>'com.spatial4j.core.exception.InvalidShapeException: incompatible dimension (2) and values (dpz83dffmxps). Only 0 values specified','code'=>400}}

If anyone can help that'd me great!

如果有人能帮助我，那就太棒了！

2 个解决方案

#1

The values are floats already, if you want to use the content of the array as 2 arguments to a method call then you can use the splat operator (*) e.g

如果要将数组的内容用作方法调用的2个参数，那么值已经是浮点数，那么您可以使用splat运算符（*），例如

method_call(*[43.653226, -79.3831843]) is same as method_call(43.653226, -79.3831843)

or destructure the array and pass the new variables as argument e.g:

或者对数组进行解构并将新变量作为参数传递，例如：

lat, lng = [43.653226, -79.3831843]
method_call(lat,lng)

#2

You could use join: eg.

你可以使用join：例如。

a = Geocoder.coordinates(params[:search])
a.join(", ");

Would return the array - comma separated.

将返回数组 - 逗号分隔。

#1