Question

我目前正在获取两个JSON数组，并将它们存储在名为json_one和json_two的变量中。一切正常，但现在我想以某种方式将它们组合成一个单一的数组。

如何将2个数组与单个字典合并？

json_one

[
  {
    "address": "1031 25th Street San Diego, CA 92102",
    "id": 1,
    "resource_type_id": 3,
  }
]

json_two

 [
   {
     "resource_id": 4,
   }
 [

我试过这个......

def show
    @user = User.find(params[:user_id])
    @favorite = @user.favorites.find(params[:id])
      @resource_data = []
      (@resource_data << @favorite.resource_type.community_resources.where(:id => @favorite.resource_id)).flatten!
      (@resource_data << @favorite.resource_type.district_resources.where(:id => @favorite.resource_id)).flatten!
      (@resource_data << @favorite.resource_type.military_resources.where(:id => @favorite.resource_id)).flatten!
      (@resource_data << @favorite.resource_type.school_resources.where(:id => @favorite.resource_id)).flatten!

      @favorite_data = []
      (@favorite_data << @favorite)

      json_one = @resource_data.to_json(:only => [:id, :resource_type_id,:district_id,
        :school_id, :name, :description, :website, :phone, :email, :address, :latitude, :longtude]) 

      json_two = @favorite_data.to_json(:only => [:resource_id])

      array1 = JSON.parse(json_one)
      array2 = JSON.parse(json_two)

      #array1 << array2
      #firsts = array2.map {|array2| array2.first}

      combined = [ array1.first.merge(array2.first) ]

      respond_to do |format|
        format.html
        format.json { render json: data }
      end
  end

###but this is my result. 
###I would like both dictionaries to be combined into one.

[
  {
    "address": "1031 25th Street San Diego, CA 92102",
    "id": 1,
    "resource_type_id": 3,
  }
  {
    "resource_id": 4,
  }
]

Answer 1

json_one = "[{\"address\":\"1031 25th Street San Diego, CA 92102\",\"id\":1,\"resource_type_id\":3}]"
json_two = "[{\"resource_id\":4}]"

array1 = JSON.parse(json_one)
array2 = JSON.parse(json_two)

combined = [ array1.first.merge(array2.first) ]

respond_to do |format|
  format.html
  format.json { render json:combined }
end

FWIW，我会在没有JSON的情况下这样做：

combined = @resource_data.slice( :id, :resource_type_id,:district_id,
                                 :school_id, :name, :description, :website, 
                                 :phone, :email, :address, :latitude, :longtude ) 
                         .merge( @favorite_data.slice( :resource_id ))

这会从@resource_data中提取所需的属性，并将其与@favorite_data resource_id属性合并。

请参阅Rails slice docs。

将2个数组与单个词典

1 个答案: