Ruby on rails Rails如何在my helper中构建自定义json请求

我正在使用一个API，并试图在助手中发布以下请求

module ShoppingCartHelper

def update_order
  HTTParty.post("APIURL",
            :body => {
            @all_lines.each do |line|
            :ProductCode => line.ProductCode,
            :Quantity => line.Quantity,
            :UnitPrice => line.UnitPrice,
            :Pages =>
            [
                {
                    :PageNumber => line.PageNumber,
                    :Assets =>
                    [
                        { 
                            :AssetNumber => line.AssetNumber,
                            :Name => line.Name,
                            :HiResImage => line.HiResImage, 
                            :CropMode => line.CropMode
                        }
                    ]
                }
            ]
        end
        }.to_json,
      :headers => { 'Content-Type' => 'application/json' })
end

end

当我这样做时，我会得到各种语法错误和意外字符@all_lines是数据库中一个订单的所有行，我试图为它找到的每一行构建json主体。。请帮忙

我没有使用像jbuilder这样的东西，因为我使用的所有字段都在一个表中。。它们没有链接到我可以包含它们的地方。除非有其他方法来创建自定义标签

更新：我需要此结构才能工作，但我收到语法错误：

  HTTParty.post("APIURL",
            :body => 
            "Lines" =>
            [
            @all_lines.map do |line|
             {
               :ProductCode => line.ProductCode,
               :Quantity => line.Quantity,
               :UnitPrice => line.UnitPrice,
               :Pages =>
               [
                  {
                    :PageNumber => line.PageNumber,
                    :Assets =>
                    [
                      { 
                        :AssetNumber => line.AssetNumber,
                        :Name => line.Name,
                        :HiResImage => line.HiResImage, 
                        :CropMode => line.CropMode
                      }
                    ]
                  }
               ]
            } 
          end.to_json],
      :headers => { "Content-Type" => "application/json"})

API的请求主体需要如下所示：

"Lines":
    [
        {
            "ProductCode":"5x7",
            "Quantity":2,
            "UnitPrice":1.25,
            "Pages":
            [
                {
                    "PageNumber":1,
                    "Assets":
                    [
                        {
                            "AssetNumber":1,
                            "Name":"000-R20110419153212.jpg",
                            "HiResImage":"http:\/\/www.google.com\/xyz.jpg",
                            "CropMode":"FILLIN"
                        }
                    ]
                }
            ]
        }
    ]

---

each

API返回数组本身（无需修改）。您可能希望使用

映射

，它返回块结果的数组：

[1, 2, 3].each { |x| x*2 }
# => [1, 2, 3]
[1, 2, 3].map { |x| x*2 }
# => [2, 4, 6]

因此请尝试（您还错过了块中散列结果的大括号的位置）：

---

使用“行”包装器：

HTTParty.post("APIURL",
            :body => 
            {"Lines" =>
            [
            @all_lines.map do |line|
             {
               :ProductCode => line.ProductCode,
               :Quantity => line.Quantity,
               :UnitPrice => line.UnitPrice,
               :Pages =>
               [
                  {
                    :PageNumber => line.PageNumber,
                    :Assets =>
                    [
                      { 
                        :AssetNumber => line.AssetNumber,
                        :Name => line.Name,
                        :HiResImage => line.HiResImage, 
                        :CropMode => line.CropMode
                      }
                    ]
                  }
               ]
            } 
          end]}.to_json,
      :headers => { "Content-Type" => "application/json" })

---

您好，谢谢您的回复！希望你能多帮点忙。我错过了API中的一个结构，我需要在顶部添加行，但我再次遇到语法错误：啊，谢谢！！你能不能也编辑掉Apikey的部分lol，忘了把它取下来

HTTParty.post("APIURL",
            :body => 
            {"Lines" =>
            [
            @all_lines.map do |line|
             {
               :ProductCode => line.ProductCode,
               :Quantity => line.Quantity,
               :UnitPrice => line.UnitPrice,
               :Pages =>
               [
                  {
                    :PageNumber => line.PageNumber,
                    :Assets =>
                    [
                      { 
                        :AssetNumber => line.AssetNumber,
                        :Name => line.Name,
                        :HiResImage => line.HiResImage, 
                        :CropMode => line.CropMode
                      }
                    ]
                  }
               ]
            } 
          end]}.to_json,
      :headers => { "Content-Type" => "application/json" })