ruby-on-rails - Rails 3：使用选项和值的散列进行字段选择

Question

我想将此哈希用作 f.select 的文本和值列表

控制器

@asset_status_options = [ { "New - Ordered"    => "0"  },
                          { "New - On Site"    => "10" },
                          { "New - Tested"     => "99" },
                          { "Used - Ordered"   => "1"  },
                          { "Used - On Site"   => "11" },
                          { "Used - Torn Down" => "25" },
                          { "Used - Rebuilt"   => "76" },
                          { "Used - Tested"    => "100"}]

看法

<%= m.select :status, options_for_select(@asset_status_options,"") %>

下拉的结果是：

 { "New - Ordered"    => "0"  }
 { "New - On Site"    => "10" }
 { "New - Tested"     => "99" }
 { "Used - Ordered"   => "1"  }
 { "Used - On Site"   => "11" }
 { "Used - Torn Down" => "25" }
 { "Used - Rebuilt"   => "76" }
 { "Used - Tested"    => "100"}

我正在寻找值 0 和 New - Ordered 等文本。

我觉得很简单，但我该怎么做？

Answer 1

您需要：

@asset_status_options = { "New - Ordered"    => "0",
                          "New - On Site"    => "10",
                          "New - Tested"     => "99",
                          "Used - Ordered"   => "1",
                          "Used - On Site"   => "11",
                          "Used - Torn Down" => "25",
                          "Used - Rebuilt"   => "76",
                          "Used - Tested"    => "100" }

或者：

@asset_status_options = [ ["New - Ordered",    "0"],
                          ["New - On Site",    "10"],
                          ["New - Tested",     "99"],
                          ["Used - Ordered",   "1"],
                          ["Used - On Site",   "11"],
                          ["Used - Torn Down", "25"],
                          ["Used - Rebuilt",   "76"],
                          ["Used - Tested",    "100"] ]

有关详细信息，请参阅Rails API。