select_tag和javascript在Rails問題中

Question

我試圖使用rails select_tag生成html並將其保存到要動態使用的變量中。 由於某些原因，以下是導致此錯誤的原因：

未捕獲的語法錯誤：意外的令牌非法

下面是問題代碼：

function addItemRowHTML(offsetidentifiervalue)
{
    $node = ' \
         <%= select_tag "currency",  
            options_for_select(Country.all.each_with_index.map {
            |country, index| 
                [country["currency_code"],
                 country["currency_code"]]},
                @invoice["data"]["currency"] ),
                :style => "width:120px"
        %> \
        ';

}

雖然text_field_tag有效

$node =' <%= text_field_tag("amount", "10") %> ';

那我該如何處理select_tag？ 謝謝

Answer 1

<% html_select_tag = select_tag( "currency",  
      options_for_select(Country.all.map(&:currency_code),
      @invoice["data"]["currency"] ),
      :style => "width:120px" ).gsub("\n", "\\n").gsub("'","\\'") %>

var $node = '<%= html_select_tag %>';

有人已經在這里回答了類似的問題： https : //stackoverflow.com/a/13631186/2134720

Answer 2

這有效

    $node = '<% select_tag("currency",  
            options_for_select(Country.all.each_with_index.map {
            |country, index| 
                [country["currency_code"],
                 country["currency_code"]]},
                @invoice["data"]["currency"] ),
                :style => "width:120px").gsub("\n", "\\n").gsub("'","\\'")
    %> ';

這將是一個更好的解決方案，使用raw可以避免換行符的減少

    $node = '<% raw select_tag("currency",  
            options_for_select(Country.all.each_with_index.map {
            |country, index| 
                [country["currency_code"],
                 country["currency_code"]]},
                @invoice["data"]["currency"] ),
                :style => "width:120px").gsub("\n", "\\n").gsub("'","\\'")
    %> ';