Question

我遇到编译错误。你能帮助我得到它吗？这在我看来（特别是5prime_primer的第三行）：

 <tr>
      <td><%=relation.AmpInfoName%></td>
      <td><%=relation.5prime_primer%></td>
      <td><%=relation.3prime_primer%></td>
      <td><%=relation.Selective_bases_1%></td>
      <td><%=relation.Selective_bases_2%></td>
 </tr>

产生此错误：

compile error
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:314: no .<digit> floating literal anymore; put 0 before dot
...tput_buffer.append= (relation.5prime_primer);@output_buffer....
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:314: syntax error, unexpected tINTEGER
...put_buffer.append= (relation.5prime_primer);@output_buffer.s...
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:315: no .<digit> floating literal anymore; put 0 before dot
...tput_buffer.append= (relation.3prime_primer);@output_buffer....
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:315: syntax error, unexpected tINTEGER
...put_buffer.append= (relation.3prime_primer);@output_buffer.s...
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:338: no .<digit> floating literal anymore; put 0 before dot
...tput_buffer.append= (relation.5prime_primer);@output_buffer....
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:338: syntax error, unexpected tINTEGER
...put_buffer.append= (relation.5prime_primer);@output_buffer.s...
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:339: no .<digit> floating literal anymore; put 0 before dot
...tput_buffer.append= (relation.3prime_primer);@output_buffer....
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:339: syntax error, unexpected tINTEGER
...put_buffer.append= (relation.3prime_primer);@output_buffer.s...
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:354: no .<digit> floating literal anymore; put 0 before dot
...tput_buffer.append= (relation.5prime_primer);@output_buffer....
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:354: syntax error, unexpected tINTEGER
...put_buffer.append= (relation.5prime_primer);@output_buffer.s...
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:355: no .<digit> floating literal anymore; put 0 before dot
...tput_buffer.append= (relation.3prime_primer);@output_buffer....
                              ^
/usr/home/benjamin/locus/app/views/locus_table/show.html.erb:355: syntax error, unexpected tINTEGER
...put_buffer.append= (relation.3prime_primer);@output_buffer.s...

你能帮助我弄清楚如何解决这个问题吗？

Answer 1

Ruby方法名称不能以数字开头。但是，您可以定义自己的访问者：

class Foo < ActiveRecord::Base
  def three_prime_primer
    read_attribute '3_prime_primer'
  end

  def three_prime_primer=(value)
    write_attribute '3_prime_primer', value
  end
end

用一个小方法包装它并不难，这样你就可以

access_attribute '3_prime_primer', :as => 'three_prime_primer'

Answer 2

我在模型中定义了一个方法，然后使用hashmap查找属性：

class AmplificationInfoTable < ActiveRecord::Base
        attr_accessor :all
        def fiveprime_primer
                attributes["5prime_primer"]
        end
end

这让我可以做以下事情：

relation.fiveprime_primer

和平！

Rails：使用以整数开头的属性名编译错误

2 个答案: