Ruby-on-rails 每个循环Haml？
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Each loop Haml?
提问by Remco
I have this eachloop: (haml)
我有这个each循环：（haml）
- @deals.each do |a|
.slide
%a{:href => "#"}
- a.attachments.each do |a|
= image_tag(a.file.url, :height =>"325px", :width =>"650px" )
.caption{:style => "bottom:0"}
= a.description
Because @dealsis combined query of 3 tables (models) I use polymorphic_pathto generate the links of the images.
因为@deals是我polymorphic_path用来生成图像链接的3 个表（模型）的组合查询。
- @deals.each do |a|
.slide
%a{:href => "#"}
- a.attachments.each do |a|
= image_tag(a.file.url, :height =>"325px", :width =>"650px" ), polymorphic_path(@region, @city, a)
.caption{:style => "bottom:0"}
= a.description
But this generates region_city_attachment_pathwhich is not correct. The first each loop avariable store the correct value, but how can I reachthe first avariable in the second eachloop?
但这会产生region_city_attachment_path不正确的结果。第一个每个循环a变量存储正确的值，但是如何在第二个循环中存储reach第一个a变量each？
回答by iblue
Just give it another name.
只是给它另一个名字。
- @deals.each do |a|
.slide
%a{:href => "#"}
- a.attachments.each do |b|
= image_tag(a.file.url, :height =>"325px", :width =>"650px" ), polymorphic_path(@region, @city, b)
.caption{:style => "bottom:0"}
= a.description
回答by arieljuod
you should be more clear when using variable names, do something like
使用变量名时你应该更清楚，做类似的事情
- @deals.each do |deal|
.slide
%a{:href => "#"}
- deal.attachments.each do |attachment|
..
it's a really bad practice to use names such as "a"/"b"/"x" when you can write a much more readable code
当您可以编写更具可读性的代码时，使用诸如“a”/“b”/“x”之类的名称是一种非常糟糕的做法
回答by Ry-
Just don't use the same name for both of them, and everything will turn out fine.
只是不要对它们使用相同的名称，一切都会好起来的。
