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ruby-如果数组中不包含字符串

staticmatic conditional-operator each haml ruby

1

Dr. Frankenstein · 技术社区 · 16 年前

我只想在这里输出一个锚。如果当前页面在数组中,我得到两个(.html和-nf.html)。如果它不在数组中,我将获得与数组中的项目一样多的锚。

- if page_options[:current_index] < page_options[:total_index] && page_options[:current_index] > 0

    // loop through the pre-flash array and if current page matches, add -nf
    - page_options[:pre_flash] = ['string_one-nf', 'string_two-nf', 'string_three-nf']
    - page_options[:pre_flash].each do |each_string|

        - if current_page.include? each_string
            %li 
                %a{ :href => "page#{page_options[:current_index]}-nf.html", :class => "next" }
                    Next
        - else
            %li
                %a{ :href => "page#{page_options[:current_index]}.html", :class => "next" }
                    Next

2 回复 | 直到 16 年前

1

2

Steinbitglis 16 年前

unless current_page.include? the_string

编辑:

如果你想让你的第一个发现成为唯一的,你可以打破每个循环。无论发生什么,在第一个元素之后都会断裂。我在解决你的问题吗?

options[:pre_flash] = ['string_one-nf', 'string_two-nf', 'string_three-nf']
page_options[:pre_flash].each do |each_string|
  if current_page.include? each_string
    %li 
    %a{ :href => "page#{page_options[:current_index]}-nf.html", :class => "next" }
    # This is the last ancor
    break
  else
    %li 
    %a{ :href => "page#{page_options[:current_index]}.html", :class => "next" }
    # This is the last ancor
    break
  end
end

2

1

Dafydd Rees 16 年前

好的,我想我们正在检查page_选项[:current_index]都不是当前_页面的子字符串。

if page_options[:current_index] < page_options[:total_index] && page_options[:current_index] > 0

found_item = false

// loop through the pre-flash array and if current page matches, add -nf
- page_options[:pre_flash] = ['string_one-nf', 'string_two-nf', 'string_three-nf']
- page_options[:pre_flash].each do |each_string|

    - if current_page.include? each_string
            found_item = true
            %li 
                    %a{ :href => "page#{page_options[:current_index]}-nf.html", :class => "next" }
                            Next

# do whatever you need to get out of the staticmatic block...

    - if !found_item

            %li
                    %a{ :href => "page#{page_options[:current_index]}.html", :class => "next" }