Module: Utils::ViewHelper

Defined in:
lib/utils/view_helper.rb

Instance Method Summary collapse

Instance Method Details

#bool_label(val) ⇒ Object

输出布尔值标签



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# File 'lib/utils/view_helper.rb', line 5

def bool_label(val)
  output = "<span class=\"label " + (val ? 'label-success' : 'label-default') +
          "\">" + (val ? '是' : '否')  +"</span>"
  output.html_safe
end

#info_paginate(collection, options = {}) ⇒ Object

分页显示标签



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# File 'lib/utils/view_helper.rb', line 33

def info_paginate(collection, options = {})
  pre_page = collection.current_page - 1
  next_page = collection.current_page + 1
  html = ""
  html += "<div id=\"" + options[:container] = "\">" unless options[:container].nil? 

  html += "<span>共<span>" + collection.total_entries.to_s + "</span>条记录<span>" +
          collection.total_pages.to_s + "</span>页</span>" if options[:show_total]

  html += "<span><a id=\"first\" href=\"" + url_for(params.merge(:page=> "1")) + 
           "\">第一页</a></span>" if options[:full_link] && collection.current_page > 1

  if pre_page > 0 
    html += "<span><a id=\"prev\" href=\"" + url_for(params.merge(:page=> pre_page)) + "\"" 
    html += " class=\"" + options[:class] + "\"" unless options[:class].nil?
    html += ">上一页</a></span>"
  end

  html += "<span>当前第<span>" + collection.current_page.to_s + "</span>页</span>" if options[:full_link]

  if next_page <= collection.total_pages
    html += "<span><a id=\"next\" href=\"" + url_for(params.merge(:page=> next_page)) + "\"" 
    html += " class=\"" + options[:class] + "\"" unless options[:class].nil?
    html += ">下一页</a></span>"
  end

  html += "<span><a id=\"last\" href=\"" + url_for(params.merge(:page=> collection.total_pages)) + 
           "\">最后一页</a></span>" if options[:full_link] && collection.current_page < collection.total_pages
  html += "</div>" unless options[:container].nil? 
  html.html_safe
end

#str_trim(str, length, postfix = '...') ⇒ Object

字符串截取



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# File 'lib/utils/view_helper.rb', line 28

def str_trim(str,length,postfix='...')
 str[0,length]+(str.length > length ? postfix : "") if str
end

#thumbnail(file, width = 150, use_thumb = true) ⇒ Object

输出预览图



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# File 'lib/utils/view_helper.rb', line 12

def thumbnail(file,width=150,use_thumb=true)
  output = '暂无图片'
  unless file.blank?
    if use_thumb
      thumb_file = Utils::FileUtil.get_thumb_file(file) 
      full_name = Rails.root.join("public",thumb_file.to_s) 
      file = thumb_file if File.file?(full_name)
    end
    file = "/" + file if !file.start_with?("/") && !file.start_with?("http://")
    output = "<div class=\"img-thumbnail\">" + image_tag(file,:width=>width) +"</div>"
  end
  
  output.html_safe
end