在上述代码中,我们首先定义了一个数组array和切片大小slice_size。然后使用each_slice方法将数组按照指定大小切片。接着使用each_with_index方法遍历每个切片,并获取切片的索引位置。 在循环体内部,我们使用条件判断if index % slice_size == 0来排除索引位置。这里使用取模运算符%来判断索引位置是否为切片的起始位...
ruby-on-rails rails each_with_index缓存与each_with_index无关。您调用了错误的该高速缓存方法。你的...
(7)each 遍历数组 arr.each 迭代器,用来遍历数组,返回每个数组的值 arr.each_with_index 遍历数组的返回,每个数组的值以及对应的索引 irb(main):026:0> [1,2,3,4,5].each {|x| puts "此次返回的值为:" + x.to_s} 此次返回的值为:1 此次返回的值为:2 此次返回的值为:3 此次返回的值为:4 此...
2,Members的first/last name将加入到该index,以后每次add/update/delete一个member都会增量更新index 如果你需要重新生成index,只需删除相应的文件目录并重启服务器,下次search时就会重新生成index 3,ActsAsFerret将会在我们的index上调用Ferret的search_each方法 4,我们将得到10条如下形式的结果: members = [ {:model ...
index 方法 def index@article = Article.allend 定义视图：List all Articles <%= link_to "new article", new_article_path %><% @article.each do |a| %>title: <%= a.title %>content: <%= a.content %><% end %> 此时访问 /articles 路径可以看到 文章更新通过路由配置更新分别对应...
如:在数据循环中使用<%= user.id %>等情况。这样虽然在页面编写、调试时比较直观但不太好。最好在循环中使用.each_with_index方法,即按序号展示。 <%@users.each_with_indexdo|user,index|%><%=index+1%><%=user.name%><%=user.location%><%end%>...
编辑views/buckets/index.html.erb,列举Bucket列表。 BucketsNameLocationCreationTime<% @buckets.each do |bucket| %><%= link_to bucket.name, bucket_objects_path(bucket.name) %><%= bucket.location %><%= bucket.creation_time.localtime.to_s %><% end %> 在app/helpers/buckets_helper.rb中定义...
Each Entry belongs to a User.We validate the presence of distance, time_period, date_time and status attributes for each entry.Every time we create an entry, we compare the average speed of the user with the average of all other users in the system, and notify the user by SMS using ...
See the elasticsearch-rails library for more information about compatibility with the Ruby on Rails framework.When you want to access both the database records and search results, use the each_with_hit (or map_with_hit) iterator:response.records.each_with_hit { |record, hit| puts "* #{...
"GET stories#index" do context "when the user is an admin" do it "should list titles of all stories" do admin = create(:admin) stories = create_list(:story, 10, user: admin) login_as(admin, scope: :user) visit stories_path stories.each do |story| page.shou...