如何从视图中触发支架生成?
例如,假设我有一个这样的方法:
def scaffold_generation
system "rails g scaffold TodoList task author"
end
如何在我的“example_page.html.erb”上创建一个按钮,触发此方法在服务器上执行命令? (这里不担心安全问题)
答案 0 :(得分:2)
1:使用Form Tag
创建表单<%= form_tag('/create_scaffold') do -%>
<div><%= submit_tag 'Create Scaffold' %></div>
<% end %>
2:编写匹配传入请求的路由。
match '/create_scaffold', to: 'examples#scaffold_generation', via: :all
3:
class ExamplesController < ApplicationController
def scaffold_generation
system "rails g scaffold TodoList task author"
system "rake db:migrate" #=> use this so that, it won't throw any errors.
render :text => "Whoa !!! Done"
end
end
答案 1 :(得分:1)
如果要创建按钮或链接,则应指向url路径,而不仅仅是帮助方法。快速解决此问题的方法是添加辅助方法的路径。
所以你可以试试
in helper
def scaffold_generation(url)
system "rails g scaffold TodoList task author"
url
end
并在视野中
<%= button_to "Scaffold Generation", scaffold_generation(root_path), :method => :get %>