In this post, slice function is used to get only necessary elements of params. What would be the function I should use to exclude an element of params (such as user_id)?
在这篇文章中，切片函数用于仅获取参数的必要元素。我应该使用什么函数来排除params元素（例如user_id）？
Article.new(params[:article].slice(:title, :body))
Thank you.
谢谢。
2 个解决方案
#1
52
Use except:
使用除外：
a = {"foo" => 0, "bar" => 42, "baz" => 1024 }
a.except("foo")
# returns => {"bar" => 42, "baz" => 1024}
#2
1
Try this
尝试这个
params = { :title => "title", :other => "other", :body => "body" }
params.select {|k,v| [:title, :body].include? k } #=> {:title => "title", :body => "body"}
#1
52
Use except:
使用除外：
a = {"foo" => 0, "bar" => 42, "baz" => 1024 }
a.except("foo")
# returns => {"bar" => 42, "baz" => 1024}
#2
1
Try this
尝试这个
params = { :title => "title", :other => "other", :body => "body" }
params.select {|k,v| [:title, :body].include? k } #=> {:title => "title", :body => "body"}