Controller 语法 Ruby on Rails 6

Question

Having an issue with displaying only three posts on a page. Here is the closest I've gotten to getting the controller working with a param.

def index

    @Post = Post.all

    @Posts = Post.find.limit('3').order('date_posted')

  end

This is rendering a syntax error of sorts because it wants an ID, but I don't want to give it an ID, I want it to find the three most recent posts. How should I go about that?

Answer 1

Try this way

def index
  @recent_posts = Post.limit(3).order(date_posted: :desc)
end

What's wrong in your code

• all gives you all the objects for a model
• find and find_by give you just one object which meet the id passed to find or the first one which meets the conditions passed to find_by