如何在 rails 6 中使用 simple_form 管理错误

Question

I have a form where I have added some validation, I would like the errors to be listed, I have an idea that it can be done this way.

  = simple_form_for(@post) do |f|
    .row.pt-4
      .col-lg-3  
        -if f.object.errors[:base].present?
          .alert.alert-danger
            %ul 
              %li= f.error_notification message: f.object.errors[:base].to_sentence

The problem I have is that the first error is listing it correctly, but the others are not.

example:

example with more errors

it should be displayed every error with a bullet point

Answer 1

You need to loop over the errors:

= simple_form_for(@post) do |f|
    .row.pt-4
      .col-lg-3  
        -if f.object.errors.any?
          .alert.alert-danger
            %ul
              = f.object.errors.each do |error| 
                %li= f.error_notification message: error.message