Rails 7.1: implementing handling nested attributes for polymorphic associations leading to validation errors
I'm collaborating on a project where Does anyone know how to I've been struggling with this for a few days now and could really use some help. I'm learning this framework and I'm working with a scenario with nested attributes for a polymorphic association in my Rails 7.1 application. I have a `Comment` model that can belong to either a `Post` or an `Image`. My `Comment` model is set up like this: ```ruby class Comment < ApplicationRecord belongs_to :commentable, polymorphic: true validates :content, presence: true end ``` In my `Post` and `Image` models, I have the following associations: ```ruby class Post < ApplicationRecord has_many :comments, as: :commentable accepts_nested_attributes_for :comments end class Image < ApplicationRecord has_many :comments, as: :commentable accepts_nested_attributes_for :comments end ``` When I try to create a new `Post` along with its comments using nested attributes, I'm getting the following behavior: ``` ActiveRecord::RecordInvalid: Validation failed: Comments content need to be blank ``` Here's how I am attempting to create a new post with comments in my controller: ```ruby def create @post = Post.new(post_params) if @post.save redirect_to @post, notice: 'Post created successfully!' else render :new end end private def post_params params.require(:post).permit(:title, :body, comments_attributes: [:content]) end ``` In my form view, I have: ```erb <%= form_with(model: @post) do |form| %> <%= form.text_field :title %> <%= form.text_area :body %> <%= form.fields_for :comments do |comment_fields| %> <%= comment_fields.text_area :content %> <% end %> <%= form.submit 'Create Post' %> <% end %> ``` I've confirmed that the comments are indeed being sent in the correct format, as I can see them in the server logs: ``` Parameters: {"post"=>{"title"=>"My Post", "body"=>"This is a body", "comments_attributes"=>[{"content"=>"First comment"}]}} ``` However, when I submit the form, it seems like the `Comment` validations are not picking up the content from the nested attributes. I've tried using `accepts_nested_attributes_for :comments, reject_if: :all_blank`, but that didn't resolve the validation scenario. Any insights on how to properly handle this scenario? Am I missing something in how nested attributes for polymorphic associations work? My team is using Ruby for this microservice. Thanks for taking the time to read this!