Rails Nested form validation errors -

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i have simple scenario articles , comments. article has comments.

in article show action display article , form add comment.

when comment submitted triggers comments#create action.

when save successful redirects article show action. works fine.

my question when save not successful action should taken?

normally use: "render edit" in case have no comments#edit action.

class articlescontroller < applicationcontroller   def show     @article article.find(params[:id])     @comments = @article.comments.order(created_at: :asc).page(params[:page]).per_page(5)     @comment = comment.new   end end  class commentscontroller < applicationcontroller   def create     @article = article.find(params[:id])     @comment = @article.comments.new(discussion_params)     @comment.user_id = current_user.id      if @comment.save       redirect_to @article     else       render ???     end   end    private      def discussion_params       params.require(:comment).permit(:content)     end end

_form.html.erb

<%= form_for([@article, comment.new], html: { class: "comment-form", id: "comment-form" }) |f| %>   <%= render 'shared/error_messages', object: f.object %>   <%= f.text_area :content, placeholder: "add comment...", rows: 3, minlength: 10, maxlength: 1000 %>   <button class="btn btn-success" type="submit">post comment</button> <% end %>

try this.

 render 'articles/show'

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