Nested Comment wrong redirection.

comments_controller.rb

class CommentsController < ApplicationController
  before_action :find_commentable, only: %i[new create destroy]

  def new
    @comment = Comment.new
  end

  def create
    @comment = @commentable.comments.new(comment_params)
    if @comment.save
      flash[:success] = 'Comment successfully created'
      redirect_to @commentable
    else
      flash[:error] = 'Something went wrong'
      render 'new'
    end
  end

  def destroy
    @comment = @commentable.comments.find(params[:id])
    if @comment.destroy
      redirect_to @comment.commentable
      flash[:success] = 'Object was successfully deleted.'
    else
      redirect_to posts_path(@post)
      flash[:error] = 'Something went wrong'
    end
  end

  private

  def comment_params
    params.require(:comment).permit(:content)
  end

  def find_commentable
    @commentable = Post.find_by_id(params[:post_id]) if params[:post_id]
    @commentable = Comment.find_by_id(params[:comment_id]) if params[:comment_id]
  end
end