- @comment ||= Comment.new(commentable: @commentable)
.card.col-md-8.col-lg-7.mx-auto.float-none.white.z-depth-1.py-2.px-2
  .card-body
    - if content_for? :title
      %h1.h2-responsive.text-center
        %strong=yield :title
    = form_for(@comment, html: { class: "form-horizontal" }) do |f|
      - if @comment.errors.any?
        #error_explanation
          %h2
            = pluralize(@comment.errors.size, "error")
            prohibited this comment from being saved:
          %ul
            - @comment.errors.full_messages.each do |msg|
              %li= msg

      .md-form
        = f.text_area :body, rows: 6, class: 'form-control md-textarea', autofocus: 'autofocus', required: true, pattern: '\w+'
        = f.label :body, "Your comment:"

      %span.help-block
        = render partial: "shared/markdown_help"
      .actions.text-right
        = f.submit 'Post comment', class: 'btn btn-primary'
      .field
        = f.hidden_field :commentable_id, value: @commentable.id
        = f.hidden_field :commentable_type, value: @commentable.class.name