growstuff/app/views/posts/_form.html.haml

.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(@post, html: { role: "form" }) do |f|
      - if @post.errors.any?
        #error_explanation
          %h2
            = pluralize(@post.errors.size, "error")
            prohibited this post from being saved:
          %ul
            - @post.errors.full_messages.each do |msg|
              %li= msg

      .form-group
        = label_tag :post, "Subject", class: 'control-label'
        = f.text_field :subject, class: 'form-control', autofocus: 'autofocus', maxlength: 255

      .form-group
        - if @post.forum || @forum
          = label_tag :body, "What's up?", class: 'control-label'
        - else
          = label_tag :body, "What's going on in your food garden?"
        = f.text_area :body, rows: 12, class: 'form-control'
        %span.help-block
          = render partial: "shared/markdown_help"

      - if @post.forum || @forum
        - forum = @post.forum || @forum
        %p
          This post will be posted in the forum
          = link_to forum.name, forum
        .field
          = f.hidden_field :forum_id, value: forum.id

      = f.submit "Post", class: 'btn btn-primary'