app/views/classrooms/_form.html.erb
<%= form_for (@classroom) do |f| %>
<% if @classroom.errors.any? %>
<div class="container">
<div class="text-danger">
<div id="error_explanation">
<h2 class=""><%= pluralize(@classroom.errors.count, "erro proibiu", "erros proibiram") %> este formulario de ser salvo:</h2>
<ul>
<% @classroom.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
</div>
</div>
<% end %>
<div class="form-group">
<%= f.label :name_classroom, class:"sr-only" %>
<div class="input-group">
<span class="input-group-addon">
<span class="fa fa-sticky-note"></span>
Nome da turma
</span>
<%= f.text_field :name_classroom, class:"form-control", placeholder:"Exemplo: D ou A" %>
</div>
</div>
<div class="form-group">
<%= f.label :classroom_id, class:"sr-only", id: "sel1" %>
<div class="input-group">
<span class="input-group-addon">
<span class="fa fa-television"></span>
Série
</span>
<%= f.select :classroom_grade_id, @classroom_grades.collect {|classroom_grade| [classroom_grade.name_classroom_grade, classroom_grade.id]}, {:include_blank => false}, {:class => "form-control", :id => "sel1"}%>
</div>
</div>
<div class="form-group">
<%= f.label :classroom_id, class:"sr-only", id: "sel1" %>
<div class="input-group">
<span class="input-group-addon">
<span class="fa fa-clock-o"></span>
Turno
</span>
<%= f.select :shift_id, @shifts.collect {|shift| [shift.name_shift, shift.id]}, {:include_blank => false}, {:class => "form-control", :id => "sel1"}%>
</div>
</div>
<%= f.button '<span class="fa fa-check"></span> Salvar'.html_safe, type:"submit", class:'btn btn-lg btn-success' %>
<% end %>