I researched and there is another issue with the same title but the solution doesn’t help/apply.
Issue: Fields in simple_form don’t turn red despite validations are failing on saving the object – in this case updating. I tested it here with 6 fields failing validation on update. But no markings appear. I am used to seeing the fields in red when validations fail.
I am posting my edit view to help with things.
edit.html.erb:
<div class="row">
<div class="col-8 offset-2">
<%= link_to t('common.buttons.back'), home_company_path(id: current_company) %>
<%= simple_form_for @company, url: home_company_path do |f| %>
<div class="row">
<div class="w-100">
<div class="ibox float-e-margins">
<div class="ibox-title">
<h3>
<%= t('company.form.edit.title') %>
</h3>
</div>
<div class="ibox-content">
<% if @company.errors.any? %>
<div id="error_explanation">
<h4><%= t('activerecord.errors.models.company.prohibited_save', count: @company.errors.count) %></h4>
<ul>
<% @company.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<% if @company.persisted? %>
<%= hidden_field_tag :company_id, @company.id %>
<% end %>
<div class="form-group">
<%= f.label :name, t('company.form.name') %>
<%= f.text_field :name, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :company_type_id, t('company.form.company_type') %>
<%= f.collection_select(:company_type_id,
CompanyType.all,
:id,
:humanized_name,
{prompt: t('common.select_placeholder')},
{class: 'form-control', required: true}
) %>
</div>
<h3><%= t('company.form.header.address') %></h3>
<div class="form-group">
<%= f.label :street_and_no, required: true %>
<%= f.text_field :street_and_no, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :postal_code, required: true %>
<%= f.text_field :postal_code, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :city, required: true %>
<%= f.text_field :city, required: true, class: 'form-control' %>
</div>
<% if @company.is_eur? %>
<hr>
<h3><%= t('company.form.header.eur') %></h3>
<div class="form-group">
<%= f.label :name_for_eur %>
<%= f.text_field :name_for_eur, class: 'form-control' %>
<%= f.label :first_name_for_eur %>
<%= f.text_field :first_name_for_eur, class: 'form-control' %>
<%= f.label :eur_income_type %>
<%= f.text_field :eur_income_type, class: 'form-control' %>
<%= f.label :eur_business_owner %>
<%= f.text_field :eur_business_owner, class: 'form-control' %>
</div>
<% end %>
<hr>
<h3><%= t('company.form.header.service_level.title') %></h3>
<div class="form-group">
<p>
<%= f.label :service_level_id, t('company.form.service_level'), required: true %>
</p>
<table class="table">
<tr>
<th><%= t('company.form.header.service_level.functionality') %></th>
<th class="centered"><%= t('company.form.header.service_level.free') %></th>
<th class="centered"><%= t('company.form.header.service_level.advanced') %></th>
<th class="centered"><%= t('company.form.header.service_level.expert') %></th>
<th class="centered"><%= t('company.form.header.service_level.pro') %></th>
</tr>
<tr>
<td colspan="5"></td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_1.1') %></b></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_1.2') %></b></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_2') %></b></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_1.3') %></b></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_3a') %></b></td>
<td></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_3b') %></b></td>
<td></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_16') %></b></td>
<td></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_4') %></b></td>
<td class="centered"></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_5') %></b></td>
<td></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_6') %></b></td>
<td></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_7') %></b></td>
<td></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_8') %></b></td>
<td></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_9') %></b></td>
<td colspan="2"></td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_10') %></b></td>
<td colspan="2"></td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_11') %></b></td>
<td colspan="2"></td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_12') %></b></td>
<td colspan="3"></td>
<td class="centered">x</td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_14') %></b></td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
<td class="centered">x</td>
</tr>
<tr>
<td colspan="5"></td>
</tr>
<tr>
<td><b><%= t('company.form.header.service_level.functionality_15') %></b></td>
<td class="centered"><%= ServiceLevel::MAX_USER_COUNT[:free] %></td>
<td class="centered"><%= ServiceLevel::MAX_USER_COUNT[:advanced] %></td>
<td class="centered"><%= ServiceLevel::MAX_USER_COUNT[:expert] %></td>
<td class="centered"><%= t('company.form.header.service_level.functionality_random') %></td>
</tr>
</table>
<br>
<%= f.select :service_level_id, options_for_service_levels(@company), prompt: t('common.select_placeholder'), class: 'form-control', required: true %>
<br>
<b><%= t('company.index.price.title') %></b>
<ul>
<li><%= t('company.index.price.0.0') %>
<ul>
<li><%= t('company.index.price.0.1') %></li>
<li><%= t('company.index.price.0.2') %></li>
</ul>
</li>
<li><%= t('company.index.price.1') %></li>
<li><%= t('company.index.price.3') %></li>
<li><%= t('company.index.price.4') %></li>
<li><%= t('company.form.service_level_hint_2')%></li>
</ul>
</div>
<hr>
<h3><%= t('company.form.header.other_data') %></h3>
<% if @company.is_eur? %>
<div class="form-group">
<%= f.label :type_or_form %>
<%= f.text_field :type_or_form, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :legal_form %>
<%= f.text_field :legal_form, class: 'form-control' %>
</div>
<% end %>
<div class="form-group">
<%= f.label :phone %>
<%= f.text_field :phone, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :tax_number %>
<%= t('company.form.tax_hint') %>
<%= f.email_field :tax_number, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :amount_shareholders %>
<%= f.text_field :amount_shareholders, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :creditor_id %>
<%= f.text_field :creditor_id, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :vat_no %>
<%= f.text_field :vat_no, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :vat_standard_rate, t('company.form.vat_standard_rate') %>
<%= f.text_field :vat_standard_rate, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :registration_no %>
<%= f.text_field :registration_no, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :daily_report_element_count %>
(<%= t('activerecord.attributes.company.daily_report_element_count_hint')%>)
<%= f.text_field :daily_report_element_count, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :eur_check %>
<%= f.check_box :eur_check, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :fund_based %>
<%= f.check_box :fund_based, class: 'form-control' %>
</div>
<hr>
<h3><%= t('company.form.header.documents') %></h3>
<div class="form-group">
<%= f.label :notary_founding_document %>
<% if @company.notary_founding_document.attached? %>
<%= link_to @company.notary_founding_document.filename, rails_blob_path(@company.notary_founding_document, disposition: 'attachment') %>
<% end %>
<%= f.file_field :notary_founding_document, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :registration_document %>
<% if @company.registration_document.attached? %>
<%= link_to @company.registration_document.filename, rails_blob_path(@company.registration_document, disposition: 'attachment') %>
<% end %>
<%= f.file_field :registration_document, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :logo, t('company.form.logo') %>
<% if @company.logo.attached? %>
<%= link_to @company.logo.filename, rails_blob_path(@company.logo, disposition: 'attachment') %>
<% end %>
<%= f.file_field :logo, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :invoice_logo, t('company.form.invoice_logo') %>
<% if @company.invoice_logo.attached? %>
<%= link_to @company.invoice_logo.filename, rails_blob_path(@company.invoice_logo, disposition: 'attachment') %>
<% end %>
<%= f.file_field :invoice_logo, class: 'form-control' %>
</div>
<hr>
<div class="form-group">
<legend><%= t('company.form.tax_title') %></legend>
<div class="form-group">
<%= f.label :chancellery_name, t('company.form.chancellery_name') %>
<%= f.text_field :chancellery_name, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :chancellery_city, t('company.form.chancellery_city') %>
<%= f.text_field :chancellery_city, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :chancellery_email, t('company.form.chancellery_email') %>
<%= f.text_field :chancellery_email, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :chancellery_phone, t('company.form.chancellery_phone') %>
<%= f.text_field :chancellery_phone, required: true, class: 'form-control' %>
</div>
</div>
<div class="form-group">
<legend><%= t('company.form.show_in_overview_title') %></legend>
<div class="form-group">
<%= f.label :show_in_overview, t('company.form.show_in_overview') %>
<%= f.check_box :show_in_overview, class: 'form-control' %>
</div>
</div>
<% unless @company.agb_checked? && @company.system_invoice_checked? %>
<div class="form-group">
<legend>AGB & Datenschutzerklärung</legend>
<%= link_to t('company.form.agb_title'), '/agb.pdf', target: '_blank' %>
<%= f.label :agb_checked, t('company.form.agb_checked') %>
<%= f.check_box :agb_checked, required: true, class: 'form-control' %>
</div>
<div class="form-group">
<%= f.label :system_invoice_checked, t('company.form.system_invoice_checked') %>
<%= f.check_box :system_invoice_checked, class: 'form-control' %>
</div>
<% end %>
<div class="form-group">
<%= f.submit t("common.same_pattern_buttons.#{@company.new_record? ? :create : :update}", model_name: model_name_translation(:company)), class: 'btn btn-primary' %>
</div>
</div>
</div>
</div>
</div>
<% end %>
</div>
</div>