Question

我正在努力弄清楚如何在rails 5中使用简单的表单，这样我就可以在表单中显示完整的错误消息。我得到的只是顶部的一个方框，上面写着：

Please review the problems below:

而不是问题列表或任何突出显示的表单字段 - 我什么也得不到。

我已按照this post中的建议，并使用＆＃39; full_error＆＃39;替换了初始化程序中对错误的所有引用，但这只解决了父表单的问题 - 嵌套字段仍然只是得到了不完整的错误消息有谁知道如何以简单的形式识别错误？

# Use this setup block to configure all options available in SimpleForm.
SimpleForm.setup do |config|
  config.error_notification_class = 'alert alert-danger'
  config.button_class = 'btn btn-green'
  config.boolean_label_class = nil

  config.wrappers :vertical_form, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.use :placeholder
    b.optional :maxlength
    b.optional :pattern
    b.optional :min_max
    b.optional :readonly
    b.use :label, class: 'control-label'

    b.use :input, class: 'form-control'
    b.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
    b.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
  end

  config.wrappers :vertical_file_input, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.use :placeholder
    b.optional :maxlength
    b.optional :readonly
    b.use :label, class: 'control-label'

    b.use :input
    b.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
    b.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
  end

  config.wrappers :vertical_boolean, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.optional :readonly

    b.wrapper tag: 'div', class: 'checkbox' do |ba|
      ba.use :label_input
    end

    b.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
    b.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
  end

  config.wrappers :vertical_radio_and_checkboxes, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.optional :readonly
    b.use :label, class: 'control-label'
    b.use :input
    b.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
    b.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
  end

  config.wrappers :horizontal_form, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.use :placeholder
    b.optional :maxlength
    b.optional :pattern
    b.optional :min_max
    b.optional :readonly
    b.use :label, class: 'col-sm-3 control-label'

    b.wrapper tag: 'div', class: 'col-sm-9' do |ba|
      ba.use :input, class: 'form-control'
      ba.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
      ba.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
    end
  end

  config.wrappers :horizontal_file_input, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.use :placeholder
    b.optional :maxlength
    b.optional :readonly
    b.use :label, class: 'col-sm-3 control-label'

    b.wrapper tag: 'div', class: 'col-sm-9' do |ba|
      ba.use :input
      ba.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
      ba.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
    end
  end

  config.wrappers :horizontal_boolean, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.optional :readonly

    b.wrapper tag: 'div', class: 'col-sm-offset-3 col-sm-9' do |wr|
      wr.wrapper tag: 'div', class: 'checkbox' do |ba|
        ba.use :label_input
      end

      wr.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
      wr.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
    end
  end

  config.wrappers :horizontal_radio_and_checkboxes, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.optional :readonly

    b.use :label, class: 'col-sm-3 control-label'

    b.wrapper tag: 'div', class: 'col-sm-9' do |ba|
      ba.use :input
      ba.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
      ba.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
    end
  end

  config.wrappers :inline_form, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.use :placeholder
    b.optional :maxlength
    b.optional :pattern
    b.optional :min_max
    b.optional :readonly
    b.use :label, class: 'sr-only'

    b.use :input, class: 'form-control'
    b.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
    b.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
  end

  config.wrappers :multi_select, tag: 'div', class: 'form-group', error_class: 'has-error' do |b|
    b.use :html5
    b.optional :readonly
    b.use :label, class: 'control-label'
    b.wrapper tag: 'div', class: 'form-inline' do |ba|
      ba.use :input, class: 'form-control'
      ba.use :full_error, wrap_with: { tag: 'span', class: 'help-block' }
      ba.use :hint,  wrap_with: { tag: 'p', class: 'help-block' }
    end
  end
  # Wrappers for forms and inputs using the Bootstrap toolkit.
  # Check the Bootstrap docs (http://getbootstrap.com)
  # to learn about the different styles for forms and inputs,
  # buttons and other elements.
  config.default_wrapper = :vertical_form
  config.wrapper_mappings = {
    check_boxes: :vertical_radio_and_checkboxes,
    radio_buttons: :vertical_radio_and_checkboxes,
    file: :vertical_file_input,
    boolean: :vertical_boolean,
    datetime: :multi_select,
    date: :multi_select,
    time: :multi_select
  }
end

FORM

<%= simple_form_for(@proposal) do |f| %>
  <%= f.error_notification %>

 <% @proposal.errors.full_messages.each do |msg| %>
    <%= li= msg %>
 <% end %>



  <div class="form-inputs" style="margin-bottom: 50px">
  <!--   General Organisation details -->
    <div class="row">
      <div class="col-md-12">
        <%= f.input :title, :label => "Title" %>

      </div>
    </div>
    <div class="row">
      <div class="col-md-12">
        <%= f.input :byline, :label => "Tagline" %>
      </div>
    </div>

    <div class="row">
      <div class="col-md-12">
        <%= f.input :description, as: :text, :label => "Outline your proposal", input_html: { rows: 15 } %>
      </div>
    </div>




  <!--   Package: :ethics considerations -->
  <div class="row">
    <div class="col-md-12">
      <div class="form_title">Research Ethics</div>
    </div>
  </div>

  <div class="row">
    <div class="col-md-12">

    <%= f.simple_fields_for :ethics do |f| %>
      <%= f.error_notification %>
        <%= render 'package/ethics/ethics_fields', f: f %>

    <% end %>

    <%= link_to_add_association 'Add another ethics issue', f, :ethics, partial: 'package/ethics/ethics_fields' %>
    </div>
  </div>


  </div>

  <div class="row">
    <div class="col-md-10 col-md-offset-1" style="margin-top: 50px">
      <div class="form-actions">
        <%= f.button :submit %>
      </div>
    </div>
  </div>
<% end %>

NESTED FIELDS

<div class="nested-fields">

    <%# @proposal.ethics.errors.full_messages.each do |e| %>
        <li><%#=  e  %></li>
    <%# end %>
    <div class="form-inputs">
      <div class="row">
          <div class="col-md-12 ">
          <%= f.select :category, [ "Risk of harm", "Informed consent", "Anonymity and Confidentiality", "Deceptive practices", "Right to withdraw"], { label: "Principle" }, id: "main_category" %>
          <%= f.select :subcategory, [], {}, id: "sub_category", disabled: true %>
          <%= f.input :consideration, as: :text, :label => "Identify the ethics considerations?",  :input_html => {:rows => 8} %>
          <%= f.input :plan, as: :text, :label => "How will these considerations be managed?",  :input_html => {:rows => 8} %>
        </div>
      </div>
  </div>
  <div class="row">
      <div class="col-md-6" style="margin-top: 20px; margin-bottom: 50px">
        <%= link_to_remove_association 'Remove this ethical issue', f %>
      </div>

  </div>
</div>

Answer 1

我在您的代码中发现的第一个错误是，在您的嵌套字段中，您在参数中使用了相同的变量f，这可能会被父参数enter code here {{1} }

所以，

嵌套将是，

现在是表格，

<%= f.simple_fields_for :ethics do |ff| %>
      <%= ff.error_notification %>
      <%= render 'package/ethics/ethics_fields', f: f %>
<% end %>

编辑：即使上述问题无法解决问题，

尝试从<%= simple_form_for(@proposal) do |f| %> <%= f.error_notification %> <% @proposal.errors.full_messages.each do |msg| %> <%= li= msg %> <% end %> <div class="form-inputs" style="margin-bottom: 50px">  <div class="row"> <div class="col-md-12"> <%= f.input :title, :label => "Title" %> </div> </div> <div class="row"> <div class="col-md-12"> <%= f.input :byline, :label => "Tagline" %> </div> </div> <div class="row"> <div class="col-md-12"> <%= f.input :description, as: :text, :label => "Outline your proposal", input_html: { rows: 15 } %> </div> </div>  <div class="row"> <div class="col-md-12"> <div class="form_title">Research Ethics</div> </div> </div> <div class="row"> <div class="col-md-12"> <%= f.simple_fields_for :ethics do |ff| %> <%= ff.error_notification %> <%= render 'package/ethics/ethics_fields', f: ff %> <% end %> <%= link_to_add_association 'Add another ethics issue', f, :ethics, partial: 'package/ethics/ethics_fields' %> </div> </div> </div> <div class="row"> <div class="col-md-10 col-md-offset-1" style="margin-top: 50px"> <div class="form-actions"> <%= f.button :submit %> </div> </div> </div> <% end %> <%= f.simple_fields_for :ethics do |ff| %> <%= ff.error_notification %> <%= render 'package/ethics/ethics_fields', f: ff %> <% @proposal.ethics.errors.full_messages.each do |msg| %> <%= li= msg %> <% end %> <% end %>变量

中获取ethics object中的错误

所以，

@proposal

Answer 2

看起来你的haml和erb在显示代码的错误中混淆了。

此：

 <% @proposal.errors.full_messages.each do |msg| %>
   <%= li= msg %>
 <% end %>

看起来应该更像这样：

<% if @proposal.errors.any? %>
<ul>
<% @proposal.errors.full_messages.each do |msg| %>
  <li><%= msg %></li>
</ul>
<% end %>

我猜你正在使用Cocoon所以你需要正确设置它，但是在使用Rails 5时会有一些问题。

您的模型中需要以下内容：

class Proposal < ApplicationRecord
  has_many: :ethics, inverse_of: :proposal
  accepts_nested_attributes_for :ethics ...
...

和

class Ethic < ApplicationRecord
  belongs_to :proposal, inverse_of: :ethics
...

请注意has_many .. inverse_of子句可以解决Rails 5中的错误。

如果正确设置accepts_nested_attributes_for子句，我认为@ proposal.errors应该包含表单的所有错误。

Answer 3

另一个选项可能是直接在字段中显示错误消息。

<%= f.input :title, :label => "Title", id:"title" %>
<%= f.error :title, :id => "title_error" %>

这将显示标题字段旁边标题的错误消息。您可以向表单中的每个字段添加f.error方法，而不是在表单上方显示<ul>，或者在表单上方显示<ul>。

对于nested_form_fields，尝试将validates_associated :assoc_model_name添加到主模型中。这也将为相关模型运行验证。

Rails - 简单表单引导程序 - 显示内联错误的全文 - （或任何地方）

3 个答案: