Rails - 简单形式 Bootstrap - 显示内联错误的全文 -（或任何地方）

Question

我正在努力弄清楚如何使用带有 rails 5 的简单表单，以便我可以在我的表单中显示完整的错误消息。我得到的只是顶部的一个框，上面有一条消息：

Please review the problems below:

而不是问题列表或任何突出显示的表单字段 - 我没有得到任何东西。

我已遵循 this post 中的建议，并将初始化程序中所有对错误的引用替换为 'full_error'，但这仅解决了父表单的问题 - 嵌套字段仍然只是不完整错误信息。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

表格

<%= 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 %>

嵌套字段

<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，您在参数中采用了相同的变量 f，这可能会与父参数enter code hereter f

所以，

嵌套将是，

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

现在表格，

<%= 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 |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 %>

编辑：即使以上没有解决问题，

尝试从 @proposal 变量

中获取 ethics object 的错误

所以，

<%= f.simple_fields_for :ethics do |ff| %>
    <%= ff.error_notification %>
    <% @proposal.ethics.errors.full_messages.each do |msg| %>
    <%= li= msg %>
    <% end %>
    <%= render 'package/ethics/ethics_fields', f: f %>
<% end %>

Answer 2

您的错误显示代码中似乎混淆了 haml 和 erb。

这个：

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

应该看起来更像这样：

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

时有一个陷阱

您的模型中需要类似以下内容：

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

和

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

注意 has_many .. inverse_of 子句，它解决了 Rails 5.

中的一个错误

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

Answer 3

另一种选择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" %>

这将在标题字段旁边显示标题的错误消息。您可以将 f.error 方法添加到表单中的每个字段，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。这也将运行对关联模型进行验证。

Answer 4

要使其在默认情况下以简单形式内联工作，您必须使用 bootstrap_simple-form 并确保控制器中的所有内容都已正确设置。

查看我和 Hollownest 在这里给出的答案作为参考

Showing fields with errors for nested forms in Rails 3.2 + SimpleForm

Rails - 简单形式 Bootstrap - 显示内联错误的全文 -（或任何地方）

Rails - Simple Form Bootstrap - show full text of error inline - (or anywhere)

error-handling

ruby-on-rails

nested-forms

simple-form