修改

Question

我创建了一个部分表单，用于注册新用户或编辑用户。问题出在提交按钮文本值。如何正确检查用户是否正在创建或编辑表单，因此按钮文本值可以是“注册或更新”

我正在使用

Ruby 2.1.5
Rails 4
Devise gem

这是我的表格：

<%= form_for(resource, as: resource_name, url: registration_path(resource_name))  do |f| %>
    <%= devise_error_messages! %>

    <div class="form-group">
      <%= f.label :email, class: 'control-label' %>*<br />
      <%= f.email_field :email, autofocus: true, class: 'form-control' %>
      <span class="help-block"></span>
    </div>

    <div class="form-group">
      <%= f.label :username, class: 'control-label' %>*<br />
      <%= f.text_field :username, class: 'form-control' %>
      <span class="help-block"></span>
    </div>

    <div class="form-group">
      <%= f.label :password, class: 'control-label' %>*
      <% if @validatable %>
          <em>(<%= @minimum_password_length %> characters minimum)</em>
      <% end %><br />
      <%= f.password_field :password, autocomplete: 'off', class: 'form-control' %>
      <span class="help-block"></span>
    </div>

    <div class="form-group">
      <%= f.label :password_confirmation, class: 'control-label' %>*<br />
      <%= f.password_field :password_confirmation, autocomplete: 'off', class: 'form-control' %>
      <span class="help-block"></span>
    </div>

    <hr>

    <div class="form-group">
      <%= f.label :name, class: 'control-label' %>*<br />
      <%= f.text_field :name, autocomplete: 'on', class: 'form-control' %>
      <span class="help-block"></span>
    </div>

    <div class="form-group">
      <%= f.label :last_name, class: 'control-label' %>*<br />
      <%= f.text_field :last_name, autocomplete: 'on', class: 'form-control' %>
      <span class="help-block"></span>
    </div>
    <div class="form-group">
      <%= f.label :address, class: 'control-label' %>*<br />
      <%= f.text_field :address, autocomplete: 'on', class: 'form-control' %>
      <span class="help-block"></span>
    </div>
    <div class="form-group">
      <%= f.label :post_number, class: 'control-label' %>*<br />
      <%= f.text_field :post_number, autocomplete: 'on', class: 'form-control' %>
      <span class="help-block"></span>
    </div>
    <div class="form-group">
      <%= f.label :city, class: 'control-label' %>*<br />
      <%= f.text_field :city, autocomplete: 'on', class: 'form-control' %>
      <span class="help-block"></span>
    </div>
    <div class="form-group">
      <%= f.label :mobile, class: 'control-label' %>*<br />
      <%= f.text_field :mobile, autocomplete: 'on', class: 'form-control' %>
      <span class="help-block"></span>
    </div>
    <div>
      <%= f.label :country_id, class: 'control-label' %><br />
      <%= f.select(:country_id, options_from_collection_for_select(Country.all, :id, :name), {}, { :class => 'form-control'}) %>
      <span class="help-block"></span>
    </div>
    <br>
    <div class="actions">
      <%= f.submit 'Sign up', class: 'btn btn-default' %>
    </div>
<% end %>

所以我想检查这是否是新记录，或者用户只是像这个例子一样编辑记录：

<%= f.submit @user.new_record? ? 'Sign up' : 'Update', class: 'btn btn-default' %>

Answer 1

我认为你是在正确的道路上。您还可以检查当前操作以选择按钮的名称：

<%= f.submit "#{['edit', 'update'].include? params[:action] ? 'Update' : 'Sign up'}", class: 'btn btn-default' %>

修改

您实际上可以将其保留为<%= f.submit class: 'btn btn-default' %>，Rails会知道它的操作是什么，并将提交称为'Create User'或'Update User'。

Answer 2

我发现了如何做到这一点。你只需要调用resource.new_record？

  <%= f.submit resource.new_record? ? 'Sign up' : 'Update', class: 'btn btn-default' %>

Rails根据动作设计gem部分表单提交按钮文本值

2 个答案:

修改