Ruby on rails 使用Omniauth和Desive为用户登录Rails应用程序创建密码

用户可以使用omniauth提供程序登录到我的Rails应用程序，但我只想为具有密码的用户启用某些功能

使用omniauth凭据创建用户时，其密码为空。当我尝试为omniauth用户创建密码时，会出现错误“当前密码不能为空”

如何为当前密码为“nil”的omniauth用户创建密码？

这是我目前用于编辑用户密码的表单：

<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name), :html => { :method => :put }) do |f| %>
     <%= devise_error_messages! %>

     <% if current_user.password != nil %>
           <div class="formField"><%= f.label :current_password, :class=>"label label-info " %> <br />
              <%= f.password_field :current_password %></div>
     <% else %>
             <%= f.hidden_field :current_password, :value => nil %>
     <% end %>

     <div class="formField"><%= f.label "New password", :class=>"label label-info" %> <br />
         <%= f.password_field :password, :autocomplete => "off" %>
     </div>

     <div class="formField"><%= f.label "New password confirmation", :class=>"label label-info" %><br />
         <%= f.password_field :password_confirmation %>
     </div>

     <div class="editAccountButtons">
         <%= f.submit "Update", :class=>"btn btn-small btn-info submitButton" %>
     </div>
<% end %>

---

这个问题回答了我的问题

这是我的最终控制员：

def update
        @user = User.find(current_user.id)
        force_updated = false

        successfully_updated = if needs_password?(@user, params)
            Rails.logger.debug('updating with password')
            @user.update_with_password(params[:user])
        else
            if resource.update_attributes(params[resource_name])
                force_updated = true
            end
        end

        if successfully_updated  || force_updated
            if params[:update_email]
                set_flash_message :alert, :signed_up_but_unconfirmed
                redirect_to after_update_path_for(@user)
            else            
                set_flash_message :notice, :updated
                sign_in @user, :bypass => true
                redirect_to after_update_path_for(@user)
            end
        else
            redirect_to :back, alert: resource.errors.full_messages[0]
        end
    end

def update
        @user = User.find(current_user.id)
        force_updated = false

        successfully_updated = if needs_password?(@user, params)
            Rails.logger.debug('updating with password')
            @user.update_with_password(params[:user])
        else
            if resource.update_attributes(params[resource_name])
                force_updated = true
            end
        end

        if successfully_updated  || force_updated
            if params[:update_email]
                set_flash_message :alert, :signed_up_but_unconfirmed
                redirect_to after_update_path_for(@user)
            else            
                set_flash_message :notice, :updated
                sign_in @user, :bypass => true
                redirect_to after_update_path_for(@user)
            end
        else
            redirect_to :back, alert: resource.errors.full_messages[0]
        end
    end