Ruby on rails RubyonRails:处理属于不同模型的表单
我有两个模型:Ruby on rails RubyonRails:处理属于不同模型的表单,ruby-on-rails,Ruby On Rails,我有两个模型:user和profile,我想使用相同的表单向它们输入数据 我在用户视图和控制器中工作。我有一个用户colums的工作表单。 但是,当涉及到概要文件模型时,如何从用户视图访问它 user.rb: class User < ActiveRecord::Base has_one :profile #....# end 编辑: 在渲染该视图的控制器中,需要传入一个概要文件对象,以便该视图使用。将@profile=@user.profile放
user
和profil
e,我想使用相同的表单向它们输入数据
我在用户
视图和控制器中工作。我有一个用户
colums的工作表单。
但是,当涉及到概要文件模型时,如何从用户视图访问它
user.rb:
class User < ActiveRecord::Base
has_one :profile
#....#
end
编辑:
在渲染该视图的控制器中,需要传入一个概要文件对象,以便该视图使用。将
@profile=@user.profile
放入控制器的new
方法可能很简单 你需要这样做
<% form_for [current_user, @profile] |f| do %>
#define the fields here
<% end %>
当我这样做时,我会收到以下错误消息:nil:NilClassWell的未定义方法'profile',那么它可能不是正确的方法。:)你的视图是否在正常情况下工作而不添加@profile内容?是的,我有一个带有表单的@user视图,它工作得非常好。我不了解的是如何通过用户视图填充配置文件模型。请告诉我们您在控制器中写了什么。您是否在用户控制器中定义了@profile。我仍然收到相同的错误消息:“未定义的方法'profile'for nil:NilClass”。我添加了一个带有标准“new”操作的“profiles”控制器,但它似乎没有帮助。您可以使用调试器并检查当前用户是否为nil吗?如果你能在这里打印你的跟踪信息会很有帮助。我已经添加了一些详细信息,这是你要求的吗?
<%= form_for @profile do |f| %>
<% if @profile.errors.any? %>
<div class="error_messages">
<h2>Form is invalid</h2>
<ul>
<% for message in @profile.errors.full_messages %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<%= f.label :height, "My height is: (cm)" %><%= f.select :height, options_for_select(140..220) %><br>
<%= f.submit "Next" %>
<% end %>
undefined method `model_name' for NilClass:Class
class ApplicationController < ActionController::Base
protect_from_forgery
private
def current_user
@current_user ||= User.find(session[:user_id]) if session[:user_id]
end
helper_method :current_user
end
app/controllers/users_controller.rb:27:in `new'
actionpack (3.2.8) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.2.8) lib/abstract_controller/base.rb:167:in `process_action'
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activesupport (3.2.8) lib/active_support/notifications.rb:123:in `block in instrument'
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activesupport (3.2.8) lib/active_support/notifications.rb:123:in `instrument'
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actionpack (3.2.8) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
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rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
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actionpack (3.2.8) lib/action_dispatch/middleware/cookies.rb:339:in `call'
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activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call'
actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `_run__4338139503461093137__call__2795110861990608974__callbacks'
activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.8) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.8) lib/active_support/callbacks.rb:81:in `run_callbacks'
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railties (3.2.8) lib/rails/rack/logger.rb:26:in `call_app'
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actionpack (3.2.8) lib/action_dispatch/middleware/request_id.rb:22:in `call'
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rack (1.4.1) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
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rack (1.4.1) lib/rack/content_length.rb:14:in `call'
railties (3.2.8) lib/rails/rack/log_tailer.rb:17:in `call'
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
/home/tim/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/home/tim/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/home/tim/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
<% form_for [current_user, @profile] |f| do %>
#define the fields here
<% end %>
def new
@profile = current_user.profile.new
end