该应用程序可以在Rails控制台中正常工作，因为我可以创建一个有效用户并将其保存到数据库，并且可以通过模型验证来拒绝使用无效输入创建的用户。我还可以使用user.errors.full_messages显示错误消息。因此，在控制台上，一切看起来都很好。但是，当我在开发环境中的应用程序中重复此操作时，不会将有效用户保存到数据库，并且不会收到无效用户的错误消息。
这适用于使用webpacker 4.0.2，postgres 11和puma 3.12.1的Rails 6.0.0rc1应用程序。 Ruby 2.6.3
这是用户模型
class User < ApplicationRecord
before_save { self.email = email.downcase }
validates :first_name, presence: true, length: { maximum: 50 }
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
validates :email, presence: true, length: { maximum: 255 },
format: { with: VALID_EMAIL_REGEX },
uniqueness: { case_sensitive: false }
has_secure_password
validates :password, presence: true, length: { minimum: 6 }
end
这是用户控制器
class UsersController < ApplicationController
def show
@user = User.find(params[:id])
end
def new
@user = User.new
end
def create
@user = User.new(user_params)
if @user.save
flash[:success] = "Welcome to the Option Trader."
redirect_to @user
else
render 'new'
end
end
private
def user_params
params.require(:user).permit(:first_name, :email, :password,
:password_confirmation)
end
end
这是用户新页面（.html.erb）
<div class="container">
<div class="row">
<div class="col-md-6 offset-md-3">
<form>
<%= form_for(@user) do |form| %>
<%= render 'shared/error_messages' %>
<div class="form-group">
<%= form.label :first_name %>
<%= form.text_field :first_name, class: "form-control" %>
</div>
<div class="form-group">
<%= form.label :email %>
<%= form.email_field :email, class: "form-control" %>
</div>
<div class="form-group">
<%= form.label :password %>
<%= form.password_field :password, class: "form-control", bootstrap: {help: "Must be at least 6 characters long"} %>
</div>
<div class="form-group">
<%= form.label :password_confirmation %>
<%= form.password_field :password_confirmation, class: "form-control" %>
</div>
<div class="text-center">
<%= form.submit "Create my account", class: "btn btn-primary btn-lg" %>
</div>
<% end %>
</form>
</div>
</div>
</div>
我希望看到用户模型支持的错误消息显示在用户新页面上，以显示无效数据并将有效用户保存到数据库中。
这是来自development.log：
DEPRECATION WARNING: Single arity template handlers are deprecated. Template handlers must
now accept two parameters, the view object and the source for the view object.
Change:
>> JbuilderHandler.call(template)
To:
>> JbuilderHandler.call(template, source)
(called from <top (required)> at /home/steve/justmoneymatters/optiontrader/config/environment.rb:5)
Started GET "/" for 127.0.0.1 at 2019-05-09 09:38:48 +1000
[1m[35m (1.3ms)[0m [1m[34mSELECT "schema_migrations"."version" FROM "schema_migrations" ORDER BY "schema_migrations"."version" ASC[0m
Processing by StaticPagesController#home as HTML
Rendering static_pages/home.html.erb within layouts/application
Rendered static_pages/home.html.erb within layouts/application (Duration: 0.9ms | Allocations: 570)
Rendered layouts/_header.html.erb (Duration: 847.1ms | Allocations: 1457853)
Rendered layouts/_footer.html.erb (Duration: 0.5ms | Allocations: 260)
Completed 200 OK in 859ms (Views: 853.9ms | ActiveRecord: 0.0ms | Allocations: 1461950)
Started GET "/signup" for 127.0.0.1 at 2019-05-09 09:39:20 +1000
Processing by UsersController#new as HTML
Rendering users/new.html.erb within layouts/application
Rendered shared/_error_messages.html.erb (Duration: 0.4ms | Allocations: 206)
Rendered users/new.html.erb within layouts/application (Duration: 8.3ms | Allocations: 3495)
Rendered layouts/_header.html.erb (Duration: 0.6ms | Allocations: 718)
Rendered layouts/_footer.html.erb (Duration: 0.1ms | Allocations: 92)
Completed 200 OK in 24ms (Views: 10.6ms | ActiveRecord: 5.0ms | Allocations: 10945)
Started GET "/signup?authenticity_token=YJylg%2FLP8ffZQJ%2Fsa96tHo9B7aDWNgKQlWkYwcMIiFMtKILokHKTKw60l87VmgUr1pXCw5qzUZTCULU9XxG4CA%3D%3D&user%5Bfirst_name%5D=Stephen&user%5Bemail%5D=stevewill5859%40gmail.com&user%5Bpassword%5D=[FILTERED]&user%5Bpassword_confirmation%5D=[FILTERED]&commit=Create+my+account" for 127.0.0.1 at 2019-05-09 09:39:44 +1000
Processing by UsersController#new as HTML
Parameters: {"authenticity_token"=>"YJylg/LP8ffZQJ/sa96tHo9B7aDWNgKQlWkYwcMIiFMtKILokHKTKw60l87VmgUr1pXCw5qzUZTCULU9XxG4CA==", "user"=>{"first_name"=>"Stephen", "email"=>"stevewill5859@gmail.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Create my account"}
Rendering users/new.html.erb within layouts/application
Rendered shared/_error_messages.html.erb (Duration: 0.1ms | Allocations: 15)
Rendered users/new.html.erb within layouts/application (Duration: 2.8ms | Allocations: 1071)
Rendered layouts/_header.html.erb (Duration: 0.8ms | Allocations: 710)
Rendered layouts/_footer.html.erb (Duration: 0.1ms | Allocations: 89)
Completed 200 OK in 7ms (Views: 5.7ms | ActiveRecord: 0.0ms | Allocations: 3119)
I run server using
foreman start -f Procfile.dev
Procfile.dev file is
web：捆绑执行程序puma -C config / puma.rb webpacker：./bin/webpack-dev-server
routes.rb
Rails.application.routes.draw做 根'static_pages＃home' 获取“ / subscribe”，至：“ static_pages＃subscribe” 获取“ / legal”，至：“ static_pages＃legal” 获取“ / privacy”，至：“ static_pages＃privacy” 获取“ / about”，至：“ static_pages＃about” 获得“ /敏感性”，以：“ static_pages＃敏感性” 获取'/ option'，以：'static_pages＃option' 获取“ / volatility”，至：“ static_pages＃volatility” 获取“ / strategy”，至：“ static_pages＃strategy” 获取“ / signup”，至：“ users＃new” 资源：用户 结束
Thank you for your help so far,
I have to admit to being confused over
this especially as it works fine in rails
console - I am able to create new users
that are saved to the database and get the
expected error messages when i try to save
an invalid user
Rails.application.routes.draw do
root 'static_pages#home'
get '/subscribe', to: 'static_pages#subscribe'
get '/legal', to: 'static_pages#legal'
get '/privacy', to: 'static_pages#privacy'
get '/about', to: 'static_pages#about'
get '/sensitivity', to: 'static_pages#sensitivity'
get '/option', to: 'static_pages#option'
get '/volatility', to: 'static_pages#volatility'
get '/strategy', to: 'static_pages#strategy'
get '/signup', to: 'users#new'
resources :users
end
I resolved the issue by removing the <form></form> element tags from the users#new view template. I don't know why it worked but it did.
答案 0 :(得分：0)
我通过移除