在页面上，系统会提示用户输入其位置，Twitter屏幕名称，Facebook URL和LinkedIn URL。缺少哪些不允许将其保存在数据库中？
用户模型（user.rb）：
class User < ActiveRecord::Base
has_many :chatpost, dependent: :destroy
before_save { self.email = email.downcase }
before_create :create_remember_token
attr_accessor :twitter_id, :facebook, :linkedin, :location
validates :name, presence: true, length: { maximum: 50 }
VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true, format: { with: VALID_EMAIL_REGEX }, uniqueness: { case_sensitive: false }
has_secure_password
validates :password, length: { minimum: 6 }, :unless => lambda{ |user| user.password.blank? }
# Convert user's name to friendly url format
def slug
name.downcase.gsub(" ", "-")
end
# Change default param for user from id to id-name for friendly urls.
# When finding in DB, Rails auto calls .to_i on param, which tosses
# name and doesn't cause any problems in locating user.
def to_param
"#{id}-#{slug}"
end
def User.new_remember_token
SecureRandom.urlsafe_base64
end
def User.encrypt(token)
Digest::SHA1.hexdigest(token.to_s)
end
private
def create_remember_token
self.remember_token = User.encrypt(User.new_remember_token)
end
end
用户控制器（users_controller.rb）：
class UsersController < ApplicationController
before_action :signed_in_user, only: [:index, :edit, :update, :destroy]
before_action :correct_user, only: [:edit, :update]
before_action :admin_user, only: :destroy
skip_before_filter :require_login, :only => [:new, :create]
def index
@user
end
def show
# TODO: Redirect to canonical lins if slugs change
# see: http://code-worrier.com/blog/custom-slugs-in-rails/
@user = User.find(params[:id])
end
def new
#redirect if we are already signed in
if signed_in?
flash[:notice] = "Already signed in"
redirect_to root_path
end
#create a new variable to hold User params
@user = User.new
end
def create
@user = User.new(user_params)
#Make the first user created a super user
if User.count == 0
@user[:super_user] = true
else
@user[:super_user] = false
end
if @user.save
sign_in @user
flash[:success] = "Welcome to LivePost!"
redirect_to chatlogs_path
else
render 'new'
end
end
def edit
@user = User.find(params[:id])
end
def update
params[:user].delete(:password) if params[:user][:password].blank?
if @user.update_attributes(params[:user].permit(:name, :email, :password, :password_confirmation, :twitter_id, :facebook, :linkedin, :location))
flash[:success] = "Profile updated"
redirect_to @user
else
render 'edit'
end
end
def destroy
User.find(params[:id]).destroy
flash[:success] = "User deleted."
redirect_to root_path
end
private
def user_params
params.require(:user).permit(:name, :email, :password, :password_confirmation, :twitter_id, :facebook, :linkedin, :location)
end
# Before filters
def signed_in_user
unless signed_in?
store_location
redirect_to signin_url, notice: "Please sign in."
end
end
def correct_user
@user = User.find(params[:id])
redirect_to(root_url) unless current_user?(@user)
end
def admin_user
redirect_to(root_url) unless current_user.admin?
end
end
用户帮助程序（users_helper.rb）：
module UsersHelper
# Returns the Gravatar for the given user (see: http://gravatar.com/)
def gravatar_for(user)
gravatar_id = Digest::MD5::hexdigest(user.email.downcase)
gravatar_url = "https://secure.gravatar.com/avatar/#{gravatar_id}"
image_tag gravatar_url, alt: user.name, class: "gravatar"
end
def twitter_for(user)
user.twitter_id ? "https://www.twitter.com/#{user.twitter_id}" : ""
end
def facebook_for(user)
#{user.facebook}
end
def linkedin_for(user)
#{user.linkedin}
end
end
用户个人资料编辑（views / users / edit.html.erb）：
<% provide(:title, 'Edit profile') %>
<div class="showuser">
<row>
<div class="col-md-6 col-md-offset-3" style="margin-top: 6%;">
<div class="panel panel-default" style="padding-bottom: 15px;padding-left: 10px;">
<div class="panel panel-body">
<h3 class="form-signin-heading" align="center"><b><%= @user.name.titleize %>'s profile</b></h3>
<%= form_for @user, class: "form-signin" do |f| %>
<%= form_tag :action => 'update', :id => @user %>
<%= render 'shared/error_messages', object: f.object %>
<div align="left"><span class="label label-default">Email</span></div>
<%= f.text_field :email, class: "form-control", disabled: true, style: "color: #999;" %>
<div class="panel-group" id="accordion">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
General User Information
</a>
</h4>
</div>
<div id="collapseOne" class="panel-collapse collapse in">
<div class="panel-body">
<div align="left"><span class="label label-default">Name</span></div>
<%= f.text_field :name, class: "form-control", placeholder: "Your name" %>
<div align="left"><span class="label label-default">Location</span></div>
<%= f.text_field :location, class: "form-control", placeholder: "Your location" %>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
Avatar
</a>
</h4>
</div>
<div id="collapseTwo" class="panel-collapse collapse">
<div class="panel-body">
<div>
<%= gravatar_for @user %>
<a href="http://gravatar.com/emails">Change avatar</a>
</div>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
Social Media
</a>
</h4>
</div>
<div id="collapseThree" class="panel-collapse collapse">
<div class="panel-body">
<div align="left"><span class="label label-default">Twitter</span></div>
<%= f.text_field :twitter_id, class: "form-control", placeholder: "Twitter username" %>
<div align="left"><span class="label label-default">Facebook</span></div>
<%= f.text_field :facebook, class: "form-control", placeholder: "Facebook profile URL" %>
<div align="left"><span class="label label-default">LinkedIn</span></div>
<%= f.text_field :linkedin, class: "form-control", placeholder: "LinkedIn profile URL" %>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#accordion" href="#collapseFour">
Password
</a>
</h4>
</div>
<div id="collapseFour" class="panel-collapse collapse">
<div class="panel-body">
<%= f.password_field :password, class: "form-control", placeholder: "Password" %>
<%= f.password_field :password_confirmation, class: "form-control", placeholder: "Confirm password" %>
</div>
</div>
</div>
<br>
<div align="center">
<%= link_to "Cancel", @user, style: "margin-right: 50px;" %>
<%= f.submit "Update", class: "btn btn-large btn-primary" %>
</div>
<% end %>
</div>
</div>
</div>
</div>
</row>
</div>
我有点坚持这个，要么找不到明确的答案，要么不确定该做什么（例如使用Self）。我试图解决这个问题已经有一段时间了，觉得我错过了一些明显但却无法弄清楚它是什么的东西。任何帮助都会非常感激，我对Ruby和RoR来说还是一个新手。
编辑：Rails服务器：
Started PATCH "/users/1-test" for 209.240.97.186 at 2013-12-24 14:43:38 +0000
Processing by UsersController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"YemNvIfdYxnChL5tsQxVXNxHLUHIOPeDJ45tHTiyN5s=", "user"=>{"name"=>"Test Addington", "location"=
>"California", "twitter_id"=>"", "facebook"=>"", "linkedin"=>"", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Up
date", "id"=>"1-test"}
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'b6b3e86b6a7d3b77641f32d72d7f68b035944cac' LIMIT 1
User Load (0.1ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1 [["id", "1-test"]]
(0.1ms) begin transaction
User Exists (0.2ms) SELECT 1 AS one FROM "users" WHERE (LOWER("users"."email") = LOWER('email@test.com') AND "users"."id" != 1) LIMIT 1
SQL (0.4ms) UPDATE "users" SET "name" = ?, "updated_at" = ? WHERE "users"."id" = 1 [["name", "Test Addington"], ["updated_at", Tue, 24 Dec 2
013 14:43:38 UTC +00:00]]
(50.8ms) commit transaction
Redirected to http://kingswood-rails-1-64062.euw1.actionbox.io:3000/users/1-test-addington
Completed 302 Found in 58ms (ActiveRecord: 52.0ms)
Started GET "/users/1-test-addington" for 209.240.97.186 at 2013-12-24 14:43:38 +0000
Processing by UsersController#show as HTML
Parameters: {"id"=>"1-test-addington"}
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'b6b3e86b6a7d3b77641f32d72d7f68b035944cac' LIMIT 1
User Load (0.1ms) SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT 1 [["id", "1-test-addington"]]
Rendered users/show.html.erb within layouts/application (0.9ms)
Rendered layouts/_shim.html.erb (0.1ms)
Rendered layouts/_sidemenu.html.erb (0.7ms)
Rendered layouts/_flash_messages.html.erb (0.1ms)
Rendered layouts/_footer.html.erb (0.3ms)
Completed 200 OK in 25ms (Views: 22.9ms | ActiveRecord: 0.5ms)
答案 0 :(得分：1)
你的参数变得空白，这就是为什么价值没有得到保存
Parameters: {"utf8"=>"✓", "authenticity_token"=>"YemNvIfdYxnChL5tsQxVXNxHLUHIOPeDJ45tHTiyN5s=", "user"=>{"name"=>"Test Addington", "location"=
>"California", "twitter_id"=>"", "facebook"=>"", "linkedin"=>"", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Up
date", "id"=>"1-test"}
答案 1 :(得分：0)
好的，根据您所做的评论，这可能是您的问题......
在您的update方法中，您没有使用为此目的而创建的user_params方法，并且您使用的参数似乎有点奇怪对我而言，即使它们似乎没有产生任何错误。
所以，我的建议是在update方法中使用以下内容：
if @user.update_attributes(user_params)
flash[:success] = "Profile updated"
redirect_to @user
else
render 'edit'
end