我为梦幻足球项目创造了一个球员选择器。现在，当我试图保存团队时，它只是回滚提交。
团队的HTML代码是：
<%= form_for(@team) do |f| %>
<center><h3>Choose your squad</h3></center>
<div class="col l5 offset-l1">
<div class="row">
<div class="input-field">
<%= f.label :name %>
<%= f.text_field :name, required: true, :class => "validate", :placeholder => "Enter a name for your Team", :style => "width: 86%;" %>
</div>
</div>
<div class="row">
<div id="playerCounter">
<div class="col l6">
<span id="playersAdded" >0</span>/<span id="totalPlayers" ></span>
</div>
</div>
<div class="hidden">
<%= f.text_field :gk1_id, :id=>'contestEntry_goalkeeper1', :class=>"form-control" %>
<%= f.text_field :gk2_id, :id=>"contestEntry_goalkeeper2", :class=>"form-control" %>
<%= f.text_field :def1_id, :id=>"contestEntry_defender1", :class=>"form-control" %>
<%= f.text_field :def2_id, :id=>"contestEntry_defender2" , :class=>"form-control" %>
<%= f.text_field :def3_id, :id=>"contestEntry_defender3", :class=>"form-control" %>
<%= f.text_field :def4_id, :id=>"contestEntry_defender4", :class=>"form-control" %>
<%= f.text_field :def5_id, :id=>"contestEntry_defender5", :class=>"form-control" %>
<%= f.text_field :mid1_id, :id=>"contestEntry_midfielder1", :class=>"form-control" %>
<%= f.text_field :mid2_id, :id=>"contestEntry_midfielder2", :class=>"form-control" %>
<%= f.text_field :mid3_id, :id=>"contestEntry_midfielder3", :class=>"form-control" %>
<%= f.text_field :mid4_id, :id=>"contestEntry_midfielder4", :class=>"form-control" %>
<%= f.text_field :mid5_id, :id=>"contestEntry_midfielder5", :class=>"form-control" %>
<%= f.text_field :fwd1_id, :id=>"contestEntry_forward1", :class=>"form-control" %>
<%= f.text_field :fwd2_id, :id=>"contestEntry_forward2", :class=>"form-control" %>
<%= f.text_field :fwd3_id, :id=>"contestEntry_forward3", :class=>"form-control" %>
</div>
<div id="save-btn">
<div class="col l6">
<%= f.submit 'Save', :class =>"waves-effect waves-light btn orange accent-4" %>
</div>
</div>
<div class="col l3">
<span>Remaining Salary</span>
</div>
<div class="col l3">
<span id="salaryLeft" >100,000</span>
</div>
</div>
</div>
<% end %>
我的控制器代码：
class TeamsController < ApplicationController
before_filter :authenticate_user!
layout 'teams'
def index
@players = Player.all
end
def create
@players = Player.all
@team = Team.new(team_params)
if @team.save
redirect_to :index
flash[:notice] = "Team created successfully."
else
puts "error"
render :new
end
end
def new
@players = Player.all
@team = Team.new
end
def edit
@team = Team.find(params[:id])
end
def update
@team = Team.find(params[:id])
if @team.update_attibutes(team_params)
redirect_to :index
flash[:notice] = "Team updated successfully."
else
render :new
end
end
def show
@team = Team.find(params[:id])
end
private
def team_params
params.require(:team).permit(:name, :gk1_id, :gk2_id, :def1_id, :def2_id, :def3_id, :def4_id, :def5_id, :mid1_id, :mid2_id, :mid3_id, :mid4_id, :mid5_id, :fwd1_id, :fwd2_id, :fwd3_id, :user_id)
end
end
控制台也没有显示任何错误。我的控制台日志：
Started POST "/teams" for ::1 at 2016-08-17 04:51:59 +0530
Processing by TeamsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"UU/L+RJgtQQQFy8o/bl8xucbPKGD6qTVfHPBCvsZIXx/VtRzm5zyPr24T0kdIcAXobO/gBpWNmY9G+pmKd3G8g==", "team"=>{"name"=>"Test Team", "gk1_id"=>"1", "gk2_id"=>"2", "def1_id"=>"5", "def2_id"=>"6", "def3_id"=>"7", "def4_id"=>"8", "def5_id"=>"9", "mid1_id"=>"26", "mid2_id"=>"20", "mid3_id"=>"19", "mid4_id"=>"18", "mid5_id"=>"17", "fwd1_id"=>"25", "fwd2_id"=>"24", "fwd3_id"=>"23"}, "commit"=>"Save"}
User Load (0.4ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 ORDER BY `users`.`id` ASC LIMIT 1
(0.2ms) BEGIN
Player Load (0.4ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 1 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 2 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 5 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 6 LIMIT 1
Player Load (0.5ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 7 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 8 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 9 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 26 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 20 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 19 LIMIT 1
Player Load (0.4ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 18 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 17 LIMIT 1
Player Load (0.4ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 25 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 24 LIMIT 1
Player Load (0.3ms) SELECT `players`.* FROM `players` WHERE `players`.`id` = 23 LIMIT 1
(0.2ms) ROLLBACK
error
Rendering teams/new.html.erb within layouts/teams
Rendered devise/sessions/_new.html.erb (4.0ms)
Rendered devise/registrations/_new.html.erb (2.1ms)
Rendered shared/_navbar.html.erb (9.6ms)
Player Load (0.6ms) SELECT `players`.* FROM `players`
Rendered teams/new.html.erb within layouts/teams (26.7ms)
Completed 200 OK in 87ms (Views: 38.8ms | ActiveRecord: 6.4ms)
我只是无法理解这个问题。一切似乎都在工作，它正在采取正确的值，数据库连接尝试保存，但只是没有保存。
任何建议将不胜感激。先感谢您。此外，我对ROR很新，所以在改进代码方面的任何帮助也将不胜感激。
编辑后
好的，我现在将@ team.save更改为@ team.save！。它显示错误验证失败：用户必须存在。
控制台显示
Completed 422 Unprocessable Entity in 96ms (ActiveRecord: 7.2ms)
ActiveRecord::RecordInvalid (Validation failed: User must exist):
app/controllers/teams_controller.rb:16:in `create'
Rendering /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout
Rendering /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/_source.html.erb
Rendered /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/_source.html.erb (8.6ms)
Rendering /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb
Rendered /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (1.9ms)
Rendering /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb
Rendered /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (2.9ms)
Rendered /usr/local/var/rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/actionpack-5.0.0/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (117.3ms)
我的team.rb代码：
class Team < ApplicationRecord
has_many :players
belongs_to :user
belongs_to :gk1, :class_name => 'Player'
belongs_to :gk2, :class_name => 'Player'
belongs_to :def1, :class_name => 'Player'
belongs_to :def2, :class_name => 'Player'
belongs_to :def3, :class_name => 'Player'
belongs_to :def4, :class_name => 'Player'
belongs_to :def5, :class_name => 'Player'
belongs_to :mid1, :class_name => 'Player'
belongs_to :mid2, :class_name => 'Player'
belongs_to :mid3, :class_name => 'Player'
belongs_to :mid4, :class_name => 'Player'
belongs_to :mid5, :class_name => 'Player'
belongs_to :fwd1, :class_name => 'Player'
belongs_to :fwd2, :class_name => 'Player'
belongs_to :fwd3, :class_name => 'Player'
end
答案 0 :(得分：0)
我发现您拥有team属于user的关联，因此您的team对象应具有user_id属性。但是，当您尝试在团队控制器中的创建操作中保存team对象时，尚未有与该团队关联的用户
尝试在团队控制器中执行以下操作：
def create
@players = Player.all
@team = Team.new(team_params)
@team.user_id = current_user.id
if @team.save
redirect_to :index
flash[:notice] = "Team created successfully."
else
puts "error"
render :new
end
end
答案 1 :(得分：0)
您与user和teams之间存在关联，但您创建了team条记录而未将其与user相关联。修改您的create操作，以创建与user记录相关联的小组。
def create
@players = Player.all
@team = current_user.teams.new(team_params)
if @team.save
redirect_to :index
flash[:notice] = "Team created successfully."
else
puts "error"
render :new
end
end
这样，当保存team时，user_id字段会自动填充current_user的ID。