레일 모델은 저장에 실패하지만 오류 메시지가 표시됩니다

Question

I 대다 관계를 통해 통신 다음 레일 모델이 있습니다

class Task < ApplicationRecord 
    belongs_to :case 
    has_many :task_actor_roles 
    has_many :task_artifacts 

    has_many :task_activities 
    has_many :activities, through: :task_activities 

    accepts_nested_attributes_for :task_activities 

    attr_accessor :tasks_attributes 
end 

...

class TaskActivity < ApplicationRecord 
    belongs_to :task 
    belongs_to :activity 
    belongs_to :instantiation_operator 
end 

... 나는 새 작업의 형태로 여러 선택 필드를 추가 할 중첩 된 형태의 보석을 사용하고

class Activity < ApplicationRecord 
    belongs_to :software_process 
    has_many :artifacts, :dependent => :destroy 
    belongs_to :activity_role 
    has_many :task_activities 
    has_many :tasks, through: :task_activities 
end 

. 그것은 그러나 그것은 아무것도 표시되지 않습니다 유효성 검사 오류를 표시 할 것 같은 데이터를 페이지를 다시로드를 보낼 때

<%= nested_form_for(task, url: {action: action}) do |f| %> 
    <%= f.label :activities %> 
    <%= f.fields_for :task_activities do |task_activity| %> 
    <%= task_activity.select(:activity_id,@activities.collect { |p| [p.name, p.id] }) %> 
    <%= task_activity.hidden_field :instantiation_operator_id, :value => @operator.id %> 
    <%= task_activity.link_to_remove "Remove this activity" %> 
    <% end %> 
    <p><%= f.link_to_add "Add an activity", :task_activities %></p> 
    <div class="field"> 
    <%= f.label :name %> 
    <%= f.text_field :name %> 
    </div> 
    <%= f.submit %> 
<%= end %> 

: 다음은 양식을 생성하는 코드의 조각입니다.

이 터미널 로그 모습입니다 같은 :

Started POST "/tasks/create_group" for 127.0.0.1 at 2016-11-24 21:51:40 -0200 
Processing by TasksController#create_group as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "task"=>{"case_id"=>"1", "task_activities_attributes"=>{"1480031490821"=>{"activity_id"=>"11", "instantiation_operator_id"=>"6", "_destroy"=>"false"}, "1480031492604"=>{"activity_id"=>"14", "instantiation_operator_id"=>"6", "_destroy"=>"false"}}, "name"=>"Doris Woodard", "description"=>"Aperiam impedit aut fugit amet anim perspiciatis mollit", "priority"=>"Dolores explicabo Ipsum dolorem sit in cum iste enim nisi sint sed ratione odio", "category"=>"Eos cumque consequuntur iste est enim minim beatae et dolores mollit id quis ut occaecat laboriosam molestiae aut ipsa nulla", "status"=>"Veritatis qui id quaerat distinctio Blanditiis odio sit quisquam vel provident optio consectetur", "startDate"=>"25-Feb-2001", "comments"=>"Voluptatem eiusmod amet in ut", "TTC"=>"43"}, "task_activity"=>{"instantiation_operator_id"=>"6"}, "task_actor_role"=>{"task_role_id"=>"2", "task_actor_id"=>"3"}, "commit"=>"Create Task"} 
    (0.1ms) BEGIN 
    Case Load (0.3ms) SELECT "cases".* FROM "cases" WHERE "cases"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]] 
    TaskActor Load (0.4ms) SELECT "task_actors".* FROM "task_actors" WHERE "task_actors"."id" = $1 LIMIT $2 [["id", 3], ["LIMIT", 1]] 
    TaskRole Load (0.3ms) SELECT "task_roles".* FROM "task_roles" WHERE "task_roles"."id" = $1 LIMIT $2 [["id", 2], ["LIMIT", 1]] 
    Activity Load (0.2ms) SELECT "activities".* FROM "activities" WHERE "activities"."id" = $1 LIMIT $2 [["id", 11], ["LIMIT", 1]] 
    InstantiationOperator Load (0.4ms) SELECT "instantiation_operators".* FROM "instantiation_operators" WHERE "instantiation_operators"."id" = $1 LIMIT $2 [["id", 6], ["LIMIT", 1]] 
    Activity Load (0.4ms) SELECT "activities".* FROM "activities" WHERE "activities"."id" = $1 LIMIT $2 [["id", 14], ["LIMIT", 1]] 
    CACHE (0.0ms) SELECT "instantiation_operators".* FROM "instantiation_operators" WHERE "instantiation_operators"."id" = $1 LIMIT $2 [["id", 6], ["LIMIT", 1]] 
    (0.2ms) ROLLBACK 
    InstantiationOperator Load (0.2ms) SELECT "instantiation_operators".* FROM "instantiation_operators" WHERE "instantiation_operators"."name" = $1 LIMIT $2 [["name", "group"], ["LIMIT", 1]] 
    Case Load (0.3ms) SELECT "cases".* FROM "cases" WHERE "cases"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]] 
    Rendering tasks/group.html.erb within layouts/application 
    Project Load (0.2ms) SELECT "projects".* FROM "projects" WHERE "projects"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]] 
    SoftwareProcess Load (0.2ms) SELECT "software_processes".* FROM "software_processes" WHERE "software_processes"."id" = $1 LIMIT $2 [["id", 2], ["LIMIT", 1]] 
    TaskRole Load (0.3ms) SELECT "task_roles".* FROM "task_roles" 
    TaskActor Load (0.2ms) SELECT "task_actors".* FROM "task_actors" 
    Activity Load (0.2ms) SELECT "activities".* FROM "activities" 
    Rendered tasks/_form.html.erb (10.8ms) 
    Rendered tasks/group.html.erb within layouts/application (14.1ms) 
    User Load (0.7ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["remember_token", "e97f4b0c90c219f7223b805989eb25dbc6e2cae2"], ["LIMIT", 1]] 
Completed 200 OK in 220ms (Views: 150.4ms | ActiveRecord: 7.7ms) 

내가 아무 문제없이 저장 형태로 중첩 된 속성을 가진 라인을 주석 처리합니다. 그래서 문제는 확실히 그것에 있습니다. 당신은 모델 오류를 기록 할

@task.valid? 
    Case Load (0.4ms) SELECT "cases".* FROM "cases" WHERE "cases"."id" = $1 LIMIT $2 [["id", 1], ["LIMIT", 1]] 
    TaskActor Load (0.2ms) SELECT "task_actors".* FROM "task_actors" WHERE "task_actors"."id" = $1 LIMIT $2 [["id", 3], ["LIMIT", 1]] 
    TaskRole Load (0.2ms) SELECT "task_roles".* FROM "task_roles" WHERE "task_roles"."id" = $1 LIMIT $2 [["id", 2], ["LIMIT", 1]] 
    Activity Load (0.3ms) SELECT "activities".* FROM "activities" WHERE "activities"."id" = $1 LIMIT $2 [["id", 2], ["LIMIT", 1]] 
    InstantiationOperator Load (0.2ms) SELECT "instantiation_operators".* FROM "instantiation_operators" WHERE "instantiation_operators"."id" = $1 LIMIT $2 [["id", 3], ["LIMIT", 1]] 
    Activity Load (0.2ms) SELECT "activities".* FROM "activities" WHERE "activities"."id" = $1 LIMIT $2 [["id", 7], ["LIMIT", 1]] 
    CACHE (0.0ms) SELECT "instantiation_operators".* FROM "instantiation_operators" WHERE "instantiation_operators"."id" = $1 LIMIT $2 [["id", 3], ["LIMIT", 1]] 
false 

...

@task.errors 
#<ActiveModel::Errors:0x007fcd984174c8 @base=#<Task id: nil, name: "Forrest Wright", description: "In dolores voluptatibus maiores in fugit fuga Quis...", priority: "Voluptatem modi quod consequatur vel sed est exerc...", category: "Sequi vitae at explicabo In", status: "Omnis quo sed obcaecati voluptate corporis cumque ...", startDate: "1986-07-04", comments: "Ut fugit dicta voluptatem Ullam voluptas id et", TTC: 86, endDate: nil, created_at: nil, updated_at: nil, case_id: 1>, @messages={:"task_activities.task"=>["must exist"]}, @details={"task_activities.task"=>[{:error=>:blank}]}> 

Answer 1

가 production.log하기 :

UPDATE 그래서 나는 @task을 검사 byebug을 사용했다. 이를 달성하기위한 방법은 일을하는 것입니다 : byebug (레일 5+) 또는 디버거 (레일 4-)

def your_action 
    [...] 
    byebug 
    [...] 
end 

을 가진

def your_action 
    logger.debug @task.errors 
    [...] 
end 

또는 디버깅 그리고 레일 서버에서 당신은 변수를 @task 검사 할 수 있습니다 .

Answer 2

앞에 , inverse_of: :task을 첨가 하였다. 작업 전에 작업을 저장하려고했는데 문제가 발생했습니다. 내가 byebug (머리에 @ vl3에 감사)를 사용하고 @ save.errors를 검사했다. 나는 메시지를 발견

@messages={:"task_activities.task"=>["must exist"]}

또한 더 TASK_ID가 작업 활동에 할당되지되고 있음.

이 줄을 추가하면 단순히 작업 활동 전에 작업을 만들 수 있습니다.