表单将无法保存，并且重定向上不会显示任何验证错误。 滑轨5

Question

我的求职申请表对象拒绝插入数据库，即使参数正确并且没有错误附加到错误日志中也是如此。 我有一个用户模型，作业模型和job_application模型。 用户模型无法将job_applications保存到作业模型。 如何正确设置要插入的表格而不会失败？

控制台错误

Started POST "/job_applications" for 127.0.0.1 at 2018-02-05 16:02:44 -0500
Processing by JobApplicationsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"CEUd0b1IiA1iNUJ06BIycpiECrz2Q8W9Ol0Y/BDUC1ctWKjAn5/EoW8s157NAGiKFH+CZ4bZBzWAVRJvleyLSw==", "job_application"=>{"job_id"=>"1", "user_first_name"=>"James", "user_last_name"=>"Goober", "user_contact_time"=>"PM", "user_resume_link"=>"4"}, "commit"=>"Submit Application"}
  User Load (2.0ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 1], ["LIMIT", 1]]
   (0.0ms)  BEGIN
  Job Load (7.0ms)  SELECT  "jobs".* FROM "jobs" WHERE "jobs"."id" = $1 LIMIT $2  [["id", 1], ["LIMIT", 1]]
   (0.0ms)  ROLLBACK
  Rendering job_applications/new.html.erb within layouts/application
  Resume Load (3.0ms)  SELECT "resumes".* FROM "resumes" WHERE "resumes"."user_id" = $1 ORDER BY "resumes"."title" ASC  [["user_id", 1]]
  Rendered job_applications/_form.html.erb (792.8ms)

求职申请表

<%= simple_form_for([@job_application]) do |f| %>
    <%= f.hidden_field :job_id %>
    <%= f.error_notification %>

    <div class="form-group">
      <div class="col-4">
        <label for="user-first-name">First Name</label>
        <%= f.input :user_first_name, class: 'form-control', required: true, label: false %>
      </div>
    </div>
    <div class="form-group">
      <div class="col-4">
        <label for="user-last-name">Last Name</label>
        <%= f.input :user_last_name, class: 'form-control', required: true, label: false %>
      </div>
    </div>
    <div class="form-group">
      <div class="col-3">
        <label for="user-contact-time">Contact Time</label>
        <%= f.input :user_contact_time, collection: %w(AM PM), class: 'form-control', required: true, label: false, prompt: 'Daytime or Evening' %>
      </div>
    </div>
    <div class="form-group">
      <div class="col-4">
        <% if user_signed_in? %>
          <label for="user-resume-link"><%= fa_icon 'clone' %> Resume Repository</label>
        <%= f.input :user_resume_link, collection: current_user.resumes.order(:title), prompt: "Select your Resume", label: false %>
        <% end %>
      </div>
    </div>
    <div class="form-group">
      <div class="col-4">
        <%= f.button :submit, 'Submit Application', class: 'btn btn-blue form-control' %>
      </div>
    </div>
  <% end %>

job_application.rb

class JobApplication < ApplicationRecord
  belongs_to :employer
  belongs_to :user
  belongs_to :job
  delegate :resume, to: :user
  validates :user_first_name, presence: true, uniqueness: false, length: {maximum: 50}, format: {with: /\A[a-zA-Z]+(?: [a-zA-Z]+)?\z/}
  validates :user_last_name, presence: true, uniqueness: false, length: {maximum: 50}, format: {with: /\A[a-zA-Z]+(?: [a-zA-Z]+)?\z/}
  validates :user_resume_link, presence: true
  validates :user_contact_time, presence: true
end

job.rb

class Job < ApplicationRecord
has_many :job_applications, dependent: destory
# accepts_nested_attributes_for :job_applications, :reject_if => :all_blank, :allow_destroy => true
end

job_applications_controller

class JobApplicationsController < ApplicationController
  before_action :set_job_application, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!, only: [:create, :new, :update, :destroy, :edit]

  # GET /job_applications/1
  # GET /job_applications/1.json
  def show
  end

  # GET /job_applications/new
  def new
    @job_application = JobApplication.new
  end

  # GET /job_applications/1/edit
  def edit
  end

  # POST /job_applications
  # POST /job_applications.json
  def create
    @job_application = current_user.job_applications.build(job_application_params)

    respond_to do |format|
      if @job_application.save
        format.html { redirect_to @job_application, notice: 'Job application was successfully created.' }
        format.json { render :show, status: :created, location: @job_application }
      else
        format.html { render :new }
        format.json { render json: @job_application.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /job_applications/1
  # PATCH/PUT /job_applications/1.json
  def update
    respond_to do |format|
      if @job_application.update(job_application_params)
        format.html { redirect_to @job_application, notice: 'Job application was successfully updated.' }
        format.json { render :show, status: :ok, location: @job_application }
      else
        format.html { render :edit }
        format.json { render json: @job_application.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /job_applications/1
  # DELETE /job_applications/1.json
  def destroy
    @job_application.destroy
    respond_to do |format|
      format.html { redirect_to job_applications_url, notice: 'Job application was successfully destroyed.' }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_job_application
      @job_application = JobApplication.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def job_application_params
      params.require(:job_application).permit(:user_first_name, :user_last_name, :user_contact_time, :user_resume_link, :employer_id, :job_id, resumes_attributes: [:id, :title, :_destroy])
    end
end

user.rb

class User < ApplicationRecord
has_many :job_applications, dependent: :destroy
  has_many :jobs, :through => :job_applications
end

Answer 1

您确定表格会产生输入

<input type="text" name="job_application[user-first-name]">

而且不是那样

<input type="text" name="user-first-name">

在第二种情况下，您需要将表单参数重写为

   def job_application_params
      params.permit(:user_first_name, :user_last_name, :user_contact_time, :user_resume_link, :employer_id, :job_id, resumes_attributes: [:id, :title, :_destroy])
    end

Answer 2

用户模型，作业模型和应用程序模型之间的关系设置不正确。 job_application属于用户，但工作本身属于雇主。 job_application不属于雇主。 但是，它仍然可以通过作业本身访问它。

job_application.rb

class JobApplication < ApplicationRecord
  # belongs_to :employer removing this line, eliminated the error.
  belongs_to :user
  belongs_to :job
  delegate :resume, to: :user
  validates :user_first_name, presence: true, uniqueness: false, length: {maximum: 50}, format: {with: /\A[a-zA-Z]+(?: [a-zA-Z]+)?\z/}
  validates :user_last_name, presence: true, uniqueness: false, length: {maximum: 50}, format: {with: /\A[a-zA-Z]+(?: [a-zA-Z]+)?\z/}
  validates :user_resume_link, presence: true
  validates :user_contact_time, presence: true
end