当我尝试创建作业时，它会在views / jobs / _form.html.erb中显示错误公司必须存在，公司名称应自动填充

Question

class CreateJobs < ActiveRecord::Migration[5.1]
  def change
    create_table :jobs do |t|
      t.string :title
      t.text :description
      t.string :company
      t.integer :user_id
      t.integer :company_id
      t.timestamps
    end
  end
end

class CreateCompanies < ActiveRecord::Migration[5.1]
  def change
    create_table :companies do |t|
      t.string :c_name
      t.text :c_description
      t.integer:user_id
      t.timestamps
    end
  end
end

# Models
class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :companies
  has_many :jobs
end

class Job < ApplicationRecord
    belongs_to :user
    belongs_to :category
    belongs_to :company
end

class Company < ApplicationRecord
    belongs_to:user
    has_many:jobs

end

# Jobs controller
def show
        end

        def new

               @job = current_user.jobs.build       
        end

def create
        job_attrs = jobs_params.except(:company)
        job_attrs[:company] = Company.find_by(id: jobs_params[:company])
        @job = current_user.jobs.build(job_attrs)

      if @job.save
        flash[:success]= "success"
        redirect_to @job

        else

        flash[:error]=@job.errors.full_messages
        render "new"
        end
    end

def jobs_params
            params.require(:job).permit(:title, :description, :company, :category_id, :image,:jobclosedate,:company_id)
end

这是views / jobs / _form

<%= simple_form_for(@job,validation:true ,html: { mutlipart: true, class: 'form-horizontal'}) do |f| %>
<%= f.input :title, label: "Job Title", input_html: { class: "form-control"}%>
<%= f.input :description, label: "Job Description", input_html: { class: "form-control" }%>
<%= f.input :company, label: "Your Company", input_html: { class: "form-control" }%>
<%= f.collection_select :category_id,Category.all, :id, :name, {promt: "Choose a category" }%>

当我尝试创建作业时，它将显示在views / jobs / _form.html.erb

中

  

“公司必须存在”（job / _form不会从公司模块获取公司名称）   公司应自动填充在views / jobs / _form.html.erb中，它不会自动填充，并且公司会退出