Question

尝试访问index＃bills页面时出现此错误：

ActiveRecord::StatementInvalid in BillsController#index
PG::UndefinedTable: ERROR: relation "bills" does not exist LINE 5: 
WHERE a.attrelid = '"bills"'::regclass ^ : SELECT a.attname, format_type(a.atttypid, a.atttypmod), pg_get_expr(d.adbin, d.adrelid), 
a.attnotnull, a.atttypid, a.atttypmod FROM pg_attribute a LEFT JOIN 
pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum WHERE 
a.attrelid = '"bills"'::regclass AND a.attnum > 0 AND NOT a.attisdropped 
ORDER BY a.attnum

我按照本指南介绍了如何从Sqlite3切换到Postgres： http://www.daveferrara1.com/ruby-in-rails-switch-from-sqlite3-to-postgres/

以下是有关我的应用的一些信息：

我有三种型号，物业，账单和居民。我可以访问常驻和属性的索引页面，我可以创建新属性并编辑它，但不能使用账单。
切换后出现此问题。在切换到Postgres之前它工作正常。

这就是我的database.yml的样子：

development:
  adapter: postgresql
  encoding: unicode
  database: demo_test_development
  pool: 5
  username: 
  password:
  timeout: 5000

test:
  adapter: postgresql
  encoding: unicode
  database: demo_test_test
  pool: 5
  username: 
  password:
  timeout: 5000

production:
  adapter: postgresql
  encoding: utf8
  database: demo_test_production
  pool: 5
  username: 
  password:

我的模特：

class Bill < ActiveRecord::Base
  belongs_to :property
  belongs_to :user
  belongs_to :resident
  has_many :photos
end

class Property < ActiveRecord::Base
  belongs_to :user
  has_many :photos
  has_one :resident
  has_many :bills    
  validate :address , :city , :country
end

class Resident < ActiveRecord::Base
    belongs_to :user
    has_many :photos
    has_one :property
    has_many :bills  
    validates_presence_of :name
end

这是我的BillsController，显示错误：

class BillsController < ApplicationController
  before_action :set_bill, only: [:show, :edit, :update]
  before_action :authenticate_user!

  def index
    @bills = current_user.bills
  end

  def show
    @bill = Bill.find(params[:id])
    @photos = @bill.photos

  end

  def new
    @bill = current_user.bills.build
  end

  def create
    @bill = current_user.bills.build(bill_params)
    if @bill.save
      if params[:images]
        params[:images].each do |image|
          @bill.photos.create(image: image)
        end
      end

      @photos = @bill.photos
      redirect_to edit_bill_path(@bill), notice: "Saved"
    else
      render :new
    end
  end

  def edit
    if current_user.id == @bill.user.id
      @photos = @bill.photos
    else
      redirect_to root_path, notice: "You don't have access to this page"
    end
  end

  def update
    if @bill.update(bill_params)
      if params[:images]
        params[:images].each do |image|
          @bill.photos.create(image: image)
        end
      end

      redirect_to edit_bill_path(@bill), notice: "Updated"
    else
      render :edit
    end
  end

  private

  def set_bill
    @bill = Bill.find(params[:id])
  end

  def bill_params
    params.require(:bill).permit(:due_date, :amount, :bill_type, :bill_status, :description, :property_id, :resident_id)
  end
end

Answer 1

表名是“Bills”，但您的查询正在寻找“账单”。这是不同的名字！

从sqlite3切换到Postgres之后的关系问题

1 个答案: