Question

这是我第一次将CSV文件复制到我的Rails 4 Heroku应用程序按照以下步骤收到错误消息。

从命令行收到的消息：

ERROR:  invalid input syntax for integer: "Employee personnel files"
CONTEXT:  COPY articles, line 29, column id: "Employee personnel files"

使用此命令：

PGPASSWORD=PWHERE psql -h HOSTHERE -U USERHERE DBNAMEHERE -c "\copy articles FROM 'lib/articles' WITH CSV HEADER;"

以下是CSV文件的摘录：

 line 1 "Title","Body"
 line 2 "Employee personnel files","
    As an HR professional you are no stranger to paperwork. It seems that for every employment action - applying, interviewing, hiring, disciplining, on and on - there is a specific form that needs to be filled out. Making sure you complete the paperwork properly is only half the battle though. Once you finish completing a form, you are faced with a whole new issue: what to do with it.  Being the smarty that you are, you know that proper documentation is key in protecting your company in the unfortunate case of a lawsuit, but knowing what needs to be kept where and for how long and who can see it can be kind of tricky. Let's take a minute to go over the basics.

...

 line 29 Looking for more sample polices and important forms? Click here to gain access."

有关缺少什么的任何建议？

Answer 1

似乎你可能在表中定义了一个字段，postgres试图存储字符串值＆＃34;员工人事档案＆＃34;。请在表格中查看CSV中未定义的其他字段。

Header用于指定CSV具有标题行，以便在加载过程中可以忽略它，而不是指定要将数据导入的字段。

如果您正在开发rails应用程序并使用迁移，则可能会将id字段定义为整数。

Answer 2

首先，确保您正在创建您的表，这将包含此信息，但没有ID列。 ID列是由rails自动创建的，除非您计划向每行添加数字，否则将成为问题。然后，您可以在事实之后添加ID列以使其正确。

实施例。 create_table :products, id: false do |t|

这将留下ID列。然后，一旦你正确格式化了所有记录，每行有一个记录，你就可以使用/ COPY命令将它们复制到postgres中。然后，您可以在事后添加ID列。

Answer 3

我能够使用heroku run rake db:seed命令和/ lib / tasks中的import.rake文件为我的heroku数据库播种。

    require 'csv'

    namespace :import do

      desc 'An optional description for what the task does'
      task :articles => :environment do
            CSV.foreach("lib/articles.csv", headers: true, encoding: "UTF-8") do |row|
            Article.create!(
              title: row["Title"], 
              body: row["Body"], 
            )
          end
      end
    end

PostgreSQL错误：整数的输入语法无效

3 个答案: