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如何引用seeds.rb中的图像

ruby-on-rails

Asarluhi · 技术社区 · 6 年前

我使用CarrierWave上传与我的用户模型相关联的图像,它有一个对应的 picture 在字符串字段中包含图像文件名的属性。通常上传图片的名称存储在 public/uploads .
现在,我想为我的开发数据库植入示例用户,包括配置文件图片的关联路径。我试着储存我的 pic1.jpg , pic2.jpg , pic3.jpg 中的图片 public/images 参考这些图片 db/seeds.rb 作为 picture: '/images/pic1.jpg' 等等,就像格兰特·纽菲尔德在 old stackoverflow question . 在视图中,使用以下代码包含图片:

<%= image_tag @user.picture.url if @user.picture? %>

但是这不起作用,因为picture属性为nil,所以图像不会加载到视图中。我也试着把我的照片储存在 app/assets/images 并将其引用为 picture: 'pic1.jpg' , picture: 'pic2.jpg' , picture: 'pic3.jpg' 在里面 db/种子.rb 没有结果。

下面是我的 db/种子.rb 文件:

User.create!(name:  "Example User",
         email: "example@railstutorial.org",
         password:              "foobar",
         password_confirmation: "foobar",
         admin: true,
         politics: 'left',
         car: true,
         pets: 'I like horses and bears',
         music: 'American country and folk',
         picture: 'pic1.jpg',
         profile: 'I like music and the Ruby and Python programming languages',
         activated: true,
         activated_at: Time.zone.now)

User.create!(name:  "Super-friendly User",
        email: "example-101@railstutorial.org",
        password:              "PassWord-0",
        password_confirmation: "PassWord-0",
        admin: true,
        smoker: true,
        politics: 'left',
        car: true,
        pets: 'I like turtles and whales',
        car_pets: true,
        music: 'Jazz and blues',
        picture: 'pic2.jpg',
        profile: 'I like music and drinking',
        activated: true,
        activated_at: Time.zone.now)

User.create!(name:  "Friendly User",
        email: "example-102@railstutorial.org",
        password:              "PassWord-0",
        password_confirmation: "PassWord-0",
        politics: 'right',
        car: true,
        pets: 'I like snakes and gorillas',
        music: 'pop and classics',
        picture: 'pic3.jpg',
        profile: 'I like music and hiking',
        activated: true,
        activated_at: Time.zone.now)

99.times do |n|
  name  = Faker::Name.name
  email = "example-#{n+1}@railstutorial.org"
  password = "password"
  User.create!(name:  name,
           email: email,
           password:              password,
           password_confirmation: password,
           activated: true,
           activated_at: Time.zone.now)
end

0 回复 | 直到 6 年前

gmaliar 6 年前

假设您将图像保存在 public/images ,carrierWave要求将IO对象传递给rails模型,以便在 seeds.rb 您需要执行的文件:

User.create!(
  name:  "Example User",
  email: "example@railstutorial.org",
  password:              "foobar",
  password_confirmation: "foobar",
  admin: true,
  politics: 'left',
  car: true,
  pets: 'I like horses and bears',
  music: 'American country and folk',
  picture: File.open(Rails.root.join('public', 'images', 'pic1.jpg')),
  profile: 'I like music and the Ruby and Python programming languages',
  activated: true,
  activated_at: Time.zone.now
)

看我变了 picture 到 File.open(Rails.root.join('public', 'images', 'pic1.jpg'))