我正在学习哈特尔的教程第12章。当我运行
最后,
这是我的seeds.rb文件:
我猜问题可能出在这一行代码上:
bundle exec rake db:seed
时,出现了以下错误:ActiveRecord::RecordInvalid: Validation failed: Email has already been taken
我尝试运行
rake db:reset
rake db:migrate
rake db:test:prepare
最后,
rake db:populate
但是他们没有解决问题。当我运行rake db:populate
时,会出现以下错误:
Don't know how to build task 'db:populate'
这是我的seeds.rb文件:
# Users
User.create!(name: "Example User",
email: "example@railstutorial.org",
password: "foobar",
password_confirmation: "foobar",
admin: true,
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
# Microposts
users = User.order(:created_at).take(6)
50.times do
content = Faker::Lorem.sentence(5)
users.each { |user| user.microposts.create!(content: content) }
end
# Following relationships
users = User.all
user = users.first
following = users[2..50]
followers = users[3..40]
following.each { |followed| user.follow(followed) }
followers.each { |follower| follower.follow(user) }
我猜问题可能出在这一行代码上:
email = "example-#{n+1}@railstutorial.org"
。