rails create has_many
belongs_to 關聯; has_one 關聯; has_many 關聯; has_many :through 關聯 ... @order = Order.create(order_date: Time .now, customer_id: @customer .id) ... ,Best way to create a belongs_to object from a has_many .... If you're using Rails 5 - you'll have to use optional: true on the AssociationGroup ...
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 rails create has_many 相關參考資料
Active Record Associations — Ruby on Rails Guides
跳到 has_many Association Reference - The has_many association creates a one-to-many relationship with another model. In database terms, this ... https://guides.rubyonrails.org Active Record 關聯— Ruby on Rails 指南
belongs_to 關聯; has_one 關聯; has_many 關聯; has_many :through 關聯 ... @order = Order.create(order_date: Time .now, customer_id: @customer .id) ... https://rails.ruby.tw Best way to create a belongs_to object from a has_many | GoRails
Best way to create a belongs_to object from a has_many .... If you're using Rails 5 - you'll have to use optional: true on the AssociationGroup ... https://gorails.com Create a has_many through record - Stack Overflow
If you are using Devise have current_user , just do @movie = current_user.movies.create!(movie_params). instead of @movie ... https://stackoverflow.com Create a many-to-many ActiveRecord association in Ruby on Rails ...
To use this database you'll have to contend with having to create a ... a has_many :through association is to run the rails generator to create the ... http://joshfrankel.me has_many, belongs_to relation in active record migration rails 4 ...
If you already have the model generated, you could create a migration with the following: rails g migration AddUserToTask user:belongs_to. https://stackoverflow.com how to add records to has_many :through association in rails ...
Note that @cust.houses.new and House.new are effectively the same because you need to create the Agent record in both cases. https://stackoverflow.com Model 關連性為你自己學Ruby on Rails | 高見龍 - railsbook.tw
bin/rails g model User name email tel invoke active_record create ..... 跟一對一的 has_one 一樣，設定 has_many :products 後會多了以下幾個方法：. products ... https://railsbook.tw Rails 4: Create new records through has_many association - Stack ...
If this form performs adding only one campaign i guess you should handly add this exect campaign to customer. If you update all campaign ... https://stackoverflow.com Rails has_many through creating record with relationship - Stack ...
So we need to change your create method a tiny little bit: def create @post = Post.new(post_params.except(:teams)) # ... everything else looks like it should be ... https://stackoverflow.com |