mirror of
https://github.com/jbranchaud/til
synced 2026-01-02 22:58:01 +00:00
28 lines
660 B
Markdown
28 lines
660 B
Markdown
# Creating Records of Has_One Associations
|
|
|
|
When working with a model, say a User, that has a `has_many` association
|
|
with another model, say a Post, you can create a new post for a user like
|
|
so:
|
|
|
|
```ruby
|
|
u1 = User.first
|
|
=> #<User:0x...>
|
|
u1.posts.create(title: "Some Title", content: "...")
|
|
=> #<Post:0x...>
|
|
```
|
|
|
|
What about with a `has_one` association? Consider a Customer that has a
|
|
`has_one` association with an Account. Rails provides this method for you:
|
|
|
|
```ruby
|
|
c1.create_account(account_number: 123, ...)
|
|
=> #<Account:0x...>
|
|
```
|
|
|
|
Rails also gives you a similar `build` method:
|
|
|
|
```ruby
|
|
c1.build_account(account_number: 123, ...)
|
|
=> #<Account:0x...>
|
|
```
|