What are collections in Ruby on Rails?
In Ruby on Rails, collections refer to groups of objects that can be manipulated as a single entity, often using ActiveRecord.
Can you give me an example of how to use collections?
Sure! You can use methods like all
, where
, and order
to retrieve collections of records from the database.
What is the difference between has_many
and belongs_to
?
has_many
indicates a one-to-many relationship, while belongs_to
indicates a many-to-one relationship between models.
How do I iterate over a collection in Rails?
You can use the each
method to iterate over a collection. For example: @users.each do |user| ... end
.
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