CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3mongodbmongoid
Christian Fazzini
Christian Fazzini

Reputation: 19723

embeds_many with condition?

How can I do an embeds_many if a field is of a specific value? For example. Lets assume a member of the family can have one or many cars if they are older than or equal to 18 years of age.

class FamilyMember
  include Mongoid::Document

  # Psuedo code
  embeds_many :cars, :if :age >= 18

  field :member_type, :type => String # can be dad, mom, son, daughter
  field :age, :type => Integer
end

Is such a thing possible or would I have to go through some other means. i.e. validation?

Upvotes: 0

Views: 218

Answers (3)

Raghvendra Parashar
Raghvendra Parashar

Reputation: 4053

try this and take a look here for more information

embeds_many :cars do
    def with_age(age=18)
      where(age: age)
    end
end

then you have to use, something like this family_member.cars.with_age(18) or family_member.cars.with_age, and then you can modify condition as per your need.

Upvotes: 2

Ganesh Kunwar
Ganesh Kunwar

Reputation: 2653

embeds_many :cars, :if => :check_age

def check_age
  return true if self.age >= 18
end

Upvotes: 0

user946611
user946611

Reputation:

In active record you could do

has_many :cars, :conditions => ['age >= ?', 18]

I have not tried it in mongoid though.

Upvotes: 0

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