Module: Milia::Base::ClassMethods

Defined in:
lib/milia/base.rb

Overview

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Instance Method Summary collapse

Instance Method Details

#acts_as_tenant ⇒ Object

acts_as_tenant – makes a tenanted model Forces all references to be limited to current_tenant rows



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# File 'lib/milia/base.rb', line 16

def acts_as_tenant()
  belongs_to :tenant
  validates_presence_of :tenant_id

  default_scope lambda { where("#{table_name}.tenant_id = ?", Thread.current[:tenant_id]) }

  # ..........................callback enforcers............................
  after_initialize do |obj|
    # Whenever we initialize a new object it needs to have the correct tenant_id of the current_user.
    # Ensures that destroy can be called on tenanted records which haven't been persisted yet.
    obj.tenant_id ||= Thread.current[:tenant_id]
  end

  # ..........................callback enforcers............................
  before_save do |obj| # force tenant_id to be correct for current_user
    # raise exception if updates attempted on wrong data
    raise ::Milia::Control::InvalidTenantAccess unless obj.tenant_id == Thread.current[:tenant_id]
  end

  # ..........................callback enforcers............................
  before_destroy do |obj| # force tenant_id to be correct for current_user
    if (obj.tenant_id != Thread.current[:tenant_id])
      raise ::Milia::Control::InvalidTenantAccess
    end
  end

end

#acts_as_universal ⇒ Object

acts_as_universal – makes a univeral (non-tenanted) model Forces all reference to the universal tenant (nil)



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# File 'lib/milia/base.rb', line 48

def acts_as_universal()
  belongs_to :tenant

  default_scope { where("#{table_name}.tenant_id IS NULL") }

  # ..........................callback enforcers............................
  before_save do |obj| # force tenant_id to be universal
    if obj.tenant_id.present?
      raise ::Milia::Control::InvalidTenantAccess
    end
  end

  # ..........................callback enforcers............................
  before_destroy do |obj| # force tenant_id to be universal
    raise ::Milia::Control::InvalidTenantAccess unless obj.tenant_id.nil?
  end

end

#acts_as_universal_and_determines_account ⇒ Object

acts_as_universal_and_determines_tenant_reference All the characteristics of acts_as_universal AND also does the magic of binding a user to a tenant



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# File 'lib/milia/base.rb', line 72

def ()
  include ::Milia::InviteMember
  has_and_belongs_to_many :tenants

  acts_as_universal()

  # validate that a tenant exists prior to a user creation
  before_create do |new_user|
    if Thread.current[:tenant_id].blank? ||
        !Thread.current[:tenant_id].kind_of?(Integer) ||
        Thread.current[:tenant_id].zero?

      raise ::Milia::Control::InvalidTenantAccess, "no existing valid current tenant"

    end
  end # before create callback do

  # before create, tie user with current tenant
  after_create do |new_user|
    tenant = Tenant.find(Thread.current[:tenant_id])
    unless tenant.users.include?(new_user)
new_user.skip_reconfirmation! # For details why this is needed see milia issue #68
      tenant.users << new_user # add user to this tenant if not already there
    end
  end # before_create do

  before_destroy do |old_user|
    old_user.tenants.clear # remove all tenants for this user
  end # before_destroy do

end

#acts_as_universal_and_determines_tenant ⇒ Object 



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# File 'lib/milia/base.rb', line 106

def acts_as_universal_and_determines_tenant()
  has_and_belongs_to_many :users

  acts_as_universal()

  before_destroy do |old_tenant|
    old_tenant.users.clear # remove all users from this tenant
    true
  end # before_destroy do
end

#current_tenant ⇒ Object

current_tenant – returns tenant obj for current tenant return nil if no current tenant defined



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# File 'lib/milia/base.rb', line 121

def current_tenant()
  begin
    tenant = (
    Thread.current[:tenant_id].blank? ?
        nil :
        Tenant.find(Thread.current[:tenant_id])
    )

    return tenant

  rescue ActiveRecord::RecordNotFound
    return nil
  end
end

#current_tenant_id ⇒ Object

current_tenant_id – returns tenant_id for current tenant



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# File 'lib/milia/base.rb', line 139

def current_tenant_id()
  return Thread.current[:tenant_id]
end

#set_current_tenant(tenant) ⇒ Object

set_current_tenant – model-level ability to set the current tenant NOTE: *USE WITH CAUTION* normally this should NEVER be done from the models … it’s only useful and safe WHEN performed at the start of a background job (DelayedJob#perform)



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# File 'lib/milia/base.rb', line 149

def set_current_tenant(tenant)
  # able to handle tenant obj or tenant_id
  case tenant
    when Tenant then
      tenant_id = tenant.id
    when Integer then
      tenant_id = tenant
    else
      raise ArgumentError, "invalid tenant object or id"
  end # case

  old_id                     = (Thread.current[:tenant_id].nil? ? '%' : Thread.current[:tenant_id])
  Thread.current[:tenant_id] = tenant_id
  logger.debug("MILIA >>>>> [Tenant#change_tenant] new: #{tenant_id}\told:#{old_id}") unless logger.nil?

end

#where_restrict_tenant(*args) ⇒ Object

where_restrict_tenant – gens tenant restrictive where clause for each klass NOTE: subordinate join tables will not get the default scope by Rails theoretically, the default scope on the master table alone should be sufficient in restricting answers to the current_tenant alone .. HOWEVER, it doesn’t feel right. adding an additional .where( where_restrict_tenants(klass1, klass2,…)) for each of the subordinate models in the join seems like a nice safety issue.



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# File 'lib/milia/base.rb', line 177

def where_restrict_tenant(*args)
  args.map { |klass| "#{klass.table_name}.tenant_id = #{Thread.current[:tenant_id]}" }.join(" AND ")
end