an organization can have multiple members, , member belongs 1 organization. member can admin or not.
an admin member should able deleted if organization has 2 admin members or more. achieve through if statement.
how can ruby count number of members organization have admin characteristic? have:
<% if (member.admin && @organization.members.admin.count < 2) %> this produces error message:
undefined method 'admin' it second part after && doesn't work. if remove part produces no errors.
given @organization.members.count calculates number of members organization, thought @organization.members.admin.count might calculate number of members of organization admin=true. apparantly incorrect. how should count number of members?
just add admin scope member model:
class member < activerecord::base scope :admin, -> { where(admin: true) } end 