IB
Size: a a a
IB
C
establish_connection :development_sec
АЛ
АЛ
OB
IS
<% @payments.group_by(&:pay_date).each do |day, payments_by_day|%>
<%= day %>
<%= payments_by_day.sum(:amount) %>
<% end %>
АД
<% @payments.group_by(&:pay_date).each do |day, payments_by_day|%>
<%= day %>
<%= payments_by_day.sum(:amount) %>
<% end %>
IS
АД
IS
АД
IS
<% @payments.group_by(&:pay_date).each do |day, payments_by_day|%>
<%= day %>
<%= payments_by_day.sum(:amount) %>
<% end %>
АД
АД
IS
IS
АД
SP
payments.sum(&:amount)
если уж массив?АД
payments.sum(&:amount)
если уж массив?АД