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# File 'app/models/educode_sales/money_plan.rb', line 17
def return_period
if self.date_at && self.business&.last_follow_up&.signed_date
signed_date = self.business&.last_follow_up&.signed_date
month = (self.date_at.year - signed_date.year) * 12 + self.date_at.month - signed_date.month - (self.date_at.day >= signed_date.day ? 0 : 1)
if month <= 3
'3个月内'
elsif month <= 6
'4-6个月内'
elsif month <= 9
'7-9个月'
elsif month <= 12
'10-12个月'
elsif month <= 24
'1-2年'
elsif month <= 36
'2-3年'
else
'3年以上'
end
else
''
end
end
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