foodsoft/lib/foodsoft/expansion_variables.rb
2015-03-20 16:32:58 +01:00

87 lines
3.4 KiB
Ruby

module Foodsoft
# Variable expansions for user-specified texts.
#
# This is used in wiki-pages and the footer, for example, to allow foodcoops
# to show dynamic information in the text.
#
# Plugins can modify the variables by means of the `#variables` accessor.
# Please be thoughful when choosing names as to avoid collisions.
# Do not put non-public info in variables.
module ExpansionVariables
ACTIVE_MONTHS = 3
# @return [Hash] Variables and their values
cattr_accessor :variables
# Hash of variables. Note that keys are Strings.
@@variables = {
'scope' => ->{ FoodsoftConfig.scope },
'name' => ->{ FoodsoftConfig[:name] },
'contact.street' => ->{ FoodsoftConfig[:contact][:street] },
'contact.zip_code' => ->{ FoodsoftConfig[:contact][:zip_code] },
'contact.city' => ->{ FoodsoftConfig[:contact][:city] },
'contact.country' => ->{ FoodsoftConfig[:contact][:country] },
'contact.email' => ->{ FoodsoftConfig[:contact][:email] },
'contact.phone' => ->{ FoodsoftConfig[:contact][:phone] },
'price_markup' => ->{ FoodsoftConfig[:price_markup] },
'homepage' => ->{ FoodsoftConfig[:homepage] },
'help_url' => ->{ FoodsoftConfig[:help_url] },
'applepear_url' => ->{ FoodsoftConfig[:applepear_url] },
'foodsoft.url' => ->{ FoodsoftConfig[:foodsoft_url] },
'foodsoft.version' => Foodsoft::VERSION,
'foodsoft.revision' => Foodsoft::REVISION,
'user_count' => ->{ User.count },
'ordergroup_count' => ->{ Ordergroup.undeleted.count },
'active_ordergroup_count' => ->{ active_ordergroup_count },
'supplier_count' => ->{ Supplier.undeleted.count },
'active_supplier_count' => ->{ active_supplier_count },
'active_suppliers' => ->{ active_suppliers },
'first_order_date' => ->{ I18n.l Order.first.try{|o| o.starts.to_date} }
}
# Return expanded variable
# @return [String] Expanded variable
def self.get(var)
s = @@variables[var.to_s]
s.respond_to?(:call) ? s.call : s.to_s
end
# Expand variables in a string
# @param str [String] String to expand variables in
# @param options [Hash<String, String>] Extra variables to expand
# @return [String] Expanded string
def self.expand(str, options = {})
str.gsub /{{([._a-zA-Z0-9]+)}}/ do
options[$1] || self.get($1)
end
end
# @return [Number] Number of ordergroups that have been active in the past 3 months
def self.active_ordergroup_count
GroupOrder
.where('updated_on > ?', ACTIVE_MONTHS.months.ago)
.select(:ordergroup_id).distinct.count
end
# @return [Number] Number of suppliers that has been ordered from in the past 3 months
def self.active_supplier_count
Order
.where('starts > ?', ACTIVE_MONTHS.months.ago)
.select(:supplier_id).distinct.count
end
# @return [String] Comma-separated list of suppliers that has been ordered from in the past 3 months
def self.active_suppliers
Supplier.joins(:orders)
.where('orders.starts > ?', ACTIVE_MONTHS.months.ago)
.order(:name).select(:name).distinct
.map(&:name).join(', ')
end
end
end