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Contents
module Adminpanel
module Galleryzation
extend ActiveSupport::Concern
included do
before_create :set_position
before_destroy :rearrange_positions
scope :ordered, -> do
order('position ASC')
# where(position: 1)
end
end
def move_to_better_position
if self.position > 1
conflicting_gallery = get_conflicting_gallery(position - 1)
self.update_attribute(:position, self.position - 1)
conflicting_gallery.update_attribute(
:position, conflicting_gallery.position + 1
)
true
else
false
end
end
def move_to_worst_position
records = self.class.count
if self.position < records
conflicting_gallery = get_conflicting_gallery(position + 1)
update_attribute(:position, self.position + 1)
conflicting_gallery.update_attribute(
:position, conflicting_gallery.position - 1
)
true
else
false
end
end
protected
def get_conflicting_gallery(conflicting_position)
self.class.where(
self.class.relation_field => self.send(self.class.relation_field)
).find_by_position(conflicting_position)
end
def rearrange_positions
unarranged_galleries = self.class.where(
self.class.relation_field => self.send(
self.class.relation_field
)
).where('position > ?', self.position)
unarranged_galleries.each do |gallery|
gallery.update_attribute(:position, gallery.position - 1)
end
end
def set_position
last_record = self.class.where(
self.class.relation_field => self.send(
self.class.relation_field
)
).last
if last_record.nil?
self.position = 1
else
self.position = last_record.position + 1
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems