Class: GroupCategoryNotificationDefault

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/group_category_notification_default.rb

Class Method Summary collapse

Class Method Details

.batch_set(group, level, category_ids) ⇒ Object 



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# File 'app/models/group_category_notification_default.rb', line 15

def self.batch_set(group, level, category_ids)
  level_num = notification_levels[level]
  category_ids = Category.where(id: category_ids).pluck(:id)

  changed = false

  # Update pre-existing
  if category_ids.present? &&
       GroupCategoryNotificationDefault
         .where(group_id: group.id, category_id: category_ids)
         .where.not(notification_level: level_num)
         .update_all(notification_level: level_num) > 0
    changed = true
  end

  # Remove extraneous category users
  if GroupCategoryNotificationDefault
       .where(group_id: group.id, notification_level: level_num)
       .where.not(category_id: category_ids)
       .delete_all > 0
    changed = true
  end

  if category_ids.present?
    params = { group_id: group.id, level_num: level_num }

    sql = <<~SQL
      INSERT INTO group_category_notification_defaults (group_id, category_id, notification_level)
      SELECT :group_id, :category_id, :level_num
      ON CONFLICT DO NOTHING
    SQL

    # we could use VALUES here but it would introduce a string
    # into the query, plus it is a bit of a micro optimisation
    category_ids.each do |category_id|
      params[:category_id] = category_id
      changed = true if DB.exec(sql, params) > 0
    end
  end

  changed
end

.lookup(group, level) ⇒ Object 



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# File 'app/models/group_category_notification_default.rb', line 11

def self.lookup(group, level)
  self.where(group: group, notification_level: notification_levels[level])
end

.notification_levels ⇒ Object 



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# File 'app/models/group_category_notification_default.rb', line 7

def self.notification_levels
  NotificationLevels.all
end