Initial commit

app/models/carto/external_source.rb

@@ -0,0 +1,34 @@
+require 'active_record'
+
+class Carto::ExternalSource < ActiveRecord::Base
+  # Seconds
+  REFRESH_INTERVAL = 30*24*60*60
+
+  has_many :external_data_imports, class_name: Carto::ExternalDataImport, dependent: :destroy
+  belongs_to :visualization, inverse_of: :external_source
+  validates :visualization, :import_url, :rows_counted, :size, presence: true
+
+  def update_data(import_url, geometry_types, rows_counted, size, username = nil)
+    self.import_url = import_url
+    # This check avoids a "false change" if the data is actually equal (AR bug on arrays)
+    self.geometry_types = geometry_types unless equal_pg_array?(self.geometry_types, geometry_types)
+    self.rows_counted = rows_counted
+    self.size = size
+    self.username = username
+    self
+  end
+
+  def importable_by?(user)
+    user.present? && visualization.user_id == user.id
+  end
+
+  private
+
+  # True if array (`['ST_MultiPolygon']`) contains the same elements than string, in PG notation (`{ST_MultiPolygon}`)
+  def equal_pg_array?(array, string)
+    array = [] if array.nil?
+    string = '{}' if string.nil?
+
+    "{#{array.join(',')}}" == string
+  end
+end