transferred Code Ocean from original repository to GitHub

app/models/error.rb

@@ -0,0 +1,14 @@
+class Error < ActiveRecord::Base
+  belongs_to :execution_environment
+
+  scope :for_execution_environment, ->(execution_environment) do
+    Error.find_by_sql("SELECT MAX(created_at) AS created_at, MAX(id) AS id, message, COUNT(*) AS count FROM errors WHERE #{sanitize_sql_hash_for_conditions(execution_environment_id: execution_environment.id)} GROUP BY message ORDER BY count DESC")
+  end
+
+  validates :execution_environment_id, presence: true
+  validates :message, presence: true
+
+  def self.nested_resource?
+    true
+  end
+end