module Sequel::Plugins::SelectOnSkippedUpdate::InstanceMethods

Public Instance Methods

Source

   # File lib/sequel/plugins/select_on_skipped_update.rb
37 def save_changes(opts=OPTS)
38   ret = super
39   run_select_on_skipped_update if ret.nil? && require_modification
40   ret
41 end

If an UPDATE statement was skipped as the object wasn’t modified, run a SELECT query.

Calls superclass method

Private Instance Methods

_update_columns (columns)

Source

   # File lib/sequel/plugins/select_on_skipped_update.rb
46 def _update_columns(columns)
47   ret = super
48   run_select_on_skipped_update if ret.nil? && columns.empty? && require_modification
49   ret
50 end

If an UPDATE statement was skipped as there were no columns to update, run a SELECT query.

Calls superclass method

run_select_on_skipped_update ()

Source

   # File lib/sequel/plugins/select_on_skipped_update.rb
54 def run_select_on_skipped_update
55   ds = _update_dataset
56   unless ds.select(COUNT).single_value! == 1
57     raise(NoMatchingRow, "Attempt to select object did not result in a single row modification")
58   end
59 end

Run a SELECT query on the dataset to determine whether the object still exists in the database. This will result in an exception if a single row is not modified.