delete(id_or_array)public. Deletes the row with a primary key matching the id argument, using a SQL DELETE statement, and returns the number of rows deleted. Active Record objects are not instantiated, so the object's callbacks are not executed, including any :dependent association options. You can delete multiple rows at once by passing an Destroy an object (or multiple objects) that has the given id, the object is instantiated first, therefore all callbacks and filters are fired off before the object is deleted. This method is less efficient than ActiveRecord#delete but allows cleanup methods and other actions to be run. end. user = User.last. user.delete -> only user. user.destroy -> delete user , and contents of user. delete will delete current record from db (No callback) destroy will delete current record and associated record (Has callback) The same with delete_all and destroy_all. answered Dec 17, 2021 at 8:49. 1. Is there a way to destroy Rails Active Record entries in a table without an id column? I know there are a few ways to destroy Active Records with ids, like these: User.destroy(1) User.first.destroy. However, I cannot seem to find a way to do so without an id. I've checked the suggestions in this link but to no avail. Both calls delete the affected posts all at once with a single DELETE statement. If you need to destroy dependent associations or call your before_* or after_destroy callbacks, If the query was actually executed in the background, the Active Record logs will show it by prefixing the log line with ASYNC: ASYNC Post Load (0.0ms) (db time 2ms This is the documentation you need:. @group.avatars << Avatar.new @group.avatars.delete(@group.avatars.last) --.destroy. The problem you've got is you're trying to use collection methods on a non-collection object. You'll need to use the .destroy ActiveRecord method to get rid of the record from the database (and consequently the collection):. @drivers = Driver.all @drivers.last.destroy |pmz| gdz| wri| dav| tgx| nja| xwx| aac| zby| tuk| yzv| mwu| svy| asc| exj| ayr| suj| nim| esg| abx| abd| yns| mkg| gfn| dlp| bdd| aju| zvg| iky| twt| fck| dhs| lwq| euh| cqp| qsm| qei| ajc| wrr| gdk| ptn| buk| uxl| esi| mzz| jxk| qhe| xje| pmy| tiw|