• JavaScriptPHPHTMLCssPythonWordPressWeb developmentLinuxMySQLAndroid
    WindowsJavaC++ / C#LayoutReactUbuntuYiiDjangoProgramming1C-Bitrix
    LaravelSystem administrationTelegramJSONDebianPostgreSQLIOSGoogleHtaccessWindows Server
    GitMacOSGoogle ChromeCMSWooСommerceBootstrapNginxSQLUnityAPI
  • Ask
  • Leaders

Categories

JavaScriptPHPHTMLCssPythonWordPressWeb developmentLinuxMySQLAndroidWindowsJavaC++ / C#LayoutReactUbuntuYiiDjangoProgramming1C-BitrixLaravelSystem administrationTelegramJSONDebianPostgreSQLIOSGoogleHtaccessWindows ServerGitMacOSGoogle ChromeCMSWooСommerceBootstrapNginxSQLUnityAPI
Programming
JavaScript PHP HTML Css Python WordPress Web development Linux MySQL Android Windows Java C++ / C# Layout React Ubuntu Yii Django Programming 1C-Bitrix Laravel System administration Telegram JSON Debian PostgreSQL IOS Google Htaccess Windows Server
Make a leaderReport
R
R
Roman Mirilaczvili2016-04-13 15:21:19
Ruby on Rails
Roman Mirilaczvili, 2016-04-13 15:21:19

Why was the Observer removed from Rails 4.0?

Why was ActiveRecord::Observer removed from Rails 4.0?
Was it redundant, brought some negative features or something else?

Reply
Answer the question

Answer the question

In order to leave comments, you need to log in

0 answer(s)
Similar questions
C
chuhnevdan2021-04-13 09:38:42
Hello, I have a Django project, the task is the following, there is a csv file, it is necessary to create a table on the page based on it, what is the mistake? 2Reply
B
brikstar2014-12-25 17:00:12
How to get data with has_many through connection? 1Reply
A
Alexander Grishin2016-12-25 17:36:49
How to make a method public in Ruby? 2Reply
E
eldar_web2016-01-01 20:58:42
How in Ruby on Rails to rollback an add if its related ones fail? 1Reply
D
Demigodd2019-05-29 09:58:01
How not to call a query to the DB with each iteration? 1Reply

Didn't find what you were looking for?

Ask your question

Ask a Question

731 491 924 answers to any question

banners