maxivak’s gists

maxivak / gc_disable_request

Last active December 22, 2015 18:49

Rails. Disable GC during request

	class ApplicationController < ActionController::Base
	around_filter :gc_disable

	private

	def gc_disable
	GC.disable
	begin
	yield
	ensure

maxivak / rails-www-redirect-routes

Last active April 28, 2021 12:17

Redirect from WWW to a non-WWW version of site in Rails.details:http://maxivak.com/redirect-from-www-to-a-non-www-version-of-site-in-rails/

	Foo::Application.routes.draw do

	constraints(host: /^www\./i) do
	match '(*any)' => redirect { \|params, request\|
	URI.parse(request.url).tap { \|uri\| uri.host.sub!(/^www\./i, '') }.to_s
	}
	end

	# other routes

maxivak / Regex replace with custom function

Created October 1, 2013 12:52

Ruby Regex Examples

 # find all occurrences  of $name in the string
 formula = "$paramname > $value && $x>0"
 s = formula.gsub(/\$([a-z_\d]+)/) do
   name = $1
   if name=='now'
     v = Time.now.utc.now
   else

maxivak / Activity_json_data

Last active March 20, 2018 02:40

ListView with images in Android. Tutorial - http://maxivak.com/listview-with-images-android/

	// populate data from JSON array

	public class MyActivity extends Activity {
	List products;
	ListView lvProducts;

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.main);

maxivak / ImageDownloader

Last active December 28, 2016 20:33

Android ImageDownloader

	/*
	* Copyright (C) 2010 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software

maxivak / MyActivity

Last active April 1, 2017 20:39

GridView with images. Tutorial: http://maxivak.com/showing-images-in-gridview-with-multiple-columns-android/

	// Main Activity

	package com.example.mysamples;

	import android.app.Activity;
	import android.os.Bundle;
	import android.widget.AbsListView;
	import android.widget.GridView;

	import java.util.ArrayList;

maxivak / db_script_mysql

Last active December 30, 2015 15:29

Rails Nested Forms Example - Formtastic, Cocoon. Tutorial is here - http://maxivak.com/rails-3-nested-models-in-one-form-using-formtastic-and-cocoon-gems/

	CREATE TABLE IF NOT EXISTS `projects` (
	`id` int(11) NOT NULL AUTO_INCREMENT,
	`title` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
	PRIMARY KEY (`id`)
	) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci ;

	CREATE TABLE IF NOT EXISTS `tasks` (
	`id` int(11) NOT NULL AUTO_INCREMENT,
	`project_id` int(11) NOT NULL,
	`title` varchar(255) COLLATE utf8_unicode_ci NOT NULL,

maxivak / session_rake_task

Created December 15, 2013 01:47

Rails sessions: rake task to clear old sessions. Details: http://maxivak.com/rails-clear-old-sessions-stored-in-database/

	namespace :sessions do

	desc "Clear expired sessions (more than 3 days old)"
	task :cleanup => :environment do
	sql = "DELETE FROM sessions WHERE (updated_at < '#{Date.today - 3.days}')"
	ActiveRecord::Base.connection.execute(sql)
	end

	end

maxivak / rails_new_app_generate

Last active December 31, 2015 11:39

rails create new project

	# specific version of Rails, with MySQL database

	rails _VERSION_ new myapp -d mysql

	examples:

	rails _3.2.16_ new myapp -d mysql

maxivak / cron_rake_task

Last active December 31, 2015 15:19

Rails. Run rake task from cron

*/10 * * * * /bin/bash -l -c 'cd /var/www/apps/appname/current/ && RAILS_ENV=production bundle exec rake sessions:cleanup >> /var/www/logs/cron.log ' 

Max Ivak maxivak