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Konstantin Kolotiuk kkolotyuk

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@zandroid
zandroid / paginate_helper.rb
Last active September 26, 2017 21:55
This is a custom link renderer that will format the pagination bar with Bootstrap4
module PaginateHelper
class LinkRenderer < WillPaginate::ActionView::LinkRenderer
protected
def html_container(html)
tag(:nav, tag(:ul, html, class: "pagination"))
end
def previous_or_next_page(page, text, classname)
if page
@vasilakisfil
vasilakisfil / test.rb
Created September 3, 2016 14:39
Ruby calling method performance
require 'benchmark/ips'
class Foo
def bar; end
end
foo = Foo.new
Benchmark.ips do |x|
x.config(:time => 5, :warmup => 2)
@carymrobbins
carymrobbins / setup-postgresql-vagrant.md
Last active May 4, 2023 10:22
Configure PostgreSQL in a Vagrant guest to allow connections from the host.

Configure Postgres

  • Update pg_hba.conf (most likely in /etc/postgresql/9.4/main) with -
    • host all all 0.0.0.0/0 trust
  • Update postgresql.conf to use listen_addresses = '*'
  • Be sure to sudo service postgresql restart

Configure Vagrant

@sebmarkbage
sebmarkbage / JSXSpreadAttributes.md
Last active June 27, 2025 03:53
JSX Spread Attributes

JSX Spread Attributes

If you know all the properties that you want to place on a component a head of time, it is easy to use JSX:

  var component = <Component foo={x} bar={y} />;

Mutating Props is Bad, mkay

@demisx
demisx / active_record_objects_autosave.md
Last active July 4, 2024 14:20
When Active Record Child Objects are Autosaved in Rails

belongs_to:

  1. Assigning an object to a belongs_to association does not automatically save the object. It does not save the associated object either.

has_one:

  1. When you assign an object to a has_one association, that object is automatically saved (in order to update its foreign key).
  2. In addition, any object being replaced is also automatically saved, because its foreign key will change too
  3. If either of these saves fails due to validation errors, then the assignment statement returns false and the assignment itself is cancelled.
  4. If the parent object (the one declaring the has_one association) is unsaved (that is, new_record? returns true) then the child objects are not saved. They will automatically when the parent object is saved.