[Apache] How to Fix 'Forbidden You don't have permission to access xxx on this server'

Fixing Apache's 403 Forbidden by checking directory permissions and the Order / Allow directives in httpd.conf.

[PostgreSQL] postmaster.opts is Auto-generated, So Editing It is Pointless

Notes on why editing postmaster.opts is pointless — it's regenerated on restart, so the startup script needs to change.

[PHP] How to Check Options Specified for ./configure

A short note on checking PHP's ./configure options via config.nice and php -i.

[OpenSSL] How to Create Self-Signed Certificates (Ore-ore Certificates)

Three openssl commands to generate a private key, a CSR, and a self-signed certificate.

[Linux] List of Directories That Should Be Backed Up

The minimum set of directories to back up on a Linux server: /home, /var, /usr, and /etc.

[Apache][PHP4] Cannot load /etc/httpd/modules/libphp4.so into server: libpq.so.2.1: cannot open shared object file: No such file or directory

Fixing libpq.so.2.1 not found on Apache + PHP4 by symlinking the PostgreSQL library into /lib.

[PHP4] make[1]: *** [libphp4.la] Error 1

A make clean fix for the libphp4.la error when rebuilding PHP4 from source.

[Ruby on Rails][Haml] Use Backslashes for Line Breaks in Text Mail

Notes on using backslashes (\) to add line breaks inside Haml text-mail templates.

Google Web Fonts are License-wise OK to Use in iPhone/Android Apps

A short note that Google Web Fonts are license-wise OK to use in iPhone and Android apps.

Typekit Fonts Cannot Be Used in iOS/Android Apps Due to License Restrictions

Adobe's reply confirming that Typekit fonts were licensed for websites only and could not be used in iOS or Android apps.

[Ruby] Creating Regular Expressions from Arrays with Regexp.union

Building regular expressions from arrays with Ruby's Regexp.union, shown via an image-extension validator.

[Ruby] How to Register Local Files with CarrierWave

A short memo on registering a local file with a CarrierWave uploader via store!.

[Ruby on Rails] Email Sending Process with Action Mailer

How to configure Rails' Action Mailer to send email via Gmail SMTP.

[Ruby on Rails] How to Use Helper Methods in ActionMailer Views

Using add_template_helper to make custom helpers available inside ActionMailer views.

[Mongoose] Schema.Types.Mixed Requires .markModified Before save

If a Schema.Types.Mixed value won't save, you need to call markModified before save.

[Chrome] "Emoty" Extension to Add Emojis to the Harsh World of GitHub

A Chrome extension that adds emojis to your GitHub interactions.

[Ruby on Rails] File Upload Methods in RSpec

A list of file-upload helper methods available when testing Rails controllers with RSpec.

[Ruby] How to Use will_paginate with Nested Resources

How to use will_paginate with nested resources via a params hash.

[Ruby] How to Use Ransack's sort_link with Nested Resources

Passing controller / action / parent id in a hash so Ransack's sort_link works with nested resources.

[RSpec] Stubbing Constants with stub_const

How to stub constants in RSpec with stub_const, including nested constants under a Class or Module.

[Ruby on Rails] Presence Validation for Boolean Type

Validate Rails Boolean columns with inclusion: {in: [true, false]} instead of presence.

[Ruby on Rails] 'ValidatesTimeliness' for Date and Time Validation

Setting up ValidatesTimeliness for Rails date/time validation, with i18n messages and custom formats.

[Ruby on Rails] How to Get Current Controller Name and Action Name in Views

Notes on reading controller.controller_name and controller.action_name from a Rails view.

[jQuery] Split Date-Time Input Forms into Two and Use Datepicker and Timepicker

Split date-time inputs into two fields and use Datepicker plus Timepicker separately.

[Ruby] Regular Expression to Check Time Format

A Ruby regex for validating HH:MM time strings, wired up as a Rails custom validator.

[RSpec] How to Send Ajax Requests in Controller Tests

A short memo on using RSpec's xhr helper to send Ajax GET and POST requests in controller specs.

[Ruby on Rails] How to Not Check nil with validates numericality

Pass allow_nil: true to validates numericality to skip validation for empty input.

[Ruby on Rails] About .build and build_xxx

.build vs build_xxx in Rails, and how build differs from new for has_one associations.

[jQuery] Prevent Double-clicking and Consecutive Clicks on Forms and Links

A memo of reference links for preventing double-clicking and consecutive clicks on forms and links with jQuery.

[Ruby on Rails] 'Ransack' - Easily Create Complex Search Forms

Introducing the Ransack gem for building complex Rails search forms, with reference links.

How to Arrange Social Buttons Like Twitter and Facebook Horizontally or Vertically

Snippets for arranging social buttons horizontally or vertically with ul/li and CSS.

[Ruby on Rails] The pluck Method is Convenient for Creating Single-Column Arrays

Use Rails 3.2's `pluck` to fetch a single-column array — shorter and faster than `map(&:column)`.

[Windows7] Creating Password-Protected Zip Files

A quick memo: use 7-Zip to create password-protected Zip files on Windows 7.

[Node.js] How to Install the Version Management Tool nvm on Mac

A quick memo on installing the Node.js version manager nvm on Mac.

Performance Monitoring Service 'New Relic' iPhone App is Here!

New Relic's iPhone app lets you check service performance on the go, more useful than expected even on the free plan.

[Ruby] Internationalization (i18n) for state_machine

Localizing state_machine state and event names via i18n YAML and human_state_name.

[Ruby on Rails] Separating seed_fu by Environment

Splitting seed_fu fixtures into per-environment directories and switching them with FIXTURE_PATH.

[Ruby] Removing Half-width and Full-width Spaces from Strings

A short Ruby gsub snippet for stripping both half-width and full-width spaces from a string.

[Git] Installation Steps for CUI Tool tig

brew install tig to get the Git CUI browser tig set up on Mac quickly.

DOCTYPE Declaration and Character Encoding Issues for Supporting Three Mobile Carriers

Fixing mojibake on Japan's three-mobile-carrier sites with a Shift_JIS Content-Type meta tag in HTML and XHTML.

[Sublime Text 2] Solution for Package Control: Install Packages Not Working

Fixing a broken Package Control: Install Packages in Sublime Text 2 by removing the whole config directory.

[Sublime Text] How to Set Up Package Control

Installing Package Control in Sublime Text 2 via the console bootstrap and verifying it in the Command Palette.

[Mac] Installing nkf with Homebrew

Installing the nkf character encoding converter on macOS with brew install nkf.

[Ruby on Rails] CSV Import/Export

Reference links and notes for CSV import/export in Ruby on Rails.

[Chrome] SPDY indicator - Extension to Check SPDY Enable/Disable Status

A quick note on installing the Chrome extension SPDY indicator to check SPDY enable/disable status.

[Ruby on Rails] Setting Conditions for before_filter

Reference links for setting conditions on before_filter in Ruby on Rails.

[RSpec] How to Test Private Methods

How to test private methods in Rails + RSpec by invoking them via Object#send.

Minimum specifications required for Windows 7 operation

Windows 7 minimum system requirements quoted from Microsoft's official spec.

[Ruby on Rails] Grouping validations using with_options

Using with_options to group conditional Active Record validations under a single :if block.

[Ruby on Rails] form_for and form helper summary

A personal cheat sheet of Ruby on Rails form_for and form helpers such as f.select.