Always disable autocomplete for date pickers

jQuery UI's date picker Archive and date time picker Archive doesn't work on touch interfaces.

Solution 1: Use Mobiscroll

Another way is to detect touch devices and for those devices use the Date and DateTime picker from Mobiscroll Archive instead:

if (isTouchDevice()) {
  $('.date_picker').scroller();
} else...

The following snippet demonstrates how you could create excel files (with spreadsheet gem Archive ) and format columns so that they follow a specific number format like currencies or dates do.

require 'rubygems'
require 'spreadsheet'

Spreadsheet.client_encoding = 'UTF-8'

book = Spreadsheet::Workbook.new
sheet1 = book.create_worksheet :name => 'test'

money_format = Spreadsheet::Format.new :number_format => "#,##0.00 [$€-407]"
date_format = Spreadsheet::Format.new :num...

Large Rails projects tend to define multiple custom ways to format Dates or DateTimes. This often leads to duplicated format strings, wrong formats and unnecessary introduction of new formats.

to_fs also supports to refer to those formats by name e.g. to_formatted_s(:iso_8601) or to_formatted_s(:short).
to_fs is an alias for to_formatted_s.

Those names are defined in Time::DATE_FORMATS and it's possible to add your own formats. There is a how to in the official [docs](https://api.rubyonrails.org/classes/Date.html#method-i-t...

You've been there: A form cannot be submitted, but you don't see a validation error because the field at fault has no corresponding input field on the form. Because this is usually a bug, you insert debug information listing all errors into the form view. And once the bug is fixed, you forget to take out that debug information.

There is a better way. By copying one of the attached initializers into config/initializers, your forms will always render a small box listing all form errors in the bottom right corner of the screen. This box is n...

Be careful!
The following solution will delete files on a volume. If you don't know exactly what you're doing, you can run into big trouble with your computer.

I play mp3 files on my car stereo that are stored on a SD-Card.
When I've copied those mp3 files to the FAT formatted SD-Card on my Mac, then I will see those nasty resource fork files (beginning with "._") for every file and folder on my car stereo. In most cases those resource fork files are important and invisible and don't bother you – on my car stereo ...

If you are using Mobiscroll for date pickers on touch devices, here is how to localize the Mobiscroll UI into German:

var germanMobiscrollLocalization = {
  preset: 'datetime',
  ampm: false,
  cancelText: 'Abbrechen',
  dateFormat: 'dd.mm.yy',
  dateOrder: 'ddmmyy',
  dayNames: ['Sonntag', 'Montag', 'Dienstag', 'Mittwoch', 'Donnerstag', 'Freitag', 'Samstag'],
  dayNamesShort: ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa'],
 ...

Disabling auto-complete in login forms is probably a bad idea, since it encourages weak passwords.

If you are still forced to implement this (maybe due to legal or policy requirements), this is how:

Prevent browsers from saving the password in the first place. Disabling autocomplete does not improve security.

How to prevent password saving:

To prevent the browser from saving passwords (and usernames), you need to:

• copy username and password to hidden form fields before submitting the login form
• c...

By default, Devise redirects to a sign-in form when accessing a route that requires authentication. If for some reason you do not want this, but use Basic Authentication (and the corresponding browser username/password dialog) instead, this is a simple change.

Note that Devise's default configuration actually only redirects requests for HTML content (as requested by the HTTP Accept header).
For all other formats (like JSON) it would use Basic Auth if the http_authenticatable setting was enabled. So you can simply enable that flag and cl...

Recent IRB versions include a multi-line autocomplete which may be helpful to novice users but can be distracting.

Cycling through options works by pressing the Tab key (as usual), and for some methods you also get some kind of documentation, though the quality of results is usually not on par with your IDE of choice.

I have found that it also slows down my IRB in some cases, or that pressing the Backspace key does not always reliably remove characters, which I find more annoying than useful.

You may disable multi-line autocomplete by

• ...