How to customize CKEditor dialogs
The article gives a very short tutorial how to customize tabs and fields of CKEditor's dialogs.
Related cards:
Customize tokenization of the MySQL FULLTEXT parser
The way MySQL's FULLTEXT tokenizer splits text into word tokens might not always be what you need. E.g. it splits a word at period characters.
Since the tokenizer has near-zero configuration options (minimum word length and stopwords list), you n...
How to make Rational#to_s return strings without denominator 1 again
The way Rational#to_s works on Ruby has changed from Ruby 1.9 on. Here is how to get the old behavior back.
You may want this for things where Rationals are being used, like when subtracting Date objects from one another.
What's happening?...
How to accept or deny JavaScript confirmation dialogs in Capybara/Selenium
These methods are available to you:
page.driver.browser.switch_to.alert.accept
page.driver.browser.switch_to.alert.dismiss
page.driver.browser.switch_to.alert.text # the confirmation text
[Spreewald](https://github.com/makandra/spree...
Invoices: How to properly round and calculate totals
While it might seem trivial to implement an invoice that sums up items and shows net, gross and vat totals, it actually involves a lot of rules and caveats. It is very easy to create invoices where numbers don't add up and a few cents are missing....
When sessions, cookies and Clearance tokens expire and how to change it
Expiration of Rails sessions
By default Rails sessions expire when the user closes her browser window.
To change this edit your config/initializers/session_store.rb like this:
ActionController::Base.session = ...
How to configure Selenium WebDriver to not automatically close alerts or other browser dialogs
tl;dr
We recommend configuring Selenium's unhandled prompt behavior to "ignore".
When running tests in a real browser, we use Selenium. Each browser is controlled by a specific driver, e.g. Selenium::WebDriver::Chrome for Chrome.
...
How to fix: "unexpected token" error for JSON.parse
When using the json gem, you might run into this error when using JSON.parse:
>> json = 'foo'.to_json
>> JSON.parse(json)
JSON::ParserError: 757: unexpected token at '"foo"'
from /.../gems/json-...
WProofreader: How to manually enable for a WYSIWYG editor instance (with CKeditor 4 example)
WProofreader is a spelling and grammar checking tool that integrates with textareas and numerous WYSIWYG editors.
While it usually activates automatically, depending on your application, it may fail to boot.
In my case, an application was using C...
How to fix: Unable to read files from a VirtualBox shared host folder
When you want to copy/move from a shared folder (on Windows guests, for example) and it fails with absurd error messages (lots of text or an error about the target being read-only), you are probably running on Guest Additions that no longer match ...
How to fix: VirtualBox Guest Additions setup is out of date
When you are trying to install/update VirtualBox Guest Additions on your guest machine but the setup is for a different/older version (for example 4.0.4 tools for a 4.1.x VirtualBox installation), try this:
sudo apt-get install virtualbox-gue...