How to send HTTP requests using cURL
-
Reading a URL via GET:
curl http://example.com/ -
Defining any HTTP method (like POST or PUT):
curl http://example.com/users/1 -XPUT -
Sending data with a request:
curl http://example.com/users -d"first_name=Bruce&last_name=Wayne"If you use
-dand do not set an HTTP request method it automatically defaults to POST. -
Performing basic authentication:
curl http://user:password@example.com/users/1 -
All together now:
curl http://user:password@example.com/users/1 -XPUT -d"screen_name=batman"
…
Cucumber: Clear localStorage after each scenario
Capybara clears cookies before each scenario, but not other client-side data stores. If your app is using localStorage or sessionStorage, contents will bleed into the next scenario.
Use this hook to remove all site data after each scenario:
After do
if Capybara.current_driver == :selenium && !Capybara.current_url.starts_with?('data:')
page.execute_script <<-JAVASCRIPT
localStorage.clear();
sessionStorage.clear();
JAVASCRIPT
end
end
How to define constants with traits
This is pretty much like defining subclasses through traits with the Modularity gem.
module MyConstantTrait
as_trait do
self::MY_CONSTANT = 'hello universe'
end
end
This would set MY_CONSTANT for any class using the trait.
Of course you can also use parameters (for logic or for setting values, like here):
module ValuesTrait
as_trait do |*args|
self::VALUES = args
end
end
class Foo
does 'va...
Updated: Test that a hash contains a partial hash with RSpec
Update examples so they work without rspec_candy. rspec_candy is no longer maintained.
Hat tip to Michael.
Katapult EOL
Katapult was an endeavor to dramatically speed up starting a new Rails application. However, it turned out to save less time than expected, while requiring more time for maintenance than anticipated. Since its benefits fell too low, we have decided to not continue developing Katapult.
You can still use Katapult for generating ready-to-run applications with model CRUD, authentication and all of Katapult's features, but the rapid development of the web will quickly render the generated code antiquated. Nevertheless, its architecture may remai…
faviconit.com: Most comfortable and free favicon generator
Eduardo Russo was tired of complex favicon creation and created his own favicon generator. It's really easy and allows a lot of image editing before rendering the favicons, in all needed sizes, formats and with the HTML needed to include them!
In Rails applications with Haml …
- put all the favicon files into
/public - store the HTML to
app/views/layouts/_favicon.html - add
= render 'layouts/favicon'to<head>in your application layout(s)
… and you'…
LoDash: isBlank and isPresent mixins
When you need to check a value for presence, don't rely on JavaScript since it considers 0 or "0" false. Also don't rely on LoDash's _.isEmpty:
if ('0') { ... } // false
if (0) { ... } // false
if (!_.isEmpty('0')) { ... } // true (= good)
if (!_.isEmpty(0)) { ... } // false (= not good)
This is because isEmpty it is only meant for objects with a length.
While the name implies that it's meant only for collections, you probably still want something like isBlank or `is…
Active Record and PostgreSQL — Ruby on Rails Guides
Rails guide that covers PostgreSQL-specific column types and usages for Active Record.
You should especially keep in mind the special datatypes that PostgreSQL offers. \
Types like json and array take away a lot of the pain that you had on MySQL projects.
Example use cases for array are tags or storing foreign keys (instead of a join model). You can even index them.
Updated: Running Rails 2 apps with modern MariaDB SQL server
Clarified that re-installing mysql and mysql2 gems is required after switching to MariaDB.
Sass: Do not use comments between selector definitions
Sass lets you easily specify multiple selectors at once like this:
.some-block
&.has-hover,
&:hover
outline: 1px solid red
This will add a red outline on either real hover or when the has-hover class is present. However, adding a comment will void the definition of that line:
.some-block
&.has-hover, // From hoverable.js <-- DON'T
&:hover
outline: 1px solid red
… will simply drop the &.has-hover part.
RubyMine's clipboard can hold more than one string
By pressing Ctrl + Shift + V you can select a recently copied string for pasting.
Howto: Write a proper git commit message
Seven Rules
- Separate subject from body with a blank line
- Limit the subject line to 50 characters (max. 72)
- Capitalize the subject line
- Do not end the subject line with a period
- Use the imperative mood in the subject line
- Wrap the body at 72 characters
- Use the body to explain what and why vs. how
5. Use the imperative mood in the subject line (partially extracted)
If applied, this commit will your subject line here
Good:
- If applied, this commit will refactor subsystem X for readability
- If applie…