#rails5

[maxcobmara]

Can ah?

I'm upgrading a Rails 4 app to Rails 5, I used to be a big fan of declarative_authorization, and used it in all of my early apps.

By the time I required any sort of role based authorisation, even CanCan had been deprecated by CanCanCan.

Anyway back to the 4 to 5 upgrade, the declarative_authorization gem no longer works with Rails 5, and the alleged successor forks, I couldn't get to work either. So I am migrating to CanCanCan. So far it has been a relatively painless process, although I'm actually learning a bit deeper about CanCanCan, as declarative_authorization is supremely granular, and I never really had to do granular authorization with CanCanCan. The main issue now is changing;

permitted_to? :auth, :action do block end

to

if can? auth, :action

and in controllers

filter_access_to :controller_actions

to

load_and_authorize_resource

Still got a long way to go.... and 4 more apps to go. Wonder if I can upgrade 5 to 7 though as Rails 6 was kind of a POS. lol

[mikeynine]

Great overview on creating a RESTful JSON API using Rails 5. Very clear and easy to follow! 

Here are part 2 and part 3 also 

[oaklandjudo-blog]

New Post has been published on Ruby on Rails Tuts

New Post has been published on http://www.rortuts.com/ruby-on-rails/rails5-actioncontrollerparameters/

Rails 5: ActionController::Parameters

Rails 5: ActionController::Parameters Now Returns an Object Instead of a Hash.

Lot’s of people got confused. What was that?

So here is a small presentation which will quickly dive into it.

rails 4

raw_parameters = :name => 'rockers',:teams => :team1 => "37" parameters = ActionController::Parameters.new(raw_parameters) parameters # => "name"=>"rockers", "teams"=>"tet", "city"=>"Los Angeles" parameters.to_h # => "teams"=>"team1"=>"37" parameters.slice(:name,:city).to_h # => "name"=>"rockers", "city"=>"Los Angeles" parameters.to_unsafe_h.slice(:name, :city)

  Rails 5

raw_parameters = :name => 'rockers',:teams => :team1 => "37",:city => 'delhi' parameters = ActionController::Parameters.new(raw_parameters) parameters # => <ActionController::Parameters "name"=>"rockers", "teams"=>"team1"=>"37" permitted: false> parameters.to_h # => parameters.slice(:name,:city).to_h # => Calling #to_h on this would return an empty hash because name and city aren’t permitted. parameters.to_unsafe_h.slice(:name, :city) # => "name"=>"et", "city"=>"Los Angeles"

  Note1: By default controller and action parameters are allowed. To explicitly always allow other parameters you can set a configuration option in your application.rb config.always_permitted_parameters = %w( controller action param_1 param_2 )

Note2: this doesn’t affect accessing the keys in the params hash like params[:city]. You can view the Pull Request that implemented this change.

Some Code Snippets for Rails5.:

Json API

def create photos = [] photo_params.each do |p| photo = Photo.new(p) photos << photo if photo.save end render json: photos, status: 201 end def photo_params params.require(:photos).map do |p| ActionController::Parameters.new(p.to_hash).permit(:title, :src) end

  Mandrill inbound webhooks

params = ActionController::Parameters.new( mandrill_events: [ msg: name: 'Francesco', age: 22, role: 'admin' , msg: name: 'steve', age: 22, role: 'admin' ] ) permitted = params.require(:mandrill_events).map # => ["name"=>"Francesco", "age"=>22, "name"=>"steve", "age"=>22]

Params hash in RSpec in Rails 5?

expect_any_instance_of(Hospital).to receive(:update).with(ActionController::Parameters.new('name':'MyString'))

Hey Guys! Hope you enjoyed this session :).If you like it then please share and let us know your views as well, we will try to answer your quetions.

For any proffesional assistance you can checkout our Ruby on Rails Application Development services or contact us.

[awesomecodetutorials]

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[javascriptpro]

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[angularjsdeveloper]

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[angularjs-fan]

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[aginfotechindia]

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[iamadevelopers]

A beginner's guide to the Ruby programming language. ☞ https://goo.gl/ZM65JA #Rails5 #Ruby

[javascriptnext]

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[javascriptfan]

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[awesomecodetutorials]

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[djavu]

Las mejores webs para aprender a programar gratis

Una de las cosas que más abundan en la web son recursos para aprender sobre todo lo que se te ocurra, y programar es una habilidad que puedes obtener a través de un sinfín de plataformas que te ofrecen desde cursos y programas, hasta especialidades o simples tutoriales sobre cuanto lenguaje de programación exista.

Ahora que cada vez más desarrolladores aprenden por su cuenta y a la vez importan menos los títulos universitarios, lanzarte de lleno a formarte aprovechando recursos disponibles en Internet siempre es una buena idea y excelente punto de partida. Por ello, aquí tienes algunos de los mejores sitios web para aprender a programar gratis.

freeCodeCamp

Es esta web no solo puedes aprender a programar gratis, sino que al mismo tiempo ganarás experiencia escribiendo código para organizaciones sin fines de lucro. En freeCodeCamp cuentan con una serie de programas completos de especialización para aprender a programar desde cero.

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En Genbeta

Las mejores webs para descargar fondos de pantalla

Codecademy

Codecademy es famosa por haber sido una de las primeras plataformas para aprender a programar gratis en la web y escribiendo código directamente. Con el tiempo ha evolucionado y ofrece toda una serie de programas de especialización a través de suscripciones de pago.

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edX

edX es una de las plataformas educativas más grandes y famosas en la web. Su catálogo de cientos de cursos provienen todos de universidades o instituciones prestigiosas de todo el mundo, y todos pueden ser tomados completamente gratis.

Por ejemplo, la Universidad Autónoma de Madrid tiene unos cuantos en su haber, para programar aplicaciones web, o aprender sobre ingeniería del software, programar en C, o incluso crear apps para Android. Solo tienes que revisar su amplia oferta.

En Genbeta

Las mejores webs para editar fotos online

YouTube

Si algo sobra en YouTube es contenido, y el educativo --por suerte-- es tan abundante como el de tonterías de gente comiendo jabón. Por ejemplo, no hace mucho Microsoft decidió ofrecer 44 vídeos para aprender a programar con Python si eres principiante.

La misma freeCodeCamp tiene un excelente canal con más recursos de aprendizaje y muchísimos tutoriales y mini cursos. Y aunque esos están todos en inglés, también hay una enorme cantidad de canales de programación en español que enseñan cosas tanto para principiantes como para desarrolladores más avanzados.

Progate

Progate es una interesante plataforma en la que puedes aprender a programar gratis con la ayuda de diapositivas. Progate cuenta con cursos en HTML y CSS, JavaScript, jQuery, Ruby, Ruby on Rails5, Java, Python, Git, SQL, Sass, Go, React, PHP y la línea de comandos.

Si bien no todas sus lecciones son gratis, 18 de ellas sí lo son, así que también sirve como un buen punto de partida para empezar con lo básico y completar unos cuantos ejercicios.

En Genbeta

15 sitios web útiles para visitar casi a diario y guardar en tus favoritos

Code.org

Desde hace años Code.org intentan concienciar sobre la importancia de la programación en el mundo actual, y una parte de su labor es ofrecer material educativo al que han contribuido empresas como Google, Microsoft, Facebook y Twitter.

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Khan Academy es una organización sin fines de lucro cuyo objetivo es proporcionar educación gratuita para todo el mundo. Su catálogo de cursos es bastante amplio y su sección de ciencias de la computación es un excelente recurso.

Ahí te vas a encontrar todo lo necesario para aprender sobre algoritmos, criptografía, teoría de la información e Internet. También hay una sección para aprender a crear webs interactivas con HTML, CSS, JavaScript, y hasta una para crear bases de datos con SQL.

- La noticia Las mejores webs para aprender a programar gratis fue publicada originalmente en Genbeta por Gabriela González .

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