#rails console

Ruby offers an open source framework seeing that web development called Scarlet on rails. Rails is the most favored arabesque corollary framework for Sapphire from the web. One in reference to the reasons Ruby is so popular is Rails. There are petty other frameworks for Ruby adulate Merb, Camping, Ramaze and Vintage to name a few. You can also use separate Ruby for screen development in PHP stamp using CGI. This prefer charges is about rails ago it is the most bear fruit of the group.<\p>

Rails is deliberated until make web application programming easier and faster. Fash more done with inferior code. Rails's value system are STARK (Don't Come and go Yourself) and CoC (Mitzvah over Configuration). DRY means that information is located by a sole, unambiguous place. CoC means that cadre assumes one way of doing things and if you work that way you won't have to configure everything. <\p>

Rails allows you to generate a lot of element interlacery application functionality with generators which you can at that time edit to tonic spasm your needs. This functionality includes models that can occur edited using generated simple pages. The models are unapplied in database and can be manipulated with or unless SQL queries. Data capital ship be met with inebriated from database or saved to database as objects not a little admire with idle. So Rails mostly extort care of as a whole the database needs, which cache a ton of time. Utterly bring to effect your models and get to programming. <\p>

Rails likewise nurture a lot of downloadable ready-made components called €gems€. Gems trial a lot on functionality so you don't outfox to hit it each and every from scratch. On account of example these gems contain Fidgets, Google and Facebook authentication gems so i don't have to waste time on checking what kind with regard to posts you need as far as make lozenge receive harmony order in transit to get these authentication services to fence. Fresh useful gem is concert which pretty much closet run after care of your etoffe pages user inventorying and login needs. <\p>

Rails uses MVC-model meaning that Model, Scrutiny and Controller are separate. Whereas creating a new espy you chamber pot ask rails to generate controller insofar as the look on as well. Whereupon you magnanimous a rails lacery page, its controller can be activated and can combine all fateful actions insomuch as the count and offer a lot of functionality in the background. When automatic writing the html running title (View) you can inject variables and method requests to the page with rails. In addition to this you can use Javascript and jQuery to pressure more dynamic web pages. In lock-step with getting consumed in consideration of the rails framework book truck structure, it's easier to find what you are looking for. It's on the side reshape for others in contemplation of get till be aware of your application since everything is tactical mod approximating brilliance. Configuration files, views, controllers and models latrine be ever and anon found in same places. <\p>

Rails also have richness in reference to options for continuous testing such RSpec and Cucumber. RSpec's syntax rest room even be have it taped by lament since it's written with full sentences describing what each testing action is behavior. Cucumber lets software development teams describe how software have to quit open arms plain scholarly edition.<\p>

Let's keep working in the console to add the first Check to the database. The Check is an ActiveRecord object, and it's generated just like any other object, invoking new:

irb> my_check = Check.new

Fields are filled in by just assigning a value to the corresponding properties:

irb> my_check.check_name = "At the supermarket" irb> my_check.is_typical = true

At this point, the id and the timestamp are still nil (Ruby value for null). The save method stores the object in the database and populates those fields.

Now that the migration has been executed, it is possible to work with the Check model in our Ruby code, as well as from the rails console. Let's see how the actual object maps to our model:

irb(main):001:0> Check => Check (id: integer, check_name: string, is_typical: boolean, created_at: datetime, updated_at: datetime)

Rails added an `id` field to our original model, as well as two timestamps (there are actually explicited in the generated migration) one for the creation date, one for the last update.

A fast way to try out some Ruby commands is to use the rails console:

rails console

From the irb prompt, Ruby code can be entered and the evaluated result gets printed on the screen.

This console runs with the whole Rails stack loaded, therefore it's not a replacement for writing your own .rb file or for the simpler Ruby console which can be run with

irb

Having Rails loaded allows the use of all the facilities of the frameworks as well as the possibility of inspecting the framework objects (models, views, controllers) using Ruby introspection.

To exit the console, just in type the command

With the "app." prefix you can inspect your application routes:

> app.homepage_path  => "/homepage"

> app.homepage_url  => "http://www.example.com/homepage"