Gain insights into Ruby on Rails fundamentals, creating projects, deploying, CRUD operations, user authentication, and session management. Build foundational skills to develop complex applications.

working4.tar.gz

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hello

crud migration

crud CR

crud app1

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testing

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CRUD new1

In this course, you will learn the fundamentals of Ruby on Rails to build your own application.

You will start by learning how to create a new project, deploy to a Rails server, and the Rails design pattern. After that, you’ll learn how to perform CRUD operations, handle user authentication, and manage sessions.

Once you finish this course, you’ll have the foundations in place to build more complex applications to add to your portfolio.

Introduction to Ruby on Rails

There are several parts of our application that share the same code. This goes against one of the principles of Rails: DRY. 

So you will be going back and DRYing your application.

# DRYing the actions
You may have noticed `(params.require( :pet).permit( :name, :age, :description))` used in the `update` method is the same as you did for your `create` method. You can make this section cleaner by creating a private method that handles the parameter permissions.

So, open the `app/controllers/pets_controller.rb` file and add the following lines to it:
```Ruby
private
  def pet_params
    params.require(:pet).permit(:name, :age, :description)
  end
```

Now you can use this method wherever you want to handle permissions for parameters.

So let's modify the `update` and `create` methods appropriately:
```Ruby
def update
  @pet = Pet.find(params[:id])
 
  if @pet.update(pet_params)
    redirect_to @pet
  else
    render 'edit'
  end
end
```
```Ruby
def create
  @pet = Pet.new(pet_params)
  if @pet.save
    redirect_to @pet
  else
    render 'new'
  end
end
```


Learn how to apply the DRY principle to tidy up your application code.

Introduction to Ruby on Rails

CRUD on Rails

Your First Rails Application!

Comments

Testing

Conclusion

DRYing the app

DRYing the actions