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

So far, your app opens the `index.html.erb` view for you and displays all the pets in our record as clickable links. 

Next, we want to do the following:
1. Edit `index.html.erb` to display a link to create a *new pet*.
2. Edit `new.html.erb` to display web forms to set attributes for the new pet.
3. Create a `create` method in your `app/controllers/pets_controller.rb` file to handle the creation of a new pet.
4. Edit `show.html.erb` to display details of a pet when you click it.

# Adding new pet
## Edit the *index* view
In your `app/views/pets/index.html.erb` file you need to add a link to take you to the `new.html.erb` view, which will display the form to create a new pet.

To add the link, you will call the `link_to` method, which will create a hyperlink based on given text and where to go.
```
<%= link_to 'New pet', new_pet_path %>
```
This will create a hyperlink with the text "New pet" and take you to `new.html.erb` upon click.

>**Note:** `new_pet_path` is the route set to `pets#new`, which you can check by running #concept=Routes#rails routes#concept#.

## Edit the *new* view
In `new.html.erb`, you need to create forms that allow you to input values for your pet's attributes.

To create a form, you will use the #concept=form#form_with#concept#
 method. In your `app/views/pets/new.html.erb` file, you will add the following:
```
<h1>New Pet</h1>

<%= form_with scope: :pet, url: pets_path, local: true do |form| %>
```

We pass `:pet` as the identifying `scope` for this form. This tells 
`form_with` what the form is for. The `action` attribute for your form points to `/pets/new` by default. We use `url: pets_path` to redirect this. Running `rails routes` you can see that the `POST` requests for this path get sent to `pets#create`–— the `create` action of `PetsController`.

Next, you will use the `FormBuilder` object `form` to build labels and text fields for each of your pet's attributes and to create a `submit` button.
```

 <%= form.label :name %> 
 <%= form.text_field :name %>
 

 
 <%= form.label :age %> 
 <%= form.text_area :age %>
 

 
 <%= form.label :description %> 
 <%= form.text_area :description %>
 

 
 <%= form.submit %>
 
<% end %>
```
 

## The *create* action
To set up a `create` action, you need to open `app/controllers/pets_controller.rb` and add the following:

Learn to add the create and read functionality to our application and how to navigate between different views.

Introduction to Ruby on Rails

CRUD on Rails

Your First Rails Application!

Comments

Testing

Conclusion

CRUD Application: Part 2

Adding new pet

Edit the index view