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

default

hello

crud migration

crud CR

crud app1

redd

testing

votable_fix

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

## Problem statement
Now that you have your controller properly configured to handle comment submissions, you will need to create a form to get user comments.

For now, you need to:

1. Create a form to take input from users. The input should be for the `body` attribute of your `comments` table.
2. Use `text_area` instead of `text_field`. This does not have a particular functional reason, but `text_area` is more appropriate for taking inputs such as comments.

The form should appear in the `show` view for a particular `link`.

### Important concepts
1. We use #concept=form#form_with#concept# to create forms. When called without any additional parameters, this method will send a `POST` request to the *current* page upon submission.

2. `POST` requests are handled by the `create` action in your controller.

3. To bind a model object to your form, use `form_with` with `model: @instance_variable`.

4. To direct your form request to a specific URL, use `form_with` with `url: my_path`.

5. We need *nested* #concept=CommentRoutes#routes#concept# for comments e.g. `links/2/comments`. Nested routes will allow you to retrieve information such as `params[:link_id]` and `params[:comment_params]` from the same url.  You pass an array to your `model` parameter in `form_with` to build a nested route.
```
form_with (model: [@instance_variable, @instance_variable.comments.build],
```

> **Note:** This is not the entire `form_with` command. `build` is an alias for `new`, so using either works fine.

<br>

## Implementation

# Problem statement
Now that you have your controller properly configured to handle comment submissions, you will need to create a form to get user comments.

For now, you need to:

1. Create a form to take input from users. The input should be for the `body` attribute of your `comments` table.
2. Use `text_area` instead of `text_field`. This does not have a particular functional reason, but `text_area` is more appropriate for taking inputs such as comments.

The form should appear in the `show` view for a particular `link`.

## Important concepts
1. We use #concept=form#form_with#concept# to create forms. When called without any additional parameters, this method will send a `POST` request to the *current* page upon submission.

2. `POST` requests are handled by the `create` action in your controller.

3. To bind a model object to your form, use `form_with` with `model: @instance_variable`.

4. To direct your form request to a specific URL, use `form_with` with `url: my_path`.

5. We need *nested* #concept=CommentRoutes#routes#concept# for comments e.g. `links/2/comments`. Nested routes will allow you to retrieve information such as `params[:link_id]` and `params[:comment_params]` from the same url.  You pass an array to your `model` parameter in `form_with` to build a nested route.
```
form_with (model: [@instance_variable, @instance_variable.comments.build],
```

> **Note:** This is not the entire `form_with` command. `build` is an alias for `new`, so using either works fine.

<br>

# Implementation

Create a web form to take input for comments.

Introduction to Ruby on Rails

CRUD on Rails

Your First Rails Application!

Comments

Create a Bill Split Application Using Ruby on Rails

Testing

Conclusion

Project Challenge: Comments Form

Problem statement