learn-co-curriculum / phase-4-nested-resource-routing-lab

Nested Resource Routing Lab

Learning Goals

• Create nested routes
• Use params in nested routes

Introduction

In this lab, we'll continue working on our Craigslist-style marketplace API, and build out some nested routes to give users easier access to our data.

User -< Item

Get the lab set up by running:

$ bundle install
$ rails db:migrate db:seed

There is seed data in place so you can test your solution out in Postman. You can also run learn test to run the tests.

Instructions

You will need to handle the requests listed below and return the appropriate JSON data in the response.

Note: watch out for Rails' DoubleRenderError as you work. The error is fairly straightforward: Rails only allows render to be called once in an action. We have seen one way to avoid this error: by using conditional code to ensure that only one render executes. A second way to avoid the error is to include an explicit return, eg: return render json: ... to keep any later render statements from executing.

Nested Items Index Route

This route should show all items for one individual user.

GET /users/:user_id/items

Response Body
-------
[
  {
    "id": 1,
    "name": "Non-stick pan",
    "description": "Sticks a bit",
    "price": 10,
    "user_id": 1
  },
  {
    "id": 1,
    "name": "Ceramic plant pots",
    "description": "Plants not included",
    "price": 31,
    "user_id": 1
  }
]

Nested Item Show Route

This route should show one item matching the :id from the URL.

GET /users/:user_id/items/:id

Response Body
-------
{
  "id": 1,
  "name": "Non-stick pan",
  "description": "Sticks a bit",
  "price": 10,
  "user_id": 1
}

Nested Item Create Route

This route should create a new item that belongs to a user.

POST /users/:user_id/items

Headers:
-------
Content-Type: application/json

Request Body:
-------
{
  "name": "Garden gnomes",
  "description": "No refunds",
  "price": 23
}

Response Body:
-------
{
  "id": 2,
  "name": "Garden gnomes",
  "description": "No refunds",
  "price": 23,
  "user_id": 1
}

Resources

• Routing: Nested Resources