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Wave 5: Creating a Second Model

Goal

Our task list API should be able to work with an entity called Goal.

Goals are entities that describe a task a user wants to complete.

They contain a title to name the goal.

Our goal for this wave is to be able to create, read, update, and delete different goals. We will create RESTful routes for these different operations.

Writing Tests

This wave requires more test writing.

  • As with incomplete tests in other waves, you should comment out the Exception when implementing a test.
  • The tests you need to write are scaffolded in the test_wave_05.py file.
    • These tests are currently skipped with @pytest.mark.skip(reason="test to be completed by student") and the function body has pass in it. Once you implement these tests you should remove the skip decorator and the pass.
  • For the tests you write, use the requirements in this document to guide your test writing.
    • Pay attention to the exact shape of the expected JSON. Double-check nested data structures and the names of the keys for any mispellings.
  • You can model your tests off of the Wave 01 tests for Tasks.
  • Some tests use a fixture named one_goal that is defined in tests/conftest.py. This fixture saves a specific goal to the test database.

Requirements

Goal Model

There should be a Goal model that lives in app/models/goal.py.

Goals should contain these attributes. Feel free to change the name of the goal_id column if you would like. The tests require the title column to be named exactly as title.

  • goal_id: a primary key for each goal
  • title: text to name the goal

Tips

  • Don't forget to run:
    • flask db migrate every time there's a change in models, in order to generate migrations
    • flask db upgrade to run all generated migrations

CRUD for Goals

The following are required routes for wave 5. Feel free to implement the routes in any order within this wave.

Create a Goal: Valid Goal

As a client, I want to be able to make a POST request to /goals with the following HTTP request body

{
  "title": "My New Goal"
}

and get this response:

201 CREATED

{
  "goal": {
    "id": 1,
    "title": "My New Goal"
  }
}

so that I know I successfully created a goal that is saved in the database.

Get Goals: Getting Saved Goals

As a client, I want to be able to make a GET request to /goals when there is at least one saved goal and get this response:

200 OK

[
  {
    "id": 1,
    "title": "Example Goal Title 1"
  },
  {
    "id": 2,
    "title": "Example Goal Title 2"
  }
]

Get Goals: No Saved Goals

As a client, I want to be able to make a GET request to /goals when there are zero saved goals and get this response:

200 OK

[]

Get One Goal: One Saved Goal

As a client, I want to be able to make a GET request to /goals/1 when there is at least one saved goal and get this response:

200 OK

{
  "goal": {
    "id": 1,
    "title": "Build a habit of going outside daily"
  }
}

Update Goal

As a client, I want to be able to make a PUT request to /goals/1 when there is at least one saved goal with this request body:

{
  "title": "Updated Goal Title"
}

and get this response:

200 OK

{
  "goal": {
    "id": 1,
    "title": "Updated Goal Title"
  }
}

Delete Goal: Deleting a Goal

As a client, I want to be able to make a DELETE request to /goals/1 when there is at least one saved goal and get this response:

200 OK

{
  "details": "Goal 1 \"Build a habit of going outside daily\" successfully deleted"
}

No matching Goal: Get, Update, and Delete

As a client, if I make any of the following requests:

  • GET /goals/<goal_id>
  • UPDATE /goals/<goal_id>
  • DELETE /goals/<goal_id>

and there is no existing goal with goal_id

The response code should be 404.

You may choose the response body.

Make sure to complete the tests for non-existing tasks to check that the correct response body is returned.

Create a Goal: Invalid Goal With Missing Title

As a client, I want to be able to make a POST request to /goals with the following HTTP request body

{}

and get this response:

400 Bad Request

{
  "details": "Invalid data"
}

so that I know I did not create a Goal that is saved in the database.