This naming was introduced in 2016 without explanation [1]. I find it
confusing because:
- It's reminiscent of "_app", which is a Python convention indicating
the variable is internal, so maybe avoid using it.
- It suggests there's some other "app" fixture I should be using (there
isn't, though).
The Python style guide describes using an underscore suffix to avoid
clashes with inbuilt names [1], which is sort of applicable if we need
to import the "app" module [2]. However, we can also avoid clashes by
choosing a different name, without the strange underscore.
[1]: 3b1d521c10
[2]: 78824f54fd/tests/app/main/views/test_forgot_password.py (L5)
The data flow of other bits of our application looks like this:
```
API (returns JSON)
⬇
API client (returns a built in type, usually `dict`)
⬇
Model (returns an instance, eg of type `Service`)
⬇
View (returns HTML)
```
The user API client was architected weirdly, in that it returned a model
directly, like this:
```
API (returns JSON)
⬇
API client (returns a model, of type `User`, `InvitedUser`, etc)
⬇
View (returns HTML)
```
This mixing of different layers of the application is bad because it
makes it hard to write model code that doesn’t have circular
dependencies. As our application gets more complicated we will be
relying more on models to manage this complexity, so we should make it
easy, not hard to write them.
It also means that most of our mocking was of the User model, not just
the underlying JSON. So it would have been easy to introduce subtle bugs
to the user model, because it wasn’t being comprehensively tested. A lot
of the changed lines of code in this commit mean changing the tests to
mock only the JSON, which means that the model layer gets implicitly
tested.
For those reasons this commit changes the user API client to return
JSON, not an instance of `User` or other models.
We were already invitializing InvitedUser with folder_permissions
(defaulting to None), but this removes the default and adds
folder_permissions to the serialize method. Folder permissions should
now always be returned from api, either as an empty list or a list of
UUIDs.
Done using isort[1], with the following command:
```
isort -rc ./app ./tests
```
Adds linting to the `run_tests.sh` script to stop badly-sorted imports
getting re-introduced.
Chosen style is ‘Vertical Hanging Indent’ with trailing commas, because
I think it gives the cleanest diffs, eg:
```
from third_party import (
lib1,
lib2,
lib3,
lib4,
)
```
1. https://pypi.python.org/pypi/isort
When we’re doing user research we often:
- start the task by inviting the participant to a service on Notify
- have them use a prototype version of the admin app, hosted on a
different domain
Currently we can’t do both of these things together, because the invite
emails always send people to notifications.service.gov.uk (because it’s
the API that sends the emails, and the prototype admin app points at the
production API).
This commit changes the admin app to tell the API which host to use when
creating the invite links.
Depends on:
- [ ] https://github.com/alphagov/notifications-api/pull/1515
