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Project Description
Django Shopify Auth
===================

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This Django package makes it easy to integrate Shopify authentication into your Django app. It shares some similarities
with the [shopify_django_app](https://github.com/Shopify/shopify_django_app) project, but with a couple of key
differences:


* It provides a custom Django Authentication scheme based on `AbstractBaseUser` and `RemoteUserBackend`, meaning shops
will be authenticated as "users" of your Django app. This makes it easier to use common Django patterns and libraries
(such as accessing the currently authenticated store as `request.user`).

* It persists users' Shopify access tokens in the database, rather than in the Session, meaning your app will be able
to make API calls on behalf of a user when they're not logged in.

* It supports the authentication flow for new-style "Embedded SDK" Shopify apps.


This project provides one package, `shopify_auth`.
A demonstration Django project using this package is available [here](https://github.com/discolabs/auth_demo)

If you'd like a detailed breakdown of how to set up an app from scratch using this package, I've recorded a a short
series of [five minute screencasts](http://gavinballard.com/shopify-app-in-15-minutes-with-django/) showing how to get
an app using `django-shopify-auth` up and running in under 15 minutes.


Requirements
------------
Django v1.7 - v1.9 is required. Django 1.10 support is not guaranteed but things
should work.

As with the original `shopify_django_app` package, you'll need a [Shopify partner account](http://shopify.com/partners)
and to have created an app in order to get an API key and secret.


Package Installation and Setup
------------------------------
There are a few moving parts to set up, but hopefully the following instructions will make things straightforward.

We're assuming in this setup that you're using a standard Django project layout (the sort that's created with the
`django-admin.py startproject` command). We're also assuming that our project is called `auth_demo` and that the primary
Django app inside our project is going to be called `auth_app`.

If you ever get lost or aren't really sure what to do, you can refer to the [demo app](https://github.com/discolabs/auth_demo)


### 1. Install package
Installation is super easy via `pip`:

```shell
> pip install django-shopify-auth
```

Once you have the package installed, add `shopify_auth` to your `INSTALLED_APPS`.


### 2. Add custom user model
Because `shopify_auth` makes use of Django's authentication system, it provides a custom authentication backend
(`shopify_auth.backends.ShopUserBackend`) which allows authentication through Shopify's OAuth flow.

This backend requires that the user model for your app (specified by `AUTH_USER_MODEL` in your `settings.py`) inherits
from `shopify_auth.models.AbstractShopUser`. To do this, just add something like this to the `models.py` for your
Django app:

```python
# auth_demo/auth_app/models.py
from shopify_auth.models import AbstractShopUser

class AuthAppShopUser(AbstractShopUser):
pass
```

Then make sure that you have the following line or similar in `settings.py`:

```python
AUTH_USER_MODEL = 'auth_app.AuthAppShopUser'
```


### 3. Configure settings
In addition to setting `AUTH_USER_MODEL`, there are a few more required additions to `settings.py`:

```python
# Configure Shopify Application settings
SHOPIFY_APP_NAME = 'Your App Name'
SHOPIFY_APP_API_KEY = os.environ.get('SHOPIFY_APP_API_KEY')
SHOPIFY_APP_API_SECRET = os.environ.get('SHOPIFY_APP_API_SECRET')
SHOPIFY_APP_API_SCOPE = ['read_products', 'read_orders']
SHOPIFY_APP_IS_EMBEDDED = True
SHOPIFY_APP_DEV_MODE = False

# Use the Shopify Auth authentication backend as the sole authentication backend.
AUTHENTICATION_BACKENDS = (
'shopify_auth.backends.ShopUserBackend',
)

# Add the Shopify Auth template context processor to the list of processors.
# Note that this assumes you've defined TEMPLATE_CONTEXT_PROCESSORS earlier in your settings.
TEMPLATE_CONTEXT_PROCESSORS += (
'shopify_auth.context_processors.shopify_auth',
)

# Use the Shopify Auth user model.
AUTH_USER_MODEL = 'auth_app.AuthAppShopUser'

# Set the login redirect URL to the "home" page for your app (where to go after logging on).
LOGIN_REDIRECT_URL = '/'

# Set secure proxy header to allow proper detection of secure URLs behind a proxy.
# This ensures that correct 'https' URLs are generated when our Django app is running behind a proxy like nginx, or is
# being tunneled (by ngrok, for example).
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
```

Note that in the example above, the application API key and API secret are pulled from environment settings, which is a
best practice for Django apps that helps avoid the accidental check-in of sensitive information to source files.

Set `SHOPIFY_APP_IS_EMBEDDED` to `True` if your app has been configured as an Embedded app (you choose this option at
the time of app creation). Setting this will make the app provide a Javascript-based redirect that breaks out of an
embedded app's `<iframe>` during the authentication flow as per [the Shopify documentation](http://docs.shopify.com/embedded-app-sdk)
If `SHOPIFY_APP_IS_EMBEDDED` is `False`, the normal authentication flow for non-Embedded apps will be used.

Setting `SHOPIFY_APP_DEV_MODE` to `True` allows you to test your apps locally by skipping the external OAuth phase for
your app. As it means you can log into your app as any store, you should obviously ***never*** set this to `True` in
production.

Now that all of the settings are configured, you can run `migrate` to set up the database for your new user model:

```shell
> python manage.py migrate
```


### 4. Configure URL mappings
Include `shopify_auth` URLs in your project's `urls.py`:

```python
# urls.py
from django.conf.urls import patterns, include, url

urlpatterns = patterns('',
url(r'login/', include('shopify_auth.urls')),

# ... remaining configuration here ...
)

```


### 5. Create application views
Now that you've gotten the configuration out of the way, you can start building your application.

All views inside your application should be decorated with `@login_required`.
This decorator will check that a user has authenticated through the Shopify OAuth flow.
If they haven't, they'll be redirected to the login screen.

```python
from django.shortcuts import render
from shopify_auth.decorators import login_required

@login_required
def home(request, *args, **kwargs):
return render(request, "my_app/home.html")
```


### 6. Using the Embedded App SDK
If you're using the Embedded App SDK, be aware that the HTML your views return must contained some Javascript in the
`<head>` to properly frame your app within the Shopify Admin.

Generally, all pages you'd like embedded in the Shopify Admin should contain something like this in `<head>`:

```html
<script type="text/javascript" src="https://cdn.shopify.com/s/assets/external/app.js"></script>
<script type="text/javascript">
ShopifyApp.init({
apiKey: '{{ SHOPIFY_APP_API_KEY }}',
shopOrigin: 'https://{{ user.myshopify_domain }}'
});
ShopifyApp.ready(function() {
ShopifyApp.Bar.initialize({
title: '{{ SHOPIFY_APP_NAME }}',
buttons: {}
});
});
</script>
```

Recent versions of Django's `startproject` add `django.middleware.clickjacking.XFrameOptionsMiddleware` to the
`MIDDLEWARE_CLASSES` list in `settings.py`. This prevents pages being loading in an `<iframe>`, meaning your app pages
will not be displayed in the Shopify admin.

To resolve this issue, you should either remove `XFrameOptionsMiddleware` from your `MIDDLEWARE_CLASSES`, or ensure that
all of your app views make use of the `@xframe_options_exempt` decorator.


### 7. Making Shopify API calls
To make Shopify API calls on behalf of a user, we can use the user's `session` property inside a `with` statement:

```python
def view(request, *args, **kwargs):

# Get a list of the user's products.
with request.user.session:
products = shopify.Product.find()

# ... remaining view code ...
```

Behind the scenes, using `with request.user.session` sets up a temporary Shopify API session using the OAuth token we
obtained for that specific user during authentication.

All code wrapped within the `with` statement is executed in the context of the specified user. You should always wrap
calls to the Shopify API using this pattern.


Partner Application Setup
-------------------------
In addition to getting the package up and running in your local Django project, you'll need to configure your
application via the Shopify Partner dashboard. The first part of my brief [screencast series](http://gavinballard.com/shopify-app-in-15-minutes-with-django/)
walks you through the setup of a Shopify Partner application.

An ***important omission*** from the screencast series is that Shopify now requires applications to provide a list of
authorized "Redirection URLs" from the partner dashboard for enhanced security (this wasn't a required setting at the
time of recording the screencasts).

To avoid getting an OAuth error while customers try to install your application, make sure your application's settings
include the absolute URL to `/login/finalize/` (including the trailing slash) in their whitelisted URLs. For example,
if your application resides at `https://myapp.example.com`, then you should include
`https://myapp.example.com/login/finalize/` in the "Redirection URL" section of your application settings.


Questions or Problems?
----------------------

Browse through the code for the demo app:
<https: github.com="" discolabs="" auth_demo="">

Read up on the possible API calls:
<http: api.shopify.com="">

Learn how to use the `shopify_python_api` library:
<http: wiki.shopify.com="" using_the_shopify_python_api="">

Ask technical questions on Stack Overflow:
<http: stackoverflow.com="" questions="" tagged="" shopify="">

Email me:
[gavin@gavinballard.com](mailto:gavin@gavinballard.com)


Release History
---------------

Refer to the [change log](https://github.com/discolabs/django-shopify-auth/blob/master/CHANGELOG.md) for a full list of changes.
Release History

Release History

0.4.8

This version

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
django-shopify-auth-0.4.8.tar.gz (10.6 kB) Copy SHA256 Checksum SHA256 Source Nov 11, 2016

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