================
Wagtail Birdsong
================

A plugin for wagtail that allows you to create, send, preview, edit and test email campaigns from within Wagtail.
Campaign templates are created using `mjml <https://mjml.io/>`_.

Basic usage
===========

Install birdsong:

.. code-block:: shell
    
    pip install wagtail-birdsong


Add the following to your installed apps:

.. code-block:: python

    'mjml',
    'birdsong',
    'wagtail.contrib.modeladmin',


Make a new app e.g. ``email``, create a ``models.py`` with a model that extends the included ``Campaign`` model. Some compatible mjml streamfield blocks are included in birdsong for convenience.

.. code-block:: python

    from birdsong.blocks import DefaultBlocks
    from django.db import models
    from wagtail.admin.edit_handlers import StreamFieldPanel
    from wagtail.core.fields import StreamField


    class SaleEmail(Campaign):
        body = StreamField(DefaultBlocks())

        panels = Campaign.panels + [
            StreamFieldPanel('body'),
        ]

Then in the same app, create a ``wagtail_hooks.py`` if it doesn't exist, this is where the admin is created
for content editors to create/edit/send campaigns.

The ``CampaignAdmin`` is just an extension of Wagtail's ``ModelAdmin`` class so most of the same options are available for overriding functionality.

.. code-block:: python

    from wagtail.contrib.modeladmin.options import modeladmin_register
    from birdsong.options import CampaignAdmin

    from .models import SaleEmail


    @modeladmin_register
    class SaleEmailAdmin(CampaignAdmin):
        campaign = SaleEmail
        menu_label = 'Sale Email'
        menu_icon = 'mail'
        menu_order = 200


Create your campaign template in ``{app_folder}/templates/{app_name}/mail/{model_name}.html`` eg ``email/templates/email/mail/sale_email.html``,
alternatively override the ``get_template`` method on your campaign model.

Campaign templates us django-mjml for responsive, well designed emails. To read up how to setup django-mjml you can read the docs `here <https://github.com/liminspace/django-mjml>`_. There is a base template included in Birdsong that can be extended.

``sale_email.html``

.. code-block:: html

    {% extends "birdsong/mail/base_email.html" %}

    {% block email_body %}
    <mj-section>
        <mj-column>
            <mj-text>Hello {{ contact.email }}!</mj-text>
            {% for b in self.body %}
                {{ b }}
            {% endfor %}
        </mj-column>
    </mj-section>
    {% endblock email_body %}


Custom Contact models
=====================

By default the included ``Contact`` model is used for every campaign, sometimes you may want to store extra data, like names and preferences. 
You can override the default ``Contact`` model by setting an option on the admin for your campaign:

``models.py``

.. code-block:: python

    from birdsong.models import Contact
    from django.db import models

    class ExtendedContact(Contact):
        first_name = models.CharField(max_length=255)
        last_name = models.CharField(max_length=255)
        location = models.CharField(max_length=255)


``wagtail_hooks.py``

.. code-block:: python

    from wagtail.contrib.modeladmin.options import ModelAdmin, modeladmin_register
    from birdsong.options import CampaignAdmin

    from .models import ExtendedContact, SaleEmail


    @modeladmin_register
    class SaleEmailAdmin(CampaignAdmin):
        campaign = SaleEmail
        menu_label = 'Sale Email'
        menu_icon = 'mail'
        menu_order = 200
        contact_class = ExtendedContact


    # You may want to add your own modeladmin here to list/edit/add contacts
    @modeladmin_register
    class ContactAdmin(ModelAdmin):
        model = ExtendedContact
        menu_label = 'Contacts'
        menu_icon = 'user'
        list_diplay = ('email', 'first_name', 'last_name', 'location')


Filtering on contact properties
===============================

You might want to only send a campaign to a subset of you ``Contact`` models. Creating a filter using `django-filter <https://django-filter.readthedocs.io/en/master/>`_ and adding it to the ``CampaignAdmin`` allows users to filter on any property.

``filters.py``

.. code-block:: python

    from django_filters import FilterSet
    from django_filters.filters import AllValuesFilter

    from .models import ExtendedContact


    class ContactFilter(FilterSet):
        location = AllValuesFilter()

        class Meta:
            model = ExtendedContact
            fields = ('location',)


``wagtail_hooks.py``

.. code-block:: python

    from wagtail.contrib.modeladmin.options import modeladmin_register
    from birdsong.options import CampaignAdmin

    from .filters import ContactFilter
    from .models import ExtendedContact, SaleEmail


    @modeladmin_register
    class SaleEmailAdmin(CampaignAdmin):
        campaign = SaleEmail
        menu_label = 'Sale Email'
        menu_icon = 'mail'
        menu_order = 200
        contact_class = ExtendedContact
        contact_filter_class = ContactFilter


Users will now be able to send campaigns to a subset of contacts base on location.

Unsubscribe url
===============

Included in birdsong is a basic way to contacts to unsubscribe, just include the url configuration and add the unsubscribe url to your email template.

``urls.py``

.. code-block:: python

    from birdsong import urls as birdsong_urls
    from django.urls import include, path

    urlpatterns = [
        ...
        path('mail/', include(birdsong_urls)),
        ...
    ]

``sale_email.html``

.. code-block:: html

    {% extends "birdsong/mail/base_email.html" %}

    {% block email_body %}
    <mj-section>
        <mj-column>
            <mj-text>Hello {{ contact.email }}!</mj-text>
            {% for b in self.body %}
                {{ b }}
            {% endfor %}
        </mj-column>
    </mj-section>
    <mj-section>
        Click <a href="{{ site.full_url }}{% url 'birdsong:unsubscribe' contact.id %}">here</a> to unsubscribe.
    </mj-section>
    {% endblock email_body %}



## Future features:

- Tests!
- Backends other thans SMTP for sending emails so analytics can be gathered (email opened, bounced etc)
- In place previewing of email templates like `wagtail-livepreview <https://github.com/KalobTaulien/wagtail-livepreview>`_