lb-

from wagtail.wagtailforms.models import AbstractFormField, FORM_FIELD_CHOICES
class FormField(AbstractFormField):
    FORM_FIELD_CHOICES = list(FORM_FIELD_CHOICES) + [('image', 'Upload Image')]
    field_type = models.CharField(
        verbose_name=_('field type'),
        max_length=16,
        choices=FORM_FIELD_CHOICES)
    page = ParentalKey('FormPage', related_name='form_fields')

lb-

from wagtail.wagtailforms.forms import FormBuilder
from wagtail.wagtailimages.fields import WagtailImageField

class ExtendedFormBuilder(FormBuilder):
    def create_image_upload_field(self, field, options):
        return WagtailImageField(**options)
    FIELD_TYPES = FormBuilder.FIELD_TYPES
    FIELD_TYPES.update({
        'image': create_image_upload_field,
    })

lb-

# definition of ExtendedFormBuilder or import from another file above the Formpage class

class FormPage(AbstractEmailForm):
    form_builder = ExtendedFormBuilder
    # the rest of the form page definition ...

lb-

class FormPage(AbstractEmailForm):
    form_builder = ExtendedFormBuilder # see the step above

    def serve(self, request, *args, **kwargs):
        if request.method == 'POST':
            # form = self.get_form(request.POST, page=self, user=request.user)  # Original line
            form = self.get_form(request.POST, request.FILES, page=self, user=request.user)

            if form.is_valid():
                self.process_form_submission(form)

lb-

{% extends "base.html" %}
{% load wagtailcore_tags %}

{% block content %}
    {{ self.intro }}
    <form action="{% pageurl self %}" method="POST" enctype="multipart/form-data">
        {% csrf_token %}
        {{ form.as_p }}
        <input type="submit">
    </form>

lb-

from wagtail.wagtailimages import get_image_model
class FormPage(AbstractEmailForm):
    form_builder = ExtendedFormBuilder # as per step 3

    def serve(self, request, *args, **kwargs):
        # ... as per step 4

    def process_form_submission(self, form):
        cleaned_data = form.cleaned_data

lb-

from wagtail.wagtailforms.models import AbstractFormField, FORM_FIELD_CHOICES
from wagtail.wagtailforms.forms import FormBuilder
from wagtail.wagtailimages.fields import WagtailImageField


def filename_to_title(filename):
    from os.path import splitext
    if filename:
        result = splitext(filename)[0]
        result = result.replace('-', ' ').replace('_', ' ')

lb-

# Your init script
#
# Atom will evaluate this file each time a new window is opened. It is run
# after packages are loaded/activated and after the previous editor state
# has been restored.
#
# An example hack to log to the console when each text editor is saved.
#
# atom.workspace.observeTextEditors (editor) ->
#   editor.onDidSave ->

lb-

"""Node model and Node admin interaction."""

from django import forms
from django.conf.urls import url
from django.contrib.admin.utils import quote, unquote
from django.core.exceptions import PermissionDenied
from django.core.validators import MinLengthValidator, RegexValidator
from django.db import models
from django.shortcuts import get_object_or_404
from django.template.loader import render_to_string

lb-

This appears to be covered here: http://docs.wagtail.io/en/v2.0.1/advanced_topics/settings.html - cross check all settings

Settings

Refer to Django settings - https://docs.djangoproject.com/en/2.0/ref/settings/