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from django.db import models
from django import forms
from wagtail.core.models import Page, Orderable
from wagtail.core.fields import RichTextField
from wagtail.admin.edit_handlers import FieldPanel, InlinePanel, MultiFieldPanel
from wagtail.images.edit_handlers import ImageChooserPanel
from wagtail.search import index
from modelcluster.fields import ParentalKey, ParentalManyToManyField
from modelcluster.contrib.taggit import ClusterTaggableManager
from taggit.models import TaggedItemBase
from wagtail.snippets.models import register_snippet
class BlogIndexPage(Page):
intro = models.CharField(max_length=500)
def get_context(self, request):
# Update context to include only published posts, ordered by reverse-chron
context = super().get_context(request)
blogpages = self.get_children().live().order_by('-first_published_at')
context['blogpages'] = blogpages
return context
content_panels = Page.content_panels + [
FieldPanel('intro', classname="full")
]
@register_snippet
class BlogPostTag(TaggedItemBase):
content_object = ParentalKey(
'BlogPost',
related_name='tagged_items',
on_delete=models.CASCADE
)
class BlogPost(Page):
date = models.DateField("Post date")
intro = models.CharField(max_length=250)
body = RichTextField(blank=True)
tags = ClusterTaggableManager(through=BlogPostTag, blank=True)
categories = ParentalManyToManyField('blog.BlogCategory', blank=True)
def main_image(self):
gallery_item = self.gallery_images.first()
if gallery_item:
return gallery_item.image
else:
return None
search_fields = Page.search_fields + [
index.SearchField('intro'),
index.SearchField('body'),
]
content_panels = Page.content_panels + [
MultiFieldPanel([
FieldPanel('date'),
FieldPanel('tags'),
FieldPanel('categories', widget=forms.CheckboxSelectMultiple),
], heading="Blog information"),
InlinePanel('gallery_images', label="Gallery images"),
FieldPanel('intro'),
FieldPanel('body', classname="full")
]
class BlogTagIndexPage(Page):
def get_context(self, request):
# Filter by tag
tag = request.GET.get('tag')
blogpages = BlogPost.objects.filter(tags__name=tag)
# Update template context
context = super().get_context(request)
context['blogpages'] = blogpages
return context
@register_snippet
class BlogCategory(models.Model):
name = models.CharField(max_length=255)
panels = [
FieldPanel('name')
]
def __str__(self):
return self.name
class Meta:
verbose_name_plural = 'blog categories'
class BlogPostGalleryImage(Orderable):
page = ParentalKey(BlogPost, on_delete=models.CASCADE, related_name='gallery_images')
image = models.ForeignKey(
'wagtailimages.Image', on_delete=models.CASCADE, related_name='+'
)
caption = models.CharField(blank=True, max_length=250)
panels = [
ImageChooserPanel('image'),
FieldPanel('caption'),
]
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