djangothis with labels

views.py

from importd import d
from path import path
from datetime import datetime

from djangothis.app import dotslash, read_yaml, watchfile
from django.shortcuts import render

posts = None

labels = {}

def get_posts():
    global posts
    if posts is not None: return posts
    posts = []

    _posts = path(dotslash("_posts"))
    if not _posts.exists(): return posts

    for post in _posts.walkfiles():
        if post.endswith(".swp"): continue
        watchfile(post)
        content = post.open().read().decode("utf-8")
        _, header, body = content.split(u"---", 2)
        body = body.replace(u"{% include JB/setup %}", u"")
        header = read_yaml(header)
        y, m, d, slug = post.basename().split("-", 3)
        slug = slug[:-3]
        post = {
            "date": datetime(int(y), int(m), int(d)),
            "url": "/%s/%s/%s.html" % (y, m, slug),
            "title": header["title"],
            "header": header,
            "body": body,
            "labels": header.get("labels", []),
        }
        posts.append(post)
        for label in post["labels"]:
            labels.setdefault(label, []).append(post)
    posts.sort(lambda x, y: cmp(x["date"], y["date"]), reverse=True)
    for items in labels.values():
        items.sort(lambda x, y: cmp(x["date"], y["date"]), reverse=True)
    return posts

get_posts()

def context_processor(request):
    return {
        "settings": d.settings,
        "posts": get_posts(),
        "labels": labels,
    }

def find_post_by_path(pth):
    prev, curr, nex = None, None, None
    for post in get_posts():
        if curr:
            nex = post
            break
        if post["url"] == pth:
            curr = post
        else:
            prev = post
    return prev, curr, nex

@d("/<int4:year>/<int2:month>/<slug:slug>.html")
def post_page(request, year, month, slug):
    prev, curr, nex = find_post_by_path(request.path)
    return "post.html", {
        "previosu": prev,
        "post": curr,
        "next": nex
    }

@d("/tag/<slug:label>/")
def label_page(request, label):
    return render(request, "label.html", {"label": label, "posts": labels[label]})