website/helpers/blog.py

# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd.
# License: GNU General Public License v3. See license.txt

from __future__ import unicode_literals
import webnotes
import webnotes.webutils
from webnotes import _

def clear_blog_cache():
	for blog in webnotes.conn.sql_list("""select page_name from 
		`tabBlog Post` where ifnull(published,0)=1"""):
		webnotes.webutils.delete_page_cache(blog)
	
	webnotes.webutils.delete_page_cache("writers")

@webnotes.whitelist(allow_guest=True)
def get_blog_list(start=0, by=None, category=None):
	import webnotes
	condition = ""
	if by:
		condition = " and t1.blogger='%s'" % by.replace("'", "\'")
	if category:
		condition += " and t1.blog_category='%s'" % category.replace("'", "\'")
	query = """\
		select
			t1.title, t1.name, t1.page_name, t1.published_on as creation, 
				ifnull(t1.blog_intro, t1.content) as content, 
				t2.full_name, t2.avatar, t1.blogger,
				(select count(name) from `tabComment` where
					comment_doctype='Blog Post' and comment_docname=t1.name) as comments
		from `tabBlog Post` t1, `tabBlogger` t2
		where ifnull(t1.published,0)=1
		and t1.blogger = t2.name
		%(condition)s
		order by published_on desc, name asc
		limit %(start)s, 20""" % {"start": start, "condition": condition}
		
	result = webnotes.conn.sql(query, as_dict=1)

	# strip html tags from content
	import webnotes.utils
	
	for res in result:
		from webnotes.utils import global_date_format
		res['published'] = global_date_format(res['creation'])
		if not res['content']:
			res['content'] = webnotes.webutils.get_html(res['page_name'])
		res['content'] = res['content'][:140]
		
	return result

@webnotes.whitelist(allow_guest=True)
def add_comment(args=None):
	"""
		args = {
			'comment': '',
			'comment_by': '',
			'comment_by_fullname': '',
			'comment_doctype': '',
			'comment_docname': '',
			'page_name': '',
		}
	"""
	import webnotes
	import webnotes.utils, markdown2
	
	if not args: args = webnotes.form_dict
	args['comment'] = unicode(markdown2.markdown(args.get('comment') or ''))
	args['doctype'] = "Comment"
	
	page_name = args.get("page_name")
	if "page_name" in args:
		del args["page_name"]
	if "cmd" in args:
		del args["cmd"]
		
	comment = webnotes.bean(args)
	comment.ignore_permissions = True
	comment.insert()
	
	# since comments are embedded in the page, clear the web cache
	webnotes.webutils.clear_cache(page_name)
	
	args['comment_date'] = webnotes.utils.global_date_format(comment.doc.creation)
	template_args = { 'comment_list': [args], 'template': 'app/website/templates/html/comment.html' }
	
	# get html of comment row
	comment_html = webnotes.webutils.build_html(template_args)
	
	# notify commentors 
	commentors = [d[0] for d in webnotes.conn.sql("""select comment_by from tabComment where
		comment_doctype='Blog Post' and comment_docname=%s and
		ifnull(unsubscribed, 0)=0""", args.get('comment_docname'))]
	
	blog = webnotes.doc("Blog Post", args.get("comment_docname"))
	blogger_profile = webnotes.conn.get_value("Blogger", blog.blogger, "profile")
	blogger_email = webnotes.conn.get_value("Profile", blogger_profile, "email")
	
	from webnotes.utils.email_lib.bulk import send
	send(recipients=list(set(commentors + [blogger_email])), 
		doctype='Comment', 
		email_field='comment_by', 
		subject='New Comment on Blog: ' + blog.title, 
		message='%(comment)s<p>By %(comment_by_fullname)s</p>' % args,
		ref_doctype='Blog Post', ref_docname=blog.name)
	
	return comment_html.replace("\n", "")

def get_blog_content(blog_page_name):
	import webnotes.webutils
	content = webnotes.webutils.get_html(blog_page_name)
	import webnotes.utils
	content = webnotes.utils.escape_html(content)
	return content

def get_blog_template_args():
	args = {
		"categories": webnotes.conn.sql_list("select name from `tabBlog Category` order by name")
	}
	args.update(webnotes.doc("Blog Settings", "Blog Settings").fields)
	return args
	
def get_writers_args():
	bloggers = webnotes.conn.sql("""select * from `tabBlogger` 
	 	order by posts desc""", as_dict=1)
		
	args = {
		"bloggers": bloggers,
		"texts": {
			"all_posts_by": _("All posts by")
		},
		"categories": webnotes.conn.sql_list("select name from `tabBlog Category` order by name")
	}
	
	args.update(webnotes.doc("Blog Settings", "Blog Settings").fields)
	return args