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<?php | |
/** | |
* SplClassLoader implementation that implements the technical interoperability | |
* standards for PHP 5.3 namespaces and class names. | |
* | |
* http://groups.google.com/group/php-standards/web/final-proposal | |
* | |
* // Example which loads classes for the Doctrine Common package in the | |
* // Doctrine\Common namespace. |
It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media
This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.
{ | |
"AWSTemplateFormatVersion": "2010-09-09", | |
"Description": "VPC knowhow template", | |
"Parameters": { | |
"KeyName": { | |
"Description": "Name of an existing EC2 KeyPair to enable SSH access to the instances", | |
"Type": "String", | |
"MinLength": "1", | |
"MaxLength": "64", | |
"AllowedPattern": "[-_ a-zA-Z0-9]*", |
更新: | 2022-03-18 |
---|---|
作者: | @voluntas |
バージョン: | 2022.1 |
URL: | http://voluntas.github.io/ |
from collections import defaultdict | |
import boto3 | |
""" | |
A tool for retrieving basic information from the running EC2 instances. | |
""" | |
# Connect to EC2 | |
ec2 = boto3.resource('ec2') |
Hi there! Since this post was originally written, nvm
has gained some new tools, and some people have suggested alternative (and potentially better) approaches for modern systems. Make sure to have a look at the comments to this article, before following this guide!
Trickier than it seems.
# -*- coding: utf-8 -*- | |
from __future__ import unicode_literals | |
from django.db import migrations, models | |
from wagtail.wagtailcore.models import Page, Site | |
def forwards_func(apps, schema_editor): | |
HomePage = apps.get_model('website', 'HomePage') |