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@blaugold
blaugold / typescript-firebase-database-rules.ts
Last active August 10, 2023 07:11
Firebase Database Rules with TypeScript
// Use the TypeScript compiler to check your database rules.
// You'll get the most out of type checking if you define a database schema
// through interfaces and use it both in the web client and with the database rules.
// The compiler will catch misspellings and structural errors.
// It won't check for completeness since all properties are optional.
// Only works with TypeScript 2.1 and up because of mapped types being used.
interface DatabaseRuleSet {
'.read'?: string | boolean
'.write'?: string | boolean
@ndarville
ndarville / business-models.md
Last active January 13, 2024 17:27
Business models based on the compiled list at http://news.ycombinator.com/item?id=4924647. I find the link very hard to browse, so I made a simple version in Markdown instead.

Business Models

Advertising

Models Examples
Display ads Yahoo!
Search ads Google
@joho
joho / gist:3735740
Created September 17, 2012 05:40 — forked from rafaelss/gist:3700977
PostgreSQL 9.2 upgrade steps
Steps to install and run PostgreSQL 9.2 using Homebrew (Mac OS X)
(if you aren't using version 9.1.5, change line 6 with the correct version)
1. launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
2. mv /usr/local/var/postgres /usr/local/var/postgres91
3. brew update
4. brew upgrade postgresql
5. initdb /usr/local/var/postgres -E utf8
6. pg_upgrade -b /usr/local/Cellar/postgresql/9.1.5/bin -B /usr/local/Cellar/postgresql/9.2.0/bin -d /usr/local/var/postgres91 -D /usr/local/var/postgres
7. cp /usr/local/Cellar/postgresql/9.2.0/homebrew.mxcl.postgresql.plist ~/Library/LaunchAgents/
@cdmwebs
cdmwebs / friendly_urls.markdown
Created September 11, 2011 15:50 — forked from jcasimir/friendly_urls.markdown
Friendly URLs in Rails

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.