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QUEUE=high,normal,low rake resque:work |
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Resque.redis = Redis::Namespace.new(:resque, :redis => $redis) |
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# app/controller/posts_controller.rb | |
class PostsController < ApplicationController | |
before_filter :find_post | |
protected | |
def find_post | |
if id = Slug[params[:id]] | |
@post = Post.find(id) |
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Post.find_each { |post| Slug[post.id.to_s] = post.id.to_s } |
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# app/models/post.rb | |
class Post < ActiveRecord::Base | |
validate :ensure_slug_uniqueness | |
protected | |
# validate | |
def ensure_slug_uniqueness | |
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class PostObserver | |
def after_save(post) | |
Slug[post.slug] = post.id | |
return true | |
end | |
def after_destroy(post) | |
Slug.destroy(post.id) | |
return true | |
end |
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class Slug | |
class << self | |
def [](slug) | |
redis.hget(hash, slug) | |
end | |
def []=(slug, id) | |
if old = self[slug] | |
redis.srem(set(old), slug) |
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class Slug | |
class << self | |
def [](slug) | |
redis.hget(hash, slug) | |
end | |
def []=(slug, id) | |
if old = self[slug] | |
redis.srem(set(old), slug) |
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class Slug | |
class << self | |
def [](slug) | |
redis.hget(hash, slug) | |
end | |
def []=(slug, id) | |
redis.hset(hash, slug, id) | |
end |
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class PostObserver | |
def after_save(post) | |
Slug[post.slug] = post.id.to_s | |
return true | |
end | |
end |