Class: SuperModel::Redis

Inherits:
Base
  • Object
show all
Defined in:
lib/supermodel/redis.rb

Instance Attribute Summary

Attributes inherited from Base

#attributes

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#==, attributes, #clone, create, destroy, destroy_all, #dup, #eql?, #exists?, #has_attribute?, #hash, #id, #id=, #initialize, #known_attributes, known_attributes, #load, method_missing, #new?, raw_find, records, #respond_to?, #respond_to_without_attributes?, #save, #save!, update, #update_attribute, #update_attributes

Methods included from Validations

#save_with_validation

Constructor Details

This class inherits a constructor from SuperModel::Base

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class SuperModel::Base

Class Method Details

.all ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 51

def all
  from_ids(redis.set_members(redis_key))
end

.count ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 47

def count
  redis.set_count(redis_key)
end

.delete_all ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 55

def delete_all
  raise "Not implemented"
end

.find(id) ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 29

def find(id)
  if redis.set_member?(redis_key, id)
    res = self.new(:id => id)
    res.redis_get
    res
  else
    raise(UnknownRecord)
  end
end

.find_by_attribute(key, value) ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 59

def find_by_attribute(key, value)
  item_ids = redis.set_members(redis_key(key, value))
  return if item_ids.empty?
  res = self.new(:id => item_ids.first)
  res.redis_get
  res
end

.first ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 39

def first
  all.first
end

.indexes(*indexes) ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 8

def indexes(*indexes)
  @known_indexes = indexes.map(&:to_s)
end

.known_indexes ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 12

def known_indexes
  @known_indexes ||= []
end

.last ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 43

def last
  all.last
end

.redis ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 4

def redis
  @redis ||= ::Redis.new
end

.redis_key(*args) ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 24

def redis_key(*args)
  args.unshift(self.name.downcase)
  args.join(":")
end

.serialize(*attributes) ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 16

def serialize(*attributes)
  @serialized_attributes = attributes.map(&:to_s)
end

.serialized_attributes ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 20

def serialized_attributes
  @serialized_attributes ||= []
end

Instance Method Details

#destroy ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 77

def destroy
  return if new?

  destroy_indexes
  redis.set_delete(self.class.redis_key, self.id)
  
  attributes.keys.each do |key|
    redis.delete(redis_key(key))
  end
end

#redis_get ⇒ Object 



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# File 'lib/supermodel/redis.rb', line 139

def redis_get
  known_attributes.each do |key|
    result = deserialize_attribute(key, redis.get(redis_key(key)))
    send("#{key}=", result)
  end
end