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Contents
require 'active_support'
module NinjaModel
module QueryMethods
extend ActiveSupport::Concern
def order(*args)
relation = clone
relation.ordering += args.flatten unless args.blank?
relation
end
def where(opts, *rest)
relation = clone
relation.predicates += build_predicates(opts, rest)
relation
end
def limit(value)
relation = clone
relation.limit_value = value
relation
end
private
def build_predicates(opts, other = [])
case opts
when String
raise ArgumentError,
"NinjaModel doesn't work with strings...yet. You'll need to use a predicate (see NinjaModel::Predicate::PREDICATES for a list)."
when Array
opts.collect do |o|
build_predicates(o)
end.flatten!
when Hash
opts.to_a.map do |o|
raise ArgumentError, "Not sure what to do with #{o}" unless o.length.eql?(2)
k = o[0]
v = o[1]
case k
when NinjaModel::Predicate
k.value = klass.model_attributes_hash[k.attribute].convert(v)
k
when Symbol, String
raise ArgumentError, "#{klass} doesn't have an attribute #{k}." unless klass.attribute_method?(k)
p = NinjaModel::Predicate.new(k.to_sym, :eq)
p.value = klass.model_attributes_hash[p.attribute].convert(v)
p
else
raise ArgumentError, "#{k} isn't a predicate or a symbol."
end
end
when NinjaModel::Predicate
[opts]
else
raise ArgumentError, "Unknown argument to #{self}.where: #{opts.inspect}"
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems