Class: PassiveRecord::Core::Query

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Includes:
Enumerable
Defined in:
lib/passive_record/core/query.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, conditions = {}) ⇒ Query

Returns a new instance of Query.



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# File 'lib/passive_record/core/query.rb', line 9

def initialize(klass,conditions={})
  @klass = klass
  @conditions = conditions
end

Instance Attribute Details

#conditions ⇒ Object

Returns the value of attribute conditions.



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# File 'lib/passive_record/core/query.rb', line 7

def conditions
  @conditions
end

#klass ⇒ Object

Returns the value of attribute klass.



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# File 'lib/passive_record/core/query.rb', line 7

def klass
  @klass
end

Instance Method Details

#==(other_query) ⇒ Object 



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# File 'lib/passive_record/core/query.rb', line 41

def ==(other_query)
  @klass == other_query.klass && @conditions == other_query.conditions
end

#all ⇒ Object 



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# File 'lib/passive_record/core/query.rb', line 14

def all
  return [] unless conditions
  klass.select do |instance|
    conditions.all? do |(field,value)|
      if value.is_a?(Hash)
        evaluate_nested_conditions(instance, field, value)
      else
        instance.send(field) == value
      end
    end
  end
end

#create(attrs = {}) ⇒ Object 



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# File 'lib/passive_record/core/query.rb', line 28

def create(attrs={})
  klass.create(conditions.merge(attrs))
end

#evaluate_nested_conditions(instance, field, value) ⇒ Object (protected) 



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# File 'lib/passive_record/core/query.rb', line 46

def evaluate_nested_conditions(instance, field, value)
  association = instance.send(field)
  association && value.all? do |(association_field,val)|
    if association.is_a?(Associations::Relation) && !association.singular?
      association.where(association_field => val).any?
    else
      association.send(association_field) == val
    end
  end
end

#first_or_create ⇒ Object 



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# File 'lib/passive_record/core/query.rb', line 32

def first_or_create
  first || create
end

#where(new_conditions = {}) ⇒ Object 



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# File 'lib/passive_record/core/query.rb', line 36

def where(new_conditions={})
  @conditions = new_conditions.merge(conditions)
  self
end