Class: Findable::Base

Inherits:
Object
  • Object
show all
Includes:
ActiveModel::AttributeMethods, ActiveModel::Model, Associations, Inspection
Defined in:
lib/findable/base.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Inspection

#inspect

Constructor Details

#initialize(params = {}) ⇒ Base

Returns a new instance of Base.



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# File 'lib/findable/base.rb', line 133

def initialize(params = {})
  params = params.with_indifferent_access
  params.keys.each {|attr| self.class.define_field(attr) }
  @_attributes = params
end

Class Method Details

.all ⇒ Object

ActiveRecord like APIs



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# File 'lib/findable/base.rb', line 27

delegate :all, to: :query

.column_names ⇒ Object 



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# File 'lib/findable/base.rb', line 33

def column_names
  @_column_names ||= [:id]
end

.create(attrs = {}) ⇒ Object Also known as: create! 



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# File 'lib/findable/base.rb', line 90

def create(attrs = {})
  record = new(attrs)
  record.save
  record
end

.define_field(attr) ⇒ Object

field definitions



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# File 'lib/findable/base.rb', line 17

def define_field(attr)
  unless public_method_defined?(attr)
    define_attribute_methods attr
    define_method(attr) { attributes[attr] }
    column_names << attr.to_sym
  end
end

.delete(obj) ⇒ Object 



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# File 'lib/findable/base.rb', line 117

def delete(obj)
  if _id = id_from(obj)
    query.delete(_id)
  end
end

.exists?(obj) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/findable/base.rb', line 109

def exists?(obj)
  if _id = id_from(obj)
    query.exists?(_id)
  else
    false
  end
end

.find(ids) ⇒ Object 



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# File 'lib/findable/base.rb', line 37

def find(ids)
  if records = find_by_ids(ids).presence
    ids.is_a?(Array) ? records : records.first
  else
    raise RecordNotFound.new(self, id: ids)
  end
end

.find_by(conditions) ⇒ Object 



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# File 'lib/findable/base.rb', line 45

def find_by(conditions)
  if conditions.is_a?(Hash)
    conditions.symbolize_keys!
    if id = conditions.delete(:id)
      records = find_by_ids(id)
      case
      when records.empty? then nil
      when conditions.empty? then records.first
      else
        records.detect {|record|
          conditions.all? {|k, v| record.public_send(k) == v }
        }
      end
    else
      all.detect {|record|
        conditions.all? {|k, v| record.public_send(k) == v }
      }
    end
  else
    find_by_ids(conditions).first
  end
end

.find_by!(conditions) ⇒ Object 



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# File 'lib/findable/base.rb', line 68

def find_by!(conditions)
  find_by(conditions.dup) || (raise RecordNotFound.new(self, conditions))
end

.find_by_ids ⇒ Object

Query APIs



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# File 'lib/findable/base.rb', line 105

delegate :find_by_ids, :insert, to: :query

.primary_key ⇒ Object 



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# File 'lib/findable/base.rb', line 29

def primary_key
  "id"
end

.query ⇒ Object 



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# File 'lib/findable/base.rb', line 123

def query
  @_query ||= Query.new(self)
end

.where(conditions) ⇒ Object 



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# File 'lib/findable/base.rb', line 72

def where(conditions)
  conditions.symbolize_keys!
  if id = conditions.delete(:id)
    records = find_by_ids(id)
    if conditions.empty?
      records
    else
      records.select {|record|
        conditions.all? {|k, v| record.public_send(k) == v }
      }
    end
  else
    all.select {|record|
      conditions.all? {|k, v| record.public_send(k) == v }
    }
  end
end

Instance Method Details

#attribute=(attr, value) ⇒ Object 



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# File 'lib/findable/base.rb', line 173

def attribute=(attr, value)
  attributes[attr.to_sym] = value
end

#attribute?(attr) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/findable/base.rb', line 177

def attribute?(attr)
  attributes[attr.to_sym].present?
end

#attributes ⇒ Object 



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# File 'lib/findable/base.rb', line 169

def attributes
  @_attributes ||= ActiveSupport::HashWithIndifferentAccess.new
end

#delete ⇒ Object Also known as: destroy 



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# File 'lib/findable/base.rb', line 164

def delete
  self.class.delete(self)
end

#hash ⇒ Object 



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# File 'lib/findable/base.rb', line 147

def hash
  id.hash
end

#id ⇒ Object 



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# File 'lib/findable/base.rb', line 139

def id
  attributes[:id].presence
end

#id=(value) ⇒ Object 



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# File 'lib/findable/base.rb', line 143

def id=(value)
  attributes[:id] = value
end

#new_record? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/findable/base.rb', line 151

def new_record?
  id ? !self.class.exists?(self) : true
end

#persisted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/findable/base.rb', line 155

def persisted?
  !new_record?
end

#save ⇒ Object Also known as: save! 



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# File 'lib/findable/base.rb', line 159

def save
  self.class.insert(self)
end