Class: Listings::Sources::ActiveRecordDataSource

Inherits:
DataSource
  • Object
show all
Defined in:
lib/listings/sources/active_record_data_source.rb

Constant Summary

Constants inherited from DataSource

DataSource::ASC, DataSource::DESC

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from DataSource

for, for_without_active_record, for_without_object, sanitaize_path, #sort

Constructor Details

#initialize(model) ⇒ ActiveRecordDataSource

Returns a new instance of ActiveRecordDataSource.



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# File 'lib/listings/sources/active_record_data_source.rb', line 5

def initialize(model)
  @items = model
  if model.is_a?(ActiveRecord::Relation)
    @items_for_filter = model.clone
    @model_instance = model.klass.new
  else
    @items_for_filter = model
    @model_instance = model.new
  end
end

Instance Attribute Details

#model_instance ⇒ Object (readonly)

Returns the value of attribute model_instance.



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# File 'lib/listings/sources/active_record_data_source.rb', line 3

def model_instance
  @model_instance
end

Instance Method Details

#build_field(path, props) ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 71

def build_field(path, props)
  path = self.class.sanitaize_path(path)
  if path.is_a?(Array)
    ActiveRecordAssociationField.new(path, self)
  else
    ActiveRecordField.new(path, self, props[:query_column])
  end
end

#connection ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 16

def connection
  model_instance.class.connection
end

#filter(field, value) ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 59

def filter(field, value)
  @items = @items.where("#{field.query_column} = ?", value)
end

#items ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 20

def items
  if @items.is_a?(Class)
    if Rails::VERSION::MAJOR == 3
      @items.scoped
    else
      @items.all
    end
  else
    @items
  end
end

#joins(relation) ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 67

def joins(relation)
  @items = @items.eager_load(relation)
end

#paginate(page, page_size) ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 63

def paginate(page, page_size)
  @items = @items.page(page).per(page_size)
end

#scope ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 36

def scope
  @items = yield @items
  @items_for_filter = yield @items_for_filter
end

#search(fields, value) ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 49

def search(fields, value)
  criteria = []
  values = []
  fields.each do |field|
    criteria << "#{field.query_column} like ?"
    values << "%#{value}%"
  end
  @items = @items.where(criteria.join(' or '), *values)
end

#sort_with_direction(field, direction) ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 41

def sort_with_direction(field, direction)
  @items = field.sort @items, direction
end

#transform_items ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 32

def transform_items
  @items = yield @items
end

#values_for_filter(field) ⇒ Object 



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# File 'lib/listings/sources/active_record_data_source.rb', line 45

def values_for_filter(field)
  field.all_values(@items_for_filter)
end