Class: Squeel::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/squeel/context.rb

Direct Known Subclasses

Adapters::ActiveRecord::Context

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object) ⇒ Context

Returns a new instance of Context.



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# File 'lib/squeel/context.rb', line 7

def initialize(object)
  @object = object
  @engine = @base.arel_engine
  @arel_visitor = Arel::Visitors.visitor_for @engine
  @default_table = Arel::Table.new(@base.table_name, :as => @base.aliased_table_name, :engine => @engine)
  @tables = Hash.new {|hash, key| hash[key] = get_table(key)}
end

Instance Attribute Details

#arel_visitor ⇒ Object (readonly)

Returns the value of attribute arel_visitor.



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# File 'lib/squeel/context.rb', line 5

def arel_visitor
  @arel_visitor
end

#base ⇒ Object (readonly)

Returns the value of attribute base.



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# File 'lib/squeel/context.rb', line 5

def base
  @base
end

#engine ⇒ Object (readonly)

Returns the value of attribute engine.



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# File 'lib/squeel/context.rb', line 5

def engine
  @engine
end

Instance Method Details

#contextualize(object) ⇒ Object 



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# File 'lib/squeel/context.rb', line 23

def contextualize(object)
  @tables[object]
end

#find(object, parent = @base) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/squeel/context.rb', line 15

def find(object, parent = @base)
  raise NotImplementedError, "Subclasses must implement public method find"
end

#sanitize_sql(conditions, parent) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/squeel/context.rb', line 27

def sanitize_sql(conditions, parent)
  raise NotImplementedError, "Subclasses must implement public method sanitize_sql"
end

#traverse(keypath, parent = @base, include_endpoint = false) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/squeel/context.rb', line 19

def traverse(keypath, parent = @base, include_endpoint = false)
  raise NotImplementedError, "Subclasses must implement public method traverse"
end