Class: Diagrams::Elements::ERDRelationship

Inherits:
Dry::Struct
  • Object
show all
Includes:
Types
Defined in:
lib/diagrams/elements/erd_relationship.rb

Overview

Represents a relationship between two entities in an ER Diagram.

Constant Summary collapse

CARDINALITY =

Cardinality symbols (Crow’s Foot notation mapping)

Types::Strict::Symbol.enum(
  :ZERO_OR_ONE,  # |o
  :ONE_ONLY,     # ||
  :ZERO_OR_MORE, # }o
  :ONE_OR_MORE   # }|
)

Instance Method Summary collapse

Instance Method Details

#to_h ⇒ Hash{Symbol => String | Symbol | Bool}

Returns a hash representation suitable for serialization.

Returns:

  • (Hash{Symbol => String | Symbol | Bool}) 


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# File 'lib/diagrams/elements/erd_relationship.rb', line 27

def to_h
  hash = {
    entity1: entity1,
    entity2: entity2,
    cardinality1: cardinality1.to_s, # Convert symbol to string
    cardinality2: cardinality2.to_s, # Convert symbol to string
    identifying: identifying
  }
  hash[:label] = label if label
  hash
end