Class: AdjustableSchema::Relationship

Inherits:
ApplicationRecord show all
Defined in:
app/models/adjustable_schema/relationship.rb,
app/models/adjustable_schema/relationship/role.rb

Overview

Relationships

‘Relationship` is a core class of Adjustable Schema representing both associations of model classes and connections of individual records.

No constraints are supported yet, so only many-to-many associations are available for now.

Model associations

To represent an association, a ‘Relationship` record should have both `source_type` and `target_type` columns set, with both ID columns set to `NULL`.

Record relationships

To connect individual records, both ‘source` and `target` polymorphic associations shoud be set.

Roles

Many associations with different semantics between the same models can be set using roles (see ‘Relationship::Role`).

Defined Under Namespace

Classes: Role

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.[](**scopes) ⇒ Object 



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# File 'app/models/adjustable_schema/relationship.rb', line 92

def [] **scopes
  scopes
      .map do
        self # rubocop:disable Style
            .send(Config.shortcuts[:source], _1)
            .send(Config.shortcuts[:target], _2)
      end
      .reduce &:or
end

.seed! ⇒ Object 



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# File 'app/models/adjustable_schema/relationship.rb', line 102

def seed!(...)
  AdjustableSchema.deprecator.warn "    \#{self}.\#{__method__} is deprecated and will be removed in v0.12.\n    Please use AdjustableSchema.relationship! instead.\n  TEXT\n\n  AdjustableSchema.relationship!(...)\nend\n".squish

.with_roles ⇒ Object 



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# File 'app/models/adjustable_schema/relationship.rb', line 86

def self.with_roles(&)
  joins(:role)
      .merge Role.instance_eval(&)
end

Instance Method Details

#abstract? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/adjustable_schema/relationship.rb', line 119

def abstract? = not (source or target)

#inspect ⇒ Object 



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# File 'app/models/adjustable_schema/relationship.rb', line 121

def inspect
  "    #<\#{self.class}#\#{id}: \#{\n        source_type\n    }\#{\n        source_id&.then { \"#\#{it}\" }\n    }>-\#{name}->\#{\n        target_type unless target_type == source_type and target_id\n    }\#{\n        target_id&.then { \"#\#{it}\" }\n    }>\n  TEXT\nend\n".chomp.gsub(/-+/, '-')

#name=(role_name) ⇒ Object 



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# File 'app/models/adjustable_schema/relationship.rb', line 114

def name= role_name
  self.role =
      role_name && Role[role_name]
end