Class: RDBr::Web::ColumnPreferences

Inherits:
Object
  • Object
show all
Defined in:
lib/rdbr/web/column_preferences.rb

Constant Summary collapse

TRAILING_COLUMNS = 
%w[created_at updated_at discarded_at].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(database:, namespace:, relation:, fixed_columns:, value: nil) ⇒ ColumnPreferences

Returns a new instance of ColumnPreferences.



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# File 'lib/rdbr/web/column_preferences.rb', line 10

def initialize(database:, namespace:, relation:, fixed_columns:, value: nil)
  identity = [ database.adapter, database.name, namespace.name, relation.name ].join('/')
  @columns = relation.columns.reject{|column| fixed_columns.include?(column.name) }
  @preference = parse(value)
  @cookie_name = "rdbr_columns_#{Digest::SHA256.hexdigest(identity).slice(0, 16)}"
  @storage_key = "rdbr.columns.#{identity}"
end

Instance Attribute Details

Returns the value of attribute cookie_name.



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# File 'lib/rdbr/web/column_preferences.rb', line 8

def cookie_name
  @cookie_name
end

#storage_key ⇒ Object (readonly)

Returns the value of attribute storage_key.



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# File 'lib/rdbr/web/column_preferences.rb', line 8

def storage_key
  @storage_key
end

Instance Method Details

#ordered_columns ⇒ Object 



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# File 'lib/rdbr/web/column_preferences.rb', line 18

def ordered_columns
  preferred_names.filter_map{|name| columns_by_name[name] } +
    default_columns.reject{|column| preferred_names.include?(column.name) }
end

#visible_columns ⇒ Object 



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# File 'lib/rdbr/web/column_preferences.rb', line 23

def visible_columns
  visible = ordered_columns.reject{|column| hidden_names.include?(column.name) }
  visible.empty? ? ordered_columns.first(1) : visible
end