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26 lines
793 B
26 lines
793 B
10 months ago
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class UnreadMigration < ActiveRecord::Migration[6.0]
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def self.up
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create_table ReadMark, force: true, options: create_options do |t|
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t.references :readable, polymorphic: { null: false }
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t.references :reader, polymorphic: { null: false }
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t.datetime :timestamp, null: false
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t.timestamps
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end
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add_index ReadMark, %i[reader_id reader_type readable_type readable_id], name: "read_marks_reader_readable_index", unique: true
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end
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def self.down
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drop_table ReadMark
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end
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def self.create_options
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options = ""
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if defined?(ActiveRecord::ConnectionAdapters::Mysql2Adapter) \
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&& ActiveRecord::Base.connection.instance_of?(ActiveRecord::ConnectionAdapters::Mysql2Adapter)
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options = "DEFAULT CHARSET=latin1"
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end
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options
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end
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end
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