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16 lines
504 B
16 lines
504 B
class CreateAnnotationDocuments < ActiveRecord::Migration[6.1] |
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def change |
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create_table :annotation_documents do |t| |
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t.references :annotation, null: false |
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t.references :document, null: false, polymorphic: true |
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t.integer :rank, null: false, default: 1 |
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t.timestamps |
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end |
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add_index :annotation_documents, |
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%i[annotation_id document_id document_type], |
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name: "index_annotation_documents_uniqueness", |
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unique: true |
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end |
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end
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