41 lines
1.5 KiB
Elixir
41 lines
1.5 KiB
Elixir
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defmodule Backend.Repo.Migrations.AddOnDeletes do
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use Ecto.Migration
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def change do
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# Add ON DELETE CASCADE to foreign key relations.
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# crawls -> instances
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execute("ALTER TABLE crawls DROP CONSTRAINT crawls_instance_domain_fkey")
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execute(
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"ALTER TABLE crawls ADD CONSTRAINT crawls_instance_domain_fkey FOREIGN KEY (instance_domain) REFERENCES instances(domain) ON DELETE CASCADE"
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)
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# instance_peers -> instances
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execute("ALTER TABLE instance_peers DROP CONSTRAINT instance_peers_source_domain_fkey")
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execute(
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"ALTER TABLE instance_peers ADD CONSTRAINT instance_peers_source_domain_fkey FOREIGN KEY (source_domain) REFERENCES instances(domain) ON DELETE CASCADE"
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)
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execute("ALTER TABLE instance_peers DROP CONSTRAINT instance_peers_target_domain_fkey")
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execute(
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"ALTER TABLE instance_peers ADD CONSTRAINT instance_peers_target_domain_fkey FOREIGN KEY (target_domain) REFERENCES instances(domain) ON DELETE CASCADE"
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)
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# edges -> instances
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execute("ALTER TABLE edges DROP CONSTRAINT edges_source_domain_fkey")
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execute(
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"ALTER TABLE edges ADD CONSTRAINT edges_source_domain_fkey FOREIGN KEY (source_domain) REFERENCES instances(domain) ON DELETE CASCADE"
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)
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execute("ALTER TABLE edges DROP CONSTRAINT edges_target_domain_fkey")
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execute(
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"ALTER TABLE edges ADD CONSTRAINT edges_target_domain_fkey FOREIGN KEY (target_domain) REFERENCES instances(domain) ON DELETE CASCADE"
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)
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end
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end
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