52 lines
2.2 KiB
MySQL
52 lines
2.2 KiB
MySQL
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-- Universal Apply Page: Make Project.roundId nullable and add programId FK
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-- This migration enables projects to be submitted to a program/edition without being assigned to a specific round
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-- Step 1: Add Program.slug for edition-wide apply URLs (nullable for existing programs)
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ALTER TABLE "Program" ADD COLUMN "slug" TEXT;
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CREATE UNIQUE INDEX "Program_slug_key" ON "Program"("slug");
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-- Step 2: Add programId column (nullable initially to handle existing data)
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ALTER TABLE "Project" ADD COLUMN "programId" TEXT;
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-- Step 3: Backfill programId from existing round relationships
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-- Every project currently has a roundId, so we can populate programId from Round.programId
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UPDATE "Project" p
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SET "programId" = r."programId"
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FROM "Round" r
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WHERE p."roundId" = r.id;
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-- Step 4: Verify backfill succeeded (should be 0 rows with NULL programId)
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-- If this fails, manual intervention is needed
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DO $$
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DECLARE
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null_count INTEGER;
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BEGIN
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SELECT COUNT(*) INTO null_count FROM "Project" WHERE "programId" IS NULL;
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IF null_count > 0 THEN
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RAISE EXCEPTION 'Migration failed: % projects have NULL programId after backfill', null_count;
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END IF;
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END $$;
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-- Step 5: Make programId required (NOT NULL constraint)
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ALTER TABLE "Project" ALTER COLUMN "programId" SET NOT NULL;
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-- Step 6: Add foreign key constraint for programId
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ALTER TABLE "Project" ADD CONSTRAINT "Project_programId_fkey"
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FOREIGN KEY ("programId") REFERENCES "Program"("id") ON DELETE CASCADE;
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-- Step 7: Make roundId nullable (allow projects without round assignment)
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ALTER TABLE "Project" ALTER COLUMN "roundId" DROP NOT NULL;
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-- Step 8: Update round FK to SET NULL on delete (instead of CASCADE)
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-- Projects should remain in the database if their round is deleted
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ALTER TABLE "Project" DROP CONSTRAINT "Project_roundId_fkey";
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ALTER TABLE "Project" ADD CONSTRAINT "Project_roundId_fkey"
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FOREIGN KEY ("roundId") REFERENCES "Round"("id") ON DELETE SET NULL;
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-- Step 9: Add performance indexes
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-- Index for filtering unassigned projects (WHERE roundId IS NULL)
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CREATE INDEX "Project_programId_idx" ON "Project"("programId");
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CREATE INDEX "Project_programId_roundId_idx" ON "Project"("programId", "roundId");
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-- Note: The existing "Project_roundId_idx" remains for queries filtering by round
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