Date filter doesn't work via query parameters (Zod validation error) #14

The date filter (startDate / endDate) doesn't work when passed as query parameters. The API returns a Zod validation error expecting date type but receiving string.

Steps to Reproduce

1. Start taskiq-admin
2. Create some tasks
3. Try to filter by date via URL:
   http://localhost:3000/tasks?page=1&perPage=20&search=test&startDate=2026-01-19&endDate=2026-01-21

Expected Behavior

Tasks filtered by date range should be returned.

Actual Behavior

API returns validation error:

{
  "error": true,
  "statusCode": 400,
  "statusMessage": "Validation Error",
  "message": "[{\"expected\":\"date\",\"code\":\"invalid_type\",\"path\":[\"startDate\"],\"message\":\"Invalid input: expected date, received string\"}]"
}

Analysis

Query string parameters are always strings. Zod schema expects JavaScript Date object which is impossible to pass via URL. The schema should coerce string to Date:

// Current (broken)
startDate: z.date().optional()

// Should be
startDate: z.coerce.date().optional()

Environment

• taskiq-admin version: 1.8.1
• Docker image: ghcr.io/taskiq-python/taskiq-admin:1.8.1