董海洋
22 lines
586 B
JavaScript
22 lines
586 B
JavaScript
async function paginate(queryFn, sql, params, page = 1, pageSize = 20) {
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const p = Math.max(1, parseInt(page) || 1)
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const ps = Math.min(100, Math.max(1, parseInt(pageSize) || 20))
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const countResult = await queryFn(
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`SELECT COUNT(*) as total FROM (${sql}) AS _paged`,
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params
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)
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const total = countResult[0].total
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const totalPages = Math.ceil(total / ps)
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const offset = (p - 1) * ps
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const data = await queryFn(
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`${sql} LIMIT ${ps} OFFSET ${offset}`,
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params
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)
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return { data, total, page: p, pageSize: ps, totalPages }
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}
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module.exports = { paginate }
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