43 lines
942 B
Go
43 lines
942 B
Go
// Copyright 2024 Patial Tech (Ankit Patial).
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// All rights reserved.
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package request
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import (
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"fmt"
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"net/http"
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"reflect"
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"strconv"
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)
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type Number interface {
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int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | float32 | float64
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}
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// NumberParam from request query string
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func NumberParam[T Number](r *http.Request, key string) (T, error) {
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var noop T
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if !r.URL.Query().Has(key) {
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return noop, fmt.Errorf("query param: %q is missing", key)
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}
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p := r.URL.Query().Get(key)
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t := reflect.TypeOf(noop)
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k := t.Kind()
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// float param
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if k == reflect.Float32 || k == reflect.Float64 {
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n, err := strconv.ParseFloat(p, 64)
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if err != nil {
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return noop, fmt.Errorf("query param: %q is not a valid float", key)
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}
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return T(n), nil
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}
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// int param
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n, err := strconv.ParseInt(p, 10, 64)
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if err != nil {
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return noop, fmt.Errorf("query param: %q is not a valid integer", key)
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}
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return T(n), nil
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}
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