36 lines
783 B
Go
36 lines
783 B
Go
package website
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import (
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"strconv"
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"git.handmade.network/hmn/hmn/src/utils"
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)
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/*
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Parses a path param as a page number, and returns the parsed result and
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a value indicating whether parsing was successful.
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The returned page number is always valid, even when parsing fails. If
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parsing fails (ok is false), you should redirect to the returned
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page number.
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*/
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func ParsePageNumber(
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c *RequestContext,
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paramName string,
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numPages int,
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) (page int, ok bool) {
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page = 1
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if pageString, hasPage := c.PathParams[paramName]; hasPage && pageString != "" {
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if pageParsed, err := strconv.Atoi(pageString); err == nil {
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page = pageParsed
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} else {
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return 1, false
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}
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}
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if page < 1 || numPages < page {
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return utils.IntClamp(1, page, numPages), false
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}
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return page, true
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}
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