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utils.go
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/
utils.go
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package main
import (
"net/http"
"strconv"
)
func getPaginationParams(r *http.Request) (int, int, string, string, string) {
// there are cases when the request is not passed in
if r == nil {
return 0, -1, "updated", "asc", ""
}
keys := r.URL.Query()
page := keys.Get("page")
limit := keys.Get("limit")
sortBy := keys.Get("sortBy")
direction := keys.Get("direction")
search := keys.Get("search")
// convert string to int
intPage, _ := strconv.Atoi(page)
intLimit, _ := strconv.Atoi(limit)
if intPage == 0 {
intPage = 1
}
if intLimit == 0 {
intLimit = -1
}
if sortBy == "" {
sortBy = "created"
}
if direction == "" {
direction = "desc"
}
// offset for page, start index
offset := 0
if intLimit > 0 && intPage > 0 {
// this will give us an offset that includes part of the next/previous page,
// so that all results arent replaced, a "page shifting" effect
offset = (intPage - 1) * intLimit
}
return offset, intLimit, sortBy, direction, search
}
func buildSearchQuery(key string, term string) (string, string) {
arg1 := key + " LIKE ?"
arg2 := "%" + term + "%"
return arg1, arg2
}