meutel/go-bouquins
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Offset/limit

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This commit is contained in:
Meutel 2017-08-02 20:17:12 +02:00
parent 444c10cdc8
commit 2115122d59
1 changed files with 27 additions and 7 deletions
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34
bouquins/bouquins.go
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@ -16,9 +16,11 @@ const (
TPL_SERIES = "series.html" TPL_SERIES = "series.html"
TPL_INDEX = "index.html" TPL_INDEX = "index.html"
PARAM_LIST = "list" PARAM_LIST = "list"
PARAM_ORDER = "order" PARAM_ORDER = "order"
PARAM_SORT = "sort" PARAM_SORT = "sort"
PARAM_LIMIT = "limit"
PARAM_OFFSET = "offset"
LIST_AUTHORS = "authors" LIST_AUTHORS = "authors"
LIST_SERIES = "series" LIST_SERIES = "series"
@ -162,6 +164,23 @@ func (app *Bouquins) render(res http.ResponseWriter, tpl string, model interface
} }
} }
func paramInt(name string, req *http.Request) int {
val := req.URL.Query().Get(name)
valInt, err := strconv.Atoi(val)
if err != nil {
log.Print("Invalid value for", name, ":", val)
return 0
}
return valInt
}
func paramOrder(req *http.Request) string {
val := req.URL.Query().Get(PARAM_ORDER)
if val == "desc" || val == "asc" {
return val
}
return ""
}
// ROUTES // // ROUTES //
func (app *Bouquins) IndexPage(res http.ResponseWriter, req *http.Request) { func (app *Bouquins) IndexPage(res http.ResponseWriter, req *http.Request) {
@ -170,16 +189,17 @@ func (app *Bouquins) IndexPage(res http.ResponseWriter, req *http.Request) {
log.Print(err) log.Print(err)
} }
model := NewIndexModel("", count) model := NewIndexModel("", count)
order, sort := req.URL.Query().Get(PARAM_ORDER), req.URL.Query().Get(PARAM_SORT) order, sort := paramOrder(req), req.URL.Query().Get(PARAM_SORT)
limit, offset := paramInt(PARAM_LIMIT, req), paramInt(PARAM_OFFSET, req)
switch req.URL.Query().Get(PARAM_LIST) { switch req.URL.Query().Get(PARAM_LIST) {
case LIST_AUTHORS: case LIST_AUTHORS:
model.Authors, err = app.AuthorsAdv(0, 0, sort, order) model.Authors, err = app.AuthorsAdv(limit, offset, sort, order)
case LIST_SERIES: case LIST_SERIES:
model.Series, err = app.SeriesAdv(0, 0, sort, order) model.Series, err = app.SeriesAdv(limit, offset, sort, order)
case LIST_BOOKS: case LIST_BOOKS:
fallthrough fallthrough
default: default:
model.Books, err = app.BooksAdv(0, 0, sort, order) model.Books, err = app.BooksAdv(limit, offset, sort, order)
} }
if err != nil { if err != nil {
log.Print(err) log.Print(err)