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|
package tags
import (
"cafe/utils/urls"
"fmt"
"strings"
"github.com/flosch/pongo2/v6"
)
type urlNode struct {
routeName string
params map[string]pongo2.IEvaluator
}
func url(doc *pongo2.Parser, start *pongo2.Token, arguments *pongo2.Parser) (pongo2.INodeTag, *pongo2.Error) {
routeNameToken := arguments.MatchType(pongo2.TokenString)
if routeNameToken == nil {
return nil, arguments.Error("expected route name string", nil)
}
routeName := routeNameToken.Val
params := make(map[string]pongo2.IEvaluator)
for arguments.Remaining() > 0 {
keyToken := arguments.MatchType(pongo2.TokenIdentifier)
if keyToken == nil {
return nil, arguments.Error("expected param key identifier", nil)
}
if arguments.Match(pongo2.TokenSymbol, "=") == nil {
return nil, arguments.Error("expected '=' after param key", nil)
}
valueExpr, err := arguments.ParseExpression()
if err != nil {
return nil, err
}
params[keyToken.Val] = valueExpr
}
return &urlNode{
routeName: routeName,
params: params,
}, nil
}
func (n *urlNode) Execute(ctx *pongo2.ExecutionContext, writer pongo2.TemplateWriter) *pongo2.Error {
path, ok := urls.GetFullPath(n.routeName)
if !ok {
return &pongo2.Error{
Sender: "tag:url",
OrigError: fmt.Errorf("route not found: %s", n.routeName),
}
}
for key, expr := range n.params {
val, err := expr.Evaluate(ctx)
if err != nil {
return err
}
path = strings.ReplaceAll(path, ":"+key, fmt.Sprintf("%v", val.Interface()))
}
_, err := writer.WriteString(path)
if err != nil {
return &pongo2.Error{
Sender: "tag:url",
OrigError: err,
}
}
return nil
}
|
