params.go (1008B)
1 // Copyright 2019 The Hugo Authors. All rights reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 // http://www.apache.org/licenses/LICENSE-2.0
7 //
8 // Unless required by applicable law or agreed to in writing, software
9 // distributed under the License is distributed on an "AS IS" BASIS,
10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 // See the License for the specific language governing permissions and
12 // limitations under the License.
13
14 package resource
15
16 import (
17 "github.com/gohugoio/hugo/common/maps"
18
19 "github.com/spf13/cast"
20 )
21
22 func Param(r ResourceParamsProvider, fallback maps.Params, key any) (any, error) {
23 keyStr, err := cast.ToStringE(key)
24 if err != nil {
25 return nil, err
26 }
27
28 if fallback == nil {
29 return maps.GetNestedParam(keyStr, ".", r.Params())
30 }
31
32 return maps.GetNestedParam(keyStr, ".", r.Params(), fallback)
33 }