-
Notifications
You must be signed in to change notification settings - Fork 0
/
templates.go
83 lines (70 loc) · 2.46 KB
/
templates.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
package main
import (
"html/template"
"path/filepath"
"time"
"github.com/andreagrandi/snippetbox/pkg/forms"
"github.com/andreagrandi/snippetbox/pkg/models"
)
// Define a templateData type to act as the holding structure for
// any dynamic data that we want to pass to our HTML templates.
// At the moment it only contains one field, but we'll add more
// to it as the build progresses.
type templateData struct {
CurrentYear int
Form *forms.Form
Snippet *models.Snippet
Snippets []*models.Snippet
}
// Create a humanDate function which returns a nicely formatted string
// representation of a time.Time object.
func humanDate(t time.Time) string {
return t.Format("02 Jan 2006 at 15:04")
}
// Initialize a template.FuncMap object and store it in a global variable. This is
// essentially a string-keyed map which acts as a lookup between the names of our
// custom template functions and the functions themselves.
var functions = template.FuncMap{
"humanDate": humanDate,
}
func newTemplateCache(dir string) (map[string]*template.Template, error) {
// Initialize a new map to act as the cache.
cache := map[string]*template.Template{}
// Use the filepath.Glob function to get a slice of all filepaths with
// the extension '.page.tmpl'. This essentially gives us a slice of all the
// 'page' templates for the application.
pages, err := filepath.Glob(filepath.Join(dir, "*.page.tmpl"))
if err != nil {
return nil, err
}
// Loop through the pages one-by-one.
for _, page := range pages {
// Extract the file name (like 'home.page.tmpl') from the full file path
// and assign it to the name variable.
name := filepath.Base(page)
// Parse the page template file in to a template set.
ts, err := template.New(name).Funcs(functions).ParseFiles(page)
if err != nil {
return nil, err
}
// Use the ParseGlob method to add any 'layout' templates to the
// template set (in our case, it's just the 'base' layout at the
// moment).
ts, err = ts.ParseGlob(filepath.Join(dir, "*.layout.tmpl"))
if err != nil {
return nil, err
}
// Use the ParseGlob method to add any 'partial' templates to the
// template set (in our case, it's just the 'footer' partial at the
// moment).
ts, err = ts.ParseGlob(filepath.Join(dir, "*.partial.tmpl"))
if err != nil {
return nil, err
}
// Add the template set to the cache, using the name of the page
// (like 'home.page.tmpl') as the key.
cache[name] = ts
}
// Return the map.
return cache, nil
}