Add Lastmod field

Create new field in Node
Update Page to look for lastmod field in the front matter. If not present, then assign Date to Lastmod
Update Site, to assign a value to Lastmod (based on the same logic used for Date)

Fixes #733

diff --git a/hugolib/node.go b/hugolib/node.go
index 9be2150584ea2c232869ec25e17875599d4ee1d1..7606e88963b2d0962f3344438714838196eea16f 100644 (file)
--- a/hugolib/node.go
+++ b/hugolib/node.go
@@ -30,6 +30,7 @@ type Node struct {
        Keywords    []string
        Params      map[string]interface{}
        Date        time.Time
+       Lastmod     time.Time
        Sitemap     Sitemap
        URLPath
        paginator     *Pager

diff --git a/hugolib/page.go b/hugolib/page.go
index 56a9ff16a1d7f2fc090176c52c673bf01f8089f9..fd3bddcdb501eb9c8ce9e6d264627b5c3cc176db 100644 (file)
--- a/hugolib/page.go
+++ b/hugolib/page.go
@@ -473,6 +473,11 @@ func (p *Page) update(f interface{}) error {
                        if err != nil {
                                jww.ERROR.Printf("Failed to parse date '%v' in page %s", v, p.File.Path())
                        }
+               case "lastmod":
+                       p.Lastmod, err = cast.ToTimeE(v)
+                       if err != nil {
+                               jww.ERROR.Printf("Failed to parse lastmod '%v' in page %s", v, p.File.Path())
+                       }
                case "publishdate", "pubdate":
                        p.PublishDate, err = cast.ToTimeE(v)
                        if err != nil {
@@ -524,6 +529,11 @@ func (p *Page) update(f interface{}) error {
                        }
                }
        }
+
+       if p.Lastmod.IsZero() {
+               p.Lastmod = p.Date
+       }
+
        return nil
 
 }

diff --git a/hugolib/site.go b/hugolib/site.go
index 2018df4bb6ca97bcc1416bf0e83587fb1d04e9eb..45912abcd01ca9d9a163368e34e11d65feaa7676 100644 (file)
--- a/hugolib/site.go
+++ b/hugolib/site.go
@@ -1065,6 +1065,7 @@ func (s *Site) newTaxonomyNode(t taxRenderInfo) (*Node, string) {
        s.setURLs(n, base)
        if len(t.pages) > 0 {
                n.Date = t.pages[0].Page.Date
+               n.Lastmod = t.pages[0].Page.Lastmod
        }
        n.Data[t.singular] = t.pages
        n.Data["Singular"] = t.singular
@@ -1110,6 +1111,7 @@ func taxonomyRenderer(s *Site, taxes <-chan taxRenderInfo, results chan<- error,
                                taxonomyPagerNode.paginator = pager
                                if pager.TotalPages() > 0 {
                                        taxonomyPagerNode.Date = pager.Pages()[0].Date
+                                       taxonomyPagerNode.Lastmod = pager.Pages()[0].Lastmod
                                }
                                pageNumber := i + 1
                                htmlBase := fmt.Sprintf("/%s/%s/%d", base, paginatePath, pageNumber)
@@ -1168,6 +1170,7 @@ func (s *Site) newSectionListNode(section string, data WeightedPages) *Node {
        }
        s.setURLs(n, section)
        n.Date = data[0].Page.Date
+       n.Lastmod = data[0].Page.Lastmod
        n.Data["Pages"] = data.Pages()
 
        return n
@@ -1205,6 +1208,7 @@ func (s *Site) RenderSectionLists() error {
                                sectionPagerNode.paginator = pager
                                if pager.TotalPages() > 0 {
                                        sectionPagerNode.Date = pager.Pages()[0].Date
+                                       sectionPagerNode.Lastmod = pager.Pages()[0].Lastmod
                                }
                                pageNumber := i + 1
                                htmlBase := fmt.Sprintf("/%s/%s/%d", section, paginatePath, pageNumber)
@@ -1262,6 +1266,7 @@ func (s *Site) RenderHomePage() error {
                        homePagerNode.paginator = pager
                        if pager.TotalPages() > 0 {
                                homePagerNode.Date = pager.Pages()[0].Date
+                               homePagerNode.Lastmod = pager.Pages()[0].Lastmod
                        }
                        pageNumber := i + 1
                        htmlBase := fmt.Sprintf("/%s/%d", paginatePath, pageNumber)
@@ -1282,6 +1287,7 @@ func (s *Site) RenderHomePage() error {
                n.Data["Pages"] = s.Pages[:high]
                if len(s.Pages) > 0 {
                        n.Date = s.Pages[0].Date
+                       n.Lastmod = s.Pages[0].Lastmod
                }
 
                rssLayouts := []string{"rss.xml", "_default/rss.xml", "_internal/_default/rss.xml"}
@@ -1317,6 +1323,7 @@ func (s *Site) RenderSitemap() error {
 
        page := &Page{}
        page.Date = s.Info.LastChange
+       page.Lastmod = s.Info.LastChange
        page.Site = &s.Info
        page.URL = "/"