func TestPager(t *testing.T) {
cursor := helper.NewPagerCursor(5, 99)
Convey("test pager", t, func() {
Convey("test all pager", func() {
var i = 1
for i = 1; i < 100; i++ {
if p := cursor.Page(i); p == nil {
break
}
}
So(i-1, ShouldEqual, 20)
p := cursor.Page(-1)
So(p, ShouldBeNil)
})
Convey("each pager", func() {
p := cursor.Page(1)
So(p.Prev, ShouldEqual, 0)
So(p.PrevUrl(), ShouldBeEmpty)
p = cursor.Page(20)
So(p.Prev, ShouldEqual, 19)
So(p.Next, ShouldEqual, 0)
So(p.End, ShouldEqual, 99)
So(p.NextUrl(), ShouldBeEmpty)
p = cursor.Page(10)
p.SetLayout("page%d")
So(p.PrevUrl(), ShouldEqual, "page9")
So(p.NextUrl(), ShouldEqual, "page11")
})
})
}
// compile paged posts to html
func (b *Builder) compilePagedPost(ctx *Context) {
// post pagination
var (
currentPosts []*model.Post = nil
cursor = helper.NewPagerCursor(4, len(ctx.Posts))
page int = 1
layout = "posts/%d"
)
for {
pager := cursor.Page(page)
if pager == nil {
ctx.PostPageCount = page - 1
break
}
currentPosts = ctx.Posts[pager.Begin:pager.End]
pager.SetLayout("/" + layout + ".html")
dstFile := path.Join(ctx.DstDir, fmt.Sprintf(layout+".html", pager.Page))
viewData := ctx.ViewData()
viewData["Title"] = fmt.Sprintf("Page %d - %s", pager.Page, ctx.Meta.Title)
viewData["Posts"] = currentPosts
viewData["Pager"] = pager
if err := b.compileTemplate(ctx, "posts.html", viewData, dstFile); err != nil {
ctx.Error = err
return
}
if page == 1 {
ctx.indexPosts = currentPosts
ctx.indexPager = pager
}
page++
}
}