日了狗的分页

controllers/BlogController.go

@@ -5,6 +5,7 @@ import (
 	"beeblog/service"
 	"github.com/astaxie/beego"
 	"strconv"
+	"fmt"
 )
 
 type BlogController struct {
@@ -22,7 +23,7 @@ func (this *BlogController) Save() {
 	if err == nil {
 		this.Data["json"] = blog
 	} else {
-		this.Data["json"] = models.ReurnError(500,"保存失败")
+		this.Data["json"] = models.ReurnError(500, "保存失败")
 	}
 	this.ServeJSON()
 	return
@@ -46,9 +47,29 @@ func (this *BlogController) Blog1() {
 }
 
 func (this *BlogController) BlogsPage() {
-	blogs,_ := service.FindBlogs()
-	this.Data["Blogs"] = blogs
+	num, _ := this.GetInt("num")
+	size, _ := this.GetInt("size")
+	cat, _ := this.GetInt64("cat")
+	flag, _ := this.GetInt("flag")
+	if num <= 0 {
+		num = 1
+	}
+	if size < 5 {
+		size = 5
+	}
+	if cat <= 0 {
+		cat = -1
+	}
+	fmt.Println("nelson page", num, size, cat)
+	pages, err := service.FindBlogs(num, size, cat, flag)
+	if err != nil {
+		this.Redirect("500.html", 302)
+		return
+	}
+	this.Data["Page"] = pages
+	this.Data["Cat"] = cat
+	this.Data["Flag"] = flag
 	this.Data["IsBlog"] = true
 	this.TplName = "blogs.html"
 
-}
+}

main.go

@@ -15,8 +15,11 @@ func init() {
 }
 func main() {
 	orm.Debug = true
-	orm.RunSyncdb("default",false,true)
-	beego.BConfig.WebConfig.Session.SessionOn = true
+	orm.RunSyncdb("default", false, true)
+	beego.AddFuncMap("NAdd",NAdd)
 	beego.Run()
 }
 
+func NAdd(n1 int, n2 int) int{
+	return n1 + n2
+}

service/BlogService.go

@@ -3,11 +3,26 @@ package service
 import (
 	"github.com/astaxie/beego/orm"
 	"beeblog/models"
+	"beeblog/utils"
 )
 
 type BlogService struct {
 }
 
+func count(num int, size int, cat int64) (*utils.Page, error) {
+	o := orm.NewOrm()
+	qs := o.QueryTable(&models.Blog{})
+	qs.Filter("Delflag", 0)
+	if cat != -1 {
+		qs = qs.Filter("CategoryId", cat)
+	}
+	totalCount, err := qs.Count()
+	if err != nil {
+		return nil, err
+	}
+	return utils.PageUtil(totalCount, num, size), nil
+}
+
 func GetBlog(id int64) (*models.Blog, error) {
 	o := orm.NewOrm()
 	blog := &models.Blog{Id: id}
@@ -18,15 +33,31 @@ func GetBlog(id int64) (*models.Blog, error) {
 	return blog, nil
 }
 
-func FindBlogs() ([]*models.Blog, error) {
+func FindBlogs(num int, size int, cat int64, flag int) (*utils.Page, error) {
+	page, err := count(num, size, cat)
+	if err != nil {
+		return nil, err
+	}
+	var blogs []*models.Blog
 	o := orm.NewOrm()
 	qs := o.QueryTable(&models.Blog{})
-	var blogs []*models.Blog
-	_, err := qs.Filter("Delflag", 0).All(&blogs)
+	qs = qs.Filter("Delflag", 0)
+	if cat != -1 {
+		qs = qs.Filter("CategoryId", cat)
+	}
+	if flag == 0 {
+		qs = qs.OrderBy("-Ctime")
+	} else {
+		qs = qs.OrderBy("-Browses")
+	}
+
+	qs = qs.Limit(size,page.PageNo)
+	_, err = qs.All(&blogs)
 	if err != nil {
 		return nil, err
 	}
-	return blogs, nil
+	page.List = blogs
+	return page, nil
 }
 
 func SaveBlog(blog *models.Blog, strs []string) error {

utils/PageUtil.go

@@ -1,5 +1,10 @@
 package utils
 
+import (
+	"strconv"
+	"fmt"
+)
+
 type Page struct {
 	PageNo     int
 	PageSize   int
@@ -10,10 +15,16 @@ type Page struct {
 	List       interface{}
 }
 
-func PageUtil(count int, pageNo int, pageSize int, list interface{}) Page {
+func PageUtil(count64 int64, pageNo int, pageSize int) *Page {
+	string := strconv.FormatInt(count64, 10)
+	count, _ := strconv.Atoi(string)
 	tp := count / pageSize
-	if count % pageSize > 0 {
-		tp = count / pageSize + 1
+	if count%pageSize > 0 {
+		tp += 1
+	}
+	fmt.Println("tp:",tp,"num",pageNo)
+	if tp < pageNo {
+		pageNo = tp
 	}
-	return Page{PageNo: pageNo, PageSize: pageSize, TotalPage: tp, TotalCount: count, FirstPage: pageNo == 1, LastPage: pageNo == tp, List: list}
+	return &Page{PageNo: pageNo, PageSize: pageSize, TotalPage: tp, TotalCount: count, FirstPage: pageNo == 1, LastPage: pageNo == tp}
 }

views/blogs.html

@@ -42,7 +42,7 @@
             </div>
             <hr style="height:1px;border:none;border-top:1px solid lightgray;"/>
         </div>
-    {{range .Blogs}}
+    {{range .Page.List}}
         <div>
             <div class="home-content">
                 <div class="home-content-title cursor">
@@ -65,17 +65,19 @@
             <nav>
                 <div class="pagination pagination-lg">
                     <ul>
+                    {{if .Page.FirstPage}}
+                            {{else}}
                         <li class="prev">
-                            <a href="#">&laquo;</a>
+                            <a href="/blogs?num={{ .Page.PageNo | NAdd -1}}&flag={{.Flag}}&cat={{.Cat}}">&laquo;</a>
                         </li>
-                        <li><a href="#">1</a></li>
-                        <li><a href="#">2</a></li>
-                        <li><a href="#">3</a></li>
-                        <li class="active"><a href="#">4</a></li>
-                        <li><a href="#">5</a></li>
+                    {{end}}
+                        <li class="active"><a href="javascript:void(0)">{{.Page.PageNo}}</a></li>
+                    {{if .Page.LastPage}}
+                            {{else}}
                         <li class="next">
-                            <a href="#">&raquo;</a>
+                            <a href="/blogs?num={{ .Page.PageNo | NAdd +1}}&flag={{.Flag}}&cat={{.Cat}}">&raquo;</a>
                         </li>
+                    {{end}}
                     </ul>
                 </div>
             </nav>