Merge pull request #18 from uberswe/issue-15

Adds search pagination

Author: uberswe

database.go

@@ -71,6 +71,31 @@ func seed(db *gorm.DB) {
 			Description: "Learn how to install Go on your machine and read the documentation on the Go website.",
 			URL:         "https://go.dev/learn/",
 		},
+		{
+			Title:       "Uberswe on Github",
+			Description: "I am the creator of Golang Base Project. This is my Github profile.",
+			URL:         "https://github.com/uberswe",
+		},
+		{
+			Title:       "Tournify",
+			Description: "A website to create tournaments or free which uses this project as a base.",
+			URL:         "https://tournify.io",
+		},
+		{
+			Title:       "GORM",
+			Description: "The fantastic ORM library for Golang.",
+			URL:         "https://gorm.io/",
+		},
+		{
+			Title:       "Bootstrap",
+			Description: "Quickly design and customize responsive mobile-first sites with Bootstrap, the world’s most popular front-end open source toolkit, featuring Sass variables and mixins, responsive grid system, extensive prebuilt components, and powerful JavaScript plugins.",
+			URL:         "https://getbootstrap.com/",
+		},
+		{
+			Title:       "Gin Web Framework",
+			Description: "Gin is a HTTP web framework written in Go (Golang). It features a Martini-like API with much better performance -- up to 40 times faster. If you need smashing performance, get yourself some Gin.",
+			URL:         "https://github.com/gin-gonic/gin",
+		},
 	}
 
 	for _, w := range websites {

dist/templates/search.html

@@ -11,6 +11,14 @@ <h3>{{ $result.Title }}</h3>
             <p><a href="{{ $result.URL }}">{{ $result.URL }}</a></p>
         </div>
         {{ end }}
+        <div class="pagination">
+        {{ if .Prev }}
+        <a href="{{ .PrevURL }}">{{ call .Trans "Previous" }}</a>
+        {{ end }}
+        {{ if .Next }}
+        <a href="{{ .NextURL }}">{{ call .Trans "Next" }}</a>
+        {{ end }}
+        </div>
     </div>
 </main>
 

main.go

@@ -107,6 +107,8 @@ func Run() {
 	// We want to handle both POST and GET requests on the /search route. We define both but use the same function to handle the requests.
 	r.GET("/search", controller.Search)
 	r.POST("/search", controller.Search)
+	r.Any("/search/:page", controller.Search)
+	r.Any("/search/:page/:query", controller.Search)
 
 	// We define our 404 handler for when a page can not be found
 	r.NoRoute(controller.NoRoute)

routes/search.go

@@ -6,30 +6,51 @@ import (
 	"github.com/uberswe/golang-base-project/models"
 	"log"
 	"net/http"
+	"net/url"
+	"strconv"
 )
 
 // SearchData holds additional data needed to render the search HTML page
 type SearchData struct {
 	PageData
 	Results []models.Website
+	Prev    bool
+	Next    bool
+	PrevURL string
+	NextURL string
 }
 
 // Search renders the search HTML page and any search results
 func (controller Controller) Search(c *gin.Context) {
+	page := 1
+	resultsPerPage := 5
 	pdS := controller.DefaultPageData(c)
 	pdS.Title = pdS.Trans("Search")
 	pd := SearchData{
 		PageData: pdS,
 	}
-	search := c.PostForm("search")
+	search := ""
+	if c.Request.Method == "POST" && c.Request.RequestURI == "/search" {
+		search = c.PostForm("search")
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("/search/1/%s", url.QueryEscape(search)))
+		return
+	} else {
+		search = c.Param("query")
+		if i, err := strconv.Atoi(c.Param("page")); err == nil {
+			page = i
+		}
+	}
 
 	var results []models.Website
 
 	log.Println(search)
-	search = fmt.Sprintf("%s%s%s", "%", search, "%")
+	searchFilter := fmt.Sprintf("%s%s%s", "%", search, "%")
+	search2 := fmt.Sprintf("%s%s", "%", search)
+	search4 := fmt.Sprintf("%s%s", search, "%")
 
-	log.Println(search)
-	res := controller.db.Where("title LIKE ? OR description LIKE ?", search, search).Find(&results)
+	res := controller.db.
+		Raw(fmt.Sprintf("SELECT * FROM websites WHERE title LIKE ? OR description LIKE ? ORDER BY CASE WHEN title LIKE ? OR description LIKE ? THEN 1 WHEN title LIKE ? OR description LIKE ? THEN 2 WHEN title LIKE ? OR description LIKE ? THEN 4 ELSE 3 END LIMIT %d OFFSET %d", resultsPerPage, resultsPerPage*(page-1)), searchFilter, searchFilter, search, search, search2, search2, search4, search4).
+		Find(&results)
 
 	if res.Error != nil || len(results) == 0 {
 		pd.Messages = append(pd.Messages, Message{
@@ -42,6 +63,14 @@ func (controller Controller) Search(c *gin.Context) {
 	}
 
 	pd.Results = results
+	if len(pd.Results) >= resultsPerPage {
+		pd.Next = true
+		pd.NextURL = fmt.Sprintf("/search/%d/%s", page+1, url.QueryEscape(search))
+	}
+	if page > 1 {
+		pd.Prev = true
+		pd.PrevURL = fmt.Sprintf("/search/%d/%s", page-1, url.QueryEscape(search))
+	}
 
 	c.HTML(http.StatusOK, "search.html", pd)
 }