feat: clicktoload

clicktoload/handlers.go

@@ -0,0 +1,41 @@
+package clicktoload
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/rs/xid"
+)
+
+type user struct {
+	name, email, id string
+}
+
+func Handlers(prefix string, mux *http.ServeMux) {
+	mux.HandleFunc(prefix+"/", index)
+	mux.HandleFunc(prefix+"/contacts/", getPage)
+}
+
+func index(w http.ResponseWriter, r *http.Request) {
+	// Load users
+	Index(getUsers(1)).Render(r.Context(), w)
+}
+
+func getPage(w http.ResponseWriter, r *http.Request) {
+	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
+	tbody(getUsers(page), page).Render(r.Context(), w)
+}
+
+func getUsers(page int) []user {
+	var users []user
+	for i := 0; i < 10; i++ {
+		users = append(users, user{
+			"Agent Smith",
+			fmt.Sprintf("void%d@null.org", (page*10)+i),
+			xid.NewWithTime(time.Now()).String(),
+		})
+	}
+	return users
+}

clicktoload/templates.templ

@@ -0,0 +1,52 @@
+package clicktoload
+
+import (
+	"fmt"
+
+	"examples/shared"
+)
+
+templ demo(users []user, page int) {
+	<table class="table"><thead>
+	<tr>
+		<td>Name</td>
+		<td>Email</td>
+		<td>ID</td>
+	</tr>
+</thead><tbody>
+	@tbody(users, page)
+</tbody></table>
+}
+
+templ tbody(users []user, page int) {
+	for _, u := range users {
+		<tr>
+			<td>{ u.name }</td>
+			<td>{ u.email }</td>
+			<td>{ u.id }</td>
+		</tr>
+	}
+	@replaceMe(page)
+}
+
+templ replaceMe(page int) {
+	<tr id="replaceMe">
+		<td colspan="3"><button class="button is-black" hx-get={ "/click-to-load/contacts/?page="+fmt.Sprint(page+1) } hx-target="#replaceMe" hx-swap="outerHTML">Load More Agents...</button></td>
+	</tr>
+}
+
+templ Index(users []user) {
+	@shared.Layout("Click to Load") {
+		<h2 class="title">Click to Load</h2>
+		<p>This example shows how to implement click-to-load the next page in a table of data. The crux of the demo is the final row:</p>
+		<pre><code class="language-html">
+	@shared.Raw() {
+		@replaceMe(1)
+	}
+</code></pre>
+		<p>This row contains a button that will replace the entire row with the next page of results (which will contain a button to load the next page of results). And so on.</p>
+		<h2 class="title">Demo</h2>
+		@demo(users, 1)
+	}
+}
+

clicktoload/templates_templ.go

@@ -0,0 +1,511 @@
+// Code generated by templ@(devel) DO NOT EDIT.
+
+package clicktoload
+
+//lint:file-ignore SA4006 This context is only used if a nested component is present.
+
+import "github.com/a-h/templ"
+import "context"
+import "io"
+import "bytes"
+
+// GoExpression
+import (
+	"fmt"
+
+	"examples/shared"
+)
+
+func demo(users []user, page int) templ.Component {
+	return templ.ComponentFunc(func(ctx context.Context, w io.Writer) (err error) {
+		templBuffer, templIsBuffer := w.(*bytes.Buffer)
+		if !templIsBuffer {
+			templBuffer = templ.GetBuffer()
+			defer templ.ReleaseBuffer(templBuffer)
+		}
+		ctx = templ.InitializeContext(ctx)
+		var_1 := templ.GetChildren(ctx)
+		if var_1 == nil {
+			var_1 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		// Element (standard)
+		_, err = templBuffer.WriteString("<table")
+		if err != nil {
+			return err
+		}
+		// Element Attributes
+		_, err = templBuffer.WriteString(" class=\"table\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(">")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<thead>")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<tr>")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<td>")
+		if err != nil {
+			return err
+		}
+		// Text
+		var_2 := `Name`
+		_, err = templBuffer.WriteString(var_2)
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</td>")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<td>")
+		if err != nil {
+			return err
+		}
+		// Text
+		var_3 := `Email`
+		_, err = templBuffer.WriteString(var_3)
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</td>")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<td>")
+		if err != nil {
+			return err
+		}
+		// Text
+		var_4 := `ID`
+		_, err = templBuffer.WriteString(var_4)
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</td>")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</tr>")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</thead>")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<tbody>")
+		if err != nil {
+			return err
+		}
+		// TemplElement
+		err = tbody(users, page).Render(ctx, templBuffer)
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</tbody>")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</table>")
+		if err != nil {
+			return err
+		}
+		if !templIsBuffer {
+			_, err = io.Copy(w, templBuffer)
+		}
+		return err
+	})
+}
+
+func tbody(users []user, page int) templ.Component {
+	return templ.ComponentFunc(func(ctx context.Context, w io.Writer) (err error) {
+		templBuffer, templIsBuffer := w.(*bytes.Buffer)
+		if !templIsBuffer {
+			templBuffer = templ.GetBuffer()
+			defer templ.ReleaseBuffer(templBuffer)
+		}
+		ctx = templ.InitializeContext(ctx)
+		var_5 := templ.GetChildren(ctx)
+		if var_5 == nil {
+			var_5 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		// For
+		for _, u := range users {
+			// Element (standard)
+			_, err = templBuffer.WriteString("<tr>")
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<td>")
+			if err != nil {
+				return err
+			}
+			// StringExpression
+			var var_6 string = u.name
+			_, err = templBuffer.WriteString(templ.EscapeString(var_6))
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</td>")
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<td>")
+			if err != nil {
+				return err
+			}
+			// StringExpression
+			var var_7 string = u.email
+			_, err = templBuffer.WriteString(templ.EscapeString(var_7))
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</td>")
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<td>")
+			if err != nil {
+				return err
+			}
+			// StringExpression
+			var var_8 string = u.id
+			_, err = templBuffer.WriteString(templ.EscapeString(var_8))
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</td>")
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</tr>")
+			if err != nil {
+				return err
+			}
+		}
+		// TemplElement
+		err = replaceMe(page).Render(ctx, templBuffer)
+		if err != nil {
+			return err
+		}
+		if !templIsBuffer {
+			_, err = io.Copy(w, templBuffer)
+		}
+		return err
+	})
+}
+
+func replaceMe(page int) templ.Component {
+	return templ.ComponentFunc(func(ctx context.Context, w io.Writer) (err error) {
+		templBuffer, templIsBuffer := w.(*bytes.Buffer)
+		if !templIsBuffer {
+			templBuffer = templ.GetBuffer()
+			defer templ.ReleaseBuffer(templBuffer)
+		}
+		ctx = templ.InitializeContext(ctx)
+		var_9 := templ.GetChildren(ctx)
+		if var_9 == nil {
+			var_9 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		// Element (standard)
+		_, err = templBuffer.WriteString("<tr")
+		if err != nil {
+			return err
+		}
+		// Element Attributes
+		_, err = templBuffer.WriteString(" id=\"replaceMe\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(">")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<td")
+		if err != nil {
+			return err
+		}
+		// Element Attributes
+		_, err = templBuffer.WriteString(" colspan=\"3\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(">")
+		if err != nil {
+			return err
+		}
+		// Element (standard)
+		_, err = templBuffer.WriteString("<button")
+		if err != nil {
+			return err
+		}
+		// Element Attributes
+		_, err = templBuffer.WriteString(" class=\"button is-black\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(" hx-get=")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(templ.EscapeString("/click-to-load/contacts/?page="+fmt.Sprint(page+1)))
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(" hx-target=\"#replaceMe\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(" hx-swap=\"outerHTML\"")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString(">")
+		if err != nil {
+			return err
+		}
+		// Text
+		var_10 := `Load More Agents...`
+		_, err = templBuffer.WriteString(var_10)
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</button>")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</td>")
+		if err != nil {
+			return err
+		}
+		_, err = templBuffer.WriteString("</tr>")
+		if err != nil {
+			return err
+		}
+		if !templIsBuffer {
+			_, err = io.Copy(w, templBuffer)
+		}
+		return err
+	})
+}
+
+func Index(users []user) templ.Component {
+	return templ.ComponentFunc(func(ctx context.Context, w io.Writer) (err error) {
+		templBuffer, templIsBuffer := w.(*bytes.Buffer)
+		if !templIsBuffer {
+			templBuffer = templ.GetBuffer()
+			defer templ.ReleaseBuffer(templBuffer)
+		}
+		ctx = templ.InitializeContext(ctx)
+		var_11 := templ.GetChildren(ctx)
+		if var_11 == nil {
+			var_11 = templ.NopComponent
+		}
+		ctx = templ.ClearChildren(ctx)
+		// TemplElement
+		var_12 := templ.ComponentFunc(func(ctx context.Context, w io.Writer) (err error) {
+			templBuffer, templIsBuffer := w.(*bytes.Buffer)
+			if !templIsBuffer {
+				templBuffer = templ.GetBuffer()
+				defer templ.ReleaseBuffer(templBuffer)
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<h2")
+			if err != nil {
+				return err
+			}
+			// Element Attributes
+			_, err = templBuffer.WriteString(" class=\"title\"")
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString(">")
+			if err != nil {
+				return err
+			}
+			// Text
+			var_13 := `Click to Load`
+			_, err = templBuffer.WriteString(var_13)
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</h2>")
+			if err != nil {
+				return err
+			}
+			// Whitespace (normalised)
+			_, err = templBuffer.WriteString(` `)
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<p>")
+			if err != nil {
+				return err
+			}
+			// Text
+			var_14 := `This example shows how to implement click-to-load the next page in a table of data. The crux of the demo is the final row:`
+			_, err = templBuffer.WriteString(var_14)
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</p>")
+			if err != nil {
+				return err
+			}
+			// Whitespace (normalised)
+			_, err = templBuffer.WriteString(` `)
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<pre>")
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<code")
+			if err != nil {
+				return err
+			}
+			// Element Attributes
+			_, err = templBuffer.WriteString(" class=\"language-html\"")
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString(">")
+			if err != nil {
+				return err
+			}
+			// TemplElement
+			var_15 := templ.ComponentFunc(func(ctx context.Context, w io.Writer) (err error) {
+				templBuffer, templIsBuffer := w.(*bytes.Buffer)
+				if !templIsBuffer {
+					templBuffer = templ.GetBuffer()
+					defer templ.ReleaseBuffer(templBuffer)
+				}
+				// TemplElement
+				err = replaceMe(1).Render(ctx, templBuffer)
+				if err != nil {
+					return err
+				}
+				if !templIsBuffer {
+					_, err = io.Copy(w, templBuffer)
+				}
+				return err
+			})
+			err = shared.Raw().Render(templ.WithChildren(ctx, var_15), templBuffer)
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</code>")
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</pre>")
+			if err != nil {
+				return err
+			}
+			// Whitespace (normalised)
+			_, err = templBuffer.WriteString(` `)
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<p>")
+			if err != nil {
+				return err
+			}
+			// Text
+			var_16 := `This row contains a button that will replace the entire row with the next page of results (which will contain a button to load the next page of results). And so on.`
+			_, err = templBuffer.WriteString(var_16)
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</p>")
+			if err != nil {
+				return err
+			}
+			// Whitespace (normalised)
+			_, err = templBuffer.WriteString(` `)
+			if err != nil {
+				return err
+			}
+			// Element (standard)
+			_, err = templBuffer.WriteString("<h2")
+			if err != nil {
+				return err
+			}
+			// Element Attributes
+			_, err = templBuffer.WriteString(" class=\"title\"")
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString(">")
+			if err != nil {
+				return err
+			}
+			// Text
+			var_17 := `Demo`
+			_, err = templBuffer.WriteString(var_17)
+			if err != nil {
+				return err
+			}
+			_, err = templBuffer.WriteString("</h2>")
+			if err != nil {
+				return err
+			}
+			// Whitespace (normalised)
+			_, err = templBuffer.WriteString(` `)
+			if err != nil {
+				return err
+			}
+			// TemplElement
+			err = demo(users, 1).Render(ctx, templBuffer)
+			if err != nil {
+				return err
+			}
+			if !templIsBuffer {
+				_, err = io.Copy(w, templBuffer)
+			}
+			return err
+		})
+		err = shared.Layout("Click to Load").Render(templ.WithChildren(ctx, var_12), templBuffer)
+		if err != nil {
+			return err
+		}
+		if !templIsBuffer {
+			_, err = io.Copy(w, templBuffer)
+		}
+		return err
+	})
+}
+

go.mod

@@ -2,9 +2,10 @@ module examples
 
 go 1.21
 
-require github.com/a-h/templ v0.2.234-0.20230416205859-20293271f3c5
-
 require (
-	github.com/yosssi/gohtml v0.0.0-20201013000340-ee4748c638f4 // indirect
+	github.com/a-h/templ v0.2.234-0.20230416205859-20293271f3c5
-	golang.org/x/net v0.9.0 // indirect
+	github.com/rs/xid v1.5.0
+	github.com/yosssi/gohtml v0.0.0-20201013000340-ee4748c638f4
 )
+
+require golang.org/x/net v0.9.0 // indirect

go.sum

@@ -2,6 +2,8 @@ github.com/a-h/templ v0.2.233 h1:EnZqZmtV0YICqWG6MtLNmTcWuFkl2ImyQ63SIpWaM2Y=
 github.com/a-h/templ v0.2.233/go.mod h1:h1DdzFMWVApvTcZBNmM6+mD6EPq6uYkncMNF7zdLj9I=
 github.com/a-h/templ v0.2.234-0.20230416205859-20293271f3c5 h1:NeF/iw7KU9W7CYYJimd5x7ooOXCLrfo8FcHdFPUU+2w=
 github.com/a-h/templ v0.2.234-0.20230416205859-20293271f3c5/go.mod h1:nqma2qb9ViAJOP4MBucyH+SPbOyNDZaRQyusfpK4PjY=
+github.com/rs/xid v1.5.0 h1:mKX4bl4iPYJtEIxp6CYiUuLQ/8DYMoz0PUdtGgMFRVc=
+github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
 github.com/yosssi/gohtml v0.0.0-20201013000340-ee4748c638f4 h1:0sw0nJM544SpsihWx1bkXdYLQDlzRflMgFJQ4Yih9ts=
 github.com/yosssi/gohtml v0.0.0-20201013000340-ee4748c638f4/go.mod h1:+ccdNT0xMY1dtc5XBxumbYfOUhmduiGudqaDgD2rVRE=
 golang.org/x/net v0.9.0 h1:aWJ/m6xSmxWBx+V0XRHTlrYrPG56jKsLdTFmsSsCzOM=

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"examples/bulkupdate"
 	"examples/clicktoedit"
+	"examples/clicktoload"
 	"log"
 	"net/http"
 
@@ -44,4 +45,10 @@ var examples = []Example{
 		Slug:     "bulk-update",
 		Handlers: bulkupdate.Handlers,
 	},
+	{
+		Name:     "Click to Load",
+		Desc:     "Demonstrates clicking to load more rows in a table",
+		Slug:     "click-to-load",
+		Handlers: clicktoload.Handlers,
+	},
 }