1 files changed, 46 insertions, 4 deletions
diff --git a/system/item/file.go b/system/item/upload.go
index 3b33b04..9253fcc 100644
--- a/system/item/file.go
+++ b/system/item/upload.go
@@ -23,20 +23,32 @@ func (f *FileUpload) String() string { return f.Name }
 func (f *FileUpload) MarshalEditor() ([]byte, error) {
 	view, err := editor.Form(f,
 		editor.Field{
-			View: []byte(`
+			View: func() []byte {
+				if f.Path == "" {
+					return nil
+				}
+
+				return []byte(`
             <div class="input-field col s12">
-                <label class="active">{{ .Name }}</label>
+                <label class="active">` + f.Name + `</label>
                 <!-- Add your custom editor field view here. -->
 				<h4>` + f.Name + `</h4>
 
 				<img class="preview" src="` + f.Path + `"/>
 				<p>File information:</p>
 				<ul>
-					<li>Content-Length: ` + fmt.Sprintf("%d", f.ContentLength) + `</li>
+					<li>Content-Length: ` + fmt.Sprintf("%s", FmtBytes(float64(f.ContentLength))) + `</li>
 					<li>Content-Type: ` + f.ContentType + `</li>
 				</ul>
             </div>
-            `),
+            `)
+			}(),
+		},
+		editor.Field{
+			View: editor.File("Path", f, map[string]string{
+				"label":       "File Upload",
+				"placeholder": "Upload the file here",
+			}),
 		},
 	)
 	if err != nil {
@@ -94,3 +106,33 @@ func (f *FileUpload) Push() []string {
 		"path",
 	}
 }
+
+// FmtBytes converts the numeric byte size value to the appropriate magnitude
+// size in KB, MB, GB, TB, PB, or EB.
+func FmtBytes(size float64) string {
+	unit := float64(1024)
+	BYTE := unit
+	KBYTE := BYTE * unit
+	MBYTE := KBYTE * unit
+	GBYTE := MBYTE * unit
+	TBYTE := GBYTE * unit
+	PBYTE := TBYTE * unit
+
+	switch {
+	case size < BYTE:
+		return fmt.Sprintf("%0.f B", size)
+	case size < KBYTE:
+		return fmt.Sprintf("%.1f KB", size/BYTE)
+	case size < MBYTE:
+		return fmt.Sprintf("%.1f MB", size/KBYTE)
+	case size < GBYTE:
+		return fmt.Sprintf("%.1f GB", size/MBYTE)
+	case size < TBYTE:
+		return fmt.Sprintf("%.1f TB", size/GBYTE)
+	case size < PBYTE:
+		return fmt.Sprintf("%.1f PB", size/TBYTE)
+	default:
+		return fmt.Sprintf("%0.f B", size)
+	}
+
+}