Add the ability to edit groups

backend/groups.go

@@ -7,7 +7,7 @@ import (
 type Group struct {
 	ID    uint64 `gorm:"primaryKey"`
 	Name  string `gorm:"unique,notNull"`
-	Links []Link
+	Links []Link `gorm:"constraint:OnDelete:CASCADE;"`
 }
 
 func GetGroups(db *gorm.DB) ([]Group, error) {
@@ -30,3 +30,24 @@ func CreateGroup(db *gorm.DB, groupName string) (Group, error) {
 
 	return group, nil
 }
+
+func UpdateGroup(db *gorm.DB, id uint64, groupName string) (Group, error) {
+	var group Group
+	db.First(&group, id)
+
+	group.Name = groupName
+	result := db.Save(&group)
+	if result.Error != nil {
+		return Group{}, result.Error
+	}
+
+	return group, nil
+}
+
+func DeleteGroup(db *gorm.DB, id uint64) error {
+	result := db.Delete(&Group{}, id)
+	if result.Error != nil {
+		return result.Error
+	}
+	return nil
+}

main.go

@@ -40,6 +40,18 @@ func main() {
 		views.CreateGroup(c, db)
 	})
 
+	// Update group
+	// HTML forms cannot be submitted using PUT or PATCH methods without javascript.
+	r.POST("/groups/:id/put", func(c *gin.Context) {
+		views.UpdateGroup(c, db)
+	})
+
+	// Delete group
+	// HTML forms cannot be submitted using the DELETE method without javascript.
+	r.POST("/groups/:id/delete", func(c *gin.Context) {
+		views.DeleteGroup(c, db)
+	})
+
 	// Create new link
 	r.POST("/links", func(c *gin.Context) {
 		views.CreateLink(c, db)

templates/settings.html.tmpl

@@ -10,17 +10,24 @@
 
         {{range .groups}}
         <h2>Group "{{.Name}}"</h2>
-        <form class="row">
-            <input
-                value="{{.Name}}"
-                placeholder="Name"
-                name="groupName"
-                required
-            />
-            <button type="submit">
-                <img src="/assets/svg/floppy-disk-solid.svg" width="16px" height="16px" />
-            </button>
-        </form>
+        <div class="row">
+            <form method="POST" action="/groups/{{.ID}}/put" class="innerForm">
+                <input
+                    value="{{.Name}}"
+                    placeholder="Name"
+                    name="groupName"
+                    required
+                />
+                <button type="submit">
+                    <img src="/assets/svg/floppy-disk-solid.svg" width="16px" height="16px" />
+                </button>
+            </form>
+            <form method="POST" action="/groups/{{.ID}}/delete">
+                <button type="submit">
+                    <img src="/assets/svg/trash-solid.svg" width="16px" height="16px" />
+                </button>
+            </form>
+        </div>
 
         {{range .Links}}
         <div class="row">

views/groups.go

@@ -5,6 +5,7 @@ import (
 	"github.com/ordinary-dev/phoenix/backend"
 	"gorm.io/gorm"
 	"net/http"
+	"strconv"
 )
 
 func CreateGroup(c *gin.Context, db *gorm.DB) {
@@ -22,3 +23,43 @@ func CreateGroup(c *gin.Context, db *gorm.DB) {
 	// This page is called from the settings, return the user back.
 	c.Redirect(http.StatusFound, "/settings")
 }
+
+func UpdateGroup(c *gin.Context, db *gorm.DB) {
+	if err := RequireAuth(c, db); err != nil {
+		return
+	}
+
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		ShowError(c, err)
+		return
+	}
+	groupName := c.PostForm("groupName")
+	if _, err := backend.UpdateGroup(db, id, groupName); err != nil {
+		ShowError(c, err)
+		return
+	}
+
+	// This page is called from the settings, return the user back.
+	c.Redirect(http.StatusFound, "/settings")
+}
+
+func DeleteGroup(c *gin.Context, db *gorm.DB) {
+	if err := RequireAuth(c, db); err != nil {
+		return
+	}
+
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		ShowError(c, err)
+		return
+	}
+
+	if err = backend.DeleteGroup(db, id); err != nil {
+		ShowError(c, err)
+		return
+	}
+
+	// Redirect to settings.
+	c.Redirect(http.StatusFound, "/settings")
+}