diff --git a/category/category.go b/category/category.go
index f60dc4b..bc427b1 100644
--- a/category/category.go
+++ b/category/category.go
@@ -1,30 +1,51 @@
 // Package category supports post categories
 package category
 
 import (
 	"errors"
 	"github.com/writeas/slug"
 )
 
 var (
 	ErrNotFound = errors.New("category doesn't exist")
 )
 
 // Category represents a post tag with additional metadata, like a title and slug.
 type Category struct {
 	ID      int64  `json:"-"`
 	Hashtag string `json:"hashtag"`
 	Slug    string `json:"slug"`
 	Title   string `json:"title"`
 }
 
 // NewCategory creates a Category you can insert into the database, based on a hashtag. It automatically breaks up the
 // hashtag by words, based on capitalization, for both the title and a URL-friendly slug.
 func NewCategory(hashtag string) *Category {
 	title := titleFromHashtag(hashtag)
 	return &Category{
 		Hashtag: hashtag,
 		Slug:    slug.Make(title),
 		Title:   title,
 	}
 }
+
+// NewCategoryFromPartial creates a Category from a partially-populated Category, such as when a user initially creates
+// one.
+func NewCategoryFromPartial(cat *Category) *Category {
+	newCat := &Category{
+		Hashtag: cat.Hashtag,
+	}
+	// Create title from hashtag, if none supplied
+	if cat.Title == "" {
+		newCat.Title = titleFromHashtag(cat.Hashtag)
+	} else {
+		newCat.Title = cat.Title
+	}
+	// Create slug from title, if none supplied; otherwise ensure slug is valid
+	if cat.Slug == "" {
+		newCat.Slug = slug.Make(newCat.Title)
+	} else {
+		newCat.Slug = slug.Make(cat.Slug)
+	}
+	return newCat
+}