1 files changed, 57 insertions, 0 deletions
diff --git a/content/reference.go b/content/reference.go
new file mode 100644
index 0000000..0853b3d
--- /dev/null
+++ b/content/reference.go
@@ -0,0 +1,57 @@
+package content
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+
+	"github.com/bosssauce/ponzu/management/editor"
+	"github.com/bosssauce/ponzu/system/api"
+)
+
+// Referenceable enures there is a way to reference the implenting type from
+// within another type's editor and from type-scoped API calls
+type Referenceable interface {
+	Referenced() []byte
+}
+
+// Select returns the []byte of a <select> HTML element plus internal <options> with a label.
+// IMPORTANT:
+// The `fieldName` argument will cause a panic if it is not exactly the string
+// form of the struct field that this editor input is representing
+func Select(fieldName string, p interface{}, attrs map[string]string, contentType string) []byte {
+	ct, ok := Types[contentType]
+	if !ok {
+		log.Println("Cannot reference an invalid content type:", contentType)
+		return nil
+	}
+
+	// get a handle to the underlying interface type for decoding
+	t := ct()
+
+	// decode all content type from db into options map
+	// map["?type=<contentType>&id=<id>"]t.String()
+	options := make(map[string]string)
+	// jj := db.ContentAll(contentType + "__sorted") // make this an API call
+	jj := api.ContentAll(contentType)
+
+	for i := range jj {
+		err := json.Unmarshal(jj[i], t)
+		if err != nil {
+			log.Println("Error decoding into reference handle:", contentType, err)
+		}
+
+		// make sure it is an Identifiable
+		item, ok := t.(Identifiable)
+		if !ok {
+			log.Println("Cannot use type", contentType, "as a reference since it does not implement Identifiable")
+			return nil
+		}
+
+		k := fmt.Sprintf("?type=%s&id=%d", contentType, item.ItemID())
+		v := item.String()
+		options[k] = v
+	}
+
+	return editor.Select(fieldName, p, attrs, options)
+}