add nova

nova/src/Fields/ResourceRelationshipGuesser.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Laravel\Nova\Fields;
+
+use Illuminate\Foundation\Application;
+use Illuminate\Support\Str;
+
+class ResourceRelationshipGuesser
+{
+    /**
+     * Guess the relationship name from the displayable name or attribute.
+     *
+     * @param  string  $name
+     * @return string
+     */
+    public static function guessRelation($name)
+    {
+        return Str::camel(str_replace(' ', '_', $name));
+    }
+
+    /**
+     * Guess the resource class name from the displayable name.
+     *
+     * @param  string  $name
+     * @return class-string<\Laravel\Nova\Resource>
+     */
+    public static function guessResource($name)
+    {
+        $singular = Str::studly(Str::singular($name));
+
+        if (class_exists($appResource = Application::getInstance()->getNamespace().'Nova\\'.$singular)) {
+            return $appResource;
+        }
+
+        $results = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 4);
+
+        return str_replace(
+            class_basename($results[3]['class']),
+            $singular,
+            $results[3]['class']
+        );
+    }
+}