[11.x] Support Optional Dimensions for vector Column Type (#53316)

* Allow `vector` column dimensions to be unspecified

* Update Blueprint.php

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: akr4m

src/Illuminate/Database/Schema/Blueprint.php

@@ -1456,12 +1456,14 @@ public function computed($column, $expression)
      * Create a new vector column on the table.
      *
      * @param  string  $column
-     * @param  int  $dimensions
+     * @param  int|null  $dimensions
      * @return \Illuminate\Database\Schema\ColumnDefinition
      */
-    public function vector($column, $dimensions)
+    public function vector($column, $dimensions = null)
     {
-        return $this->addColumn('vector', $column, compact('dimensions'));
+        $options = $dimensions ? compact('dimensions') : [];
+
+        return $this->addColumn('vector', $column, $options);
     }
 
     /**

src/Illuminate/Database/Schema/Grammars/MySqlGrammar.php

@@ -1128,7 +1128,9 @@ protected function typeComputed(Fluent $column)
      */
     protected function typeVector(Fluent $column)
     {
-        return "vector($column->dimensions)";
+        return isset($column->dimensions) && $column->dimensions !== ''
+            ? "vector({$column->dimensions})"
+            : 'vector';
     }
 
     /**

src/Illuminate/Database/Schema/Grammars/PostgresGrammar.php

@@ -1078,7 +1078,9 @@ protected function typeGeography(Fluent $column)
      */
     protected function typeVector(Fluent $column)
     {
-        return "vector($column->dimensions)";
+        return isset($column->dimensions) && $column->dimensions !== ''
+            ? "vector({$column->dimensions})"
+            : 'vector';
     }
 
     /**