"compact()：未定义变量：运算符"

Question

I'm getting the following error

  (1/1) ErrorException
  compact(): Undefined variable: operator

This is my line of code

$postsCat = Post::whereHas('Cat', function($query) use ($sreachWord) {
    return $query->whereRaw('name REGEXP"'.sql_text_to_regx($sreachWord).'"');
})->orderBy('top','desc')
->orderBy('updated_at','desc')
->paginate(30);

Why is this happening? Is it because of my PHP version (7.3) or something else?

Answer 1

Go to your project in

vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php

On line number 1337, you can found below code inside the addWhereExistsQuery method

$this->wheres[] = compact('type', 'operator', 'query', 'boolean');

You just remove the 'operator' parameter.

And I hope it will work fine.

Answer 2

Please refer to this https://github.com/laravel/framework/issues/26936

The version of Laravel would need to be updated.

Answer 3

Instead of passing the variable to the compact() method, you'll passe it the name of the variable as a string without the dollar symbol.

$postsCats = Post::all(); // example

return view('posts.index', compact('postsCats'));

Answer 4

There are 2 fixes for this issue

1. Downgrade your php to 7.2
2. run "composer update" as in latest Laravel this issue has been resolved.

Answer 5

如果您无法升级您的 Laravel，您只需将您的查询更改为 RAW 查询，它对我有用。

Answer 6

  $posts = Post::latest()->get();
            return view('author.post.index', compact('posts'));

Answer 7

Latest PHP version doesn't allow use of undefined variables. Instead of removing the latest version, another option is to switch between versions. Install earlier version say PHP7.2<\/strong> as outlined here.<\/a> Then set this as the preferred version by running sudo update-alternatives --set php \/usr\/bin\/php7.2<\/code> on your Ubuntu terminal. Then run composer update<\/code>

"