> For the complete documentation index, see [llms.txt](https://waad-mawlood.gitbook.io/model-metadata/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://waad-mawlood.gitbook.io/model-metadata/basics/markdown/has-metadata.md).

# Has Metadata

## 🔥 `hasMetadata`

* Check if a record of the relationship exists.
* regardless of whether the metadata content is empty or not.

```php
// Syntax
$model->hasMetadata(): bool
```

***

## 🔥 `hasFilledMetadata`

* Check if a record of the relationship exists.
*  Check metadata column contains data that is not empty

```php
// Syntax
$model->hasFilledMetadata(): bool
```

***

## 🔥 `hasKeyMetadata`

* Check if the metadata contains a specific key.
* regardless of whether the key content is empty.

```php
// Syntax
$model->hasKeyMetadata(string|int|null $key): bool
```

***

## 🔥 `hasAllKeysMetadata`

* Check if the metadata contains all specified keys.
* regardless of whether all keys content is empty.

```php
// Syntax
// @param $keys array|Collection|string|int|null
$model->hasAllKeysMetadata($keys): bool
```

***

## 🔥 `hasAnyKeysMetadata`

* Check if metadata contains any of the specified keys.
* regardless of whether all keys content is empty.

```php
// Syntax
// @param $keys array|Collection|string|int|null
$model->hasAnyKeysMetadata($keys): bool
```

***

## 🐞 Examples

```php

// ++++++++++++++++++ hasMetadata ++++++++++++++++++
$model->hasMetadata();
/** Returns true if metadata record exists, false otherwise */


// ++++++++++++++++++ hasFilledMetadata ++++++++++++++++++
$model->hasFilledMetadata();
/** 
* Returns true if metadata exists and is not empty
* Returns false if:
*  - No metadata record exists
*  - Metadata exists but is null
*  - Metadata exists but is an empty array/collection
*/


// ++++++++++++++++++ hasKeyMetadata ++++++++++++++++++
$model->hasKeyMetadata('name');
$model->hasKeyMetadata(7);
$model->hasKeyMetadata(null); // returns false
/** Returns true if the key exists in metadata */


// ++++++++++++++++++ hasAllKeysMetadata ++++++++++++++++++
$model->hasAllKeysMetadata(['name', 'age']); // true if BOTH keys exist
$model->hasAllKeysMetadata(collect(['name', 'age'])); // accepts Collection
$model->hasAllKeysMetadata('name'); // true if 'name' exists
$model->hasAllKeysMetadata(8); // check list array
$model->hasAllKeysMetadata([5, 6]);
$model->hasAllKeysMetadata(null); // returns false


// ++++++++++++++++++ hasAnyKeysMetadata ++++++++++++++++++
$model->hasAnyKeysMetadata(['name', 'age']); // true if Any keys exist
$model->hasAnyKeysMetadata(collect(['name', 'age'])); // accepts Collection
$model->hasAnyKeysMetadata('name'); // true if 'name' exists
$model->hasAnyKeysMetadata(8); // check list array
$model->hasAnyKeysMetadata([5, 6]);
$model->hasAnyKeysMetadata(null); // returns false

```

***

## 📚 Summary

* `hasAllKeysMetadata()` - Returns true only if ALL specified keys exist
* `hasKeyMetadata()` - Convenience method for checking a single key, internally uses `hasAllKeysMetadata()`
* `hasAnyKeysMetadata()` - Returns true if ANY of the specified keys exist