Check Query Result Availability

$feedbackStatus = DB::table('responder_feedback_status')
    ->where([
        'project_id' => $responder->project_id,
        'participant_id' => $responder->participant_id,
        'responder_id' => $responder->id,
    ])
    ->first();

if ($feedbackStatus) {
    // Record exists, handle the result
    // For example:
    echo "Feedback status found: " . json_encode($feedbackStatus);
} else {
    // No record found
    echo "No feedback status found.";
}

### Explanation:
– The `first()` method retrieves the first record that matches the query conditions or returns `null` if no record is found.
– Use an `if` statement to check whether `$feedbackStatus` is `null` or not.
– If `$feedbackStatus` is not `null`, it means a record exists, and you can access its properties (e.g., `$feedbackStatus->status`).

Let me know if you need further clarification!

### Example Code:
Assume you have a model named `FeedbackStatus`.

#### 1. Using Eloquent Model:

use AppModelsFeedbackStatus;

$id = 1; // The ID of the record to update
$data = [
    'status' => 'completed',
    'updated_at' => now(),
];

// Find the record by ID
$feedbackStatus = FeedbackStatus::find($id);

if ($feedbackStatus) {
    // Update the model attributes
    $feedbackStatus->update($data);
    echo "Record updated successfully!";
} else {
    echo "Record not found.";
}

### Explanation:
1. **Find the Record**:
– `FeedbackStatus::find($id)` fetches the record with the given ID.
– If the record is not found, it returns `null`.

2. **Update the Record**:
– The `update()` method accepts an associative array of attributes and updates them in the database.

—

#### 2. Using `findOrFail` for Error Handling:

try {
    $feedbackStatus = FeedbackStatus::findOrFail($id);
    $feedbackStatus->update($data);
    echo "Record updated successfully!";
} catch (IlluminateDatabaseEloquentModelNotFoundException $e) {
    echo "Record not found.";
}

This approach throws an exception if the record does not exist, allowing you to handle errors gracefully.

—

#### 3. Without Retrieving the Model:
If you don't need to retrieve the record first, you can directly use the `update` query:

FeedbackStatus::where('id', $id)->update($data);

This is more efficient when you just need to update the record without using the model instance.

—

Let me know if you need further assistance!