Suitecrm: When deleting attachments of custom type "File", empty records appear in Listview

[ana-samoila]

I have created a File upload field using this tutorial:
http://www.bhea.com/blog/creating-file-upload-field-core-modulecustom-module-sugar-7-x/
I have reproduced steps 1,2, and 3 in the tutorial.

1. I created "custom/Extension/modules/{YOUR_MODULE}/Ext/Vardefs/sugarfield_{your_field_name}.php"
2. I created "custom/Extension/modules/{YOUR_MODULE}/Ext/Language/{your_field_name}.en_us.lang.php"
3. I performed Admin > Repair > Quick Repair and Rebuild
4. I added the new field to Admin> Studio > {MY_MODULE} > Layouts > Editview

Now I have a functional File Upload button in Editview.

Issue

When I go to Editview and i remove the file, the file is unlinked from the entity. But an empty record is displayed in Listview.
It is a bug because the database gets filled with empty records.

Expected Behavior

Empty lines should not appear in Listview. The uploaded File should be simply removed and deleted from the database.

Actual Behavior

Each time I delete a file uploaded in the File field, an empty record appears.

Steps to Reproduce

1. Reproduce the first 3 steps from this tutorial http://www.bhea.com/blog/creating-file-upload-field-core-modulecustom-module-sugar-7-x/
2. Go to Admin > Studio > {YOUR_MODULE} > Layouts > EditView and place the new field in the Edit view panel (for me, the remove button only worked once I placed the File field next to Image upload fields in editview!)

Your Environment

SuiteCRM 7.8.1

[ana-samoila]

I found the solution, I want to share it with you:

I also proceeded to the next steps in the tutorial to remove the uploaded file.
http://www.bhea.com/blog/creating-file-upload-field-core-modulecustom-module-sugar-7-x/

1. I modified the file custom/Extension/application/Ext/Include/{YOUR_MODULE}.php
2. and the file custom/modules/{YOUR_MODULE}/{YOUR_MODULE}.php

At step 2, instead of the code for the deleteAttachment method provided by the tutorial, i added the following code:

public function deleteAttachment($isDuplicate = 'false')
{
    if ($this->ACLAccess('edit')) {
        if ($isDuplicate === 'true') {
            return true;
        }
        $removeFile = "upload://{$this->id}";
    }
    if (file_exists($removeFile)) {
        if (!unlink($removeFile)) {
            $GLOBALS['log']->error("*** Could not unlink() file: [ {$removeFile} ]");
        } else {
            $this->uploadfile = '';
            $this->filename = '';
            $this->file_mime_type = '';
            $this->file_ext = '';
            $this->save();

            return true;
        }
    } else {
        $this->uploadfile = '';
        $this->filename = '';
        $this->file_mime_type = '';
        $this->file_ext = '';
        $this->save();

        return true;
    }

    return false;
}

Now everything works fine!