Drupal 8 Module Development - Second Edition

Helpful functions for dealing with managed files

Apart from the staple file_save_data() function, we have a few other ones that can come in handy if we are dealing with managed files. Here's a few of them.

If we want to copy a file from one place to another while making sure a new database record is created, we can use file_copy(). It takes three parameters:

• The FileInterface entity that needs to be copied
• The destination URI where it should go
• The flag indicating what to do in case a file with the same name exists

The parameters are the same as for file_save_data().

Apart from the actual copying, this function also invokes hook_file_copy() which allows modules to respond to files being copied.

Very similar to file_copy(), we also have ...