[development] D7 File API

Peter Anderson list at panda.id.au
Mon May 2 06:14:59 UTC 2011

Hi Randy,

I had a look at the File API handbook you linked to, and I guess 
file_usage_add() is what I need, however I tried implementing it and no 
new records are showing in the {file_usage} table...
Here's the code: file_usage_add($uploaded_file, 'block_icons', 'block', 
(I got $bid from the {block} table)

My module allows users to upload an image to each block on the site, so 
I created my own database table where each block that has an image 
associated with it is listed.
If I don't need to store the path to the images anymore, I'm assuming 
file_usage_add() does that for me somehow...?

On 02/05/11 13:13, Randy Fay wrote:
> I'm a bit baffled why you'd consider accessing the database directly - 
> you should be using the file API.
> File API handbook section is at http://drupal.org/node/555118
> You should use the File API to create managed or unmanaged file 
> entries, and not worry more about how they are stored in the db.
> A module that might help you is 
> http://drupal.org/project/filefield_sources. In fact, it might already 
> do everything you need. Anyway, it allows you to add a file from any 
> source.
> It *is* complicated trying to allow access to a file that is not in 
> your public or private files section. The idea of having drupal:// 
> didn't get in.
> -Randy
> On Sun, May 1, 2011 at 8:21 PM, Peter Anderson <list at panda.id.au 
> <mailto:list at panda.id.au>> wrote:
>     Hi everyone,
>     I'm upgrading my D6 module to D7 and am trying to work out the
>     best way to implement the new File API...
>     My module allows users to either upload a file from their
>     computer, or enter the relative path of a file already on the
>     server (e.g. /sites/default/themes/...). The relative path to this
>     file is then stored in the DB.
>     I'm not sure what to store in the database in the D7 version: the
>     file URI (public://my_file.png) or the relative path as per the D6
>     version (/sites/default/files/my_file.png).
>     The reasons I'm not sure are as follows:
>     - Storing the File URI seems to be the obvious choice as that
>     seems to be the default now
>     - But how would I allow users to enter the path of a file already
>     on the server in, say, their theme folder?
>     - Storing the relative path is how I used to do it, so is easier
>     - But then how do I change a relative path to a File URI when
>     required (e.g. by the image_style_url() function)?
>     Any assistance or advice would be much appreciated!
>     -- 
>     Kind regards,
>     Peter Anderson.
>     http://panda.id.au
> -- 
> Randy Fay
> Drupal Module and Site Development
> randy at randyfay.com <mailto:randy at randyfay.com>
> +1  970.462.7450

Kind regards,
Peter Anderson.

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