By danielb on

Hi guys, as you may know the multiple values option in CCK for drupal 6 creates an 'add another item' button which uses AHAH to add another field.

I've managed to use form_alter to add a little select box next to it, hoping I could use the value of this select box to somehow affect the new field that shows up (that part I haven't figured out yet) but right now my problem is that the button has stopped working, it's giving me a js alert with "An error occurred." followed by the path of my AHAH callback with the arguments. The error is from Drupal.AhahError or something like that in misc/Drupal.js. Obviously it's because of the new form element, so what can I do to be able to have the form submit normally, but also so I can capture the value of the select?

⋅ Categories: Drupal 6.x

Comments

somes’s picture

somes commented

Have you tried stripping out every thing and just return a '

Hello World

'

looking at the poll module could help but there's a lot in there

At the moment I have manage to add extra fields but I cant get easy access to there values - you need to start looking at the form state (once you resolve the js issue)

sorry I cant be more help Im trying to get past my bottle neck also

danielb’s picture

danielb commented

I had to create my own version of content_add_more_js complete with a new menu callback for my forms to use (which I had to switch out with form_alter). My functions makes the necessary changes to the variables and then calls the default add_more_js function to finish it off.

module_load_include('inc', 'content', 'includes/content.node_form');
content_add_more_js($type_name_url, $field_name);

Now, to figure out how to capture the value.

danielb’s picture

danielb commented

OK here's a small part of my "form state" i get in hook_form_alter after hitting the 'add another item' ahah button.
This part of the code represents the submitted data from the first 'multiple value' row, I should be able to alter it here before it's rendered on the page by javascript.

            [0] => Array
                (
                    [#type] => mymodule_autocomplete
                    [#default_value] => Array
                        (
                            [aid] => Array
                                (
                                    [aid] => one
                                )

                        )

                    [#value_callback] => mymodule_autocomplete_value
                    [_weight] => Array
                        (
                            [#type] => weight
                            [#default_value] => 0
                            [#weight] => 100
                        )

                    [#field_name] => field_mymodule
                    [#title] => 
                    [#description] => 
                    [#required] => 
                    [#weight] => 0
                    [#delta] => 0
                    [#columns] => Array
                        (
                            [0] => aid
                            [1] => type
                        )

                )

Note: I have 2 columns set up "aid" and "type" for this field. I don't really know how to actually get two values into this field.
I need to manipulate this array to slip the 'type' value in (at this point in the code I know what 'type' is)
Something like this?


                    [#default_value] => Array
                        (
                            [aid] => Array
                                (
                                    [aid] => one
                                )
                            [type] => Array
                                (
                                    [type] => type_val
                                )
                        )

(p.s., 'one' is the string I typed into the first input field)