问题
I am working with a hook_form_alter on a CCK type (for you drupal-ers). I have a field that is normally a select list in my node form. However, in this instance, I want to hide the select list, and populate its value in the form with an SQL query.
Everything was going nicely. I could see that my desired value was showing up in the HTML source, so I knew my query was executing properly. However, when I submit the form, it only inserts the first character of the value. A few of my tests were values of 566, 784, 1004 - the column values were 5,7,1, respectively.
At first I thought it had to be the DB column attributes, but when I removed my form_alter that makes the field hidden and select the value manually, the correct value is inserted?!?
<?php
function addSR_form_service_request_node_form_alter(&$form, $form_state) {
if (arg(0) == 'user' && is_numeric(arg(1))) {
$account = arg(1);
$club = 2589;
$form['field_sr_account'] = array( '#type' => 'hidden',
'#value' => $club
);
}
}
?>
Can anyone see why only the first character would be inserted??
Note: I have tried deleting and recreating the column, using #value & #default_value, and it is still submitting only the first character of the integer. Also, I eliminated the submit handler as a possible cause by removing it, which still resulted in only one character being submitted
More Updates - Still Searching! Okay, some good questions. Allow me to answer them:
- The DB column type is integer(4)
The HTML the hook produces is :
input type="hidden" name="field_sr_account" id="edit-field-sr-account" value="2589"
Latest Update: I think the issue has been narrowed to the structure of the array. When I do var_dump on this field after the form alter has been processed, this is what I get..
[43] => Array
(
[#type] => hidden
[#default_value] => 2589
[#post] => Array
(
)
[#programmed] =>
[#tree] =>
[#parents] => Array
(
[0] => field_sr_account
)
[#array_parents] => Array
(
[0] => field_sr_account
)
[#weight] => 0.016
[#processed] => 1
[#description] =>
[#attributes] => Array
(
)
[#required] =>
[#input] => 1
[#process] => Array
(
[0] => form_expand_ahah
)
[#name] => field_sr_account
[#id] => edit-field-sr-account
[#value] => 2589
[#defaults_loaded] => 1
[#sorted] => 1
)
What is the structure of the field that I can set the form value to. It's gotta be something like what abhaga is suggesting..
回答1:
Since the field you are trying to change was originally using a select widget, CCK will be looking for $form_state['values']['field_sr_account'][0]['value']. By setting the field to a #hidden type and setting #value, you will get its value in $form_state['values']['field_sr_account']. CCK will try to access the first element of that and end up with the first character of the value.
Updated: The easiest way to achieve what you need would be to do something:
function addSR_form_service_request_node_form_alter(&$form, $form_state) {
if (arg(0) == 'user' && is_numeric(arg(1))) {
$account = arg(1);
$club = 2589;
// Use this property to store the value to restore back
$form['#field_sr_account'] = $club;
$form['field_sr_account'] = array( '#type' => 'hidden','#value' => $club);
}
}
/*in your submit handler, restore the value in the proper format*/
$form_state['values']['field_sr_account'] = array('0' => array('value' => $form['#field_sr_account']));
Old Answer
One way of accomplishing what you are trying to do is to copy the whole
$form['field_sr_account']into$form['#field_sr_account']and then provide the value through the SQL query in the right format in the submit handler itself.
回答2:
Ok take a look at http://api.drupal.org/api/drupal/developer--topics--forms_api_reference.html#hidden versus http://api.drupal.org/api/drupal/developer--topics--forms_api_reference.html#value
It is also recommended you use value instead of hidden. You can find this info on http://api.drupal.org/api/drupal/developer--topics--forms_api.html/6
Also, type hidden is not allowed to have properties your assigning to it so this may be causing a problem. Any usage problems you may be having with the forms API should be answer in those resources as I"m still a little unclear on what you're trying to accomplish... specifically with the submit button.
Old answer:
Ok if I understand this correctly $club is not being set correctly. If the first result from your query is the number your looking for then this should work.
Try calling
<?php print_r(db_fetch_array($result)) ?>to get a look at everything returned from the query.
I'm a little unclear as to what is being set incorrectly. If it's
#valueinside your associated array then the culprit must be the query. If#valueis being set correctly and whatever your doing with it later may be the culprit (not shown here). If its the values in your$form_stateI don't see that your using$clubhere at all.Also, in your
addSR_submit_functionyou don't seem to be using the$formvariable, or using $club for anything except for setting the message which appears at the top of the page your on when it's called.I may need some further clarification as to what exactly is going wrong.
Also, when you're calling
drupal_set_messagefunction, are you just doing this for debugging purposes?
回答3:
Shouldn't you check
drupal_set_message($form_state['values']['field_sr_account']);
instead of
drupal_set_message($club);
in addSR_submit_function ?
OK, just a quess: not sure what type db_result returns for your query, may be it has something to do with types conversions? So this is to make sure value is int.
'#value' => (int)$club
回答4:
cinqoTimo, Out of curiosity what kind of CCK field is this? Is it a Integer, Decimal, Float? and do you have any special parameters on that field not normally on by default? What is the column type in the db?
Can you post the html output of the form. That might give a clue as to what might be going on.
Are you using any javascript to edit any values for this field?
Have you tried outputting the value results from addSR_form_service_request_node_submit hook? Any difference there.
Sorry for all the questions. Just thinking out loud as it seems you have covered most of your bases.
来源：https://stackoverflow.com/questions/2035097/drupal-6-only-inserting-first-character-of-value-to-mysql