how to make a custom field must to start from 8 and 9

[henro]

 hi all,

is it possible , to set custom field must to start 8 and 9

the case is the field will gather contact number

thanks in advance

[Erik Hommel]

I have no idea what you are asking 

is it possible , to set custom field must to start 8 and 9

Do you mean there has to be a default start value for a custom field?

[joanne]

Do you mean that any contact number that is entered will be either 9XXXX... or 8XXXX...?

Do you want an error message to be shown if someone enters say 7654... in the custom field?

[henro]

Thanks a lot Joane and Erick Hommel
 You are right

i mean like that,

exactly like you mean , Joanne

is it possible in civicrm ?

thanks for help

[totten]

I believe that this sort of customization usually requires some programming.

The general formula is (1) figure out which screens need the custom behavior, (2) write some Javascript to implement the behavior, and (3) inject the Javascript code on each screen. There's some examples on this topic:

http://www.jackrabbithanna.com/articles/easy-jquery-modificaiton-civicrm-forms
https://civicrm.org/blogs/dave-greenberg/now-its-easier-add-custom-behaviors-templates
http://forum.civicrm.org/index.php/topic,32968.msg140501.html#msg140501

[henro]

Thanks a lot Totten
learning it 

[henro]

it is too difficult to learn by me in quick time

[Michael McAndrew]

There's also http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_validateForm which I suspect might come in handy (for others that stumble across this post).

[henro]

Thanks a lot Michael , very helpfull ,
but just litle more ,

for addres code ( highlights ) , how do i determines that , because for my case is the field on custom data.

function MYMODULE_civicrm_validateForm( $formName, &$fields, &$files, &$form, &$errors ) {
  if ($formName == 'CRM_Contact_Form_Contact') {
    foreach ($fields['address'] as $key => $address) {