Best way to disable a field in edit view?

[msuser]

In the edit view of an opportunity how would you disable (grey out) a particular text field based on a value for that opportunitity?

im guessing i'd have to put some code in a logic hook (which one?) to disable to form field based on this value but i dont knwo where to begin. most of the similar questions i've seen have been javascript based since they were the result of something clicking a drop down or something, where as mine would be PHP based.

[letrium]

MODULE_NAME/metadata/editviewdefs.php (better to put it to custom folder to make it be upgrade-safe)

 'PARENT_FIELD_NAME' => array(
          'name' => 'PARENT_FIELD_NAME',
            'displayParams' => 
            array (
              'javascript' => onchange="if(this.value == \'1\' ) {document.EditView.CHILD_FIELD_NAME.disabled =\'disabled\' }else{document.EditView.CHILD_FIELD_NAME.disabled = \'\'}",
            ),
), 
  

[andopes]

This can be easily accomplished by DevToolKit.
You can find the link to project page at my signature.

Regards

[msuser]

MODULE_NAME/metadata/editviewdefs.php (better to put it to custom folder to make it be upgrade-safe)

 'PARENT_FIELD_NAME' => array(
          'name' => 'PARENT_FIELD_NAME',
            'displayParams' => 
            array (
              'javascript' => onchange="if(this.value == \'1\' ) {document.EditView.CHILD_FIELD_NAME.disabled =\'disabled\' }else{document.EditView.CHILD_FIELD_NAME.disabled = \'\'}",
            ),
), 
  

hmmm i would have though i don't need to use javascript since all i want is when you go to the edit screen i want to disable the "name" of the opportunitiy and the "account name" of the opportunitity is a value of that bean is set to 1 (or whatever). i tried this, doesn't seem to work.

and i can't install a custom dev kit on this version unfortunately, not allowed to.

[letrium]

 'FIELD_NAME' => array(
  'name' => 'FIELD_NAME',
  'customCode' => '
      {if $fields.SOME_FIELD.value}
          <input type="text" name="FIELD_NAME" value= "{$fields.FIELD_NAME.value}">
      {/else}
            {$fields.FIELD_NAME.value}
       {/if}
  '
),