CODEWITHSUNDEEP
phpdrupal
Alex Borsody
Alex Borsody

Reputation: 2040

Unsupported operand types in drupal form

this is my form 

function dreamcharts_step7_form(&$form, &$form_state) {
   $dream = &$form_state['dream_obj'];
   $form['weight'] = array(
    '#type' => 'textfield',
    '#title' => 'Weight',
   );




    $form['tall'] = array(

    '#title' => 'How tall are you?',
    '#type' => 'select',
    '#required' => 1,
    '#default_value' => $dream->tall,
    '#value' => array( 
      '0' => '58',
      '1' => '59',
      '2' => '60',
      '3' => '61',
      '4' => '62',
      '5' => '63',
      '6' => '64',
      '7' => '65',
      '8' => '66',
      '9' => '67',
      '10' => '68',
      '11' => '69',
      '12' => '70',
      '13' => '71',
      '14' => '72',
      '15' => '73',
      '16' => '74',
      '17' => '75',
      '18' => '76',

    ),
    '#options' => array(
      '0' => '4\' 10"',
      '1' => '4\' 11"',
      '2' => '5\' 0"',
      '3' => '5\' 1"',
      '4' => '5\' 2"',
      '5' => '5\' 3"',
      '6' => '5\' 4"',
      '7' => '5\' 5"',
      '8' => '5\' 6"',
      '9' => '5\' 7"',
      '10' => '5\' 8"',
      '11' => '5\' 9"',
      '12' => '5\' 10"',
      '13' => '5\' 11"',
      '14' => '6\' 0"',
      '15' => '6\' 1"',
      '16' => '6\' 2"',
      '17' => '6\' 3"',
      '18' => '6\' 4"',
    )
  );

   $form['tip'] = array(
    '#type' => 'markup',
    '#prefix' => '<div id="hint">',
    '#suffix' => '</div>',
    '#value' => 'The combination of your weight and height lets us know your Body Mass Index or BMI.',
   );   

  $form_state['no buttons'] = TRUE; 
}

this is where I calculate the form values

function dreamcharts_step7_form_submit(&$form, &$form_state) {


  $tall = $form_state['values']['tall'];
  $weight =  $form_state['values']['weight'];

  $form_state['dream_obj']->bmi = (($weight * 703) / ($tall * $height)); 

}

I am getting Unsupported operand types with this line

  $form_state['dream_obj']->bmi = (($weight * 703) / ($tall * $height));

Upvotes: 0

Views: 2407

Answers (2)

2pha
2pha

Reputation: 10155

The '#select' type does not support '#values'. The values are taken from the key in the options array.

eg.

$form['tall'] = array(

'#title' => 'How tall are you?',
'#type' => 'select',
'#required' => 1,
'#default_value' => $dream->tall,
'#options' => array(
  '58' => '4\' 10"',
  '59' => '4\' 11"',
  '60' => '5\' 0"',
  '61' => '5\' 1"',
  '62' => '5\' 2"',
  '63' => '5\' 3"',
  '64' => '5\' 4"',
  '65' => '5\' 5"',
  '66' => '5\' 6"',
  '67' => '5\' 7"',
  '68' => '5\' 8"',
  '69' => '5\' 9"',
  '70' => '5\' 10"',
  '71' => '5\' 11"',
  '72' => '6\' 0"',
  '73' => '6\' 1"',
  '74' => '6\' 2"',
  '75' => '6\' 3"',
  '76' => '6\' 4"',
)
);

Upvotes: 1

Damien Pirsy
Damien Pirsy

Reputation: 25435

I suspect that 5'3" isn't the right form for an arithmetic operation. Try var_dumping it to see its actual form (I'm just guessing here, could it be an array?)

Convert it to an int or float value (es. using the metrical system. Why not translating the value in centimeters?) in order to use it as an operand.

Upvotes: 1

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