ts_test/ts_test.module at master · webdobe/ts_test · GitHub

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<?php

/**
 * Implements hook_menu().
 */
function ts_test_menu(){
  $items = array();
  // Doing a normal callback to render the drupal form.
  // Instead of using drupal_get_form as callback.
  $items['ts_test'] = array(
    'title' => 'ThinkShout Test',
    'page callback' => 'ts_test_callback',
    'access callback' => TRUE,
    'description' => 'ThinkShout test form.',
  );
  return $items;
}

/**
 * Page callback for ts_test.
 */
function ts_test_callback(){
  $output = '';

  // Get the drupal form.
  $form = drupal_get_form('ts_test_form');

  // Some render fun.
  $content = array(
    '#type' => 'html_tag',
    '#tag' => 'p',
    '#attributes' => array(
      'class' => 'bmi-content',
    ),
    '#value' => t('This is a simple BMI (Body Mass Index) calculator.  Please enter your weight (in lbs) and your height (in inches).  We will give your BMI'),
  );

  $output .= drupal_render($content);

  $output .= drupal_render($form);
  // Render and print drupal form.
  return $output;
}

/**
 * Form for ts_test.
 */
function ts_test_form($form, &$form_state) {
  // Collect my weight value.
  $form['my_weight'] = array(
    '#type' => 'textfield',
    '#title' => t('Weight'),
    '#size' => 4,
    '#description' => t('Please enter your weight in lbs.'),
    '#required' => TRUE,
  );

  // Collect my height value.
  $form['my_height'] = array(
    '#type' => 'textfield',
    '#title' => t('Height'),
    '#size' => 4,
    '#description' => t('Please enter your height in inches.'),
    '#required' => TRUE,
  );

  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Get My BMI'),
  );

  return $form;
}

/**
 * Validation handler for ts_test_form().
 */
function ts_test_form_validate($form, &$form_state) {
  if (isset($form_state['values']['my_weight'])) {
    $weight = $form_state['values']['my_weight'];
    if (!is_numeric($weight)) {
      form_error($form['my_weight'], t('You entered a non-numeric value for your weight.'));
    }
  }

  if (isset($form_state['values']['my_height'])) {
    $height = $form_state['values']['my_height'];
    if (!is_numeric($height)) {
      form_error($form['my_height'], t('You entered a non-numeric value for your height.'));
    }
  }
}

/**
 * Submit handler for ts_test_form().
 */
function ts_test_form_submit($form, &$form_state) {
  $weight = $form_state['values']['my_weight'];
  $height = $form_state['values']['my_height'];

  $height_sq = $height * $height;

  $bmi = ($weight / $height_sq) * 703;

  if ($bmi <= 18.5) {
    $weight_class = 'Underweight';
    $status = 'warning';
  }
  elseif ($bmi > 18.5 && $bmi < 25) {
    $weight_class = 'Normal weight';
    $status = 'status';
  }
  elseif ($bmi >= 25 && $bmi < 30) {
    $weight_class = 'Overweight';
    $status = 'warning';
  }
  elseif ($bmi >= 30) {
    $weight_class = 'Obese';
    $status = 'error';
  }

  $message = t('According to your BMI: %bmi, You are %weight_class', array('%bmi' => $bmi, '%weight_class' => $weight_class));

  drupal_set_message($message, $status);
}