farm_grazing.paddocks.productivity.inc

<?php

/**
 * @file
 * Grazing paddock productivity form.
 */

/**
 * Set paddock productivity form callback.
 */
function farm_grazing_plan_productivity_form($form, &$form_state, $plan_obj) {

  // Load utility functions.
  module_load_include('inc', 'farm_grazing', 'farm_grazing.utils');

  // Set the page title
  drupal_set_title(t('Rate Paddock Productivity'));

  // get the plan id from the plan object
  $plan = $plan_obj->id;

  $form['#tree'] = TRUE;

  // Return markup
  $form['text'] = array(
    '#markup' => t('<p>Enter a value for each paddock in the Forage Quality field, then click the [Save] button. See the Help button for more information.</p>'),
  );

  $form['plan'] = array(
    '#type' => 'value',
    '#value' => $plan,
  );

  $header = array(
    t('Name'),
    t('Forage Quality'),
    t('Est. Relative Quality'),
  );

  // get a list of selected paddocks
  $selected = farm_grazing_get_selected_paddock_quality_for_plan($plan);

  $form['paddocks'] = array(
    '#theme' => 'farm_grazing_paddocks_productivity',
    '#header' => $header,
  );

  $num = 0;
  $pad_avg = 0;
  $tot_sum = 0;

  foreach ($selected as $paddock_id => $quality) {
    $term = taxonomy_term_load($paddock_id);
    $form['paddocks'][$paddock_id]['name'] = array(
      '#markup' => l($term->name, url('taxonomy/term/' . $paddock_id, array('query' => array('destination' => current_path())))),
    );
    $form['paddocks'][$paddock_id]['quality'] = array(
      '#type' => 'textfield',
      '#title' => t('Quality'),
      '#title_display' => 'invisible',
      '#default_value' => $quality,
      '#size' => 30,
      '#maxlength' => 30,
    );
    $pad_avg = $pad_avg + $quality;

    $tot_quality = $quality * farm_area_calculate_area($paddock_id);
    $form['paddocks'][$paddock_id]['total'] = array(
      '#prefix' => '<p style="text-align:right">',
      '#markup' => round($tot_quality, 1),
      '#suffix' => '</p>',
    );
    $tot_sum = $tot_sum + $tot_quality;
    $num++;
  }

  // Calculate the averages (only if $num is greater than one to prevent
  // division by zero or one).
  if ($num > 1) {
    $pad_avg = $pad_avg / $num;
    $tot_avg = $tot_sum / $num;
  }

  $form['summary']['paddock_cnt'] = array(
    '#prefix' => '<p>' . t('Paddock count: '),
    '#markup' => $num,
    '#suffix' => '</p>',
  );

  $form['summary']['avg_rating'] = array(
    '#prefix' => '<p>' . t('Average AD/A or Rating: '),
    '#markup' => round($pad_avg, 1),
    '#suffix' => '</p>',
  );

  $form['summary']['avg_tot_rating'] = array(
    '#prefix' => '<p>' . t('Average Total AD/A or Rating: '),
    '#markup' => round($tot_avg, 1),
    '#suffix' => '</p>',
  );

  $form['summary']['cum_tot_rating'] = array(
    '#prefix' => '<p>' . t('Cumulative Total AD/A or Rating: '),
    '#markup' => round($tot_sum, 1),
    '#suffix' => '</p>',
  );

  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save'),
    '#submit' => array('farm_grazing_plan_productivity_form_submit'),
    '#validate' => array('farm_grazing_plan_productivity_form_validate'),
  );

  return $form;
}

/**
 * Validate handler for farm_grazing_paddocks_productivity_form
 */
function farm_grazing_plan_productivity_form_validate($form, &$form_state) {

  foreach ($form_state['values']['paddocks'] as $id => $val) {
    if (!is_numeric($val['quality']) or $val['quality'] < 0.0) {
      form_set_error('quality', t('Forage Quality must be numeric >= 0.0'));
    }
  }
}

/**
 * Process the paddock productivity form on submit
 */
function farm_grazing_plan_productivity_form_submit($form, &$form_state) {

  $plan = $form_state['values']['plan'];

  foreach ($form_state['values']['paddocks'] as $key => $val) {
    db_update('farm_grazing_plan_paddock')
      ->fields(array(
        'quality' => $val['quality'],
      ))
      ->condition('plan_id', $plan)
      ->condition('paddock_id', $key)
      ->execute();
  }
}

/**
 * Implements hook_theme for farm_grazing_paddocks_productivity
 */
function theme_farm_grazing_paddocks_productivity(&$vars) {

  $form = $vars['form'];

  $rows = array();
  foreach (element_children($form) as $key) {
    $rows[] = array(
      render($form[$key]['name']),
      render($form[$key]['quality']),
      render($form[$key]['total']),
    );
  }

  $header = $form['#header'];

  return theme('table', array(
    'header' => $header,
    'rows' => $rows,
    'submit' => render($form['submit']),
  ));
}