truefalse.install in Quiz 7.5

Truefalse question install file.

File

question_types/truefalse/truefalse.install

<?php

/**
 * @file
 * Truefalse question install file.
 */

/**
 * Implements hook_install().
 */
function truefalse_install() {

  // Add body field to true false node.
  quiz_question_add_body_field('truefalse');
  variable_set('node_options_truefalse', array(
    'status',
  ));
}

/**
 * Implements hook_schema().
 */
function truefalse_schema() {

  // Extensions to nodes for T/F.
  $schema['quiz_truefalse_node'] = array(
    'fields' => array(
      'nid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'vid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'correct_answer' => array(
        'description' => 'The correct answer for the user to give. 1 for true.',
        'type' => 'int',
        'unsigned' => TRUE,
        'size' => 'tiny',
        'default' => 0,
      ),
    ),
    'primary key' => array(
      'vid',
      'nid',
    ),
  );

  // Place to store user answers for T/F questions.
  $schema['quiz_truefalse_user_answers'] = array(
    'fields' => array(
      'answer_id' => array(
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'result_answer_id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => FALSE,
      ),
      'answer' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'size' => 'tiny',
        'default' => 0,
      ),
      'score' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'primary key' => array(
      'answer_id',
    ),
    'unique keys' => array(
      'result_answer_id' => array(
        'result_answer_id',
      ),
    ),
  );
  return $schema;
}

/**
 * Normalize data storage.
 */
function truefalse_update_7500() {
  db_drop_primary_key('quiz_truefalse_user_answers');
  db_add_field('quiz_truefalse_user_answers', 'answer_id', array(
    'type' => 'serial',
    'not null' => TRUE,
  ), array(
    'primary key' => array(
      'answer_id',
    ),
  ));
  db_add_field('quiz_truefalse_user_answers', 'result_answer_id', array(
    'type' => 'int',
    'unsigned' => TRUE,
    'not null' => FALSE,
  ));
  db_query("UPDATE {quiz_truefalse_user_answers} qtua\n    INNER JOIN {quiz_node_results_answers} qnra ON (qtua.question_nid = qnra.question_nid\n    AND qtua.question_vid = qnra.question_vid\n    AND qtua.result_id = qnra.result_id)\n    SET qtua.result_answer_id = qnra.result_answer_id");
  db_drop_field('quiz_truefalse_user_answers', 'result_id');
  db_drop_field('quiz_truefalse_user_answers', 'question_nid');
  db_drop_field('quiz_truefalse_user_answers', 'question_vid');
  db_add_unique_key('quiz_truefalse_user_answers', 'result_answer_id', array(
    'result_answer_id',
  ));
}

Functions

Name	Description
truefalse_install	Implements hook_install().
truefalse_schema	Implements hook_schema().
truefalse_update_7500	Normalize data storage.