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230 lines
7.9 KiB
230 lines
7.9 KiB
<?php
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/**
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* Manage specific tools
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* @package chamilo.library
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*/
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/**
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* Code
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*/
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// Database table definitions
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$table_sf = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD);
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$table_sf_val = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD_VALUES);
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/**
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* Add a specific field
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* @param string $name specific field name
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*/
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function add_specific_field($name) {
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$table_sf = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD);
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$name = trim($name);
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if (empty($name)) {
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return FALSE;
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}
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$sql = 'INSERT INTO %s(id, code, name) VALUES(NULL, \'%s\', \'%s\')';
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$_safe_name = Database::escape_string($name);
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$_safe_code = substr($_safe_name,0,1);
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$_safe_code = get_specific_field_code_from_name($_safe_code);
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if ($_safe_code === false) { return false; }
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$sql = sprintf($sql, $table_sf, $_safe_code, $_safe_name);
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$result = Database::query($sql);
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if ($result) {
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return Database::insert_id();
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}
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else {
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return FALSE;
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}
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}
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/**
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* Delete a specific field
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* @param int $id specific field id
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*/
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function delete_specific_field($id) {
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$table_sf = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD);
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$id = (int)$id;
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if (!is_numeric($id)) {
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return FALSE;
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}
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$sql = 'DELETE FROM %s WHERE id=%s LIMIT 1';
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$sql = sprintf($sql, $table_sf, $id);
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$result = Database::query($sql);
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//TODO also delete the corresponding values
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}
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/**
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* Edit a specific field
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* @param int $id specific field id
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* @param string $name new field name
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*/
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function edit_specific_field($id, $name) {
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$table_sf = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD);
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$id = (int)$id;
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if (!is_numeric($id)) {
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return FALSE;
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}
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$sql = 'UPDATE %s SET name = \'%s\' WHERE id = %s LIMIT 1';
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$sql = sprintf($sql, $table_sf, $name, $id);
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$result = Database::query($sql);
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}
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/**
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* @param array $conditions a list of condition (exemple : status=>STUDENT)
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* @param array $order_by a list of fields on which to sort
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* @return array An array with all specific fields, at platform level
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*/
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function get_specific_field_list($conditions = array(), $order_by = array()) {
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$table_sf = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD);
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$return_array = array();
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$sql = "SELECT * FROM $table_sf";
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if (count($conditions) > 0) {
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$sql .= ' WHERE ';
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$conditions_string_array = array();
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foreach ($conditions as $field => $value) {
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$conditions_string_array[] = $field.' = '. $value;
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}
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$sql .= implode(' AND ', $conditions_string_array);
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}
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if (count($order_by) > 0) {
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$sql .= ' ORDER BY '.implode(',',$order_by);
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}
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$sql_result = Database::query($sql);
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while ($result = Database::fetch_array($sql_result)) {
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$return_array[] = $result;
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}
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return $return_array;
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}
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/**
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* @param array $conditions a list of condition (exemple : status=>STUDENT)
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* @param array $order_by a list of fields on which sort
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* @return array An array with all users of the platform.
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*/
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function get_specific_field_values_list($conditions = array(), $order_by = array()) {
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$table_sfv = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD_VALUES);
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$return_array = array();
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$sql = "SELECT * FROM $table_sfv";
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if (count($conditions) > 0) {
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$sql .= ' WHERE ';
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$conditions_string_array = array();
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foreach ($conditions as $field => $value) {
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$conditions_string_array[] = $field.' = '. $value;
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}
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$sql .= implode(' AND ', $conditions_string_array);
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}
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if (count($order_by) > 0) {
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$sql .= ' ORDER BY '.implode(',',$order_by);
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}
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$sql_result = Database::query($sql);
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while ($result = Database::fetch_array($sql_result)) {
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$return_array[] = $result;
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}
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return $return_array;
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}
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/**
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* @param char $prefix xapian prefix
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* @param string $course_code
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* @param string $tool_id Constant from mainapi.lib.php
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* @param int $ref_id representative id inside one tool item
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* @return array
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*/
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function get_specific_field_values_list_by_prefix($prefix, $course_code, $tool_id, $ref_id) {
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$table_sf = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD);
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$table_sfv = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD_VALUES);
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$sql = 'SELECT sfv.value FROM %s sf LEFT JOIN %s sfv ON sf.id = sfv.field_id' .
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' WHERE sf.code = \'%s\' AND sfv.course_code = \'%s\' AND tool_id = \'%s\' AND sfv.ref_id = %s';
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$sql = sprintf($sql, $table_sf, $table_sfv, $prefix, $course_code, $tool_id, $ref_id);
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$sql_result = Database::query($sql);
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while ($result = Database::fetch_array($sql_result)) {
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$return_array[] = $result;
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}
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return $return_array;
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}
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/**
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* Add a specific field value
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* @param int $id_specific_field specific field id
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* @param string $course_id course code
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* @param string $tool_id tool id, from main.api.lib
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* @param int $ref_id intern id inside specific tool table
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* @param string $value specific field value
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*/
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function add_specific_field_value($id_specific_field, $course_id, $tool_id, $ref_id, $value) {
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$table_sf_values = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD_VALUES);
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$value = trim($value);
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if (empty($value)) {
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return false;
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}
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$sql = 'INSERT INTO %s(id, course_code, tool_id, ref_id, field_id, value) VALUES(NULL, \'%s\', \'%s\', %s, %s, \'%s\')';
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$sql = sprintf($sql, $table_sf_values, $course_id, $tool_id, $ref_id, $id_specific_field, Database::escape_string($value));
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$result = Database::query($sql);
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if ($result) {
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return Database::insert_id();
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} else {
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return false;
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}
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}
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/**
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* Delete all values from a specific field id, course_id, ref_id and tool
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* @param string $course_id course code
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* @param int $id_specific_field specific field id
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* @param string $tool_id tool id, from main.api.lib
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* @param int $ref_id intern id inside specific tool table
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*/
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function delete_all_specific_field_value($course_id, $id_specific_field, $tool_id, $ref_id) {
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$table_sf_values = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD_VALUES);
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$sql = 'DELETE FROM %s WHERE course_code = \'%s\' AND tool_id = \'%s\' AND ref_id = %s AND field_id = %s';
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$sql = sprintf($sql, $table_sf_values, $course_id, $tool_id, $ref_id, $id_specific_field);
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$result = Database::query($sql);
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}
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/**
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* Delete all values from a specific item (course_id, tool_id and ref_id).
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* To be used when deleting such item from Dokeos
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* @param string Course code
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* @param string Tool ID
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* @param int Internal ID used in specific tool table
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*/
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function delete_all_values_for_item($course_id, $tool_id, $ref_id) {
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$table_sf_values = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD_VALUES);
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$sql = 'DELETE FROM %s WHERE course_code = \'%s\' AND tool_id = \'%s\' AND ref_id = %s';
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$sql = sprintf($sql, $table_sf_values, $course_id, $tool_id, $ref_id);
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$result = Database::query($sql);
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}
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/**
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* Generates a code (one-letter string) for a given field name
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* Defaults to the first letter of the name, otherwise iterate through available
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* letters
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* @param string Name
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* @return string One-letter code, upper-case
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*/
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function get_specific_field_code_from_name($name) {
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// Z is used internally by Xapian
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// O & C already used by tool_id and course_id
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$list = array('A','B','D','E','F','G','H','I','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y');
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$table_sf = Database :: get_main_table(TABLE_MAIN_SPECIFIC_FIELD);
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$sql = "SELECT code FROM $table_sf ORDER BY code";
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$res = Database::query($sql);
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$code = strtoupper(substr($name,0,1));
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//if no code exists in DB, return current one
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if (Database::num_rows($res)<1) { return $code;}
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$existing_list = array();
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while ($row = Database::fetch_array($res)) {
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$existing_list[] = $row['code'];
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}
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//if the current code doesn't exist in DB, return current one
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if (!in_array($code,$existing_list)) { return $code;}
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$idx = array_search($code,$list);
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$c = count($list);
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for ($i = $idx+1, $j=0 ; $j<$c ; $i++, $j++) {
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if (!in_array($list[$i],$existing_list)) { return $idx[$i]; }
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}
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// all 26 codes are used
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return false;
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}
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