mirror of
https://github.com/bcit-ci/CodeIgniter.git
synced 2025-02-20 11:13:29 +08:00
...
World Wide Web Server
parent
dbda3ad147
commit
e287bde872
374
Generate-a-form-from-a-DB-table.md
Executable file
374
Generate-a-form-from-a-DB-table.md
Executable file
@ -0,0 +1,374 @@
|
||||
This depends on [[XAJAX]] CI library. If you don't want to use that then it should be simple to eliminate this dependency.
|
||||
|
||||
How to use this code:
|
||||
|
||||
1)Copy the functions below into your controller,
|
||||
2)Create the tables described in the SQL towards the bottom of this page,
|
||||
3)Create a view named "managetables" and paste the view code from the bottom of this page into it.
|
||||
4)???
|
||||
5)Profit!
|
||||
|
||||
Here are the functions required:
|
||||
|
||||
The _manageFields function is an internal function called using xajax:
|
||||
|
||||
[code]
|
||||
function _manageFields($table){
|
||||
$table = $this->input->xss_clean($table);
|
||||
$fields = $this->db->list_fields($table);
|
||||
foreach($fields as $field){
|
||||
$fieldQuery = $this->db->getWhere('Management_fields',array('FieldName' => $field, 'InTable' => $table));
|
||||
if($fieldQuery->num_rows() > 0){
|
||||
$fieldRow = $fieldQuery->result();
|
||||
$fieldRow = $fieldRow[0];
|
||||
if($fieldRow->AllowManagement){
|
||||
$displayFields[$field][$field] = '<div id="'.$field.'manageToggle">'
|
||||
.anchor('#','Make Unmanaged','onclick="xajax_toggleManagement(\''.$table.'\',\''.$field.'\');return false;"')
|
||||
.'</div>';
|
||||
}else{
|
||||
$displayFields[$field][$field] = '<div id="'.$field.'manageToggle">'
|
||||
.anchor('#','Make Managed','onclick="xajax_toggleManagement(\''.$table.'\',\''.$field.'\');return false;"')
|
||||
.'</div>';
|
||||
}
|
||||
}
|
||||
}
|
||||
$objResponse = new xajaxResponse();
|
||||
$objResponse->addAssign($table."manageFields","innerHTML", ul($displayFields));
|
||||
return $objResponse->getXML();
|
||||
}
|
||||
[/code]
|
||||
|
||||
The _addTabletoManagementTable function in an internal function called using xajax:
|
||||
|
||||
[code]
|
||||
function _addTableToManagementTable($table){
|
||||
$table = $this->input->xss_clean($table);
|
||||
$tableQuery = $this->db->getWhere('Management_tables',array('TableName' => $table));
|
||||
if($tableQuery->num_rows() == 0){
|
||||
$dbInsert = array('TableName' => $table,
|
||||
'AllowManagement' => 1);
|
||||
$this->db->insert('Management_tables',$dbInsert);
|
||||
$fields = $this->db->list_fields($table);
|
||||
foreach($fields as $field){
|
||||
$dbInsert = array('FieldName' => $field,
|
||||
'InTable' => $table,
|
||||
'AllowManagement' => 1);
|
||||
$this->db->insert('Management_fields',$dbInsert);
|
||||
}
|
||||
}
|
||||
$display = anchor('#','Make Unmanaged','onclick="xajax_toggleManagement(\''.$table.'\');return false;"');
|
||||
$objResponse = new xajaxResponse();
|
||||
$objResponse->addAssign($table."manageToggle","innerHTML", $display);
|
||||
return $objResponse->getXML();
|
||||
}
|
||||
[/code]
|
||||
|
||||
Simple xajax toggle for table management
|
||||
|
||||
[code]
|
||||
function _toggleManagement($table,$field = FALSE){
|
||||
$objResponse = new xajaxResponse();
|
||||
if(!$field){
|
||||
$tableQuery = $this->db->getWhere('Management_tables',array('TableName' => $table));
|
||||
if($tableQuery->num_rows() > 0){
|
||||
$tableRow = $tableQuery->result();
|
||||
$tableRow = $tableRow[0];
|
||||
if($tableRow->AllowManagement){
|
||||
$this->db->set('AllowManagement',0);
|
||||
$display = anchor('#','Make Managed','onclick="xajax_toggleManagement(\''.$table.'\');return false;"');
|
||||
$objResponse->addAssign($table.'manageFields',"innerHTML", '');
|
||||
}else{
|
||||
$this->db->set('AllowManagement',1);
|
||||
$display = anchor('#','Make Unmanaged','onclick="xajax_toggleManagement(\''.$table.'\');return false;"');
|
||||
$fieldDisplay = anchor('#','Manage Fields','onclick="xajax_ManageFields(\''.$table.'\');return false;"');
|
||||
$objResponse->addAssign($table.'manageFields',"innerHTML", $fieldDisplay);
|
||||
}
|
||||
$this->db->where('TableName',$table);
|
||||
$this->db->update('Management_tables');
|
||||
}
|
||||
$objResponse->addAssign($table."manageToggle","innerHTML", $display);
|
||||
}else{
|
||||
$fieldQuery = $this->db->getWhere('Management_fields',array('FieldName' => $field, 'InTable' => $table));
|
||||
if($fieldQuery->num_rows() > 0){
|
||||
$fieldRow = $fieldQuery->result();
|
||||
$fieldRow = $fieldRow[0];
|
||||
if($fieldRow->AllowManagement){
|
||||
$this->db->set('AllowManagement',0);
|
||||
$display = anchor('#','Make Managed','onclick="xajax_toggleManagement(\''.$table.'\',\''.$field.'\');return false;"');
|
||||
}else{
|
||||
$this->db->set('AllowManagement',1);
|
||||
$display = anchor('#','Make Unmanaged','onclick="xajax_toggleManagement(\''.$table.'\',\''.$field.'\');return false;"');
|
||||
}
|
||||
$this->db->where('FieldName',$field);
|
||||
$this->db->where('InTable',$table);
|
||||
$this->db->update('Management_fields');
|
||||
}
|
||||
$objResponse = new xajaxResponse();
|
||||
$objResponse->addAssign($field."manageToggle","innerHTML", $display);
|
||||
}
|
||||
return $objResponse->getXML();
|
||||
}
|
||||
[/code]
|
||||
|
||||
This is the function you want to reference from your browser in order to start the magic rolling.
|
||||
|
||||
[code]
|
||||
function managetables(){
|
||||
$this->load->library('xajax');
|
||||
$this->xajax->registerFunction(array('toggleManagement',&$this,'_toggleManagement'));
|
||||
$this->xajax->registerFunction(array('addTableToManagementTable',&$this,'_addTableToManagementTable'));
|
||||
$this->xajax->registerFunction(array('ManageFields',&$this,'_ManageFields'));
|
||||
$this->xajax->processRequests();
|
||||
|
||||
$tables = $this->db->list_tables();
|
||||
foreach($tables as $table){
|
||||
if($table != 'Management_tables' && $table != 'Management_fields'){
|
||||
$tableQuery = $this->db->getWhere('Management_tables',array('TableName' => $table));
|
||||
if($tableQuery->num_rows() > 0){
|
||||
$tableRow = $tableQuery->result();
|
||||
$tableRow = $tableRow[0];
|
||||
if($tableRow->AllowManagement){
|
||||
$displayTables[$table][$table] = '<div id="'.$table.'manageToggle">'
|
||||
.anchor('#','Make Unmanaged','onclick="xajax_toggleManagement(\''.$table.'\');return false;"')
|
||||
.'</div>'
|
||||
.'<div id="'.$table.'manageFields">'
|
||||
.anchor('#','Manage Fields','onclick="xajax_ManageFields(\''.$table.'\');return false;"')
|
||||
.'</div>';
|
||||
}else{
|
||||
$displayTables[$table][$table] = '<div id="'.$table.'manageToggle">'
|
||||
.anchor('#','Make Managed','onclick="xajax_toggleManagement(\''.$table.'\');return false;"')
|
||||
.'</div>'
|
||||
.'<div id="'.$table.'manageFields">'
|
||||
.'</div>';
|
||||
}
|
||||
}else{
|
||||
$displayTables[$table][$table] = '<span id="'.$table.'manageToggle">'
|
||||
.anchor('#','Add to Management_tables table','onclick="xajax_addTableToManagementTable(\''.$table.'\');return false;"')
|
||||
.'</span>';
|
||||
}
|
||||
}
|
||||
}
|
||||
$data['xajax_js'] = $this->xajax->getjavascript(null, '/_js/xajax.js');
|
||||
$data['content'] = ul($displayTables);
|
||||
$this->load->view('managetables',$data);
|
||||
}
|
||||
[/code]
|
||||
|
||||
I have made this an internal function so I can just call it from other functions and have it return the basic form elements. Can work as a url-addressable function with some minor tweaks. This function depends on the table being passed into to already being in the management tables (see SQL code below). I have debated making it automatically suck the table and fields into the management tables but have not yet taken that step since I like to be a bit more hands-on with this kind of thing.
|
||||
|
||||
[code]
|
||||
function _formBuilder($table,$values=array(),$valuesAsHidden=FALSE){
|
||||
$columns = $this->db->query($this->db->_list_columns($table));
|
||||
if($columns->num_rows() > 0){
|
||||
foreach ($columns->result_array() as $columnInfo){
|
||||
foreach($columnInfo as $key => $val){
|
||||
if($key == 'Field'){
|
||||
$fieldName = $val;
|
||||
if(!$this->data->getManagementStatus($table,$fieldName)) break;
|
||||
}
|
||||
$arrTableInfo[$fieldName][$key] = $val;
|
||||
}
|
||||
}
|
||||
$formDisplay = '';
|
||||
foreach($arrTableInfo as $fieldName => $arrInfo){
|
||||
$arrFormField = '';
|
||||
if(isset($values[$fieldName])){
|
||||
$arrFormField[$fieldName] = $values[$fieldName];
|
||||
$formFunction = 'form_hidden';
|
||||
}else{
|
||||
if($fieldName == 'InCity' && $table == 'minisites'){
|
||||
$selectName = $fieldName;
|
||||
$selectExtra = ' class="cms_form_dropdown"';
|
||||
$retval[$fieldName] = form_dropdown($selectName,$this->data->getCityArray(),'',$selectExtra);
|
||||
continue;
|
||||
}
|
||||
$arrFormField['name'] = $fieldName;
|
||||
$arrFormField['id'] = $fieldName;
|
||||
foreach($arrInfo as $key => $val){
|
||||
switch($key){
|
||||
case 'Type':
|
||||
$formType = explode('(',$val);
|
||||
switch($formType[0]){
|
||||
case 'varchar': //always has a size
|
||||
case "char":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = str_replace(')','',$formType[1]);
|
||||
break;
|
||||
case "tinyint":
|
||||
case "smallint":
|
||||
case "mediumint":
|
||||
case "int":
|
||||
case "bigint":
|
||||
case "year":
|
||||
$formFunction = 'form_input';
|
||||
$numericInfo = explode(' ',$formType[1]);
|
||||
$arrFormField['maxlength'] = str_replace(')','',$numericInfo[0]);
|
||||
if(isset($numericInfo[1])){
|
||||
$validationExtras = $numericInfo[1];
|
||||
}
|
||||
break;
|
||||
case "datetime":
|
||||
case "timestamp":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = '19';
|
||||
break;
|
||||
case "float":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = '23';
|
||||
break;
|
||||
case "double":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = '53';
|
||||
break;
|
||||
case "decimal":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = '64';
|
||||
break;
|
||||
case "date":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = '10';
|
||||
break;
|
||||
case "year":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = '4';
|
||||
break;
|
||||
case "time":
|
||||
$formFunction = 'form_input';
|
||||
$arrFormField['maxlength'] = '8';
|
||||
break;
|
||||
case 'tinytext':
|
||||
$formFunction = 'form_input';
|
||||
if(isset($formType[1])){
|
||||
$arrFormField['maxlength'] = str_replace(')','',$formType[1]);
|
||||
}else{
|
||||
$arrFormField['maxlength'] = '255';
|
||||
}
|
||||
break;
|
||||
case 'text':
|
||||
$formFunction = 'form_textarea';
|
||||
if(isset($formType[1])){
|
||||
$arrFormField['maxlength'] = str_replace(')','',$formType[1]);
|
||||
}else{
|
||||
$arrFormField['maxlength'] = '65535';
|
||||
}
|
||||
break;
|
||||
case 'mediumtext':
|
||||
case 'longtext':
|
||||
$formFunction = 'form_textarea';
|
||||
if(isset($formType[1])){
|
||||
$arrFormField['maxlength'] = str_replace(')','',$formType[1]);
|
||||
}else{
|
||||
$arrFormField['maxlength'] = '16777215';
|
||||
}
|
||||
break;
|
||||
case 'set':
|
||||
$formFunction = 'form_dropdown';
|
||||
$selectExtra = 'multiple="multiple"';
|
||||
$setVals = explode(',',$val);
|
||||
$totalVals = count($setVals);
|
||||
$setVals[0] = str_replace("set('",'',$setVals[0]);
|
||||
$setVals[($totalVals - 1)] = str_replace("')",'',$setVals[($totalVals - 1)]);
|
||||
foreach($setVals as $key => $val){
|
||||
$setVals[$key] = str_replace("'",'',$setVals[$key]);
|
||||
$arrFormField[$setVals[$key]] = $setVals[$key];
|
||||
}
|
||||
break;
|
||||
case 'enum':
|
||||
$formFunction = 'form_dropdown';
|
||||
$selectExtra = '';
|
||||
$enumVals = explode(',',$val);
|
||||
$totalVals = count($enumVals);
|
||||
$enumVals[0] = str_replace("enum('",'',$enumVals[0]);
|
||||
$enumVals[($totalVals - 1)] = str_replace("')",'',$enumVals[($totalVals - 1)]);
|
||||
$arrFormField['selectone'] = 'Select One';
|
||||
foreach($enumVals as $key => $val){
|
||||
$enumVals[$key] = str_replace("'",'',$enumVals[$key]);
|
||||
$arrFormField[$enumVals[$key]] = $enumVals[$key];
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case 'Null':
|
||||
//todo: should there be a "required" validation rule based on this?
|
||||
// currently I'm leaning towards "no" and making them specify
|
||||
// validation rules separately and deliberately
|
||||
break;
|
||||
case 'Key':
|
||||
if($val != ''){
|
||||
if(@$validationExtras != ''){
|
||||
$validationExtras .= '|'.$val;
|
||||
}else{
|
||||
$validationExtras = $val;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 'Default':
|
||||
//$arrFormField['value'] = $val; //considering leaving this out since the default is going
|
||||
//to be populated if there is no value. Would have to unset
|
||||
//the value before inserting/updating the DB record
|
||||
break;
|
||||
case 'Extra':
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
if($formFunction != "form_dropdown"){
|
||||
if($formFunction != 'form_hidden'){
|
||||
$arrFormField['class'] = 'css_'.$formFunction;
|
||||
}
|
||||
$retval[$fieldName] = $formFunction($arrFormField);
|
||||
}else{
|
||||
$selectName = $arrFormField['name'];
|
||||
unset($arrFormField['name']);
|
||||
unset($arrFormField['id']);
|
||||
$selectExtra .= ' class="css_'.$formFunction.'"';
|
||||
$retval[$fieldName] = $formFunction($selectName,$arrFormField,'selectone',$selectExtra);
|
||||
}
|
||||
}
|
||||
}else{
|
||||
$retval = FALSE;
|
||||
}
|
||||
return $retval;
|
||||
}
|
||||
[/code]
|
||||
|
||||
Here is the SQL (exported from mySQL) to create the management tables:
|
||||
|
||||
[code]
|
||||
--
|
||||
-- Table structure for table `Management_fields`
|
||||
--
|
||||
|
||||
CREATE TABLE `Management_fields` (
|
||||
`FieldName` varchar(255) NOT NULL,
|
||||
`InTable` varchar(255) NOT NULL,
|
||||
`AllowManagement` tinyint(1) NOT NULL default '1',
|
||||
PRIMARY KEY (`FieldName`,`InTable`)
|
||||
) TYPE=MyISAM;
|
||||
|
||||
-- --------------------------------------------------------
|
||||
|
||||
--
|
||||
-- Table structure for table `Management_tables`
|
||||
--
|
||||
|
||||
CREATE TABLE `Management_tables` (
|
||||
`TableName` varchar(255) NOT NULL,
|
||||
`AllowManagement` tinyint(1) NOT NULL default '1',
|
||||
PRIMARY KEY (`TableName`)
|
||||
) TYPE=MyISAM;
|
||||
[/code]
|
||||
|
||||
My simple view for the "managetables" function:
|
||||
|
||||
[code]
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml">
|
||||
<head>
|
||||
<?=$xajax_js;?>
|
||||
</head>
|
||||
<body><?=$this->load->view('tabletestheader','',TRUE);?>
|
||||
<?=$content;?>
|
||||
</body>
|
||||
</html>
|
||||
[/code]
|
||||
Loading…
x
Reference in New Issue
Block a user