<?php
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$date_format = 'Y-j-m';
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/**
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* Returns an array containing a random data type and the editor
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* associated with that type, used by the generateData function.
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*/
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function generateType($index) {
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global $date_format;
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$rand = $index === 0 ? 1 : rand(0, 4);
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switch ($rand) {
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case 0:
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return array('data' => 'string', 'editor' => array(
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'xtype' => 'textfield',
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'allowBlank' => false
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));
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case 1:
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return array('data' => 'int', 'editor' => array(
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'xtype' => 'numberfield',
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'minValue' => 1,
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'maxValue' => 200
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));
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case 2:
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return array('data' => 'date', 'editor' => array(
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'xtype' => 'datefield',
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'format' => $date_format
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));
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case 3:
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return array('data' => 'float', 'editor' => array(
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'xtype' => 'numberfield',
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'minValue' => 400,
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'maxValue' => 800
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));
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case 4:
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return array('data' => 'bool', 'editor' => array(
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'xtype' => 'checkbox'
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));
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}
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}
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/**
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* Returns a hard-coded data value matching the type passed in.
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*/
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function getDataValue($type) {
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global $date_format;
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switch ($type['data']) {
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case 'string':
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return 'data';
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case 'int':
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return 123;
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case 'date':
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return date($date_format);
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case 'float':
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return 456.78;
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case 'bool':
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return true;
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}
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return $type;
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}
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/**
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* Generates all of the test data and field/column definitions that will
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* make up the data and metadata for this request.
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*/
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function generateData() {
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global $date_format;
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$row_count = rand(10, 30);
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$col_count = rand(3, 7);
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$types = array();
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$data['data'] = array();
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$fields = array();
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$columns = array();
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$defineFields = true;
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for ($i=0; $i<$row_count; $i++) {
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for ($j=0; $j<$col_count; $j++) {
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// first pass through columns only, define fields and columns
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if ($defineFields) {
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// generate a random data type for the field/column
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$type = generateType($j);
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array_push($types, $type);
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// =====================================================================
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// define the default placeholder field definition. this fields
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// config is supported by the metachange handling in Ext by default
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// to reconfigure the data store's field definitions.
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$field = array(
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'name' => 'field-'.($j+1),
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'type' => $type['data']
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);
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// add any type-specific field attributes
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if ($type['data'] === 'date') {
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$field['dateFormat'] = $date_format;
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}
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// add the field to the fields list
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array_push($fields, $field);
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// =====================================================================
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// define the default placeholder column definition to match the field.
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// note that this columns block only applies to grids. in the past the
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// fields config was reused both by the store and also by grids, but since
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// it is usually preferable to add column-specific metadata that the store
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// doesn't care about, it's usually better to split the two definitions.
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$col = array(
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'dataIndex' => 'field-'.($j+1)
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);
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// add in column-specific attributes
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if ($j === 0) {
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// special config for the id column, fixed width and non-editable
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$col['text'] = 'ID';
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$col['width'] = 40;
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}
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else {
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$col['text'] = 'Field '.($j+1).' ('.$type['data'].')';
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$col['editor'] = $type['editor'];
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$col['flex'] = 1;
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}
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// add in type-specific column attributes
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switch ($type['data']) {
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case 'date':
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$col['xtype'] = 'datecolumn';
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$col['format'] = $date_format;
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break;
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case 'float':
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$col['xtype'] = 'numbercolumn';
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$col['format'] = '$0.00';
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break;
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case 'bool':
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//$col['xtype'] = 'checkcolumn';
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break;
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}
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// finally, add the column to the columns list
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array_push($columns, $col);
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}
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// every row/col pass, load up some data
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$row['field-'.($j+1)] = $j == 0 ? ($i+1) : getDataValue($types[$j]);
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}
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// flip this flag after the first column pass since the fields are defined
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$defineFields = false;
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// add the row of generated data to the top-level data object
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// that will be returned in the response
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array_push($data['data'], $row);
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}
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// assemble the metadata
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$meta = array();
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$meta['fields'] = $fields;
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$meta['columns'] = $columns;
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$meta['root'] = 'data';
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$meta['idProperty'] = 'field-1';
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$meta['messageProperty'] = 'msg';
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// assemble the top-level data object being returned.
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// the data is already in $data['data'] at this point.
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$data['metaData'] = $meta;
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$data['total'] = $row_count;
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$data['msg'] = 'Success!';
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return $data;
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}
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echo json_encode(generateData());
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?>
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