Gajus\Dora\Form::input PHP Method

    public function input($name, array $attributes = null, array $properties = null, $template = 'replace-with-default')
    {
        if ($properties === null) {
            $properties = [];
        }
        if ($template === 'replace-with-default') {
            $template = $this->template;
        }
        // Incremental input index is based on input name.
        if (!isset($this->input_index[$name])) {
            $this->input_index[$name] = [];
        }
        $index = count($this->input_index[$name]);
        if (isset($properties['value'])) {
            throw new Exception\InvalidArgumentException('Input instantiated using Form::input() method cannot explicitly define "value" property.');
        }
        if (isset($properties['uid'])) {
            throw new Exception\InvalidArgumentException('Input instantiated using Form::input() method cannot explicitly define "uid" property.');
        }
        $properties['uid'] = crc32($this->uid . '_' . $name . '_' . $index);
        $input = new Input($name, $attributes, $properties, $template);
        #$template = $template ? $template : $this->template;
        #$this->input_index[$name][] = $input;
        $this->input_index[$name][] = null;
        // Input name path (e.g. foo[bar]) is used to resolve input value from the Form instance data.
        $path = $input->getNamePath();
        $value = $this->getData();
        // Indicates whether input name attribute implies that expected value is an array, e.g. foo[].
        $declared_as_array = false;
        if (strpos(strrev($name), '][') === 0) {
            array_pop($path);
            $declared_as_array = true;
        }
        foreach ($path as $crumble) {
            if (!isset($value[$crumble])) {
                $value = null;
                break;
            }
            $value = $value[$crumble];
        }
        if (is_array($value)) {
            if (!$declared_as_array) {
                $value = null;
            } else {
                if (isset($attributes['multiple'])) {
                    $value = $value;
                } else {
                    if (isset($value[$index])) {
                        $value = $value[$index];
                    } else {
                        $value = null;
                    }
                }
            }
        } else {
            if ($declared_as_array) {
                $value = null;
            }
        }
        $input->setProperty('value', $value);
        return $input;
    }