Allowed the form tag to be retrieved separately from the rest of the

form, which allows more flexibility in how the form is built. Hopefully
fix up the passing of the submit value for ajax calls now as well

htdocs/lib/pieforms/pieform.php

@@ -678,6 +678,24 @@ class Pieform {
         return $this->renderer;
     }
 
+    /**
+     * Returns the HTML for the <form...> tag
+     *
+     * @return string
+     */
+    public function get_form_tag() {
+        $result = '<form';
+        foreach (array('name', 'method', 'action') as $attribute) {
+            $result .= ' ' . $attribute . '="' . $this->{$attribute} . '"';
+        }
+        $result .= ' id="' . $this->name . '"';
+        if ($this->fileupload) {
+            $result .= ' enctype="multipart/form-data"';
+        }
+        $result .= '>';
+        return $result;
+    }
+
     /**
      * Returns whether the form has been submitted
      *
@@ -695,20 +713,15 @@ class Pieform {
      * the other hand, this means you must be careful about escaping the URL,
      * especially if it has data from an external source in it.
      *
+     * @param boolean Whether to include the <form...></form> tags in the output
      * @return string The form as HTML
      */
-    public function build() {
-        $result = '<form';
-        foreach (array('name', 'method', 'action') as $attribute) {
-            $result .= ' ' . $attribute . '="' . $this->{$attribute} . '"';
-        }
-        $result .= ' id="' . $this->name . '"';
-        if ($this->fileupload) {
-            $result .= ' enctype="multipart/form-data"';
+    public function build($outputformtags=true) {
+        $result = '';
+        if ($outputformtags) {
+            $result = $this->get_form_tag() . "\n";
         }
-        $result .= ">\n";
 
-        // @todo masks attempts in pieform_render_element, including the error handling there
         $this->include_plugin('renderer',  $this->renderer);
         
         // Form header
@@ -743,7 +756,9 @@ class Pieform {
             'value' => ''
         );
         $result .= pieform_render_hidden($element, $this);
-        $result .= "</form>\n";
+        if ($outputformtags) {
+            $result .= "</form>\n";
+        }
 
         if ($this->ajaxpost) {
             $result .= '<script language="javascript" type="text/javascript">';
@@ -768,6 +783,9 @@ class Pieform {
             return $function($element, $this);
         }
         $global = ($this->method == 'get') ? $_GET : $_POST;
+        if (!empty($element['ajaxmessages']) && isset($global[$element['name']])) {
+            return $element['value'];
+        }
         if (isset($element['value'])) {
             return $element['value'];
         }
@@ -934,7 +952,7 @@ EOF;
         }
 
         // Add only the submit button that was clicked
-        $result .= "    data['{$this->name}_' + {$this->name}_btn] = document.forms['$this->name'].elements['{$this->name}_' + {$this->name}_btn].value;\n";
+        $result .= "    data[{$this->name}_btn] = document.forms['$this->name'].elements['{$this->name}_' + {$this->name}_btn].value;\n";
 
         // Add the hidden element for detecting form submission
         $result .= "    data['pieform_{$this->name}'] = '';\n";