Advanced Search within a Vocab / node type

I'm also looking to do a node type specific search. I think the only way to do this is by using a bare bones advanced search instead of trying to make the basic search take more parameters. At least thats what I'm gonna try next ;)

Create a module with the following

<?php

function yourModuleName_custom_form_alter($form_id, &$form) {
    // only alter content_seach_form
    if(strpos(request_uri(), 'path_to_form') !== false && $form_id == 'content_search_form'){
        // for me, path_to_form was the url of the page contiaing my search block.
        $content_type = 'content_type_to_filter_on';
        $form['content-type']= array(
                '#value' => $content_type,
                '#type' => 'hidden');
        $form['#validate'] = array('content_search_form_validate' => array());
        $form['#submit'] = array('content_search_form_submit' => array());
    }
}

/**
 * Drupal calls this processing.. but all we are doing is building the
 * search url to only look for a certain content type.
 * The module name is not prefixed to the function, this name has to match
 * the name set as the #validate function on $form
 */
function content_search_form_submit($form_id, $form_values){
   return "/search/node/" . $form_values['content_search_form_keys'] .
            "+type:" . $form_values['content-type'];

}
?>

Then I called this from my search block

<?php
print search_box('content_search_form');
?>

Your results should come out looking just like you did an advanced search with the search box containing "any keywords" and "type:some_content_type" as the final argument.

Hope this helps.

First, thanks tonnes, emackn. This is exactly what I desperately need. But I think I implemented it wrong. Can anyone please suggest what I should do next? I've vim-diffed my version of the module with the modules' code in this thread and can't find any significant differences other than the function name and content type used.

If you want to see where I'm trying to implement this, please seach the "Search eVents" block at either http://eventsvietnam.com/uee/food_beverage_home or http://eventsvietnam.com/uee/services/food_beverage or

(Please note: I did try this with the pathauto module deactivated as well and the CCK node type I'm trying to limit the search to is called "content-service", according to Drupal's Advanced Search.)

As soon as I add and activate my version of this module, "searchfnb.module" (code below), via Save Changes under admin/modules, it simply returns a blank screen. Then, when i hit the back button it shows searchfnb as activated but displays this warning message:

warning: Cannot modify header information - headers already sent by (output started at /home/eventsviet/www/www/uee/modules/searchfnb/searchfnb.module:28) in /home/eventsviet/www/www/uee/includes/common.inc on line 139.

I still tried to test it after that message, with the exact PHP code above inserted into my added search block (with input format type "PHP" selected), but it only again blanks the screen, and hitting the Back button reveals these warnings:

* warning: Cannot modify header information - headers already sent by (output started at /home/eventsviet/www/www/uee/modules/searchfnb/searchfnb.module:28) in /home/eventsviet/www/www/uee/includes/common.inc on line 139.
* warning: Cannot modify header information - headers already sent by (output started at /home/eventsviet/www/www/uee/modules/searchfnb/searchfnb.module:28) in /home/eventsviet/www/www/uee/includes/common.inc on line 266.

Re. the code related to these warnings:

01. I'm not sure what the "searchfnb.module:28" above means. My searchfnb.module is only 27 lines long.

02. In includes/common.inc,

02.a line 139 refers to header($header); in this function (comments removed):

function drupal_set_header($header = NULL) {
  static $stored_headers = array();

  if (strlen($header)) {
    header($header);
    $stored_headers[] = $header;
  }
  return implode("\n", $stored_headers);
}

02.b line 266 refers to header('Location: '. $url); in this function (blank lines and some comments removed):

function drupal_goto($path = '', $query = NULL, $fragment = NULL) {
  if (isset($_REQUEST['destination'])) {
    extract(parse_url($_REQUEST['destination']));
  }
  else if (isset($_REQUEST['edit']['destination'])) {
    extract(parse_url($_REQUEST['edit']['destination']));
  }
  $url = url($path, $query, $fragment, TRUE);
  // Before the redirect, allow modules to react to the end of the page request.
  module_invoke_all('exit', $url);
  header('Location: '. $url);
  exit();
}

My version of this module, "searchfnb.module" follows. Please note that I removed strpos(request_uri(), 'node/9') !== false &&, as emackn kindly suggested, because I have to use this search block on many pages, not just one -- though that is more than emackn suggested above because only removing request_uri(), 'node/9') !== false && is incomplete, no?.

searchfnb.module

<?php
function searchfnb_custom_form_alter($form_id, &$form) {
    // only alter content_seach_form 
    if($form_id == 'content_search_form'){
	// for me, path_to_form was the url of the page containing my search block.
        $content_type = 'content-service';
        $form['content-type']= array(
                '#value' => $content_type,
                '#type' => 'hidden');
        $form['#validate'] = array('content_search_form_validate' => array());
        $form['#submit'] = array('content_search_form_submit' => array());
    }
}

/**
* Drupal calls this processing.. but all we are doing is building the
* search url to only look for a certain content type.
* The module name is not prefixed to the function, this name has to match
* the name set as the #validate function on $form
*/
function content_search_form_submit($form_id, $form_values){
  return "/search/node/" . $form_values['content_search_form_keys'] .
            "+type:" . $form_values['content-type'];

}
?>

Just in case, here's a copy of the PHP code I plugged into my added search block:

<?php
print search_box('content_search_form');
?>

emackn, you are a freakin' GOD! If you're ever in Saigon, let me know and i'll show you the time of your life! Want a mail-order bride with none of the paperwork? (Just kidding -- about the latter, not the former. ;))

There was indeed a blank line after the final ?> Is PHP supposed to work that way?!? No need to answer that. It obviously does... Sheesh...

dose the solution given, works for drupal 5.1?

when I use

print search_box('content_search_form');

I get the 'Array' printed on my screen.I even used

print drupal_render(search_box('content_search_form'));

but it thowns a "warning: implode() [function.implode]: Bad arguments. in /var/www/loki/includes/form.inc on line 618."

Can someone throw some light on it

Hi,

Does any one know how to do the opposite of including a content type in the search. So what I am basically trying to do is the equivalent to search for all content types, except one. So I would like to do something like this "mykeyword -type:blog"
Don't include blog, but give me everything else.

Subscribing - thanks

Thanks.

I needed to have a drop down allowing my users to select a specific term from one vocabulary to search within and did the following (maybe useful to someone). It's pretty much the same as the comments above.

You will need to change these two variables to match your installation:

• $contentType = "company"; (the name of the content type to limit search to)
• $vocabularyId = 5; (The id for the vocabulary to search within)

In template.php

/**
 * Return the custom search form
 */
function custom_search_form() 
{  
  
  $vocabularyId = 5; //The id for the vocabulary to search within
  
  //Add one element to use as a search all option
  $termsFromVocab = array(-1 => t("All")) + getTermsFromVocabulary($vocabularyId);
  
  $form['customSearch_keywords'] = array(
    '#type' => 'textfield',
    '#title' => t("Enter your keywords")
  );
  
  $form['customSearch_searchCategory'] = array(
    '#type' => 'select',
    '#title' => t("Category"),
    '#options' => $termsFromVocab
  );
  
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t("Search")
  );
  
  return $form;
}

/**
 * Return the URL to a custom search when submitting this form
 */
function custom_search_form_submit($form_id, $form_values)
{
  $contentType = "company"; //Make empty to disable limiting by content type
  $keywordString = "search/node/" . $form_values['customSearch_keywords'];
  
  $termId = $form_values['customSearch_searchCategory'];
  if($termId >= 0)
  {
    $categoryString = " category:" . $termId;
  }
  
  $contentTypeString = "";
  if($contentType != "")
  {
    $contentTypeString = " type:$contentType";
  }
  return $keywordString . $categoryString . $contentTypeString;
}

/**
 * Gets all term ids and names in the given vocabulary.
 * $param $vocabularyId The id for the vocabulary to return all terms from.
 * $return An array containing the termid as key and the termname as value for that key.
 */
function getTermsFromVocabulary($vocabularyId)
{
  $termsList = array();
  
  $terms = taxonomy_get_tree($vocabularyId);
	foreach ($terms as $term)
  {
    $termsList[$term->tid] = $term->name;
	}
  
  return $termsList;
}

And I call my search form from my new block customSearch

print drupal_get_form('custom_search_form');

subscribe

There's a chapter in Pro Drupal Development which describes a custom built search module. The chapter is badly written with little or no information about stuff you generally would like to know about i.e. the stuff above. However there's one line of code where they call a function that is called do_search(). Which basically does "a query on the full-text search index for a word or words". So my idea was to hook into that when building my customized search function. The function head looks like this

function do_search($keywords, $type, $join1 = '', $where1 = '1', $arguments1 = array(), $columns2 = 'i.relevance AS score', $join2 = '', $arguments2 = array(), $sort_parameters = 'ORDER BY score DESC') { ...

So using the definitions for it(you'll have to read it yourself to understand) I patched together something using the example above(put this in your template.php)

function print_r_html($data,$return_data=false)
{
    $data = print_r($data,true);
    $data = str_replace( " "," ", $data);
    $data = str_replace( "\r\n","<br>\r\n", $data);
    $data = str_replace( "\r","<br>\r", $data);
    $data = str_replace( "\n","<br>\n", $data);

    if (!$return_data)
        echo $data;   
    else
        return $data;
}



function product_vendor_search_form() {
	$form['#prefix'] = t('<h1>S&ouml;k Hund</h1>');
    $form['pv_keywords'] = array(
        '#type' => 'textfield' 
    );
    $form['submit'] = array(
        '#type' => 'submit',
        '#value' => 'submit',
    );
    return $form;
}

function product_vendor_search_form_submit($form_id, $form_values) {
	$hits = do_search($form_values['pv_keywords'],'node',"INNER JOIN {node} n ON n.nid = i.sid", "(n.type = 'product_vendor')");
	print_r_html($hits);
	return FALSE;
}

Finally put this in a page with the php-filter on print drupal_get_form('product_vendor_search_form');

The do_search does the query on the full-text search index but removes the unwanted nodes by the INNER JOIN and WHERE statement arguments and returns a nice list of all the elements from the index. Then you just have to get the right nodes and display them. Voila!

I don't know if this is the right way to do it, it's kind of slow and I am guessing if you have searches for attributes and such it would be faster to write your own database search function. I will try to update on my progress on this if I have the time.

subscribing