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Asked: 2026-05-26T14:51:40+00:00

I’d like to implement a simple AJAX function locally that allows me to autocomplete

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I’d like to implement a simple AJAX function locally that allows me to autocomplete node titles of already existing nodes as the user types. To that end, I need the ability to have an API that I can search on node titles. The problem is that when I output raw JSON, it comes surrounded by tags. So, no matter what I do, I keep getting…

<html>
    <head>
    </head>
    <body>
        <pre style="word-wrap: break-word; white-space: pre-wrap;"> {json here}</pre>
    </body>
</html>

I’ve tried implementing a custom page template that only outputs content already, that produced the same results. Here is how I am currently doing this, in my module file…

<?php

/**
 * Implementation of hook_menu()
 */
function content_relation_menu() {
    $items = array();
    $items['api'] = array(
        'title' => 'Search',
        'page callback' => 'content_relation_get',
        'access callback' => TRUE,
        'type' => MENU_CALLBACK,
    );

    return $items;
}

function content_relation_get($term = '') {
    drupal_add_http_header('Content-Type', 'application/javascript; utf-8');
    $var = json_encode(
        db_query("SELECT nid,title FROM {node} WHERE title LIKE :title LIMIT 5", array(":title" => $term.'%'))->fetchAll()
    );
    echo $var;
    exit(0);
}

How can I return JUST raw JSON?

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1 Answer

  1. Editorial Team

    The ‘Drupal’ way is using drupal_json_output() and drupal_exit(). 

    $data = db_query("SELECT nid,title FROM {node} WHERE title LIKE :title LIMIT 5", array(":title" => $term.'%'))->fetchAll();

drupal_json_output($data);

drupal_exit();

    UPDATE

    I’ve just put your code, as is, into a module and all I get when requesting http://site.com/api is the expected JSON, there are no tags. The problem won’t be anything to do with Drupal, more likely to do with server/browser configuration.

    This link may help:

    What do browsers want for the Content-Type header on json ajax responses?

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