$query = "CALL ..........";
$result = $wpdb->get_results($query);
print_r($results);
Is returning an empty array, how do you run stored procedures from the $wpdb class?
I'm not 100% sure since I've not worked with stored procs in MySQL yet (although I have coded many a stored-proc for MS-SQL in the 90's), but try:
global $wpdb;
$wpdb->query('CALL ...');
print_r($wpdb->last_result);
Whatever you pass to $wpdb->query() gets passed to the PHP mysql_query() function so whatever works there will work with WordPress' $wpdb->query(). I do know this works:
global $wpdb;
$wpdb->query('SELECT * FROM wp_posts LIMIT 10');
print_r($wpdb->last_result);
If you want to read the source code for $wpdb->query() to further understand what is happening you can find it in /wp-includes/wp-db.php at lines 1057-1153 in v3.01.
Hope this helps.
-Mike
P.S. You might want to check out StackOverflow's sister site WordPress Answers next time you need help with WordPress. Lots of WordPress enthusiasts are on hand over there to answer your WordPress questions.
Related
I have function that update post content automatically based from custom field like this:
function update_content(){
$mycustomfield = get_post_meta( get_the_ID(), 'customfield', true);
$post = array();
$post['ID'] = get_the_ID();
$post['post_content' ] = $mycustomfield ;
$post['post_title' ] = $mycustomfield ;
// Update the post into the database
wp_update_post( $post );
We update only custom field to make content. For now, we launch this function manually on save_post hook, but the articles are so many and we need now a cron to automate this function: process 4 posts every hour until all posts are completed, then start over.
How to make this, thank you
WordPress actually has a built-in psuedo cron system called WP Cron. It doesn't function exactly like a proper server cron, but can perform a similar function in many cases. You can find documentation on it here:
https://developer.wordpress.org/plugins/cron/#:~:text=WP%2DCron%20is%20how%20WordPress,post%2C%20utilize%20WP%2DCron.&text=WP%2DCron%20works%20by%20checking,what%20needs%20to%20be%20run.
However thinking about your use case and looking at your function above, I'm wondering what the purpose of your cron is? It looks from that function like all you're doing is taking some content already in your database and putting it somewhere else. Why? Why not simply display your custom field in the correct spot? Or better yet, use the fields as intended?
Even if that is necessary - maybe I don't understand fully from the example above - I think your initial inclination to run this on save_post is much more correct. Unless there's some information external to your site that's changing, the only time these values will change is when you save the post. So what is the purpose of running it on a schedule?
I have seen almost all links but still I am unable to solve my problem.
I am getting $wpdb as null.
I am checking it like this. I am doing this in single.php file
echo "<pre>";print_r($wpdb);"</pre>";
I have checked about following files. That all are loaded.
wp-config.php
wp-load.php
wp-includes/wp-db.php
Please help me.
EDIT
I want to execute custom query like this.
$entries = $wpdb->get_results( $wpdb->prepare( "SELECT forms.form_title, entries. *
FROM wp_visual_form_builder_forms AS forms
INNER JOIN wp_visual_form_builder_entries AS entries ON entries.form_id = forms.form_id" ) );
this is not working.
If you read the documentation, you will notice this passage:
Always use the global $wpdb variable. (Remember to globalize $wpdb before using it in any custom functions.)
It's not very clear but I think that means you cannot use $wpdb outside of a function. What I recommend you do is create a function in your theme's functions.php file, and call that function from the single.php file.
I am trying to develop a custom plugin in word-press. I have created a form which calls the following script:
<?php
global $wpdb;
$sql="insert into wp_wbp_unpublished values(null,'".$_POST['bibkey']."',
'".$_POST['author']."','".$_POST['title']."','".$_POST['date']."','".$_POST['note']."',
'".$_POST['keywords']."','nothing');";
echo $sql;
//$wpdb->show_errors();
$wpdb->insert("wp_wbp_unpublished",array('uid'=>null,'pid'=>$_POST['bibkey'],
'author'=>$_POST['author'],'title'=>$_POST['title'],'year'=>$_POST['date'],
'note'=>$_POST['note'],'keyword'=> $_POST['keywords'],'abstract'=>"null"));
$wpdb->query($sql);
//$wpdb->print_error();
?>
As you can see, I have tried two different ways to insert data into my db but nothing worked.
The sql string is correct, I have checked it. But something wrong with the insert()/ query() commands. Any suggestions of what is wrong?
Honestly, I do not see anything wrong with your code. At the end of the day I always blame Wordpress for the fact that it sucks asshoe. I am having the same issue, except only after the user logs into the index file and tries to make changes to db. Why hasn't anyone answered this question? Wtf
You have to remove semicolon(); in your custom or first insert query
$sql="insert into wp_wbp_unpublished values(null,'".$_POST['bibkey']."',
'".$_POST['author']."','".$_POST['title']."','".$_POST['date']."','".$_POST['note']."',
'".$_POST['keywords']."','nothing');";
And other thing is when you make plugin, then you have to put "upgrade.php" file in you function...
I hope it will work.
I have used the following solution, which seems to be the best:
$wpdb->insert( $table, $data, $format );
For instance:
$wpdb->insert(
$prefix.'wp_wbp_unpublished',
array('bibkey'=>$_POST['bibkey'],'author'=>$author),
array('%s','%s')
);
More information: https://codex.wordpress.org/Class_Reference/wpdb#INSERT_row
Im very new to WordPress. I was going through Smooth Slider WP Plugin and saw
if ( function_exists( 'get_smooth_slider_category' ) ) { get_smooth_slider_category('Uncategorized'); }
This pretty much gives what I wanted, but not quite. This pulls all the content in the category and what Im after is just the image URL.
My question is whats "function_exists" in wordpress? and I checked get_smooth_slider_category in functions.php file but couldnt find any. Can someone please explain how function_exists works?
function_exists is a PHP function, not limited to WordPress.
From the manual "Checks the list of defined functions, both built-in (internal) and user-defined, for function_name."
It returns true or false on whether or not the function exists. So you can either create a new function before it that does something slightly different, or prevent an error if it doesn't exist (normally because the required file hasn't been included).
This is a PHP function that checks if the passed in name matches any defined functions (either internal, or user defined).
It is a way to check if a function is "available" before calling it.
Good morning all.
I'm having some issues while trying to make the function "field_file_load" work in a php script I've done to process an AJAX call.
I've read about bootstrapping drupal core elements inside, but it doesn't seem to work.
So far I've succesfully populated a Select Box using the data from another Select Box, making an AJAX call to this php file (which is in the drupal directory folder, in a theme to be precise)
<?php
$var = $_GET['q'];
$con = mysql_connect('*******', '******', '********');
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("drupal", $con);
$sql="SELECT DISTINCT xc.field_brand_value FROM node
INNER JOIN term_node AS tn ON node.vid = tn.vid
LEFT JOIN content_type_extra_content AS xc ON node.vid = xc.vid
WHERE tn.tid IN (SELECT th.tid FROM term_hierarchy AS th WHERE th.parent = '149')
AND xc.field_location_value = '".$var."'";
$result = mysql_query($sql);
echo(' <select name="brand" id="brand">
<option value="default" selected>Select a brand</option>
');
while($row = mysql_fetch_array($result))
{
echo('<option value="'.$row['field_brand_value'].'">'.$row['field_brand_value'].'</option>');
}
echo('</select>');
mysql_close($con);
?>
And this is working like a charm because all I have to do is connecting to the drupal db and fetch the desired values.
The problem arises when I want to fetch the url of some pictures (with a query that uses values from the first and second dropdown) and use the "file_field_load" to load the url of the given picture.
I get (obviously) a "call to undefined function" error.
So I tried bootstrapping drupal.
But it doesn't work anyway.
/** bootstrap Drupal **/
chdir("/path/to/drupal/site/htdocs");
require_once './includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
Since I don't have full access to the server where the site is hosted, assuming that drupal is convenientrly installed in the root, how can I figure out the path to drupal site htdocs ?
Moreover, does calling a full bootstrap (instead of just the needed part) can cause some problems?
So, to be brief:
1] how can I call a drupal function (in this case which comes from the filefiled module) in a non-drupal php script which resides however in the drupal directory?
2] Which is the correct way of bootstrapping?
3] Do I need to connect to the db (like in the previous working example) IN ADDITION to bootstrapping?
Or, finally. there's a different, speedier way you know how to do what I need to do?
Thanks in advance for any reply.
Hmm that's weird. If the FileField module is enabled, the function should be available. So maybe FileField is not actually enabled?
If that's the case you're gonna have to manually add the file that contains the function definition, which is the field_file.inc file in the module's directory, so you'd add that dependency to your bootstrapping code:
<?php
/** bootstrap Drupal **/
chdir("/path/to/drupal/site/htdocs");
require_once './includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
module_load_include('filefield', 'inc', 'field_file');
AFAIK what you're doing for bootstrapping Drupal from an outside script is the "correct" way.
Now, I'm not sure if, on a big picture level, whatever you're trying to do is a good idea at all... That is: You're making a little nonDrupal script which:
manually connects to the Drupal database with plain mysql functions instead of Drupal's DB API functions, in order to
fetch CCK information using a query that's 100% vulnerable to SQL injection, and
all of this put in a theme directory no less!
So you might want to rethink your angle of attack here, you know?. Maybe making a custom module for this.
But if you just have to do things this way (for reasons I can't think of), then at least use db_query so you don't have to do the whole mysql_connect() stuff, and do something like
<?php
db_query("YOUR BIG QUERY HERE... xc.field_location_value = '%s'", $var);
...for at least some degree of security.
I would also recommend that you browse the involved modules a bit (FileField, etc) to see if they have APIs (or at least some internal functions) that might return what you're trying to get through plain DB querying.