This must be an easy one but I can't find documentation for it online.
I'm trying to use the l() function in Drupal to create a dynamic link. What's the syntax?
At the moment I have:
l('Destination',"path/$user->uid/category")
which points to:
path/%2Fcategory
first of all, if you're working within a function, you'll need to get access to the global user object.
Secondly, if the user is anonymous/not logged in, the $user->uid might not be set or be 0.
lastly to prevent errors, it is common to concatenate variables together with strings
global $user;
if ($user->uid)
{
l('Destination', 'path/'.$user->uid.'/category')
}
l() is correcting your URL to path/%2Fcategory because it's trying to make a workable link from the string path//category.
Your string is path//category because $user->uid has no value. It has no value because either you haven't pulled up a user object from global $user or user_load(), or your user is anonymous.
I would suggest putting checking the value of $user before calling l(), for example:
global $user; // or $user = user_load($foo);
if ($user) {
l('Destination', 'path/'.$user->uid.'/category');
} else {
l('Destination', 'path/you-are-not-logged-in');
}
Try concatenating the strings instead.
l('Destination',"path/".$user->uid."/category")
as for the documentation, here it is: http://api.drupal.org/api/function/l/4.7
l($text,
$path,
$attributes = array(),
$query = NULL,
$fragment = NULL,
$absolute = FALSE,
$html = FALSE)
The documentation for the l() function is located at:
http://api.drupal.org/api/function/l/6
Other stuff has been said yet by others :)
Related
I have an issue with triming a field before it is saved. I wanted to use substr(), or regex() with preg_match(). I have built a Drupal 7 module, but it can't work at all. I have tried using the trim plugin in feeds tamper module, but it doesn't seem to work. The data I am using is from a feed from Google Alerts. I have posted this issue here.
This is what I have done so far, and I know my regular expression is wrong; I was trying to get it do anything, just to see if I could get it to work, but I am pretty lost on how to add this type of function to a Drupal module.
function sub_node_save() {
$url = $node->field_web_screenhot['und'][0]['url'];
$url = preg_match('~^(http|ftp)(s)?\:\/\/((([a-z0-9\-]*)(\.))+[a-z0-9]*)($|/.*$)~i',$url );
$node->field_web_screenhot['und'][0]['url'] =$url;
return ;
}
I used the Devel module to get the field.
If there's an easy way to use substr(), I would consider that or something else.
Basically, I just want to take the Google redirect off the URL, so it is just the basic URL to the web site.
Depending on your question and later comments, I'd suggesting using node_presave hook (http://api.drupal.org/api/drupal/modules!node!node.api.php/function/hook_node_presave/7) for this.
It's called before both insert (new) and update ops so you will need extra validations to prevent it from executing on node updates if you want.
<?php
function MYMODULE_node_presave($node) {
// check if nodetype is "mytype"
if ($node->type == 'mytype'){
// PHP's parse_url to get params set to an array.
$parts = parse_url($node->field_web_screenhot['und'][0]['url']);
// Now we explode the params by "&" to get the URL.
$queryParts = explode('&', $parts['query']);
$params = array();
foreach ($queryParts as $param) {
$item = explode('=', $param);
$params[$item[0]] = $item[1];
}
//valid_url validates the URL (duh!), urldecode() makes the URL an actual one with fixing "//" in http, q is from the URL you provided.
if (valid_url(urldecode($parms['q']))){
$node->field_web_screenhot['und'][0]['url'] = urldecode($parms['q']);
}
}
}
Would appreciate it, if anyone can let me know how we can set the global $user variable, so that we don't have to keep re-declaring it in each function, to access its contents. How can we declare it so that all the functions in a module can use it?
The type of global you're looking for (available always, in every scope) is called a superglobal in PHP. You cannot declare new superglobals, but you can access all globals directly because they are part of the $GLOBAL superglobal. In other words, you can use $GLOBALS['user'] to access the $user global directly.
See also create superglobal variables in php? for more info and alternative methods.
You can't...that's how globals work in PHP. If you want to import the global variable into your local function then you have to use the global keyword, there's no way round it. This is a 'feature' of the PHP language, it has nothing to do with Drupal.
An alternative method might be to implement a helper function:
function get_current_user() {
global $user;
return $user;
}
And call it like this:
$user = &get_current_user();
In your function if you want to use the $user variable, you just required to use/instantiate 'global' keyword before $user it. So that you can access all the data for that current user of the website.
For example
function myGenericFunc(){
global $user;
$user_id = $user->uid;
}
Note that you cannot redeclare it.
I hope it helps.
I'm doing this to render a node and returning the output to an AJAX call and displaying a node inline on a page:
$node = node_load($nid);
$node_view = node_view($node);
echo drupal_render($node_view);
I need to be able to do the same things for a user profile...is it similar?
It's pretty similar, you can use the following functions:
$account = user_load($uid);
$account_view = user_view($account);
echo drupal_render($account_view);
EDIT
I changed the variable name to use $account instead of $user, just to eliminate the possibility of overwriting the global $user variable.
The Entity API module provide a generic function to render any entity: entity_view() that can also be used. For a user entity this should produce the same results than user_view().
$account = user_load($uid);
$account_view = entity_view('user', $account);
echo drupal_render($account_view);
I've created a simple module for displaying a flash game in a custom block by overwriting game_block_view() and game_block_info() in the sites/default/modules/game.module and it works ok.
I need however to pass user avatar and also gender and city (I've added the 2 mandatory fields to the registration form) through the FlashVars-parameter to the flash game in my block.
So I'm trying to overload the hook_user_load, because I suppose that this is the method where you add properties to the $user object after it has been initiated from the database (this probably happens when the user logins or alters his/her profile data?):
function game_user_load($users) {
global $user;
$uid = $user->uid;
$result = db_query('select filename from {file_managed} where uid=:uid', array(':uid' => array($uid)));
$avatar = $result->fetchField();
$users[$uid]->avatar = $avatar;
drupal_set_message("<pre>$uid: $avatar</pre>\n");
print_r($users);
}
Unfortunately I see no output produced by the last 2 lines above in the web page
What am I doing wrong?
Thank you!
Alex
The global user object does not go through hook_user_load(), see http://api.drupal.org/api/drupal/includes--session.inc/function/_drupal_session_read/7. Don't ask me why, that's just the way it is :)
When using user_load(), any added fields will automatically be loaded, you don't need custom code for that. You just need to know how to access them, which is a bit complicated.
Something like this should work:
global $user;
// $account is now a fully loaded user object.
$account = user_load($user->uid);
// Your field name is probably 'field_avatar'.
if ($avatar = field_get_items('user', $account, 'field_avatar')) {
dpm($avatar); // only works with devel.module, strongly suggested!
}
I'm trying to get the avatar (profile picture) located in the $profile array to appear in a BLOCK. The variable $profile is not accessible from blocks. It's scope is only in that actual user-profile.tpl.php file. So... does anybody know how I can execute something like this:
print $profile[user_picture];
in a drupal BLOCK?
I figured i might as well post it here as well. See my second comment on the first thread in this discussion. Below is my code I used with INSERT VIEW to get what I wanted:
<?php
$profileUser = "";
if (arg(0) == "user") {
$profileUser = arg(1);
}
// removed some other checks i do to populate $profileUser
?>
[view:VIEWED_PROFILE_AVATAR=block=<?php print $profileUser; ?>]
I hope that helps someone.
You can try using the following code in a new block (admin/build/block/add):
<?php
global $user;
$output = theme_image($user->picture, $alt = 'user pic', $title = 'user pic');
print $output;
This gives you access to the global $user variable and then you can use the picture property to get the URL for the current users profile picture.