[wp-hackers] array_push on update_user_meta
Gregory Lancaster
greglancaster71 at gmail.com
Thu Oct 31 21:28:16 UTC 2013
did I really spend a couple hours reading for a solution over the word
true. Thank you JD. Real quick, you said:
When you call in_array() it is checking if the user ID (say, 3 ) is in the
outer array. But it isn’t, the only thing in it is another array. When you
call get_user_meta() with the third parameter set to true, the returned
value won’t be wrapped in the outer array like that, so it will work.
Why are arrays stored so many tiers deep like that? Is this a wordpress
only thing, or is this normal? It looks like everytime a persons ID is
added, another instance of array(array(array( is added. What is the
reasoning behind this? Or do I understand it incorrectly?
On Thu, Oct 31, 2013 at 2:22 PM, J.D. Grimes <jdg at codesymphony.co> wrote:
> Ah.. We forgot to add true to the gat_user_meta() in
> my_add_friend_action(). Add that and you should be good to go.
>
> On Oct 31, 2013, at 5:18 PM, Gregory Lancaster <greglancaster71 at gmail.com>
> wrote:
>
> > Sure;
> >
> > add_action('wp_ajax_my_add_friend_action', 'my_add_friend_action');
> > add_action('wp_ajax_nopriv_my_add_friend_action',
> 'my_add_friend_action');
> > function my_add_friend_action() {
> > global $wpdb;
> > $profileID = $_POST['profileID'];
> > $userID = $_POST['userID'];
> >
> > $chkMetaValue = get_user_meta($userID,"friends");
> > if ( ! is_array($chkMetaValue) )
> > $chkMetaValue = array();
> > $chkMetaValue[] = $profileID;
> >
> > // activity_tracker($current_user, 'added_friend', 'prof');
> > update_user_meta( $userID, 'friends', $chkMetaValue );
> > $response = array( 'success' => true );
> > wp_send_json_success($response);
> > die();
> > }
> >
> > function follow_status($author_id) {
> > global $wpdb, $current_user;
> > get_currentuserinfo();
> >
> > //authorID is the userID of the profile owner
> >
> > $active_user = $current_user->ID;
> > $active_user_friends = get_user_meta($active_user, 'friends', true);
> >
> > if (in_array($author_id, $active_user_friends)) {
> > $follow_status = "<button id='remove_friend'>Remove Friend</button>";
> > } else {
> > $follow_status = "<button id='add_friend'>Add Friend</button>";
> > }
> >
> > return $follow_status;
> > }
> >
> > and calling in the profile page with:
> >
> > echo follow_status($author_id);
> >
> >
> >
> > On Thu, Oct 31, 2013 at 2:16 PM, J.D. Grimes <jdg at codesymphony.co>
> wrote:
> >
> >> Could you post your code again? Somewhere you are still getting the
> value
> >> wrapped in an extra array.
> >>
> >>
> >> On Oct 31, 2013, at 5:08 PM, Gregory Lancaster <
> greglancaster71 at gmail.com>
> >> wrote:
> >>
> >>> No I must have screwed something up man, it only shows the last value.
> I
> >>> searched for awhile before responding here, and I see some people say
> >>> in_array adds a line between items and sometimes other folks needed to
> >>> strip those. But I have no idea if thats whats going on here. It all
> >>> looks like it should function. :-/ Maybe I need to get off the
> computer
> >>> for awhile.
> >>>
> >>> I var_dump using the function you shared, and this is what the friend
> >> array
> >>> looks like from there:
> >>>
> >>> array(2) {\n [0]=>\n array(2) {\n [0]=>\n array(2) {\n
> >> [0]=>\n
> >>> array(2) {\n [0]=>\n array(2) {\n [0]=>\n
> >>> array(1) {\n [0]=>\n string(1) "1"\n
> }\n
> >>> [1]=>\n string(1) "9"\n }\n [1]=>\n
> >>> string(2) "13"\n }\n [1]=>\n string(2) "16"\n }\n
> >>> [1]=>\n string(2) "13"\n }\n [1]=>\n string(1) "3"\n}\n
> >>>
> >>> I dont know if that assists in debugging.
> >>>
> >>>
> >>>
> >>> On Thu, Oct 31, 2013 at 1:52 PM, J.D. Grimes <jdg at codesymphony.co>
> >> wrote:
> >>>
> >>>> OK, you need to just delete that meta row and start over. It is messed
> >> up
> >>>> from before. Do that and see if it works.
> >>>>
> >>>> On Oct 31, 2013, at 4:49 PM, Gregory Lancaster <
> >> greglancaster71 at gmail.com>
> >>>> wrote:
> >>>>
> >>>>> I have it set to true:
> >>>>>
> >>>>> $active_user_friends = get_user_meta($active_user, 'friends', true);
> >>>>> But the issue is that it only shows the "friended" code for the last
> >>>> user I
> >>>>> added. If I click add on one profile, and then to a second, the
> first
> >> no
> >>>>> longer shows friend added. Even if I have clearly added several to
> the
> >>>>> array:
> >>>>>
> >>>>>
> >>>>
> >>
> a:2:{i:0;a:2:{i:0;a:2:{i:0;a:2:{i:0;a:2:{i:0;a:2:{i:0;s:0:"";i:1;s:2:"16";}i:1;s:2:"12";}i:1;s:2:"13";}i:1;s:2:"12";}i:1;s:1:"3";}i:1;s:2:"13";}
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>> On Thu, Oct 31, 2013 at 1:40 PM, J.D. Grimes <jdg at codesymphony.co>
> >>>> wrote:
> >>>>>
> >>>>>> No, you don’t need to use unserialize, that is all done
> automatically
> >> by
> >>>>>> the WordPress functions.
> >>>>>>
> >>>>>> In the code you posted you still aren’t calling get_user_meta() with
> >> the
> >>>>>> third parameter set to true. You need to do that. Right now the
> array
> >>>> it is
> >>>>>> returning looks something like this:
> >>>>>>
> >>>>>> array(
> >>>>>> 0 => array( 3, 45, 6, 33 )
> >>>>>> )
> >>>>>>
> >>>>>> When you call in_array() it is checking if the user ID (say, 3 ) is
> in
> >>>> the
> >>>>>> outer array. But it isn’t, the only thing in it is another array.
> When
> >>>> you
> >>>>>> call get_user_meta() with the third parameter set to true, the
> >> returned
> >>>>>> value won’t be wrapped in the outer array like that, so it will
> work.
> >>>>>>
> >>>>>>
> >>>>>> On Oct 31, 2013, at 4:30 PM, Gregory Lancaster <
> >>>> greglancaster71 at gmail.com>
> >>>>>> wrote:
> >>>>>>
> >>>>>>> Ah I see. Thank you for explaining JD. It sounds like maybe the
> >> easier
> >>>>>>> option is to just create a separate table to store the friends list
> >> in.
> >>>>>>> Trying to work with user_meta this way seems like a bad idea.
> >>>>>>>
> >>>>>>> Quick question, should I be using unserialize to check the array
> >> values
> >>>>>>> using in_array? Because right now this code isnt working. Thats
> the
> >>>>>> only
> >>>>>>> thing that seems to be left out - but when I tried using
> $unserialize
> >>>>>> like
> >>>>>>> this:
> >>>>>>>
> >>>>>>> $unserialize = unserialize($active_user_friends);
> >>>>>>> if (in_array($author_id, $unserialize)) {
> >>>>>>>
> >>>>>>> it says this:
> >>>>>>>
> >>>>>>>
> >>>>>>> *Warning*: unserialize() expects parameter 1 to be string, array
> >> given
> >>>>>>> and
> >>>>>>> *Warning*: in_array() expects parameter 2 to be array, boolean
> given
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> --------
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> add_action('wp_ajax_my_add_friend_action', 'my_add_friend_action');
> >>>>>>> add_action('wp_ajax_nopriv_my_add_friend_action',
> >>>>>> 'my_add_friend_action');
> >>>>>>> function my_add_friend_action() {
> >>>>>>> global $wpdb;
> >>>>>>> $profileID = $_POST['profileID'];
> >>>>>>> $userID = $_POST['userID'];
> >>>>>>>
> >>>>>>> $chkMetaValue = get_user_meta($userID,"friends");
> >>>>>>> if ( ! is_array($chkMetaValue) )
> >>>>>>> $chkMetaValue = array();
> >>>>>>> $chkMetaValue[] = $profileID;
> >>>>>>>
> >>>>>>> // activity_tracker($current_user, 'added_friend', 'prof');
> >>>>>>> update_user_meta( $userID, 'friends', $chkMetaValue );
> >>>>>>> $response = array( 'success' => true );
> >>>>>>> wp_send_json_success($response);
> >>>>>>>
> >>>>>>> die();
> >>>>>>> }
> >>>>>>>
> >>>>>>>
> >>>>>>> function friend_status($author_id) {
> >>>>>>> global $wpdb, $current_user;
> >>>>>>> get_currentuserinfo();
> >>>>>>>
> >>>>>>> //authorID is the userID of the profile owner
> >>>>>>>
> >>>>>>> $active_user = $current_user->ID;
> >>>>>>> $active_user_friends = get_user_meta($active_user, 'friends');
> >>>>>>>
> >>>>>>> if (in_array($author_id, $active_user_friends, true)) {
> >>>>>>> $friend_status = "<button id='remove_friend'>Remove
> Friend</button>";
> >>>>>>> } else {
> >>>>>>> $friend_status = "<button id='add_friend'>Add Friend</button>";
> >>>>>>> }
> >>>>>>>
> >>>>>>> return $friend_status;
> >>>>>>> }
> >>>>>>>
> >>>>>>>
> >>>>>>> That is basically the code I am using to insert the users id into
> >> their
> >>>>>>> user_meta table.
> >>>>>>>
> >>>>>>>
> >>>>>>> On Thu, Oct 31, 2013 at 1:08 PM, J.D. Grimes <jdg at codesymphony.co>
> >>>>>> wrote:
> >>>>>>>
> >>>>>>>> There are two ways to use the *_meta functions. The way it looks
> >> like
> >>>>>> you
> >>>>>>>> are doing it is that each user has a single entry in the usermeta
> >>>> table,
> >>>>>>>> with the key ‘friends’. The value for this meta key will be stored
> >> in
> >>>>>> the
> >>>>>>>> database as a serialized array, and when it is pulled out (by
> >>>>>>>> get_user_meta()) it gets unserialized into a PHP array.
> >>>>>>>>
> >>>>>>>> Alternative is this: Each user has multiple ‘friend’ meta key rows
> >> in
> >>>>>> the
> >>>>>>>> usermeta table, each one’s meta_value the ID of a single user that
> >> the
> >>>>>> user
> >>>>>>>> has friended.
> >>>>>>>>
> >>>>>>>> The benefit of the second option is that the values may be easier
> to
> >>>>>>>> search. Much easier. But that may not be important to you right
> now.
> >>>>>> (But
> >>>>>>>> then that could change later…) What if you want to show a list of
> >>>> users
> >>>>>> who
> >>>>>>>> have friended a user? You will be able to do that easily with
> this.
> >>>> With
> >>>>>>>> the first option, it is possible, but more complex and probably
> >> harder
> >>>>>> on
> >>>>>>>> the DB.
> >>>>>>>>
> >>>>>>>> The downside is that there are many more rows in usermeta table.
> >>>>>>>>
> >>>>>>>> So each of these functions let you target a single row (as in
> first
> >>>>>> case)
> >>>>>>>> or all rows with a key (as in the later case). Whichever way you
> go,
> >>>> you
> >>>>>>>> just need to be consistent through all of the code, obviously.
> >>>>>>>>
> >>>>>>>> -J.D.
> >>>>>>>>
> >>>>>>>> On Oct 31, 2013, at 3:30 PM, Gregory Lancaster <
> >>>>>> greglancaster71 at gmail.com>
> >>>>>>>> wrote:
> >>>>>>>>
> >>>>>>>>> What would be the benefit of storing the friends in separate
> rows?
> >> I
> >>>>>> did
> >>>>>>>>> not know that was an option, but don't see any clear advantages
> >>>> either.
> >>>>>>>>> Also, I did just search the codex but dont see anything about
> >> unique
> >>>>>>>> rows.
> >>>>>>>>> (I checked get_user_meta, delete_user_meta, update_user_meta. )
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> On Thu, Oct 31, 2013 at 12:24 PM, J.D. Grimes <
> jdg at codesymphony.co
> >>>
> >>>>>>>> wrote:
> >>>>>>>>>
> >>>>>>>>>> Yes, when you call get_user_meta() you need to set the third
> >>>> parameter
> >>>>>>>>>> ($single) to true:
> >>>>>>>>>>
> >>>>>>>>>> $active_user_friends = get_user_meta( $active_user, ‘friends’,
> >> true
> >>>> );
> >>>>>>>>>>
> >>>>>>>>>> Otherwise it will return a nested array. Also, just FYI,
> >>>> alternatively
> >>>>>>>> you
> >>>>>>>>>> could leave the get_user_meta() call the way it is, and change
> it
> >> so
> >>>>>>>> that
> >>>>>>>>>> each friend is stored in a separate meta row (but with the same
> >> meta
> >>>>>>>> key -
> >>>>>>>>>> have a look at the *_user_meta functions on the codex).
> >>>>>>>>>>
> >>>>>>>>>> -J.D.
> >>>>>>>>>>
> >>>>>>>>>> On Oct 31, 2013, at 3:14 PM, Gregory Lancaster <
> >>>>>>>> greglancaster71 at gmail.com>
> >>>>>>>>>> wrote:
> >>>>>>>>>>
> >>>>>>>>>>> I thought so. One more question if you dont mind helping;
> >>>>>>>>>>>
> >>>>>>>>>>> This is the function I wrote to determine what button to show
> on
> >>>> page
> >>>>>>>>>> load.
> >>>>>>>>>>> But regardless if someone has been friended or not, it shows
> the
> >>>> add
> >>>>>>>>>>> friend option. Is something wrong with this?
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>> function friend_status($author_id) {
> >>>>>>>>>>> global $wpdb, $current_user;
> >>>>>>>>>>> get_currentuserinfo();
> >>>>>>>>>>>
> >>>>>>>>>>> //authorID is the userID of the profile owner
> >>>>>>>>>>>
> >>>>>>>>>>> $active_user = $current_user->ID;
> >>>>>>>>>>> $active_user_friends = get_user_meta($active_user, 'friends');
> >>>>>>>>>>>
> >>>>>>>>>>> if (in_array($author_id, $active_user_friends)) {
> >>>>>>>>>>> $friend_status = "<button id='remove_friend'>Remove
> >>>> Friend</button>";
> >>>>>>>>>>> } else {
> >>>>>>>>>>> $friend_status = "<button id='add_friend'>Add Friend</button>";
> >>>>>>>>>>> }
> >>>>>>>>>>>
> >>>>>>>>>>> return $friend_status;
> >>>>>>>>>>> }
> >>>>>>>>>>>
> >>>>>>>>>>> Then on page: echo $friend_status;
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>> On Thu, Oct 31, 2013 at 11:53 AM, J.D. Grimes <
> >> jdg at codesymphony.co
> >>>>>
> >>>>>>>>>> wrote:
> >>>>>>>>>>>
> >>>>>>>>>>>> Yes, I would write a separate function for removal, and hook
> it
> >>>> to a
> >>>>>>>>>>>> different AJAX action for removal.
> >>>>>>>>>>>>
> >>>>>>>>>>>> On Oct 31, 2013, at 2:48 PM, Gregory Lancaster <
> >>>>>>>>>> greglancaster71 at gmail.com>
> >>>>>>>>>>>> wrote:
> >>>>>>>>>>>>
> >>>>>>>>>>>>> That works easier :) Once someone is friended I have it set
> so
> >>>> an
> >>>>>>>>>>>> unfriend
> >>>>>>>>>>>>> button replaces the add friend button via ajax. Is it
> >> necessary
> >>>> to
> >>>>>>>>>> write
> >>>>>>>>>>>>> another function for deleting a person? Not sure exactly how
> >> to
> >>>>>> make
> >>>>>>>>>> the
> >>>>>>>>>>>>> new button function since the data being sent is not attached
> >> to
> >>>>>> the
> >>>>>>>>>>>> button
> >>>>>>>>>>>>> in any way. maybe I could add a value to the button that
> says
> >>>>>> remove
> >>>>>>>>>> or
> >>>>>>>>>>>>> add, which would be passed to the function and determine what
> >>>>>> action
> >>>>>>>> to
> >>>>>>>>>>>>> take?
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>
> >>>>>>>>>>>>> On Thu, Oct 31, 2013 at 11:32 AM, J.D. Grimes <
> >>>> jdg at codesymphony.co
> >>>>>>>
> >>>>>>>>>>>> wrote:
> >>>>>>>>>>>>>
> >>>>>>>>>>>>>> I would do this:
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>> $profileID = $_POST['profileID'];
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>> $chkMetaValue = get_user_meta($userID,"friends");
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>> if ( ! is_array($chkMetaValue) )
> >>>>>>>>>>>>>> $chkMetaValue = array();
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>> $chkMetaValue[] = $profileID; // or use array_push()
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>> update_user_meta( $userID, 'friends', $chkMetaValue );
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>> -J.D.
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>> On Oct 31, 2013, at 1:32 PM, BenderisGreat <
> >>>>>>>> greglancaster71 at gmail.com
> >>>>>>>>>>>
> >>>>>>>>>>>>>> wrote:
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>>>> I am not sure exactly how this would work because I start
> >> with
> >>>> an
> >>>>>>>>>> empty
> >>>>>>>>>>>>>>> meta_value field. I dont think I can use array_push if
> there
> >>>> is
> >>>>>>>> not
> >>>>>>>>>> at
> >>>>>>>>>>>>>>> least one value in the field, correct?
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>> So maybe something like this:
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>> $profileID = $_POST['profileID'];
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>> $chkMetaValue = get_user_meta($userID,"friends");
> >>>>>>>>>>>>>>> if (!empty($chkMetaValue))
> >>>>>>>>>>>>>>> {
> >>>>>>>>>>>>>>> array_push($profileID);
> >>>>>>>>>>>>>>> } else {
> >>>>>>>>>>>>>>> $profileID;
> >>>>>>>>>>>>>>> }
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>> update_user_meta( $userID, 'friends', $chkMetaValue );
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>> Is that right?
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>>
> >>>>>>>>>>>>>>> --
> >>>>>>>>>>>>>>> View this message in context:
> >>>>>>>>>>>>>>
> >>>>>>>>>>>>
> >>>>>>>>>>
> >>>>>>>>
> >>>>>>
> >>>>
> >>
> http://wordpress-hackers.1065353.n5.nabble.com/array-push-on-update-user-meta-tp42688.html
> >>>>>>>>>>>>>>> Sent from the Wordpress Hackers mailing list archive at
> >>>>>> Nabble.com.
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