I have a BlogPost model that has a belongsToMany relationship called images, this relationship uses a link table to associate the blog post id with the image id.
When pulling in the data for a blog post, the images property looks like this:
[images] => Array
(
[0] => Array
(
[id] => 8304
[original] => /img/blog/2017/5/wifiradio_original_59089cae673db.png
[large] => /img/blog/2017/5/wifiradio_large_59089cae673db.jpg
[medium] => /img/blog/2017/5/wifiradio_medium_59089cae673db.jpg
[small] => /img/blog/2017/5/wifiradio_small_59089cae673db.jpg
[name] => wifiradio.png
[alt] => wifiradio.png
[created_at] => 2017-05-02 14:50:22
[updated_at] => 2017-05-02 14:50:22
[pivot] => Array
(
[blog_post_id] => 47749
[image_id] => 8304
[id] => 136949
[type] => featured
)
)
)
)
The array key is not useful as the numeric value, i would like the array key to be the value of pivot->type.
Laravels keyBy method almost does what I need but I can not get it to work directly on the data returned.
Is it possible to use keyBy from within the model so that data is always returned in a useable format?
I solved this by formatting the array within the controller.
Here's the function I created if anyone has a similair problem:
public function formatPosts($posts){
foreach($posts as $post){
$images = collect($post->images);
unset($post->images);
$post->images = $images->keyBy('pivot.type');
}
return $posts;
}
Related
I'm having trouble with putting this question to words so ill just use a simple example, hope the title sortof got my problem across.
I'm creating a blog site where I can create blogposts and people can post comments. This is all saved in JSON except for login details which are saved in MySQL.
Now saving the blogposts go fine but I'm now trying to save comments.
Lets say the blogpost array looks like this:
Array
(
[0] => Array
(
[id] => 0
[title] => first blogpost
[content] => blogpost text
)
[1] => Array
(
[id] => 1
[title] => second blogpost
[content] => blogpost 2 text
)
)
Now someone writes a comment on 'second blogpost', I save it into an array like this(user taken from MySQL):
Array
(
[user] => myusername
[comment] => first post was better!
)
Now I want to merge them like this:
Array
(
[0] => Array
(
[id] => 0
[title] => first blogpost
[content] => blogpost text
)
[1] => Array
(
[id] => 1
[title] => second blogpost
[content] => blogpost 2 text
[comments] => Array
(
[user] => myusername
[comment] => first post was better!
)
)
)
I tried searching for a while and I'd expect this to be somewhere on the site already but I can't find it. I tried a couple variations of array_push and array_merge but it always ended up replacing the relevant blogpost instead of adding onto it.
EDIT: Someone noted the new array can't just float around, I think it's better now.
If you had any related key between posts and comments ( like having post_id in comment array ) that would make more sense to merge/put them.
I assume that's your blogpost
Array
(
[0] => Array
(
[id] => 0
[title] => first blogpost
[content] => blogpost text
)
[1] => Array
(
[id] => 1
[title] => second blogpost
[content] => blogpost 2 text
)
)
And your comments should be like:
Array
(
[user] => myusername
[comment] => first post was better!
[post_id] => 1
)
That way, you would be able to find the matched blogpost.
But, outside of your data structure, here is an example to merge an item into an element of an array of array.
A nested loop example.
foreach($posts as &$post){
foreach($comments as $comment){
if($post['id'] == $comment['post_id']){
$post['comments'][] = $comment;
}
}
}
the key here is sending each reference of the element into loop by &$post and then just manipulate them in loop.
Working with indexed arrays. (Like you already have index names as post_id and a comments index as an empty array)
foreach($comments as $comment){
$posts[$comment['post_id']]['comments'][] = $comment;
}
When the blogpost is updated, I assume you can get the id of that blogpost.
Then you can check if your data structure already has a key "comments". If it does not, add the key and create an array containing the comment and the user as the first array.
If it already exists, add a new array with the user and the comment so that there can be multiple comments for each blogpost.
For example using array_map:
$blogPosts = array_map(function ($blogPost) use ($blogPostId, $comment) {
if ($blogPost["id"] === $blogPostId) {
isset($blogPost["comments"]) ? $blogPost["comments"][] = $comment : $blogPost["comments"] = [$comment];
return $blogPost;
}
return $blogPost;
}, $blogPosts);
Php demo
So I fixed it after a bit of thinking
This is the final structure:
Array
(
[0] => Array
(
[id] => 0
[title] => 1st post
[content] => 1st post works!
[date] => 21-01-2019
[comments] => Array
(
[0] => Array
(
[user] => Me
[comment] => hey 1
[date] => 12:02 21-01-2019
)
[1] => Array
(
[user] => Me
[comment] => hey 2
[date] => 12:03 21-01-2019
)
)
)
)
I added a timestamp because of a suggestion here. It's also a simplified version of what I actually use, I tried adding many more comments and on multiple posts which both work.
This is the code, I should mention the ID is in the URL and it's saved as JSON:
$filename = file.json;
$currentArray = json_decode(file_get_contents($filename), true);
$comment = $_POST['comment'];
$username = $_SESSION['username'];
$date = date("H:i d-m-Y");
$id = $_GET['id'];
Pretty straightforward so far, here is how the array is created:
$currentArray[$id]["comments"][] = array (
'user' => $username,
'comment' => $comment,
'date' => $date
);
[$id] saves it to the correct post, ["comments"] saves it to the comments key(or creates it) and the last [] gives every comment a different index inside the ["comments"].
$newJSON = json_encode($currentArray, JSON_PRETTY_PRINT);
file_put_contents($filename, $newJSON);
And lastly encoding it and saving it to JSON.
Hope this helps someone.
I have my code in PHP which is returning this Array of data:
GoCardlessPro\Core\ListResponse Object
(
[records] => Array
(
[0] => GoCardlessPro\Resources\Mandate Object
(
[model_name:protected] => Mandate
[created_at:protected] => 2017-04-01T16:49:09.642Z
[id:protected] => ID001
[links:protected] => stdClass Object
(
[customer_bank_account] => CB001
[creditor] => CR001
[customer] => CU001
)
[metadata:protected] => stdClass Object
(
)
[next_possible_charge_date:protected] => 2017-04-06
[payments_require_approval:protected] =>
[reference:protected] => RE001
[scheme:protected] => bacs
[status:protected] => active
[data:GoCardlessPro\Resources\BaseResource:private] => stdClass Object
(
[id] => 123
[created_at] => 2017-04-01T16:49:09.642Z
[reference] => RE001
[status] => active
[scheme] => bacs
[next_possible_charge_date] => 2017-04-06
[payments_require_approval] =>
[metadata] => stdClass Object
(
)
[links] => stdClass Object
(
[customer_bank_account] => 001
[creditor] => CR001
[customer] => CU001
)
)
[api_response] =>
)
)
)
I want to be able to read the ID of the first item in therecords array.
This data is contained inside a variable called $GC_Mandate;
I have tried these:
echo $GC_Mandate->records->{0}->id;
echo $GC_Mandate->records->0->id;
echo $GC_Mandate->records->[0]->id;
$GC_Mandate = $GC_Mandate->records;
echo $GC_Mandate->{0}->id;
But none will return the data
To get the first record, the syntax you need is $GC_Mandate->records[ 0 ].
However, that object is a GoCardlessPro\Resources\Mandate object and its member id is protected1, so we'd need to know the interface of GoCardlessPro\Resources\Mandate (its public methods1), to know if we can somehow retrieve the value of id.
My guess would be getId(), so the full syntax would become
$GC_Mandate->records[ 0 ]->getId()
But, that's just a guess. You'd have to look into the documentation/class definition of GoCardlessPro\Resources\Mandate, to be sure if you can retrieve id.
Turns out (provided I'm linking to the correct github repository) you can do:
$GC_Mandate->records[ 0 ]->id
since GoCardlessPro\Resources\Mandate extends GoCardlessPro\Resources\BaseResource, which exposes the protected members through GoCardlessPro\Resources\BaseResource::__get()2.
1. visibility in PHP
2. magic methods in PHP
I can't comment so I guess I'll have to post.
You should try to print_r($GC_Mandate); and see what it gives out and then go from there.
Try $GC_Mandate->records[0]->__get('id')
it will return all data ..for perticulat data put this in foreach loop
print_r($GC_Mandate['records']);
At first sorry for my English.
I've got a problem in associative models in CakePHP. When I bind more than two models, for example
$this->Album->bindModel(
array(
'hasMany'=>array(
'Photo'=>array(
'className'=>'Photo'
),
'Album'=>array(
'className'=>'Album'
)
)
)
);
I have:
Array
(
[Album] => Array
(
[id] => 22
[f_name] => Some album
[0] => Array
(
[id] => 19
[f_name] => Another album
[id_parent] => 22
[Photo] => Array
(
....
Is it any way to set a key in parent table? I mean I don't want to have "0" as a key, there can be "Album1", "Album2" and so on.
The problem likely stems from binding a model to itself under the same name. Album hasMany Album probably trips up Cake somewhere. Use a unique name for the association, like Album hasMany SubAlbum.
I have an array which contains status objects, these status objects contain an array of like objects and also contain comment objects
My question is that now I have the objects in my array, how do I pull them back out? This is so I can save them to a db later on.
Thanks for your help
Andy
e.g.
Array
(
[0] => cStatus Object
(
[statusId:cStatus:private] => 123123123
[message:cStatus:private] => powpowpow
[updated_time:cStatus:private] => 2011-01-27T15:52:48+0000
[likes:cStatus:private] => Array
(
)
[comments:cStatus:private] => Comment Object
(
[commentId:Comment:private] => 123123123
[created_time:Comment:private] => 2011-01-30T20:18:50+0000
[message:Comment:private] => Kazam
[name:Comment:private] => Blue man
[createdBy:Comment:private] => 124124
[likes:Comment:private] => Array
(
)
)
)
[1] => cStatus Object
(
[statusId:cStatus:private] => 5125125
[message:cStatus:private] => Gawdam fruit and fibre is tasty :D
[updated_time:cStatus:private] => 2011-01-25T20:21:56+0000
[likes:cStatus:private] => Array
(
[0] => Like Object
(
[likeId:Like:private] => 120409086
[name:Like:private] => Jt
)
)
[comments:cStatus:private] => Array
(
)
)
[2] => cStatus Object
(
[statusId:cStatus:private] => 5215215
[message:cStatus:private] => Dear 2
[updated_time:cStatus:private] => 2011-01-18T08:28:50+0000
[likes:cStatus:private] => Array
(
[0] => Like Object
(
[likeId:Like:private] => 2456
[name:Like:private] => Edw2r
)
[1] => Like Object
(
[likeId:Like:private] => 2452412
[name:Like:private] => aw1
)
[2] => Like Object
(
[likeId:Like:private] => 12412411
[name:Like:private] => wqw
)
)
[comments:cStatus:private] => Array
(
)
)
)
You can use foreach and access properties of individual objects to be saved. I assume you are using getter and setter methods since all your properties are private. Using foreach provides the "as" keyword to make an alias for each individual object instance as the loop executes among them.
<?foreach($obj as $status){
$status_text = $status->getMessage();
//save this to database using your favored method;
$comments = $status->getComments();
//nest the foreach for all the comments to save them as well, if you like
foreach($comments as $comment){
//Save $comment here as well
}
}
?>
This is especially handy for complex nested objects like yours, since public methods and properties can be accessed by the individual iterator for easy action, like saving to the database.
I am playing around with a quotes database relating to a ski trip I run. I am trying to list the quotes, but sort by the person who said the quote, and am struggling to get the paginate helper to let me do this.
I have four relevant tables.
quotes, trips, people and attendances. Attendances is essentially a join table for people and trips.
Relationships are as follows;
Attendance belongsTo Person hasMany Attendance
Attendance belongsTo Trip hasMany Attendance
Attendance hasMany Quote belongs to Attendance
In the QuotesController I use containable to retrieve the fields from Quote, along with the associated Attendance, and the fields from the Trip and Person associated with that Attendance.
function index() {
$this->Quote->recursive = 0;
$this->paginate['Quote'] = array(
'contain' => array('Attendance.Person', 'Attendance.Trip'));
$this->set('quotes', $this->paginate());
}
This seems to work fine, and in the view, I can echo out
foreach ($quotes as $quote) {
echo $quote['Attendance']['Person']['first_name'];
}
without any problem.
What I cannot get to work is accessing/using the same variable as a sort field in paginate
echo $this->Paginator->sort('Name', 'Attendance.Person.first_name');
or
echo $this->Paginator->sort('Location', 'Attendance.Trip.location');
Does not work. It appears to sort by something, but I'm not sure what.
The $quotes array I am passing looks like this;
Array
(
[0] => Array
(
[Quote] => Array
(
[id] => 1
[attendance_id] => 15
[quote_text] => Hello
)
[Attendance] => Array
(
[id] => 15
[person_id] => 2
[trip_id] => 7
[Person] => Array
(
[id] => 2
[first_name] => John
[last_name] => Smith
)
[Trip] => Array
(
[id] => 7
[location] => La Plagne
[year] => 2000
[modified] =>
)
)
)
I would be immensely grateful if someone could suggest how I might be able to sort by the the first_name of the Person associated with the Quote. I suspect my syntax is wrong, but I have not been able to find the answer. Is it not possible to sort by a second level association in this way?
I am pretty much brand new with cakephp so please be gentle.
Thanks very much in advance.
I've had the similar problem awhile back. Not with sort though. Try putting the associated table in another array.
echo $this->Paginator->sort('Name', 'Attendance.Person.first_name');
change to:
echo $this->Paginator->sort('Name', array('Attendance' => 'Person.first_name'));
Hope this helps
i'm also looking for help with this.
so far i've found that you can sort multi level associations in controller's pagination options after using the linkable plugin https://github.com/Terr/linkable.
but it breaks down when you try to sort form the paginator in the view. i'm using a controller for magazine clippings. each clipping belongs to an issue and each issue belongs to a publication.
$this->paginate = array(
"recursive"=>0,
"link"=>array("Issue"=>array("Publication")),
"order"=>array("Publication.name"=>"ASC",
"limit"=>10);
after debugging $this->Paginator->params->paging->Clipping in the view, you can see that the sort is described in two separate places, "defaults" and "options". the sort info needs to be present in both for it to work in the view.
here is after setting order in controller:
[Clipping] => Array
(
[page] => 1
[current] => 10
[count] => 6685
[prevPage] =>
[nextPage] => 1
[pageCount] => 669
[defaults] => Array
(
[limit] => 10
[step] => 1
[recursive] => 0
[link] => Array
(
[Issue] => Array
(
[0] => Publication
)
)
[order] => Array
(
[Publication.name] => ASC
)
[conditions] => Array
(
)
)
[options] => Array
(
[page] => 1
[limit] => 10
[recursive] => 0
[link] => Array
(
[Issue] => Array
(
[0] => Publication
)
)
[order] => Array
(
[Publication.name] => ASC
)
[conditions] => Array
(
)
)
)
and here is after using $this->Paginator->sort("Publication","Publication.name");.
notice the options array is empty.
[Clipping] => Array
(
[page] => 1
[current] => 10
[count] => 6685
[prevPage] =>
[nextPage] => 1
[pageCount] => 669
[defaults] => Array
(
[limit] => 10
[step] => 1
[recursive] => 0
[link] => Array
(
[Issue] => Array
(
[0] => Publication
)
)
[order] => Array
(
[Publication.name] => DESC
)
[conditions] => Array
(
)
)
[options] => Array
(
[page] => 1
[limit] => 10
[recursive] => 0
[link] => Array
(
[Issue] => Array
(
[0] => Publication
)
)
[order] => Array
(
)
[conditions] => Array
(
)
)
does one really need to modify the paginator class to make this work?
UPDATE:
i found out the problem:
in the core cake controller paginator merges default and options to create the find query.
but the options array is empty when using linkable to sort. because options is listed after default it overrides default and the empty array replaces the default array of options.
solution to this is extending the paginate function inside of app_controller.php and unsetting the options array order value if it is empty:
(line 1172 in cake/libs/controller/controller.php)
if(empty($options["order"])){
unset($options["order"]);
}
then the options will not be overwritten by thte blank array.
of course this should not be changed inside of controller.php, but put it in app_controller.php and move it to your app folder.
On CakePHP 3 this problem can be solved by adding 'sortWhitelist' params to $this->paginate on your controller.
$this->paginate = [
// ...
'sortWhitelist' => ['id', 'status', 'Attendance.Person.first_name']
];
And then in your view:
echo $this->Paginator->sort('Name', 'Attendance.Person.first_name');
This is noted in the docs:
This option is required when you want to sort on any associated data, or computed fields that may be part of your pagination query:
However that could be easily missed by tired eyes, so hope this helps someone out there!