How do we sort using the database class in expressionengine. orderby and sort are given an error and do not seem to work. I can't seem to find anything in the documantation about sorting results. This is what i have.
$results = $this->EE->db->query("
SELECT plan_name
FROM exp__plans
WHERE member_id='1002' AND orderby="id" sort="desc" LIMIT 1
");
$x = $results->row('plan_name')
;
There are issues with your query.
try:
$results = $this->EE->db->query("
SELECT plan_name
FROM exp_plans
WHERE member_id = '1002'
ORDER BY id DESC LIMIT 1
");
I would recommend trying to run your query directly against the database if you're having trouble with it. 90% of the time it will be an issue with your SQL.
Also, you are writing this in a add-on... right? if you're trying to get this to work within a template I would recommend checking out the query module.
You can also use Active Record in order to create your query:
$this->EE->db->select('plan_name')
->from('plans')
->where('member_id', '1002')
->order_by("id", "desc")
->limit(1)
->get();
All the doc is on the Codeigniter website.
Related
I am currently building some kind of video channel based on an extension I created. It consists of videos and playlist that contains videos (obviously).
I have to create a page which contains a list of videos AND playlist by category. You also can sort those items by date. Finally, the page is paginated with an infinite scrolling that should load items 21 by 21.
To do so, I created on both Video and Playlist repositories a "findByCategory" function which is really simple :
$query = $this->createQuery();
return $query->matching($query->equals('categorie.uid',$categoryUid))->execute()->toArray();
Once I requested the items I need, I merge them in one array and do my sorting stuff. Here is my controller show action :
if ($this->request->hasArgument('sort'))
$sort = $this->request->getArgument('sort');
else
$sort = 'antechrono';
//Get videos in repositories
$videos = $this->videoRepository->findByCategorie($categorie->getUid());
$playlists = $this->playlistRepository->findByCategorie($categorie->getUid());
//Merging arrays then sort it
if ($videos && $playlists)
$result = array_merge($videos, $playlists);
else if ($videos)
$result = $videos;
else if ($playlists)
$result = $playlists;
if ($sort == "chrono")
usort($result, array($this, "sortChrono"));
else if ($sort == "antechrono" || $sort == null)
{
usort($result, array($this, "sortAnteChrono"));
$sort="antechrono";
}
$this->view->assignMultiple(array('categorie' => $categorie, 'list' => $result, 'sort' => $sort));
Here is my view :
<f:widget.paginate objects="{list}" as="paginatedList" configuration="{addQueryString: 'true', addQueryStringMethod: 'GET,POST', itemsPerPage: 21}">
<div class="videos row">
<f:for each="{paginatedList}" as="element">
<f:render partial="Show/ItemCat" arguments="{item: element}"/>
</f:for>
</div>
</f:widget.paginate>
The partial render shows stuff including a picture used as a cover. So I need at least this relation in the view.
This works fine and shows only the items from the category that is requested. Unfortunatly I have a huge performance issue : I tried to show a category that contains more than 3000 records and It takes about one minute to load. It's a little bit long.
By f:debugging my list variable, I see that it contains every records even through it shouldn't be the case (that's the point of pagination...). So the first question is : is there something wrong in the way I did my pagination ?
I tried to simplify my requests by enabling the rawQuery thing ($query->execute(true)) : I get way better performance, but I can't get the link for the pictures (in my view, I get 1 or 0 but not the picture's uid...). Second question : is there a way to fix this issue ?
I hope my description is clear enough. Thanks for your help :-)
When you execute a query, it will not actually fetch the data from the database until the results are accessed. If the paginate widget gets a query result it will add limits and offset to the query and then fetch the data from the database, so you will only get the records that are shown on a page.
In your case you added toArray() after execute(), which accesses the results, so the data is fetched from the database and you get all records. The best solution I can think of is to combine the 2 tables into 1 so you can do it with a single query and don't have to merge and order them in PHP.
As long as you sort the data after the query you have to handle all data (request all records and especially resolve all relations).
Try to sort the data in the query itself (order by), so you could restrict the data to only those records which are needed for the current 'page' (limit <offset>,<number>).
Here a complex query with join and limit could be faster than a full query and filtering in PHP.
I have a list of categories, e.g. 1000, 1001, 1002, 1003, etc... and users have access to only some of these categories. I want to filter my lucene.net search results based on only categories that the user has access to, or to omit results for items they don't have access to.
I have tried using the Lucene FieldCacheTermsFilter but this returns no results at all:
New Lucene.net.search.FieldCacheTermsFilter("category", {"1000", "1002"} )
Is there a better way to filter results based on a particular field having a value that exists in a list?
I solved this by using a BooleanQuery wrapper around my main query in all cases.
I took my originaly search query (MainQuery) and created a new BooleanQuery using occur.must for that and my security query as below:
dim SecurityQuery as New lucene.net.search.BooleanQuery( )
For Each id as string in AllowedIDs
q.Add(New TermQuery(New Lucene.Net.Index.Term("category", s)), Occur.SHOULD)
Next
Dim FinalQuery As New lucene.net.search.BooleanQuery( )
FinalQuery.Add( MainQuery, occur.must )
FinalQuery.Add( SecurityQuery, occur.must )
This doesn't use a Filter, so I am unsure as to whether this is the best performing option. But it works.
I am using the following query to show list of data, but here limit is not working.
$query = $this->Bookings->find('all')
->where(['Bookings.user_id' => $id])
->contain(['Services'])
->limit(10)
->orderDesc('booking_date');
$this->set('bookings', $this->paginate($query));
$this->set('_serialize', ['bookings']);
but, I am not getting the list of 10 data in each page.
Perhaps it is better to use the $paginate property and then use the maxLimit
See: http://book.cakephp.org/3.0/en/controllers/components/pagination.html#limit-the-maximum-number-of-rows-per-page
Simplistic Problem description:
Lucene index has two fields per document: ID and NAME.
I want to make a query using the Lucene Query interface such that I can find all the documents where ID is 1 OR 2 OR 3 OR so on. The IDs to be searched will be in a list and can potentially have upto 30 elements.
If I was using the query parser I would have done something like
ID:(1 OR 2 OR 3)
But the application is already heavily committed to the Query interface and I want to follow the current pattern. Only way I can think of doing this with Query interface is create n term queries and group them using the Boolean query as below
BooleanQuery booleanQuery = new BooleanQuery();
(String searchId : lstIds)
{
booleanQuery.add(new TermQuery(new Term("ID", searchId)), BooleanClause.Occur.SHOULD);
}
But is there a better/more efficient way of doing this?
Combining queries togetheer with a BooleanQuery is the correct way to reproduce a query like ID:(1 OR 2 OR 3). The query parser will generate a BooleanQuery similar to what you provided for that syntax, so you are absolutely doing the right thing here.
You might be able to make use of PrefixQuery, NumericRangeQuery or TermRangeQuery to simplify matters, if they actually suit your needs in practice, but there is nothing wrong with what you are doing already.
BooleanQuery is the solution for handling OR operator as you have shown in the code but if you want simple alternative of the it you could also use simple Query and pass the IDs as "1 OR 2 OR 3".
Here is the code snippet lucene 7.
Query query = new QueryParser("ID", analyzer).parse("1 OR 2 OR 3");
TopDocs topDocs = searcher.search(query, 10);
OR if you have all the OR you could also use QueryParser default Operator.
Here is the code snippet for lucene 7.
QueryParser queryParser = new QueryParser("ID", analyzer);
queryParser.setDefaultOperator(QueryParser.Operator.OR);
Query query = queryParser.parse("1 2 3");
TopDocs topDocs = searcher.search(query, 10);
I hope that work for you.
I am making some changes to a site using ExpressionEngine, there is a concept I can't seem to quite understand and am probably coding workarounds that have pre-provided methods.
Specifically with channels and members, the original creator has added several custom fields. I am from a traditional database background where each column in a table has a specific meaningful name. I am also used to extending proprietary data by adding a related table joined with a unique key, again, field names in the related table are meaningful.
However, in EE, when you add custom fields, it creates them in the table as field_id_x and puts an entry into another table telling you what these are.
Now this is all nice from a UI point of view for giving power to an administrator but this is a total headache when writing any code.
Ok, there's template tags but I tend not to use them and they are no good in a database query anyway.
Is there a simple way to do a query on say the members table and then address m_field_1 as what its really called - in my case "addresslonglat".
There are dozens of these fields in the table I am working on and at the moment I am addressing them with fixed names like "m_field_id_73" which means nothing.
Anybody know of an easy way to bring the data and its field names together easily?
Ideally i'd like to do the following:
$result = $this->EE->db->query("select * from exp_member_data where member_id = 123")->row();
echo $result->addresslonglat;
Rather than
echo $result->m_field_id_73;
This should work for you:
<?php
$fields = $data = array();
$member_fields = $this->EE->db->query("SELECT m_field_id, m_field_name FROM exp_member_fields");
foreach($member_fields->result_array() as $row)
{
$fields['m_field_id_'.$row['m_field_id']] = $row['m_field_name'];
}
$member_data = $this->EE->db->query("SELECT * FROM exp_member_data WHERE member_id = 1")->row();
foreach($member_data as $k => $v)
{
if($k != 'member_id')
{
$data[$fields[$k]] = $v;
}
}
print_r($data);
?>
Then just use your new $data array.