I need some guidance. Forgive me for a lengthy post but I need to explain myself. In my world, there is no one who understands what I am talking about so I have to go online for assistance.
I am an architect doing my own website because work has dried up and I plan to use an improved website for a marketing campaign.
I have done what I'd call a "lash-up" of this site which functions OK. But it's nowhere near ready to publish. I am trying to get it reorganised to do this and am moving the whole thing over to Codeigniter. My puzzle relates to views in Codeigniter.
One of the main pages for potential clients is the projects page showing work done. It uses nested tabbing. As I have said, I've made it work OK in ordinary procedural PHP.
Note that the projects are organised by category i.e housing, commercial etc In each category there are projects.
Actually the tabs are dynamically produced with some assistance from jQuery. I mean by this that my homespun php creates markup based on what's returned from the database.
The tab markup is the usual one of an unordered list whose li elements contain anchors whose hrefs reference divs arranged below. To achieve nesting, these divs then contain another ul with a further set of divs related to it.
The top tabs correspond to a category e.g housing, commercial. The lower tabs correspond to projects within a category.
I've made this work with four queries before. I think at least one may be redundant but I said it was a "lash-up".
Query 1: "select distinct pcat, pcatid from pcategory inner join projects on pcatid = projcat order by pcat desc"
From this query I get hold of the id used in the href.
Query 2 : same as above but this time the id is used for div id.
The next query is the source of my puzzlement because I don't see how to replicate it with CI.
Query3 :
$jobcat=$row2['pcatid'];
$queryall3 = "select projid, projtit, projcost, projdate from projects where projcat= '$jobcat'";
This query uses the category id - $jobcat - returned by each iteration of the while clause used to expand the results from query 2. In other words, it runs inside the query 2 while loop so it can get the category id and then get all the projects related to it.
The results of query 3 are used to form the lower tabs, and their href value is the id of the project.
Query4: same as query 3 and used to populate the lower divs with data from the database relating to a specific project.
So, finally my question: it seems to me that query 3 is difficult to manage using the Codeigniter set up. I can imagine an array of results looped over in a view. What I can't conceive is how to make a model call within that loop.
Apologies for a long-winded question and any maladroit coding assumptions exhibited. Assistance would be a blessing.
Tom
I don't really see what you're asking, but it seems that you want to know how to perform queries in CI?
In which case I suggest you take a good read of the docs
$this->db->select('pcat, pcatid');
$this->db->distinct();
$this->db->from('pcategory');
$this->db->join('projects', 'pcategory.pcatid = projects.pid', 'inner');
$this->db->order_by('pcat', 'DESC');
$result = $this->db->get();
I very much doubt this will work as I do not know your table structure but may give you an idea of how to use the active record class in CI.
You can of course just use the query method:
$results = $this->db->query('YOUR QUERY HERE');
the active record class can do a lot of the work for you, however.
As for about being difficult to do in CI, this is simply untrue - you just need a clearer picture and understanding of what you want to achieve.
Edit
$jobcat=$row2['pcatid'];
$queryall3 = "select projid, projtit, projcost, projdate from projects where projcat= '$jobcat'";
$results=$this->db->query($queryall3);
$data = $results->result_array(); // get the results of the 3rd query as an array
// new query
$this->db->select('query_4_select'); // select whatever you need
$this->db->from('whatever_table');
// this probably isn't the most efficient way, but for examples sake:
foreach($data as $row) // using the result_array from above
{
$this->db->or_where('query_4_id', $row['id']); // the magic !!
}
$new_results = $this->db->get();
So essentially, you get the ID's from query 3, run it through a foreach and build a where x=x or x=y or x=b type query, which will then (hopefully) return the desired results.
This is one way, you will need to tweak it.
But it sounds like you can just use a join? Perhaps if you could post your entire tables structure.
Related
I'm working on a portal based on Orchard CMS. We're using Orchard to manage the "normal" content of the site, as well as to model what's essentially data for a small application embedded in it.
We figured that doing it that way is "recommended" for working in Orchard, and that it would save us duplicating a bunch of effort in features that Orchard already provides, mainly generating a good enough admin UI. This is also why we're using fields wherever possible.
However, for said application, the client wants to be able to display the data in the regular UI in a garden-variety datagrid that can be filtered, sorted, and paged.
I first tried to implement this by cobbling together a page with a bunch of form elements for the filtering, above a projection with filters bound to query string parameters. However, I ran into the following issues with this approach:
Filters for numeric fields crash when the value is missing - as would be pretty common to indicate that the given field shouldn't be considered when filtering. (This I could achieve by changing the implementation in the Orchard source, which would however make upgrading trickier later. I'd prefer to keep anything I haven't written untouched.)
It seems the sort order can only be defined in the administration UI, it doesn't seem to support tokens to allow for the field to sort by to be changed when querying.
So I decided to dump that approach and switched to trying to do this with just MVC controllers that access data using IContentQuery. However, there I found out that:
I have no clue how, if at all, it's possible to sort the query based on field values.
Or, for that matter, how / if I can filter.
I did take a look at the code of Orchard.Projections, however, how it handles sorting is pretty inscrutable to me, and there doesn't seem to be a straightforward way to change the sort order for just one query either.
So, is there any way to achieve what I need here with the rest of the setup (which isn't little) unchanged, or am I in a trap here, and I'll have to move every single property I wish to use for sorting / filtering into a content part and code the admin UI myself? (Or do something ludicrous, like create one query for every sortable property and direction.)
EDIT: Another thought I had was having my custom content part duplicate the fields that are displayed in the datagrids into Hibernate-backed properties accessible to query code, and whenever the content item is updated, copy values from these fields into the properties before saving. However, again, I'm not sure if this is feasible, and how I would be able to modify a content item just before it's saved on update.
Right so I have actually done a similar thing here to you. I ended up going down both approaches, creating some custom filters for projections so I could manage filters on the frontend. It turned out pretty cool but in the end projections lacked the raw querying power I needed (I needed to filter and sort based on joins to aggregated tables which I think I decided I didn't know how I could do that in projections, or if its nature of query building would allow it). I then decided to move all my data into a record so I could query and filter it. This felt like the right way to go about it, since if I was building a UI to filter records it made sense those records should be defined in code. However, I was sorting on users where each site had different registration data associated to users and (I think the following is a terrible affliction many Orchard devs suffer from) I wanted to build a reusable, modular system so I wouldn't have to change anything, ever!
Didn't really work out quite like I hoped, but to eventually answer the question in your title: yes, you can query fields. Orchard projections builds an index that it uses for querying fields. You can access these in HQL, get the ids of the content items, then call getmany to get them all. I did this several years ago, and I cant remember much but I do remember having a distinctly unenjoyable time with it haha. So after you have an nhibernate session you can write your hql
select distinct civr.Id
from Orchard.ContentManagement.Records.ContentItemVersionRecord civr
join civ.ContentItemRecord cir
join ci.FieldIndexPartRecord fipr
join fipr.StringFieldIndexRecord sfir
This just shows you how to join to the field indexes. There are a few, for each different data type. This is the string one I'm joining here. They are all basically the same, with a PropertyName and value field. Hql allows you to add conditions to your join so we can use that to join with the relevant field index records. If you have a part called Group attached directly to your content type then it would be like this:
join fipr.StringFieldIndexRecord sfir
with sfir.PropertyName = 'MyContentType.Group.'
where sfir.Value = 'HR'
If your field is attached to a part, replace MyContentType with the name of your part. Hql is pretty awesome, can learn more here: https://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html But I dunno, it gave me a headache haha. At least HQL has documentation though, unlike Orchard's query layer. Also can always fall back to pure SQL when HQL wont do what you want, there is an option to write SQL queries from the NHibernate session.
Your other option is to index your content types with lucene (easy if you are using fields) then filter and search by that. I quite liked using that, although sometimes indexes are corrupted, or need to be rebuilt etc. So I've found it dangerous to rely on it for something that populates pages regularly.
And pretty much whatever you do, one query to filter and sort, then another query to getmany on the contentmanager to get the content items is what you should accept is the way to go. Good luck!
You can use indexing and the Orchard Search API for this. Sebastien demoed something similar to what you're trying to achieve at Orchard Harvest recently: https://www.youtube.com/watch?v=7v5qSR4g7E0
I'm able to fetch information for whatever table I need the problem here is the update, insert, and delete records, is not working..
I have read the Joomla doc's but even doing the simplest update queries are not working... so here is my code:
UPDATE:
// I'm getting the data from an array
if (!empty($_POST['data'])) {
$getData = json_decode($_POST['data'], true);
}
// after this line I have a foreach for the array
// in the foreach I have a few IF's
// ether if the result from IF is True or False
// in both I have similar queries
// So let say IF return true;
// Lets prepare the Data using OBJECT's
$object = new stdClass();
$object->product_id = $v['product_id'];
$object->product_name = $v['product_name'];
$object->product_price = $v['product_price'];
$object->product_number = $v['product_number'];
$result = JFactory::getDbo()->updateObject('#__tienda_product', $object, 'product_number');
// that should Update my tables but it doesn't ... now my table has about 21 columns
// but I only need to update 4 columns base on the column product_number
You might have notice the $v['product_id'] where $v is from the foreach, the foreach and the first query are working fine, I did a few echo's before moving to the Update part just to make sure I'm getting the correct data in a format that it should be... any way... the Update part is not working... so I thought it may be because of my table I when to use one table from the regular instalation of joomla... but it still the same no result on the update...
Does any one know how to "update" a table using Joomla CMS as framework?...
Remember I want to use the updateObject() method...
Why don't I use Joomla Framework instead of the CMS's library?
Well, I can give you a few examples, let say:
a business man want a simple basic report, he doesn't care about managing the site he has people to do that, he also gets a sales report, but he doesn't trust the crew just yet and he want to able to see and compare the result, and he needs and standalone without all the fancy tools that joomla has and for that he need an standalone app that can give that kind of report... ok I might have gone a bit far, but the idea is to have basic, simple, easy to read reports and updates, and that is why I have started this project.
Again, I already went to joomla and read the docs but following their examples it just not working... now, am I have to declear all of the columns even if they don't need to be update? or am I missing an execution for the query which in joomla doesn't mention any executions when using $object() only when using regular queries SQL... the idea is to use $object() ...
Thank you for taking the time.
You have defined the updateobject as a variable, and are not calling it. try changing this:
$result = JFactory::getDbo()->updateObject('#__tienda_product', $object, 'product_number');
to this:
JFactory::getDbo()->updateObject('#__tienda_product', $object, 'product_number');
Also, on a side note, you should not use $_POST and instead should use JInput
I'm creating an application in which I have several entities and now I need to filter the content of third combobox dynamically. I explain myself better. I have 3 combobox (building, floor and department), I would like first to show me all the buildings included, but the second should show only selected before the plans for the building, the last I should be select only the departments of the building and the plan you choose. How can I do this? To simplify attaching some photos.
You simply drill down with predicates, if you use single fetch requests to Core Data.
However, your relationships are not set up correctly. For example, there is an edificio attribute in Particelle. If it refers to an building, it should be a relationship to a Edifici object, not some kind of foreign key. There are no foreign keys in Core Data, just relationships.
If you do this, everything becomes much easier by using a NSFetchedResultsController. You can now simply traverse the object graph without any specific fetching.
The scheme could be something like this (maybe need to change the order):
Anno <--->> Particella <---->> Edificio <---->> AreaRischio
Now you can simply tell the fetched results controller to start fetching all Anno entities. Then you drill down with simple dot notation:
NSSet *listForNextTable = selectedAnnoObject.particelle;
and further with
NSSet *listForNextTable = selectedParticellaObject.edifici;
etc. You see, it gets really simple.
I want to know how to use arregate sql functions for when making a Magento module. I currently have this code inside my mode;
$rake = Mage::getModel('showdown/votes')->getCollection();
$rake->addFieldToFilter('votedfor', $productid);
//$collection->groupByFilter('matchid'); //<-- what do i put here?
$sticks = count($rake);
I'm not sure exactly what you want to achieve as the title of you question conflicts with the code example provided.
The title asks how to count a collection, and your code example asks how to perform a group by.
So,
Collection Count
count($collection), $collection->count() or simply $collection->getSize() which will avoid the collection load (ideal if you simply require the count and nothing else)
Group By
EAV Based Collection:
$collection->groupByAttribute('matchid');
Non EAV Based Collection:
$collection->getSelect()->group('matchid');
I posted a couple of questions about filtering in an eager loading query, and I guess the EF does not support filtering inside of the Include statement, so I came up with this.
I want to perform a simple query where get a ChildProdcut by sku number and it PriceTiers that are filtered for IsActive.
Dim ChildProduct = ChildProductRepository.Query.
Where(Function(x) x.Sku = Sku).
Select(Function(x) New With {
.ChildProduct = x,
.PriceTiers = x.PriceTiers.
Where(Function(y) y.IsActive).
OrderBy(Function(y) y.QuantityStart)
}).Select(Function(x) x.ChildProduct).Single
Is there a more efficient way of doing this? I am on the right track at all? It does work.
Another thing I really don't understand is why does this work? Do you just have to load an object graph and the EF will pick up on that and see that these collections belong to the ChildProduct even though they are inside of an anonymous type?
Also, what are the standards for formatting a long LINQ expression?
Is there a more efficient way of doing this? I am on the right track at all?
Nope, that's about the way you do this in EF and yes, you're on the right track.
Another thing I really don't understand is why does this work?
This is considered to be a bit of a hack, but it works because EF analyzes the whole expression and generates one query (it would look about the same as if you just used Include, but with the PriceTiers collection filtered). As a result, you get your ChildProducts with the PriceTiers populated (and correctly filtered). Obviously, you don't need the PriceTiers property of your anonymous class (you discard it by just selecting x.ChildProduct), but adding it to the LINQ query tells EF to add the join and the extra where to the generated SQL. As a result, the ChildProduct contains all you need.
If this functionality is critcal, create a stored procedure and link entity framework to it.