I searched for hours to find a solution but I couldn't find it.
The problem is that I'm loading data using the entity framework and the include() method. That looks like
Dim Test = (From o in DataContext.Orders.Include("OrderDetails")
select o).FirstOrDefault
Loading, editing and saving of the data works fine. When I add data to the related OrderDetails property of "Test" and remove it by the Remove()-Method of this EntityCollection, the data is removed from the list, but it is added to the database.
Does anyone know how I can delete such related data properly?
Thanks
Related
I know how to get an item of the particular table. Like for user we can have
$userItem = Engine_Api::_()->getItem("user", $userId);
or for a custom table
$customItem = Engine_Api::_()->getItem("custom", $customeId);
I want to know the code or method how can I make my $customItem to work the same way as $userItem works for users table. So that I can get data or manipulate the data of custom table
Thanks for your help. :-)
You can achieve that by creating a model. Check how it's done in /application/modules/User/Model. There is User.php file that declares User_Model_User and methods available for User such as getTitle, get Href etc.
You may use similar approach for your custom item. You will also need to create a file similar to /application/modules/User/Model/DbTable/User.php to declare table for your custom items.
Total NOOB question. I have been using the new linqpad for about 20 minutes now. Great!
But now i want to delete a row in the db. I am using a EF5.0 connection. I cant seem to find anything in the help files or on the net. The only thing I can find is DeleteOnSubmit which doesnt work with EF (as far as I can see). I have also tried DeleteObject which doesnt work either. This is what I have tried.
var co = Companies.First();
co.Dump();
Companies.DeleteObject(co);
This is old... and I don't know if/when this was added (probably in response to this exact scenario)… but you can accomplish this (in your given example) as follows:
//test the following line to ensure the context doesn't complain about the .First() reference
Companies.DeleteOnSubmit(Companies.First());
Companies.Context.SubmitChanges();
You need to SaveChanges on your context (Companies) for your row to be deleted.
Companies.SaveChanges();
I have problems and questions about this scheduler. I already tried to build and almost finished it. Although, I receive some errors...
What I do?
I create custom lightbox
mapping all the data in to table dbo.bEvent
I used custom eventbox like this : Scheduler.Templates.event_text = "({position_desc})" + " " + "{newrate}"
position_desc is actually from other table 'dbo.zone'
I create Views in SQL Server to retrieve data from 'newrate'. 'newrate' actually is a new attribute after I do some query to change rate "1000 to 1k" which is new rate save '1k'.
the views that I create by joining table "dbo.zone and dbo.bEvent"
Problem is?
when I save a new data or insert or update new data. my event box just give me '(Undefine)undefine'
all the data that i put in lightbox is save in dbo.bEvent
after I resfresh the page using f5 or navigate to next page or previous page then the data is updated.
Here i attach some screenshot. Thanks in advance
http://s1319.photobucket.com/user/matpyam/library/?sort=3&page=1
If you save the changes as described here http://scheduler-net.com/docs/lightbox.html#define_crud_logic ,
note that the method uses SchedulerFormResponseScript class to render the response.
Constructor takes instance of the event class to be returned to the client. Values of that event will be applied to the related event on the client-side
return (new SchedulerFormResponseScript(action, changedEvent));
make sure object that you send (changedEvent) has all data properties initialized. Basically the event should have the same data as when it is loaded from the Data action.
Alternative solution, which may be more straightforward, would be reload calendar data with the client-side api after saving event:
scheduler.clearAll();
scheduler.load("dataUrl", "json");
http://docs.dhtmlx.com/scheduler/api__scheduler_clearall.html
http://docs.dhtmlx.com/scheduler/api__scheduler_load.html
I am using Kentico 7.0, ecommerce version.
I would like to create a sidebar menu that shows the eshop's top selling product categories. I am a kentico newbie so I am looking around for the correct terminology/guidance so that I can dig deeper.
The ideal approach in my opinion would be to be able to add a field on categories, which is used to filter categories for the menu. This way I can either have some kind of job that updates the fields automatically based on sales, OR provide a manual override for an admin to specify whether a category will show up on the menu. Of course some kind of weight would also be needed to specify menu item ordering.
Which way should I look?
HAve you tried using the "Top N products by sales" web part that is available? you can configure from which part of the content tree (products) it should pull the data - in the Path property you can use also a path expression or macro that is resolved dynamically so the web part can display different products in different sections.
There are many ways to code for Kentico. I personally find the API is a bit clunky and on quite a few occasions I was surprised that a method didn't exist requiring extra calls to get the required results. I do use the Kentico API more when putting data in to Kentico. Pulling it out I use the following.
STORED PROC
Write a SQL stored procedure to get the top X categories - GetTop5Categories.
Look at the COM_* tables, specifically COM_OrderItem, linking OrderItemSKUID back to COM_SKU (or View_COM_SKU_Joined if you need to get to the IA).
This will get you the top selling products with a group by, a count, a top X and an order by.
Then you can link to other tables such as CMS_Category or CMS_Document (depending on how you setup your categories). The bonus of this is that procs are compiled, you do all your data manipulation there (it's what MSSQL specialises in!) and you only send back what you need to in the result set.
DOMAIN (leveraging EF)
I usually create a separate class library project myproject.domain and put an Entity Framework edmx in there mapped back to the Kentico DB. Add the proc to the EDMX, then create a Function Import MyProject_GetTop5Categories from your newly imported proc.
WEB
add a reference to the domain project from your web project, and a 'using at the top of the codebehind of the control.
using myproject.domain;
then in Page_Load for the control:
...
if(!IsPostBack)
{
var entities = new MyProjectModelContainer();
var list = entities.MyProject_GetTop5Categories().ToList();
StringBuilder sb = new StringBuilder("<ul>");
foreach(var category in list)
{
sb.Append("<li><a href='"+category.Link+"'>" + category.Name + "</a></li>");
}
sb.Append("<ul>");
listPlaceHolder = sb.ToString();
}
handwritten so probably a typo or two in there :)
HTH
I would like to remove all items from a test collection. My setup is
connection = Connection(app.config['MONGODB_HOST'], app.config['MONGODB_PORT'])
db = connection.test_database.tutorial
I have a document model class Test which maps to the tests collection. I've tried deleting the collection with both
connection.test_database.drop_collection('tutorial.tests')
db.tests.remove()
However querying something like
list(db.Test.find())
still gives me the old data. Something like
list(db.tests.find())
returns an empty list. However if I add new entries into tests the previous query also doesn't reflect the changes, so I don't think thats accurate either.
Problem was with this line:
db = connection.test_database.tutorial
Since it was saying test database and the tutorial collection
removing worked when I changed it to
db = connection.tutorial