I have 4 tables:
Stores => StoreID , AddressID
Contacts => ContactID, StoreID, DesignationID,
Designation => DesignationID
Address => AddressID
In Entity Query I used Include while getting all the details of the stores.
ObjectContext.Stores.Include("Address").Include("Contacts.Designation");
So I got all the stores with all their contacts and other objects like Address. Now I want to filter Store's contacts but our Domain Service Linq does not allow filtering with Include. It include all the data. So I want to use CollectionViewSource for filtering my child data.
In UI, I have One ListBox for Store Information and within that ListBox -> I have one more list box for store's Contacts and I want this Contacts to be filtered with some condition on its Load...
I can't figure out how to do this with MVVM or directly in XAML. But Doing it with MVVM is preferably better.
Can anyone please help me solving this problem?
Thanks for your time and help.
You need to first get hold of the default ICollectionView for your source item.
You can do this like so
var collectionView = CollectionViewSource.GetDefaultView(collectionToFilter);
Next, you create a filter delegate like so
collectionView.Filter = delegate(object item){return some boolean expression;};
Hope this helps
Related
I've been adding records to a dynamic module via the API and in the process during my experimentation I added a bunch of records that weren't associated correctly with any valid parent record.
I've checked and so far I can see that Sitefinity stores data about these records in a number of tables:
mydynamiccontenttype_table
sf_dynamic_content
sf_dynmc_cntnt_sf_lnguage_data
sf_dynmc_cntent_sf_permissions
I would like to clean up the database by deleting these records but I want to make sure I don't create more problems in the process.
Anyone know if there are more references to these dynamic content type records or a process to safely delete them?
There are probably other tables, so your safest option would be to delete the items using the Sitefinity API.
Just get the masterId of the item and use a code like this:
public static void DeleteDataItemOfType(this DynamicModuleManager manager, string type, Guid Id)
{
Type resolvedType = TypeResolutionService.ResolveType(type);
using (var region = new ElevatedModeRegion(manager))
{
manager.DeleteDataItem(resolvedType, Id);
manager.SaveChanges();
}
}
I recently started experimenting with the REST API for SharePoint 2013 Foundation and I am trying to return all entries in a list. My GET request returns the data I am looking for, but the IDs used to identify the columns in the list are not helpful for identifying what the information is (see images below). The column IDs between 'Title' and 'ID', in the second image, are a jumble of characters.
SharePoint List View
Response Data
Is there any way to configure the list to use the column names as IDs? Also, is there some significance to the characters currently used as IDs?
You will need to make a second request to get a listing of columns that includes the InternalName and the Title which is what you are trying to reference:
You can use this REST call:
_api/web/lists/GetByTitle('Project Details')/fields
or you can use CSOM:
using (ClientContext context = new ClientContext(url))
{
List list = context.Web.Lists.GetByTitle("Project Details");
context.Load(list, l => l.Fields);
context.ExecuteQuery();
foreach(Field field in list.Fields)
{
Console.WriteLine(field.Title);
Console.WriteLine(field.InternalName);
}
}
SharePoint automatically generates the InternalName and it is a read-only field, at least using REST. It'll be easier to get the Field Data to correlate the InternalName to the Title than changing the values.
The column you are referring to, between Title and Id, is the ID of the content type associated to the item. It is not a column ID.
The SharePoint REST API is OData compliant, so you can use the $select parameter to query for the neccesary fields.
http://server/site/_api/web/lists('guid')/items?$select=Column1,Column2
Please be aware though, lookup fields need to be expanded as well, otherwise you get only the Id of the lookup item.
http://server/site/_api/web/lists('guid')/items?$select=LookupColumn&$expand=LookupColumn/Title
I'm not sure what is the way to do this , so here I ask:
I have a Person model and Event model, and a connection table Person_Event.
The interface that I got now works in the following way:
A person is logging in and his id is being send via URL
The person is selecting events he is interested in from the cGridView (checkbox column)
Writing some comment
4.Pressing send button , and the following create action is being triggered:
public function actionXcreate()
{
$model=new Person_Event;
if(isset($_POST['Person_Event']))
{
foreach ($_POST['selectedIds'] as $eventId)
{
$pmodel=new Person_Event;
$pmodel->person_id=$this->_person->id; //the id of the person who is logged in
$pmodel->attributes=$_POST['Person_Event']; //the comment
$pmodel->event_id = $eventId; //all the events he checked in the grid
if (!$pmodel->save()) print_r($pmodel->errors);
}
$this->redirect(array('site/success'));
}
So far , all is logical and simple. However , what I end up is that the comment the person wrote is being duplicated to every person_event row in the DB.
I want to put a text box in each row of the grid , and the commnet that will be written there will go to the specific event.
Now , I found this topic in yii about "admin-panel"
which is kind of helpful , BUT:
I already have a foreach in the action , the one that matches the person's id with the event's id , so how can I put another individual comment for each combo?
The default CGridView supports only basic functionality, you would need to extend CGridView or use an extension to make columns editable
Easiest way to do this is use something like TbEditableColumn from Yii-booster library
see http://yiibooster.clevertech.biz/extendedGridView#gridcolumns EditableColumn in the additional column types section
If you do not like or wish to use twitter-bootstrap styling a standalone extension like http://www.yiiframework.com/extension/eeditable will help.
Alternatively you can extend CGridView yourself to extend it to support column level editing
I want to get a list of users filtered by a property (string) being null or empty.
I've created an index for this but I'm not sure if my way of implementing it is the right way to do it.
public class Users_Contributors : AbstractIndexCreationTask<User>
{
public Users_Contributors()
{
Map = users => from user in users
where user.ContributionDescription != null && user.ContributionDescription != ""
select new {};
}
}
So I just want raven to "prepare" the list of users for me. I'm just gonna get all user objects out of that index with no additional filtering/where criterias at query time.
Is the above code the way to go or can I achieve the same in a better way? Im feeling Im missing something here. Thanks!
This will work just fine. The result would be that the index only contains users that have something in their ContributionDescription field.
If you want to make it slightly easier to read, you can use string.IsNullOrEmpty, but that won't have any impact on performance.
Map = users => from user in users
where !string.IsNullOrEmpty(user.ContributionDescription)
select new {};
It probably feels strange because of the empty object at the end, but that just defines the index entries. If you aren't sorting or filtering by any other field, then using an empty object is just fine. Keep in mind that the __document_id entry gets created regardless of what fields you map.
I was just wondering whether when loading an entity which contains a collection e.g. a Post which may contain 0 -> n Comments if you can define how many comments to return.
At the moment I have this:
public IList<Post> GetNPostsWithNCommentsAndCreator(int numOfPosts, int numOfComments)
{
var posts = Session.Query<Post>().OrderByDescending(x => x.CreationDateTime)
.Take(numOfPosts)
.Fetch(z => z.Comments)
.Fetch(z => z.Creator).ToList();
ReleaseCurrentSession();
return posts;
}
Is there a way of adding a Skip and Take to Comments to allow a kind of paging functionality on the collection so you don't end up loading lots of things you don't need.
I'm aware of lazy loading but I don't really want to use it, I'm using the MVC pattern and want my object to return from the repositories loaded so I can then cache them. I don't really want my views causing select statements.
Is the only real way around this is to not perform a fetch on comments but to perform a separate Select on Comments to Order By Created Date Time and then Select the top 5 for example and then place the returned result into the Post object?
Any thoughts / links on this would be appreciated.
Thanks,
Jon
A fetch simple does a left-outer join on the associated table so that it can hydrate the collection entities with data. What you are looking to do will require a separate query on the specific entities. From there you can use any number of constructs to limit your result set (skip/take, setmaxresults, etc)