Is there any way currently to select items and apply an action on multiple items in a list or datagrid?
Datagrid has options for selecting items even multiselect but i can only manage to get the relative indexes of the items in the current list not the data objects.
I could create an action to lookup up the items given the index and then store it in redux state and later apply the action. But it feels very prone to errors passing around array indexes.
If i could choose the datagrid would have a selectedRows callback that passed back the full dataitems, dispatching an action on the item id's would then be simple.
This feature isn't implemented yet, but a Pull Request is open about selectable / bulk actions.
https://github.com/marmelab/admin-on-rest/pull/1241
Related
I have a Kendo ListView bound to an Observable object and all is working well.
I'm able to:
Add items to the list
Edit existing items by using the edit template below
Delete items
One oddity though is when I switch an item to edit view and click Cancel it resets all data back to the original data. So if I started with one item with say name and amount fields, I edit the item and change the amount, then add two more items to the list all is well. But then I click edit on any of the items and immediately click cancel, from here it removes all the additional items I added and resets the data for the first item back to what it was at the beginning.
Why would the cancel action do that?
This dojo snippet shows the exact problem I'm having: http://dojo.telerik.com/IKowo
Kendo version 2016.3.1118
EDIT:
One further development, I found a forum post on Telerik stating that you have to have an ID column and a schema:model:id setup otherwise things won't work as expected.
I've updated the dojo snippet as follows: http://dojo.telerik.com/IKowo/2
Since adding the ID to the mix it looks like the amounts aren't being affected by the cancel button but the newly added items still get removed.
Follow the example provided here by telerik
//Binding Listview to local data array & Perform CRUD
http://dojo.telerik.com/eWih/2
The Only Requirement for the cancel event not deleting the new Items is:
The id field should be kept 0 when adding the new item to the datasource
It should be incremented / Updated in the datasource transport.create event (REQUIRED)
happy coding!
My question is mostly conceptual about Backbone.js, but I can mock up some code if my question is unclear.
Consider a case where I have 2 sections on a website. A list of items as one view and another view that has a dropdown to select how the list of items should be sorted. Obviously, the list of items is associated with a collection of models that stores the actual data that populates the list. But I'm unsure the best approach for triggering the collection to be sorted differently when the other view's dropdown changes. Should I be changing the actual order of the collection, or just render the view in the order that I want in the view?
Also, is it a good idea to use a model for the dropdown to keep track of the state of the dropdown, and bind the list of items view to that model so that I know when to rerender the list of items?
You could take several roads here. Here's a few:
Use a router. The router would hold your views, or at least the top-level view (cleaner), and your dropdown view would trigger a route change, which would pass the information along to the view. Best if you want clean URLs.
Make a pointer to the list view in the dropdown view. When the dropdown view receives the change event, it explicitly tells the list view to update. (IMO a terrible approach, but listed here for completeness.)
Back everything with models. (Like you suggest in your last question.) The dropdown view would be backed by a model, and the list view could bind to that model's events. (Again, the list view still has to know about the dropdown model—not ideal.)
Make an event manager. When your dropdown recevies a change, you trigger 'sort' and anything that cares can listen to that event. This isn't a trivial solution but isn't overly complex either. Your list view could then register its intent to listen to the sort event with the event manager, thereby abstracting the actual view inside the event manager and away from the dropdown view.
1 & 4 are effectively the same thing, just depending on whether you want a router or not.
Basically my heuristic with these sorts of scenarios is "nothing should know about things it doesn't need to know about." Applied here, that means that your views shouldn't know about each other.
For some user interfaces it makes sense to have explicit checkboxes to allow users to select the items in a table. What's the best way to accomplish this using cocoa? In other words, how can I link the state of a checkbox in each row to whether or not the row is currently selected?
Tony,
if I get you correctly, you want to add a leading column to your NSTableView so you can select the corresponding column(s), separate from the usual selection of the tableView.
What is your datasource of the table view? A core data stuff or an array/dictionary? if you do not want to modify your data model, you could set up a distinct array (mutable), to keep track of the selection. bind it to the checkbox column (you would want to add as first column) and keep the array in sync with the number of items in the general datasource for the table that displays your valuable data.
You could also enhance your data model with a column "selected", make it BOOL and bind it to the checkboxes. This would also allow you to easily save the last selection to you database or file, whatever you are using.
Can you update your question with some more information on your data model?
sya - living.
I have to make nested list of items and i have to make theme movable. List is stored in database, user can move items on page and then store it back in database. My solution is to store list in Session class and make jQuery fetch and store in user session, but dunno if it's good. What is the best way to approach this problem in codeigniter?
Have a look into jQuery UI sortable, and I'd probably set it to send an AJAX call on the update event containing the new sort order.
I'm working on an InfoPath 2007 form. I have two drop-down lists and i need the second to be populated with items bases on the value chosen in the first list. I use c# to populate the drop-dpwn lists from external sources. I've tried to use the OnChange event to make all this, but the second list is still empty.
If anyone knows, please tell me.
You can filter the entries for the second drop-down list based on your first list (but only if the entries are based on a data source, not manually entered).
Bring up the properties window for
your second drop-down list.
Select your data source.
Click on the button to the right of the Entries text box.
Select the repeating node you wish to use for the basis of your list entry.
Click the Filter Data button. From here you can enter a filter to limit the entries displayed based on the value of your first drop-down list.
Your question was a bit ambiguous. You may be trying to populate a secondary data source based off of your first drop-down list. This should work fine with an OnChange event. Can you post the code you are using to do this?
Some additional tips that may help:
The change event will not fire until focus moves off of the list box. So, for the second drop down to populate, you will need to set the first drop-down then hit tab or click elsewhere in the form.
I don't know the size or nature of the data source you are using for the second drop-down list, but you may consider downloading the entire data source and filter it using the method I described above. This may be a better solution as you won't need to make a database query between entering the first list box and the second one.