Suppose I several tags, text input, radios, etc referencing one instance object. I would like to use a dropdown on that page to switch the references mentioned before to another instance of the object.
This part is pretty easy with change listener. However, the problem I have is the values currently displayed on the screen are getting set into the new, second instance.
I would like the current values to be stored in the current instance, and then the when the page refreshes I would like the new values to come from the new instance and be displayed on the screen.
Is there was way to do this? Does my question make any sense?
Grae
A value change listener is exactly the wrong tool for this, because it gets called before the values are set.
What you want is an action listener, which will get call after the values from the page are validated and set.
Related
I have a data table that represents data like this:
after clicking the edit marker (pencil icon) i can edit some fields. The fields need to be validated and if it fails the fields have to reset. I do this in the managed bean of the view using p:ajax event="rowEditInit" to save the attributes before saving and ajax event="rowEdit"to do the actual validation. if validation fails i return the previously saved values. if validation is correct i save the data to the database and load the collection again. Then i
RequestContext.getCurrentInstance().update("vesselBalticSegmentCreateForm")
to reload the view.
Doesnt matter if the validation fails and i set the values back or it succeeds and i save/reload data the table breaks becoming like this:
seems to load only the edited row. and loads both edit/list modes.
any ideas what i'm doing wrong?
The primeFaces RowEdit functionality already updates the row, also updating the table does by design not work (not sure if it is intentional, but that is just how it is). I know there is a duplicate of this Q/A on stackoverflow, I just do not seem to be able to find it. Someone might be able to create a patch/workaround, e.g. try on the prerenderview event to remove the id's of id's in the individual row that was edited. I don't have the time to try to create one.
I have used webshims for html5 form validation in a single page app with multiple pagelets(divs). The forms are not submitted but local javascript is invoked after each conversation and collected data is posted .
Next I iterate over all the fields and reset the values.
Then I take the new user back to the first pagelet having first form for the new conversation. This time even after filling the correct values the border does not turn green.
Note:
However when we select the field and click outside the field without filling it. and then after filling the correct data border turns green.
However when we tried to achieve it programmatically iterating over each field resetting it and using javascript focus method, that did not do the trick.
I am sure I must be missing some thing. would be able to point out what.
Regards
Barman
I'm not sure, what you want to achieve. I would need to see some code. If you change the value programmatically you can update the validation ui with the event refreshvalidityui on the form field. If you want to reset the ui, you can either trigger a reset event on the form or resetvalidityui on the form field
$('input').val('foo').trigger('refreshvalidityui');
or
$('input').val('foo').trigger('resetvalidityui');
or
$('form').trigger('reset');
Please let me know, if this helps.
I'm trying to create a Mac OS Core Data application that has an array of parent objects (called Levels) each of which contains a collection of child objects (called Blocks) via a one-to-many relationship. I have a table view successfully controlling the array of levels, and a custom view object that draws the blocks graphically based on positions held in x and y properties of my Block model class. I can add blocks to the currently selected level, remove them, select and move them around in the custom view, and have bound text fields to various other properties of the Block class which I can use to edit those values. All of this information is successfully saved and restored to and from the core data repository with no issues output to the debugger. Wonderful. I've used an NSArrayController for the Levels and another for the Blocks that is bound to the current selection of the Levels array controller, in what I've read is a pretty standard way.
Now, my Block class is actually an abstract class, and what I actually instantiate are various child classes of Block (eg RedBlock, GreenBlock, BlueBlock classes). Each sub-class has a separate set of properties that only apply to that type of block (so RedBlock has a "text" property that none of the others have, BlueBlock has an integer "value" property, etc). I want to create an inspector that will change depending on the type of the Blocks that are currently selected in my custom view. To try this, before I start creating subviews for each type of Bock, I have created a text field that I want to bind to the currently selected RedBlock's "text" property, preferably showing nothing when Blocks of other kinds are selected. This is where I'm stuck. I've added another NSArrayController in Entity mode with RedBlock specified as it's type so I can bind to the "text" property, and tried adding a filter predicate based on the class type. I've also tried various other configurations and bindings, but I'm either getting exceptions, or corrupt values in the text field that I bind to that controller, or other weird bugs and general brokenness.
I've googled around for an example of an inspector that can cope with a heterogenous array of objects (as that's essentially what I'm trying to do) but so far no luck.
So, my question is - am I going about this the right way? Should I be trying to create an NSArrayController that filters the selected items in my Blocks array controller somehow? If so, should that be straightforward or is there some trick that I've missed? If not, what is the best way to do this?
This approach should work, provided you limit the inspector to displaying view which bind to properties which apply to the entire selection. You don't need a second array controller.
To test the simple example, try creating a data set with only blocks, see that your bound control loads without raising exceptions, and that it updates the object correctly.
Once that is working, create separate views for each type, and display and hide them when the selection will change. Again, if you have a heterogenous selection, hide them all.
I'm setting up an edit window for a player to edit his user data. I've got all of the fields on the edit form bound to the appropriate Core Data entity (via an NSArrayController), and I've got an awakeFromNib method installed to handle calling the record, but I'm not sure what to put inside the method to get the record to display.
Ultimately, my goal with this is to set it up so that the application checks whether an entry exists for the user, and create one for him if there's no entry in the table.
You should look at using a NSObjectController or NSArrayController rather than binding directly to the NSManagedObject. The controllers work properly with bindings and your data will display nicely and changes you make will be propagated via the controller to your NSManagedObject.
You can set the object used by the controller in your awakeFromNib. On NSArrayController use the setSelectionIndex:(NSUInteger) index message and then to avoid empty selection send it the setAvoidEmptySelection:TRUE message
Hope that helps.
I've got a table one column of which uses an NSPopUpButtonCell. Try as I might, I can't seem to figure out the way to properly bind everything the way I want it. Here's what I'm trying to do:
I have an NSArrayController plucking items from a managed object context, called 'Field Values'. This is to be used to populate the popup menu for each item (i.e. the list of available choices). I can bind this by selecting the cell in IB and binding its content/objects/values to 'Field Values'.arrangedObjects and 'Field Values'.arrangedObjects.name as appropriate (to get the represented object and the visible title).
I then want to bind the column in such a way that the selected value in each row comes from an array in my controller class, again made visible (and only edited through) another NSArrayController.
So far I've managed to set it up so that every popup menu contains the list of available fields, and that the default value is selected in each of them. Actually selecting an item has no effect, however— it just snaps back to its initial value. I've also managed to find some other variations on this, such as the menu being populated with the selected values, or containing the name of all available values, and the selection containing the -description of the 'none' value I added.
I'm sure I'm missing something fairly simple, but I'm not sure what it is. Presumably there's some subtlety I've missed in how to bind this sort of data (i.e. the Content vs. Content Object vs. Content Value things), but I'm damned if I can see it right now.
Many thanks in advance :o)
I've got a similar set up with a table view, although the data source isn't Core Data based, but I saw one thing you might double check that could be a subtle difference. In my setup for the table column, I have the table column itself bound via content, contentValues, and selectedObject. However, it looks like it's also possible to do the bindings on the actual NSPopUpButtonCell instead. Perhaps it works when the bindings are on the table column, but not when they're on the actual cell? Anyway, there's one thing that might be worth looking into.
Never bind to scroll view, table view or cell.
However, ever bind to table columns.
Watch the title of the Inspector window to be certain of what you're binding.