In Swift, you have views, views, and more views. and i'm trying to make a dynamic list of views that is varied by the files in a group.
Im aware that the groups are not saved on app creation
I cant use Init() in a view because that implies that the view was activated by an outside source (NavigationView for example)
Having a static variable is saved on app startup so i could probably do something like that.
But Essentially i'm trying to be lazy/clever and do something that you can do in java, like iterate through every class in a package and instantiate those objects as you need. I want a NavigationView that's Dynamic, like i can add an Annotation (attribute in this case, but probably not helpful for my problem, just an ides) to my Views, and have a for loop iterate through an array that contains all my possible view objects and give me a navigationView for that.
I COULD just make a Statically configured list of Views ie [v1(), v2(), v3(), v4()...] and just do a ForEach through that and work that way, i just don't want to have to configure that in the main file when i cold probably do it dynamically (if possible) and just write a new class, and at the top put like an annotation and have it auto add to an Array that i'm managing dynamically.
I know you can iterate through files, but files on compile are not in the same structure (no folders etc...) but even if i could i don't know how to do that, and add all vies to a large Set of views for a navigation pane. Like a ForEach of [arr of views] each becoming a navigation link. and i can get the Name of the View by doing View.name or whatever
TLDR:
I want to have my Views Automatically Add themselves to a Static data list (Array of Views probably) and be able to have a navigationView Dynamically just add it to the clickable NavViews and replace this:
With something that is just a loop of all my possible views that i've declared somehow.
Is this possible? if so how would i go about doing something like this
also, i know its probably not the best idea, but for the sake of learning id like to understand how to do this, then maybe a better way of going about what i want so i don't have a centralized place, and i can make it dynamic
Related
Sorry if my question is silly but I'm new to DNN/2sxc, I've spent the whole day trying to figure this with no success..
I have two instances of the same app, one in the home page and the other on its own page, each one must have its own view template (I use Razor).
My problem is I cannot figure a way to make the two apps read the same data, so every add/edit/remove/re-sort in one of them will be reflected to the other, currently each app has its own data and therefore they are unusable in my case.
I've tried to use a 'EntityTypeFilter' inside a 'Data Query' and use it in both views (as in the News-Simple demo video), it worked and gave me all the items in the two views, but another two problems come with this solution:
1- now I'm unable to use the toolbar to (add/remove/reorder,.. etc) any of the items , as you can see in this image, which is a show-stopper for me,
note: this is the toolbar I use:
#foreach(var item in AsDynamic(Data["Default"]))
{
...
#Edit.Toolbar(target: item, actions: "new,edit,replace,remove,moveup,movedown,instance-list")
2- the 'Content Demo Item' is also visible in the list, but it is not that important since I can delete it and use one of the real data items as a demo item.
I appreciate any kind of help.
Thank you.
So the first thing you should know is the difference when using content-items as data (to query, etc.) and when using it as assigned-items (where each module-instance has a subset of items). Here's the blog that should help you understand the difference: http://2sxc.org/en/blog/post/12-differences-when-templating-data-instead-of-content
So when you want the "manually and easily control the exact items displayed, their ordering etc." you want to use the "content-assigned-to-instance" which also gives you the simple add, delete buttons, as these don't really delete anything, but just remove the assignment from the module-instance.
Now your case is a bit special, in that you want to re-use the exact same set in another module-instance. There are a few ways you can do this:
Same View
if it's exactly the same view etc. just duplicate the module using DNN-features (the add-existing-module-to-another page)
different view
if it's a different view (maybe more compact, etc.) you again have multiple options. The first is to mirror / duplicate using the dnn-feature, and just put an if-im-on-this-page-then-show-differently or inject another CSS. That's probably the easiest without any dev-know-how.
The harder, but possibly nicer way, is to actually to use a new template, and tell it to retrieve the items in the way they are configured in the other module - let's say module 1 is the original, module 2 has a different template wanting to access the items of module 1 in exactly the same order as given in 1. They way to do this is simple, but requires a few lines of C# code in Module 2.
You need to create a new ModuleDataSource (https://2sxc.org/en/Docs/Feature/feature/4542) object and tell it that it's from Module 1. If you've never done this, it's basically that your code can create a query just like the visual designer, but you have more control - see the wiki https://github.com/2sic/2sxc/wiki/DotNet-DataSources-All. The Module-Data-Source in the visual-query-designer doesn't allow you to "switch" modules (a advanced setting we may add in the future) but the object has a ModuleId property which you can set before accessing the data, making it "switch" to that Module. here's the Pseudo code in your Module#2 razor...
var otherModData = CreateSource<ModuleDataSource>();
otherModData.ModuleId = 1;
foreach(var itm in AsDynamic(otherModData["Default"])) {
...
}
That should do it :)
I have one UITableView class that can load a variety of data. All the actions on the data that is loaded will be the same regardless of what the data is, so I figured it would be best to keep it all in the same class. The problem I'm running into is that for one set of data, I need the UITableView to use the style UITableViewStyleGrouped, and the rest to use UITableViewStylePlain.
I was able to get this to work in prepareForSegue by using the following if statement:
if([whatToLoad isEqualToString:#"Sets"]){
[[segue destinationViewController] initWithStyle:UITableViewStyleGrouped];
}
else
[[segue destinationViewController] initWithStyle:UITableViewStylePlain];
But then Xcode gives me a warning on both of them of "Expression result unused". Is there something else I can do to achieve the same result without the warning? Or do I have to create a different class for the one set of data that needs a grouped table?
You can have multiple table view controllers in the storyboard file, and set the "Class" to the same UITableViewController subclass for each of them. So you can use the same controller code for each of them, but one has a "grouped" table view and the others have a "plain" table view.
Calling
[[segue destinationViewController] initWithStyle:...]
seems risky to me, because the destination view controller is an already allocated and initialized instance, and initXXX functions are generally allowed to return a different instance.
I am new to Cakephp and indeed OOP, so forgive me if i haven't fully grasped the MVC concept yet. I have search a lot but cannot find an answer - perhaps my way of working below is not correct. I hope you can help.
I am building a site which will have many elements relating to their tables and data. I intend to use a view to pick and choose the relevant elements and any parameters needed.
For example, the homepage of my site will have two elements - a latestusers element and a latestscores element. I am trying to use a view not related to either the users or scores models/controllers, stored in 'other/index.ctp'.
I have tried using set() to pass a variable from the users controller (latestusers action) into the other/index.ctp view, but the viewVars remain empty. Could this be due to scope of the variable (i think it is fine for a view in the users folder, i.e. a view specific to the users controller).
I could achieve what i want to do by using global variables, but i think this is missing the point of MVC/OOP. Would be grateful for any suggestions.
I can include code if need be - it is fairly basic at this stage - but i feel my problem lies with how i am going about things, not the code itself.
Cheers,
James
Yes, the issue is with the scope. If you're going to use variables in the element you'll need to pass them in from your view. So the flow would look something like this
Controller $this->set()s the variable into your current view/layout
Your view/layout calls $this->element with the current element path.
Your element uses those variables.
In number 2 you need to pass your variables as an array of data. This section on the cookbook gives more information : http://book.cakephp.org/view/1081/Elements
<?php echo$this->element('helpbox',
array("helptext" => "Oh, this text is very helpful."));?>
Note - I didn't understand part of the question. Just want to make sure you are passing data to the correct view. You should not be calling the view of another controller in your active controller.
Your other/index.ctp should be an element and that element should be called from your layout.
what is the best way to load dropdown lists from reference/lookup tables for a desktop application?
the application is layed out into 3 tiers. I've built up my entities.
the front end has a form with 6 tabs. and one big save (another discussion :)
Should I load them all when the form is initially loaded? Are there any caching mechanisms I could use?
it is vb.net app on a network drive that is accessed by several users.
it's also worth noting that some reference tables may be updated. Via another form.
thanks
T
Lots of factors. One you need to populate in constructor so the data is there to populate the visual elements. Beware that just because a tab is not visible does not mean it is not loaded when you app starts.
For a static list of strings
public class Library : INotifyPropertyChanged
{
private List<string> dropDown1;
public List<string> DropDown1 { get { return dropDown1; } }
public Library()
{
// use data reader to populate dropDown1
}
}
I know this will get comments that can use something lighter than a List but List has a lot of nice features, easy syntax, and easy to populate. As a next step you could structure as a client server and use some static so the list is populated once and then shared by all. If you have more properties then substitute string with a class. For a dynamic list then in the get you grab the current data from the table on demand. In your get you could hold on to the last list and if the next request is within X seconds then return stale data. It depends on if stale data is acceptable.
There are many other approaches and I do not pretend this is the best. Just putting out a relatively simple example to get you started.
When it gets to hierarchical then things get a little more complex. There you can use ADO.NET table to store the static dependent data and then apply a filter on a view.
If its a web page you don't have to load all tabs on page load.
Desktop i think it will be more easy and it should be like that.
Only when the user click on the tab show the page and hide all the pages
associated for other tabs.
i hope all tab pages values will be on session so that user can go and come back to any tab and your Big Save at last.
Something useful related to your question i found here
http://www.syncfusion.com/FAQ/windowsforms/faq_c93c.aspx
and one more
If you want to reuse code in views Symfony has two basic mechanisms: partials and slots. Partials are nice because you can define global partials (you can use them in any module) and module partials (they are only available in a certain module).
However, in CakePHP you only have regular templates and elements, the latter being available in every view, no matter which model/controller you are in.
Does CakePHP have anything like Symfony's partials? It would nice for example to avoid duplicating forms code for a model. You can have two templates (add and edit) that "include" a common form.
I know you can still use elements, but having a "local" elements directory for a module seems to keep things more organized. Can you suggest a workaround to simulate this?
Thanks!
Why not create a view (module_partial.ctp) inside the controller specific view directory. This will keep the code specific to the controller you want it to pertain to. So lets say you have a books controller. You want to add a BooksController specific form to some of your books views.
Create a view in the views/books/ directory called: search_partial.ctp
The search_partial.ctp will contain the HTML code you want.
Then, in any view, just call:
<?php echo $this->render('search_partial'); ?>
This will not prevent other controllers views from loading it, but it keeps the code base readable and segregated as you expect.
ALL of the globals would go into views/elements.
You can put elements in plugins.
You can do something like $this->element('something'); in the layout and have the element in a plugin and/or the main app views folder like such...
App/plugins/a_plugin/views/elements/something.ctp //only called when a controller from 'a_plugin' is called.
App/views/elements/something.ctp // called if the current plugin does not have 'something.ctp' in the elements folder
For not duplicating views like add/edit look at this https://github.com/infinitas/infinitas/blob/beta/app_controller.php#L389