I am trying to understand the architecture of Play Framework (internally how it works). In other framework like struts we can create index.html page and place in web folder with entry in web.xml file.
In Play the start point is main.scala.html page and all other pages inherited from it by placing all the content wrapped in
#main(title =""){
}
like index.scala.html page. But I couldn't find the place where main.scala.html page is registered to Play framework (no entry in routes file or other place?) or may be I am missing some points here.
So far from the play docs I understood that every scala.html page is basically a method call which sounds right to me.
So my goal is basically create other pages like main.scala.html page which will act as container for other sub pages and arrange my code in more modular way
Sorry if I am asking a dumb question.
Thanks in Advance
According to the Play docs main.scala.html is a layout - just common view which allows to inject HTML from other views and references to it by (content: Html) . main layout just wraps code that index view injected to it. (with optional arguments)
The opposite situation is usage of include or tag so just pointing the place where another view should be placed in the current view (also with optional arguments).
You don't need use them at all - Play doesn't enforce you to do that, you can use separate view (without layout) for each action.
On the other hand if some number of views should share same set of JS and/or CSS then layout(s) are native choice to do that job.
For an example instead of using main.scala.layout you can create ie. frontend.scala.html, backend.scala.html, guest.scala.html so your FE views will use #frontend(){ code...}, BE #backend(){ code... } etc.
You are unlimited in number of layouts/views/tags and other includes ;) All belongs to you. That's Play!
Related
I have a div which displays edit button on hover.
But I don't know how display a partial view representing an edit form in this div only instead of the show view.
I haven't no backbone or client-side js framework plugged in my sailsjs app, I didn't manage to understand how it works, not enough documentation about backbone or angular + sails for me.
Could you help me for rendering this partial view please ?
Thanks by advance,
Cyril
Sails uses ejs-locals in its view rendering code, so in your views you can do:
<%- partial ('foo.ejs') %>
to render a partial located at /views/foo.ejs. All of your locals will be sent to the partial automatically.
One thing to note: partials are rendered synchronously, so they will block Sails from serving more requests until they're done loading. We're considering replacing the code for loading partials to make it asynchronous, but for now it's something to keep in mind while developing your app, especially if you anticipate a large number of connections.
I am facing one issue and I am not sure if what i would like to do makes sense.
In fact I would like to set layout's body onload from one particular view. In my approach onload should not be modified in case user is elsewhere than one view.
Do you know if it is possible at all?
Kind Regards,
You could do that with Route Context. You can add unique class for actions/action that you want the onload to be added on. And then use some javascript library depending on which class the body tag has.
Once you have body classes that are unique for various modules, controllers, and actions you can use those as part of your selectors in jQuery (or whatever JavaScript library you're
using).
Ref: Route Context
Hope it helps
I`m using asp.net mvc 2.0 and trying to create reusable web site parts, that can be added at any page dynamically.
The problem I have is how to load a partial view with all related js and data? Ive tried the following ways to do that:
Use partial view and put all the js into it. In main view use render partial. But to initialize partial view I need to add model to current action method model to be able to make RenderPartial("MyPartialView", Model.PartialViewModel).
Also I do not have a place to put additional data I need to fill my form(like drop down lists values, some predefined values etc).
Use RenderAction, but it seems it have same problems as RenderPartial, except for I do not need to add anything to any other model.
Any other oprions are greatly appreciated.
As I understand it, RenderAction performs the full pipeline on the action, then renders the result - so what is rendered is the same as what you'd see if you'd browsed to the action.
I've used RenderAction to render 'widgets' throughout a site, but in my view they should be independent of the page rendering them, otherwise they're not really widgets and should be part of the rendering page's code instead. For instance, if there's a log in form, you will always take the user to a page that can process the information, no matter what page they are currently on, so this makes for a good widget. Other ways I've used it is to show a shopping basket or advertising. Neither of which are dependent on the page being shown.
Hope this helps a little!
I am experimenting with Zend_Navigation to build breadcrumb for a web site. I created an XML file which lists the hierarchy of pages. Things are working fine for the most part except for pages that have dynamic parameters.
For example, there is a group page which has the URL " www.../groups/gid/1001". The id 1001 is dynamic so it changes for different groups. Because of that I cannot put it in the XML file. In that case, ZF generates a link without including any parameters, which of course won't work.
One solution I found is dynamically injecting the parameters to the Zend_Navigation object. This is working fine except that I need to do it for each action or controller.
Is there a better way to handle it? Does ZF have any classes to do this work?
I will appreciate any feedback.
Thanks!
http://zend-framework-community.634137.n4.nabble.com/Creating-a-dynamic-database-based-Zend-Navigation-item-td660805.html
And/or start reading here: http://framework.zend.com/manual/en/zend.navigation.introduction.html
At which point do you know the group ID to use in the navigation?
If it's early enough, you could simply create your own bootstrap init method to insert the navigation item, just remember to call $this->bootstrap('navigation') at the top of your method, eg
protected function _initCustomNav()
{
$this->bootstrap('navigation');
$navigation = $this->getResource('navigation');
// add custom item
return $navigation;
}
Disclaimer: I'm pretty sure the navigation resource is just called 'navigation'
I have a layout which works fine. This layout contains several partials, which display adverts, a side column a slideshow, etc. All of these are likely to change depending on which page (module/controller/action) of the site you are on.
What is the best way of doing this correctly? In the past I have assigned variables to my view inside my controllers, these are then passed to the partial which then displays the correct slideshow or advert. This seems ugly and not entirely correct for an MVC application.
Does anyone have any other methods of doing this?
Partials are just another view scripts.
My advice is: newer put your logic into the view scripts. Your may store the logic in:
models (remember, that you can create your own models, extending, or not extending the basic database models, eg. data hydrators)
view helpers (with parameters)
services (dependent on models, returning models)
combination of the above
Then use view helper or pass the ready data (model) to different partials.
Tip: Dependency injection is a good thing.