I know there are several similar topics around but I read and tried most of them but still can't figure out how to do this.
I have a written a component in Joomla 2.5 and it works so far. I have different views and I can load the views using the controller.php.
One of the views shows a table out of my data base (data about teams).
Now I'd like to have another layout of the same view which would display the data base table as a form so can change the content.
That's the file structure:
views/
- teams/
- - tmpl/
- - - default.php
- - - modify.php
- - view.html.php
That's out of the view.html.php file:
...
// Overwriting JView display method
function display($tpl = null) {
...
$this->setLayout('modify');
echo $this->getLayout();
// Display the view
parent::display($tpl);
}
I tried different combinations of setLayout, $tpl = ..., default_modify.php, etc.
but I always either get the default layout or some error like 'can't find layout modify'
I load the site with .../index.php?option=com_test&task=updateTeams
And the controller.php looks like this:
function updateTeams(){
$model = $this->getModel('teams');
$view = $this->getView('teams','html');
$view->setModel($model);
$view->display();
}
I had a similar problem, I created some kind of user profile view and wanted them to be able to edit the fields without having to create a new model for it (would have similar functions, hate redundancy...). What worked for me is to simply call the layout like this:
index.php?option=com_mycomponent&view=myview&layout=edit ("edit" would be "modify" in your case)
To do this I didn't touch the view.html.php (well I did at first but I didn't have to.). And you don't need to use the controller either. If you want to load the modify view, just add a button to your regular view linking to the modify layout. No need to change anything else.
I happen to have written a blog article about it, check it out if you want: http://violetfortytwo.blogspot.de/2012/11/joomla-25-multiple-views-one-model.html
Hope this helps.
Ok this is the problem .. you don't want another layout, you want a new MVC triad that is based on forms rather than rendering. So if you look at any of the core content components you will see in the backend they have a mvc for say ... contacts and one for contact and contact is the editor. If in the front end you will notice that com_content and com_weblinks have mvc for artice/weblink and then separate ones for editing.
You need a really different model and layout and set of actions for editng than for just rendering.
Old topic, but it might still help.
It seems that when one wants to change the layout, the $tpl must not be included in the display() or must be null.
So the previous code would be:
function display($tpl = null) {
/* ... */
$this->setLayout('modify');
// Display the view without the $tpl (or be sure it is null)
parent::display();
}
Related
Basically what I'm trying to do is to implement a little chunk of html generated by a controller in a separate view into one main view. The problem is that I need custom styles for that little chunk of html and I can't know where I'll have to include it (manually), so I'd like the css to get appended to the file calling the function somehow from the controller when the method is being called.
More detailed explanation:
I'm programatically listing small custom panels to display some properties of each instance of my model (in this case, a window). In the main view, where I'm listing, there are a lot of them, so I decided to make a separate view file to create the panel and then simply return it via a function in the controller.
So in the home.blade.php I do as follows:
#foreach($order -> windows as $window)
{!!$window->drawPanel()!!}
#endforeach
Then in my Window controller I've got a method to return the view where the window is being displayed (!differently depeding on it's properties!) like that:
public function drawPanel()
{
return view('dogrami.windowPanelThumbnail', ['window' => $this]);
}
And then in the windowPanelThumbnail file I'm displaying accordingly the html needed. The problem is: to build my panel, I use some custom css which I can't include in the builder view, because it's getting called like 100 times.
The question is - how to append the style to the file that called the method in the controller.
Basically I'd like to do as follows:
public function drawPanel()
{
//$cssFile = pathToMyCssFile;//that's the instance containing my custom css
//$callingFile = ...//somehow retrieve an instance to the file that called that method.. in this case - the path to 'home.blade.php'
//if($calling.File already has the $cssFile included in it's header)
//don't do anything
//else
//$callingFile -> somehow include the $cssFile instance in the header
return view('dogrami.windowPanelThumbnail', ['window' => $this]);
}
I have no idea if it's possible so that's what I'm asking. Or if you have better ideas of how to achieve that, I'd be really thankful!
If you want to include your css dynamically you can use stacks https://laravel.com/docs/5.4/blade#stacks this way :
$links = ["all", "the", "links", "to", "css", "files"];
return view('yourview', [/*allyourdata, */, 'stylesheets' => $links]);
And in your view you can do :
#push('stylesheets')
#foreach($stylesheets as $stylesheet)
<link rel="stylesheet" type="text/css" href="{{ $stylesheet }}">
#endforeach
#endpush
And add #stack('stylesheets') in the head of your html
PS : a stack is a lifo data structure (last in first out), meaning that if you do several #push, the last one you do will be the first one echo'ed
I'm making a custom module for PyroCMS, and I want to get the section menu working with regard to applying the current class. The CMS php, which I don't want to change looks like this:
<li class="<?php if ($name === $active_section) echo 'current' ?>">
When I'm viewing /admin/courses/ this is correct, and the first navigation element has the class, current.
$name is taken from the language file, as set up in details.php.
$active_section is taken from the view, and is equal to
$this->_ci_cached_vars['active_section']
However when I view /admin/courses/chapters/, 'courses' is still determined by the system to be the current section, so the navigation is confusing.
What I need is a way of changing the value of $active_session in the view acording to which function of the controller (index, chapters or pages) is being used.
I've tried changing the value of $this->_ci_cached_vars['active_section'] in each controller function, but that doesn't work. Any ideas?
I'm sure there's something basic I'm missing completely.
Got it.
I'm using multiple methods in one controller, and the 'protected $section = 'courses'; line, which happens before the index method, was setting the section for everything.
It couldn't be set a second time within another method, but there is a way to define a section within a method.
$this->template->active_section = 'section';
Starting my method as follows gave me what I wanted.
public function chapters(){
//Set active section
$this->template->active_section = 'chapters';
...
}
I am currently involved in the development of a larger webapplication written in PHP and based upon a MVC-framework sharing a wide range of similarities with the Zend Framework in terms of architecture.
When the user has logged in I have a place that is supposed to display the balance of the current users virtual points. This display needs to be on every page across every single controller.
Where do you put code for fetching sidewide modeldata, that isn't controller specific but needs to go in the sitewide layout on every pageview, independently of the current controller? How would the MVC or ZF-heads do this? And how about the rest of you?
I thought about loading the balance when the user logs in and storing it in the session, but as the balance is frequently altered this doesn't seem right - it needs to be checked and updated pretty much on every page load. I also thought about doing it by adding the fetching routine to every controller, but that didn't seem right either as it would result in code-duplication.
Well, you're right, having routines to every controller would be a code-duplication and wouldn't make your code reusable.
Unlike suggested in your question comments, I wouldn't go for a a base controller, since base controllers aren't a good practice (in most cases) and Zend Framework implements Action Helpers in order to to avoid them.
If your partial view is site-wide, why don't you just write your own custom View Helper and fetch the data in your model from your view helper? Then you could call this view helper directly from your layout. In my opinion, fetching data through a model from the view doesn't break the MVC design pattern at all, as long as you don't update/edit these data.
You can add your view helpers in /view/helpers/ or in your library (then you would have to register your view helper path too):
class Zend_View_Helper_Balance extends Zend_View_Helper_Abstract
{
public function balance()
{
$html = '';
if (Zend_Auth::getInstance()->hasIdentity()) {
// pull data from your model
$html .= ...;
}
return $html;
}
}
Note that you view helper could also call a partial view (render(), partial(), partialLoop()) if you need to format your code in a specific way.
This is a pretty simple example, but to me it's enough is your case. If you want to have more control on these data and be able to modify it (or not) depending on a particular view (or controller), then I recommend you to take a look on Placeholders. Zend has a really good example about them here on the online documentation.
More information about custom view helpers here.
When you perform such a task, consider using the Zend_Cache component too, so you won't have to query the database after each request but let's say, every minute (depending on your needs).
What you are looking for is Zend_Registry. This is the component you should use when you think you need some form of global variable. If you need this on EVERY page, then you are best adding it to your bootstrap, if you only need it in certain places add it in init method of relavent controllers.
application/Bootstrap.php
public _initUserBalance()
{
$userId = Zend_Auth::getInstance()->getIdentity()->userId;
$user = UserService::getUser($userId);
Zend_Registry::set('balance', $user->getBalance());
}
application/layouts/default.phtml
echo 'Balance = ' . Zend_Registry::get('balance');
That wee snippet should give you the right idea!
In this case, I usually go with a front controller plugin with a dispatchLoopShutdown() hook that performs the required data access and adds the data to the view/layout. The layout script then renders that data.
More details available on request.
[UPDATE]
Suppose you wanted to display inside your layout the last X news items from your db (or web service or an RSS feed), independent of which controller was requested.
Your front-controller plugin could look something like this in application/plugins/SidebarNews.php:
class My_Plugin_SidebarNews
{
public function dispatchLoopShutdown()
{
$front = Zend_Controller_Front::getInstance();
$view = $front->getParam('bootstrap')->getResource('view');
$view->sidebarNews = $this->getNewsItems();
}
protected function getNewsItems()
{
// Access your datasource (db, web service, RSS feed, etc)
// and return an iterable collection of news items
}
}
Make sure you register your plugin with the front controller, typically in application/configs/application.ini:
resource.frontController.plugins.sidebarNews = "My_Plugin_SidebarNews"
Then in your layout, just render as usual, perhaps in application/layouts/scripts/layout.phtml:
<?php if (isset($this->sidebarNews) && is_array($this->sidebarNews) && count($this->sidebarNews) > 0): ?>
<div id="sidebarNews">
<?php foreach ($this->sidebarNews as $newsItem): ?>
<div class="sidebarNewsItem">
<h3><?= $this->escape($newsItem['headline']) ?></h3>
<p><?= $this->escape($newsItem['blurb']) ?></p>
</div>
<?php endforeach; ?>
</div>
<?php endif; ?>
See what I mean?
I'm loading javascript files in the bootstrap as usual, but there's a file that I want to have included only if it's a page that has a form
->appendFile('http://myurl.com/js/formscript.js');
Is there a way to detect the page being loaded, from the bootstrap so I can decide whether or not to include this file?
I thought about passing a variable from the Form to the view, and then checking for that variable in the bootstrap, but it's not working.
This would be in my form
$layout = new Zend_Layout();
$view = $layout->getView();
$view->formscript = true;
and this would be in my bootstrap
if ($view->formscript)
but var_dump($view->formscript) give me null, so any other ideas to activate js files only in specific conditions?
To include javascript files in a particular pages alone, add the following code in those pages(I mean view scripts - *.phtml).
<?php
$this->headScript()->appendFile('http://myurl.com/js/formscript.js');
?>
Similarly, to add CSS files to a particular page, do the following.
<?php
$this->headLink()->appendStylesheet('http://myurl.com/styles.css');
?>
It is possible, but you do not need your bootstrap. You can just access the variable from your layout:
//form
$view = Zend_Layout::getMvcInstance()->getView();
$view->formscript = TRUE;
//layout
if($this->formscript)
{
$this->headScript()->appendFile('http://myurl.com/js/formscript.js');
}
echo $this->headScript();
Do not use getView() in your form as it will return the view object for the form, not for your application. This has tripped me up more than a couple of times >.>
Your idea to set a flag - something like $view->hasForm - in your view seems like a pretty reasonable approach. But as others have noted, it shouldn't be the form itself that attempts to set the flag since it doesn't really have access to view object until rendering time.
Instead, wherever you place a form into your view - probably in a controller, perhaps even in a front controller plugin - simply set your flag there.
Then your view script or layout can call $this->headScript()->appendFile() if the flag has been set.
Why not move over appendFile() to your form class (of course if you use Zend_Form), you would be sure that your JS line will be created only in the same time as your form. The place for this line is good in init() as well as in render()
class Your_Form extends Zend_Form {
public init(){
$this->getView()->appendFile('http://myurl.com/js/formscript.js');
[...]
}
}
Is there a way to load a controller from a view ?
Here is what i am affter..
I want to use one view multiple times, but this view is being loaded by separate controller that gives the view, information from the db.So becouse of that information from the model i can't just set $this-load->view(); and etc. Is there a way to do this thing, or it has a better way ?
I think a lot of sites face similar challenges, including one I'm working on that loads the same db content into the sidebar on almost every page in the site. I implemented this with the combination of a library and a helper:
Put the data logic into the library (mine is named common.php). In addition to interfacing with the database, you may want the library to store the data in a local variable in case you want to reference it multiple times on a single load.public function get_total_items()
{
if ($this->_total_items === NULL)
{
$row = $this->ci->db->query("SELECT COUNT(*) FROM items")->row();
$this->_total_items = $row[0];
}
return $this->_total_items;
}
Create a helper to load the library. (Don't load libraries within a view!) I have MY_text_helper that loads the library and returns the data:function total_items()
{
$CI =& get_instance();
return $CI->common->get_total_items();
}
Call the helper function from within the view.<p> Total items: <?php echo total_items(); ?> </p>
Simply put, you can't and shouldn't load a controller from a view. That sad, I understand your frustration because you want to re-use the model-pulling/acting logic in the controller across multiples views.
There are various ways of doing this;
Re-use the models. Your models should be very simple to select data from, and should be sleek, but if you're doing the same thing over and over it does seem stupid. In which case...
Use a controller as a "main container" and extend upon it from any logic you need. So your basically using the controller as a template, which pulls data down from the model, loads the appropriate view.
MVC doesn't work that way ... Just re-use the model - that's why it's separate from the controller. If that doesn't fit your needs, you should probably implement a library that does the logic.
I would use a library.
That way you can wrap up the data retrieval in a reusable package that you can call from any controller you like.
just do this
if you controller named controller1
put a link in view just like that
http://your-site.com/index.php/controller1/
if you want specific function add it to your url
http://your-site.com/index.php/controller1/myfunction
that's it