As you maybe aware from the following post I'm new to the Zend framework and web programming so any help is greatly appreciated.
What I want to do is have a page that my users can search for clients stored on the database have the results returned via a table. I know how to do this in a traditional form -> post -> results page manner but I would like to implement the following:
Have two or more Dojo autocomplete combo boxes that the user can enter search criteria into (I've found examples of this on the web and should be ok implementing this.)
Use the text entered into the query the clients table in the DB.
Return the results in a table on the same page without having to redirect, and if possible have the table update the results as the user types into the combo boxes.
for example if the user types "Fa" for example the table will have
"Farrell
"Fagan"
"Farrelly"
As the user continues to type eg "Far" the table will have
"Farrell"
"Farrelly"
As you may have already guessed I need help with parts two and three. I've tried searching using keywords refresh and autocomplete but I've been unable to find anything that comes close to what I need.
Can anyone please provide links to tutorials/examples of how to do this in the Zend Framework. I know code is a lot to ask for but if anyone is feeling generous go ahead.
Just in case it makes a difference I'm using Doctrine ORM to handle my models.
Thanks in advance for any replies.
Graham
The basic gist is this...
Using the AjaxContext helper, add an html context to your action.
Move your table markup into a .ajax.phtml file and replace it in your normal view with a render call
Example
<?php echo $this->render('controller-name/action-name.ajax.phtml') ?>
Add your JavaScript event handlers to the page. When requesting the AJAX content, add a format=html parameter to the request. This will trigger the AjaxContext helper, returning only your table markup which you can then inject into the page.
The best part about this approach is that it degrades gracefully. If JavaScript is disabled or not available, the page reverts to the old school form -> post -> results method.
Have a look at my AJAX pagination post here for some pointers - http://blog.philipbrown.id.au/2011/03/awesome-pagination-with-zf-paginator-ajaxcontext-and-the-html5-history-api/
This uses a page parameter in the same way you want to use your search criteria so it should do as a base reference.
Related
In CRM Online on a customer form is there anyway that you can check if the Associated View for Assets is blank? And if its blank change a field value based on it.
Using JavaScript, 2 ways:
The associated grid is showing records related to your primary record. You can perform the same query the grid is doing using REST which will tell you if there are any records. You can then count the records, and change the field value as required. This approach is better if there are records in the database but which aren't shown in the view for some reason, e.g. view filters.
Access the Grid objects data using getRows(). As above you can then count the records, and change the field value as required. The downside of this is I believe those methods only give you access to the records shown on the form (and not any hidden by filters but still in the database) - but I don't think that that will be a problem here.
Worth bearing in mind that this approach only works client side, e.g. someone has to be actually looking at the form.
If you need to cover the a non-client side approach, e.g. workflows creating records, then you should probably look at plugin development so the changes can be performed server side.
As a side if you just want a simple count shown on form you then you should probably look at Calculated Fields and in particular Rollup fields. You might also be able to run further client side JavaScript from the count.
I'm using CArrayDataProvider (which is basically a customized query i've created) that returns all the results (over 1000) from the database.
I'm using the results in the view but when i'm using the pagination it's going back to the controller for another query.
my question is: is there any way to move on the the next set of results (already part of the result array) without going to the controller and model again.
*My controller has a fairly advanced function which requires variables and parameters which i dont have in the view when trying to use standard AJAX request for the next page.
thanks,
Danny
my question is: is there any way to move on the the next set of
results (already part of the result array) without going to the
controller and model again
Then my answer would be NO if you was using CGridview's pagination. In your situation, you have to make the pagination by yourself instead. You have already selected all of records, and would like to manipulate them on your client side, you really don't need the pagination of CGridview at all.
Pushing all of records into a page on first load is not good idea, but maybe your requirement has asked, I just say that.
I'm trying to implement a dashboard similar to facebook in cakephp (getting posts and post them to timeline and while you press see more it keeps retrieving posts from previous offsets) , but im still confused about the logic and tools , should i use the cakephp pagination class in my implementations.
$this->paginate();
it somehow should be called through ajax accourding to some performance wise
Any helps or suggestions where to start from ?
Thanks All
Don't use paginate
If you paginate something that you are prepending data to - you're going to get data overlapping such that you ask for page 2 - and get the end of, as far as the current user is concerned, the previous page.
Use a timestamp
The normal technique for an endless stream of data is to use a query like:
SELECT *
FROM foos
WHERE created >= $previousLastTimestamp
ORDER BY created DESC
LIMIT 20
Note that while I'm using created in this example - it can be any field that is pseudo unique.
When you first render the page, store the timestamp of the last entry in a javascript variable, then your "get more posts" logic should be:
Make an ajax (get) request, passing the last timestamp
Perform the above sql query (as a $this->Foo->find call)
in your js update the last timestamp so that you know where you are up to for the next time the user clicks "get more posts"
The reason to use a >= condition is that, unless the field you are testing against has unique values, it's possible for there to be multiple rows with the value you're testing for. If you have a naturally-unique field that you are sorting by (id) then you don't need to use greater-or-equal, you can simply use greater-than, and avoid needing to think about duplicate rows.
Here's a reference which explains in more detail why you should handle systems like this avoiding traditional pagination.
I'm a beginner using Joomla 1.5. I have a page which shows articles in a blog format. My objective is to show/filter the articles per year (which isn't that many) based on user input. I'm planning to create a module on the right side, showing a dropdown box of the years, and retrieve the results by passing the year parameter as part of the URL
Ex.
http://sample.com/index.php?option=com_content&view=category&layout=blog&id=39&Itemid=24&year=2011
What is the best, simplest way of passing and processing additional parameters to com_content via URL? Can I do so using extensions such as K2 and flexicontent? If not, can someone advise me what code to add and where, in com_content? If I have to extend com_content itself, can someone guide me how to or point some useful articles?
Appreciate the help. Thanks
I don't know if K2 or flexicontent offer this option, but com_content appears NOT to have this feature.
I would just build a module, create a query and use the table jos_content, select only the fields that you need (like title) and check the field created to be in the year you need.
I have quite a complex class that has three one-to-many relationships and two many-to-many relationships with other classes. What I would like to do is to enable the user to fill all the details one by one - in one step or even better in multiple steps (wizard).
My class is called PeriodicTask - user has to select one Server object (which represents SQL Server instance ) and depending on the selection I need to present the user with the ability to select which databases he wants to use ( the best option would be to use checkboxes). I don't really know how to achieve this.
I would start with creating an action that returns JSON with databases for the selected server. It'll be invoked by jQuery. So far so good, but what to do then?
Should I add <input type="checkbox"> to the form for every database or maybe create another form and post to some other action? How to parse that when the form is submitted? Can I split it somehow into smaller steps ? HTTP is stateless so I somehow need to pass or remember the data that was previously submitted - how?
PS> I'm using Entity Framework here, so part of the class hierarchy is as follows:
You could do it like this:
User selects server instance from
dropdownlist.
After selection dropdownlist fires "change "event, handler of
which loads databases list to form using ajax (your action can provide JSON or html with checkboxes)
User selects checkboxes and presses
submit button
On submit you collect
checked item and post to action
using javascript
I would look at creating helpers for each of the options that would be self contained, they could maintain the state themselves.
Another cool option would be to create a tree view, where the root level is your server and next level is database. Load the data into a ViewModel so that it can be used as the data source for a tree view. It seems like a nice interface for what you have.
Believe it or not the Microsoft site is a great place to start when learning MVC
http://www.asp.net/mvc