I'm trying to learn some basic knowledge of jsp, suppose that I have a project, in this project, after signing in, I have a Main.jsp with a calendar or a dropdown list in it, when selecting a date, I'll change the UI based on the data from database.
I can put all relevant data into request after signing in, and use JSTL in Main.jsp, but if the data is huge, this doesn't sound like a good idea, right?
Back to the old age when there's no JSTL or AJAX, how does jsp developer deal with this? And what is the best practice nowadays?
Thanks.
If you are talking to render about without JSTL or AJAX, the only option i see is to submit/send the form to server and get it back with updated view, but yes it will cost a lot in terms of performance.
I think for your use case:
1) you can get the data from server via AJAX on every update,
2) or, if the data is not customer dependent and is fixed in terms of UI, you can load it lazily in background, and change the view immediately on the user action.
I've an existing MVC3 project that implements a certain functionality, this project has it's own views, and a separate Database.
now I'm required to use the same functionality inside one of my orchard project,so I thought that I can host this solution in somewhere and view it inside an iframe or something.
Am I thinking right?,
is this the correct step to take in order to achieve this requirement inside Orchard?
to make it more clear, all I need to do is to view this solution and interact with it's controls and views from a hosting page inside orchard, and the subsequent requests should be handled by my solution in order to hit it's own data store and get back with the requested data in order to be displayed to the user.
any help would be appreciated.
Update:
thanks for Bertrand Le Roy for his answer, I can now view my solution inside my
orchard website.
I came in to one more HUGE problem, which is that my application can no longer connect to my external database.
I've a DB that is hosted in some where else, and I'm using EntityFramework to deal with it.
the problem is that if I put the connection string inside my module web.config, or main orchard web.config, I run into several types of errors like:
"System.Reflection.TargetException: Object does not match target type."
or
"System.Data.MetadataException: Unable to load the specified metadata resource."
My question is: How could I pass my connectionstring correctly to my solution, assuming that I'm using Entity framework as my ORM.
Many thanks.
You will need to put it into a module.
You will have to move route definitions to a Routes.cs file (look at any existing such file for examples).
You will also need, in order to access your data store, to opt out of the ambient Orchard transaction around the data access code (using (var scope = new TransactionScope(TransactionScopeOption.Suppress))).
If you are using dependency injection, you may have some work to move that to the Autofac-based way of doing things in Orchard.
If you want your work to appear seamlessly in the Orchard admin, you may want to decorate your admin controllers with the Admin attribute. If you want your front-end to use the current theme, you'll have to add Themed attributes and maybe refactor your views so that they only emit HTML for the content zone instead of for the whole page.
Add a manifest (module.txt) to your module folder and you should be good to go.
I'm new to django and I'm trying to figure out how to create custom actions inside admin site.
Let's say I want to create some sort of custom form with fancy ajax based ui.
What I would normally do in .NET/PHP/Ruby is prepare some js code and a service that will be called via ajax and return json or even html.
A more concrete example could be an auto complete box to manage a many to one relationship. What should I do to build such a system inside the django admin site? (I know there are a couple of ready to use solution for this. But I'm not interested: just for study purposes).
In this particular case (a fancier widget), ModelAdmin has several useful hooks like ModelAdmin.form and ModelAdmin.formfield_overrides.
Creating a custom Django Form Widget is more elegant, but if the widget is pure JS (like many jQuery widgets), most of the time it is not worth - just override the change_form.html admin template for the Model in question.
You can easily change the form and the template of the ModelAdmin.
So you're free to inject any CSS and JS you like. Take look at this presentation to get the basic idea.
i have created a component using this http://www.notwebdesign.com/joomla-component-creator/index.php component creator how can i add a simple registration form in that and also make its backend looks like the other component
The name of that utility is a little misleading since it only creates the structure of a component. If you want to add functionality to the structure created you will need to actually put in the code that does what ever you need it to do. Think of this as the foundation and framework of a house. You actually have to put the walls up and furnish it.
It would probably be helpful to understand the files that have been created for you so you know what needs to be added. I would recommend learning how to build a component from scratch first. Joomla has pretty good documentation on that here - http://docs.joomla.org/Developing_a_Model-View-Controller_Component_-_Part_1
i have develop the Lots of component from this site http://www.notwebdesign.com/joomla-component-creator/index.php .
1) First Create the components and give the name and crrate the require field fo the registration from .and save the components then after the download this components.
2) Install the components in your joomla site.
3) Go to the Fornt-end view components folder. and create a form in the default.php page and save and update operation query is written in the model .
Your Registration page is ready.
This tutorial is the best I have come across so far. It will hopefully guide you to understand the MVC structure that the component generating site delivers to you.
I am actually the developer of the Component Creator you have used. It only creates the MVC files and structures needed to quickly create a component. You still need quite good PHP skills to develop a fully working component.
The component creator helps developers with the tedious tasks of building the framework.
I want to create my own form that are submitted and values of that form will be stored in joomla database. How can i used the Joomla connection code to interacte with the joomla database.
If you just want to get your work done, there are some components already avaiable in Joomla Extension's website to your form's needs. CkForms is a good one, you can create simple forms with it that are automatically saved in the database (supports upload of files too).
If you want to learn how to write extensions in Joomla, you should read Joomla Official Documentation website.
Extensions in Joomla are divided in "Components", "Modules" and "Plugins". More informations about these differences can be found here and here.
What you're trying to achieve sounds a "component" to me. Downloading the CkForms and reading it's source code should get you started to Joomla's way of writing components.
EDIT: Joomla has a huge API with a lot of features. It has a database module of it's own, with insert methods and such. Reading Joomla's API website before implementing your component it's a good idea to avoid "reinventing the wheel" and it's a good practice since those methods are extensively tested by all Joomla users.
The JForm class helps you build forms.
Documentation can be found here:
joomla CMS: http://docs.joomla.org/API16:JForm
joomla API: http://api.joomla.org/11.4/Joomla-Platform/Form/JForm.html
This class provides you with ready to use form elements and form loading and/or processing methods
This class includes validation methods, date picker control, color picker, etc.
Of course, as another mentioned above, if you are building a module, component, or application, you will need to learn how to to develop a module, component or application. Of these three, the module is the easiest to implement.
The application gives you much freedom b/c you are not constrained to the CMS paradigm, front and back end complexities. However, there is little documentation about how to develop applications with Joomla framework b/c joomla as a framework is relatively new
This tutorial gets you started understanding how to use JForm to create a form in Joomla: http://www.ostraining.com/blog/how-tos/development/getting-started-with-jform/
Or you could just create add a html module to any position and then write the form in html i.e.
<form method="post" action="mycreatedpage.php"> <input type="text"/> <input type="submit">
Now just create a page that handles the code by emailing or inserting into db. I havent tried it but i think it should work.
Looks like everyone already told you almost everything I know except for the component creator. Very easy to use, and it follows Joomla standards. Will get you up and running within minutes.
I have got good working experience with Joomla RSForm Pro. It has got options for
validation
user email/admin emails on submit
file uploads
and many more
Good tutorials too. Get started with http://www.rsjoomla.com/support/documentation/view-knowledgebase/21-rsform-pro.html
Good luck!
Create View.
Create Model.
Create Table.
Create Controller ( if Needed ).
Create Form xml file.
Go here for more information:
http://docs.joomla.org/Standard_form_field_types
Take a look at the Chronoforms extension - does more than you want.
You have two options:
Use an already built custom form extension
Create your own custom form extension (or outsource it)
Now if you only want to modify the user registration form, then you can do some PHP customization to accomplish your goal.
Making forms in Joomla can be done in a couple of ways.
If you just wanted a contact us, you can just create a page with a menu item for the User contact form. This gives you a page with a Members address and contact form. So all you would need to do was add the user as the company of the websites home address and email. But the form is very basic, name, title, textarea for message.
Next up from that you could just make a Custom HTML module add add a form to it in plain HTML like +Sean said above this, you would need to code in PHP your own form process script. You would not get error in form data checking unless you also wrote it.
Next you might rather look on the Joomla Extension Directory JED for one of the good extensions for 3 and 2.5 Joomla RSForms!Pro is good, and can do all we have needed. This lets you add fields one by one and move your form around. Then can auto generate or custom the html of the form.
You can easily create your own forms with Fabrik
Chronoforms are now a days a very popular solution for custom forms in joomla. Chornoforms support twitter bootstrap also. In simple 5 steps you can create a contact form with unlimited fields and also embed various function like DB save, Email, Thanks Message, Redirection on any page. There is events and events will have particular events.
Also possibility of extension of Normal joomla registeration. It will not extend the core registration but at the time of registration you can take various information from users.
I would use Chrono Forms, they work really well and are easy to use.
Download here
Here is a full tutorial on the new Chronoforms 5 to help you get started quickly and understand most of the features available.
CLICK HERE
You can use plugin to insert external php form in content. It is easy and you don't need to make plugin etc. Please use this.
I suggest you to use breezingforms: http://crosstec.de/en/extensions/joomla-forms-download.html
It's one of the best solutions for custom form creation in joomla.