053 Quick Subform Demonstration

Jump to bottom Edit New page

Amigo edited this page Sep 5, 2019 · 13 revisions

QUICK SUBFORM DEMONSTRATION

Request On The Forum

00:00:00 (Click on these time links to see Youtube video)

I recently had this request on the Forum by Marco, regarding some help with subforms.

"How to generate a subform itself writing in JCB. Where to find the XML. Detail in relation to repeated subform fields in view. How the data of the subform is populated. How posted data of a subform is validated. 00:00:32 How data of a subform is processed and persisted. My assumption is that the above is done as part of JCB and would not require manual construction of xml files. I did googled but found an answer to no avail."

At the moment we have only made tutorials about Repeatable Fields. 00:01:01 Repeatable Fields as such has been discontinued. A tutorial about subforms has not been made yet.

Subforms - Create Fields You Want To Use

First thing first subforms have fields in them that much we know. If we going to go to component for example we open this(Demo) admin view. We are looking at a subform, this is a subform. Each of these little fields is a field in the subform. It's only an ID which you need to add to create 00:01:44 the subform. What you will do if your first create what this(View) is a Custom field that grabs values out of the admin view, you create that View. This(Icon) is a list field, you create list field. This is a checkbox, you create these fields first.

First Create A New Field

That's the first thing you do, you create a field you want to use in the subform. For our purposes I'm going to use existing fields just to demonstrate. We have Description, Mobile, Name. We got a few fields. 00:02:27 First we want to create a new field. I'm going to first open that we have both open and get the IDs. Then click New, then select Subform, it populates your XML for you.

Look At The Tutorials - YouTube - Joomla Component Builder

Now something tells me that if you haven't looked at all the tutorials that is available on YouTube, then a lot of this will not even make sense of what I'm doing, where I'm doing it, and all that. For those that maybe just seeing this video and not watched any of the other tutorials, please go to YouTube and type in Joomla Component Builder and try to find the playlist. There's old playlist full of tutorials. Start at the top working through way down. It so many tutorials many hours that I have spent trying to teach, 00:03:37 and guide people in using this component. I know those tutorials will make you quite able to build amazing things. I'm going to just leave this options, the option list.

Formsource

This formsource if you read here you can add a path to an XML file containing the field. So you can add a custom XML file to your component. How to add custom files to component, a whole another topic. It's also possible within your Joomla Component to add files and folders all those kind of things. But that means this specific source can still be used but you don't need to. If you use the fields 00:04:23 option then you need to remove the source option, only one of them. Oonly the fields or the field formsource, so these are the two options. I see it's currently set to mandatory the fields. But I think you can change that. Going to the field types change that to optional and then that you can select other fields or field formsource. I think the compiler will in any case if it detects there is a formsource it will behave correctly.

Adding IDs

We need to add the IDs so we can come here(Fields) and I want to have Name, it's just 199. 00:05:04 I add 199 and a comma and then let's add something else. Let's add Website 280. Let's do an Email as well and it's 100. We have that in place.

Adding A Description, Maximum, Filter, Showon

We can add a description. We can add a maximum, a filter, a showon. I'm just going to leave this. The validation of these fields, I think that is an area which I haven't looked into. But if I'm correct and also the reason why they moved away from Repeatable Fields, is that every field is validated on its own merit. For example 00:06:05 the Name field, if you create a Name field, you're saying I want this to be a string and it has this filter string value. Since this is part of the XML it will be validated on this. I can be mistaken. I haven't looked at the code. That's what I anticipate it will do. Most cases I would say anticipate that it doesn't and try and do some custom scripting. I'm not going to illustrate that now. 00:06:44 You need to know little bit more about JCB which there are tons of the tutorials to show you how to do custom scripting all around it component and even to do custom scripting anywhere and any area of the component through the custom code area implementation. I'm going to talk more about that. Make sure it got all the spelling right. 00:07:15 I'm going to save this, just give it a Name: Options (test), so I can see it. This Data Type I would make TEXT. The default means that JCB (the Store method) already will detect that this is a Subform and will add the needed 00:07:39 PHP in storing the file and in loading the file into the form again. So that takes care of that. So you don't need to say Json, it will on its own by its default do the correct implementation. In the Data Type so you need to make sure either to click TEXT or MEDIUMTEXT depending on what this value is going to be. Anyway I think for 50 text is quite enough. Save and close.

Adding Options(test) Subforms To Any Admin View - See Video

Let's see we got that field. I'm going to add it to any admin view for now. I'm going to add it to Look View, that we can see it in action. The look view is part of the Demo component. I'm just going to dump it in here. Let's see above tab, full width, details, description. I think let's just add it there. Details also full width, make it the 2nd, and I say 00:08:49 Options(test). Save and close. We've added it to a view. Now I'm just going to compile this component which the view belongs to. Which at this stage it is demo and install it. Now let's go open that Demo component, and open Looks. And here we go, enter name here, enter website address, enter email. We click the green plus button 00:09:26 and our values are there. Let's just save one. Children. We can do I think that's the only one. (see video)Let's do that and by enter those values I'm just going to grab joomlamount.com up here, 00:09:55 paste it in there a few times. I'm going to put [email protected] in Email. To get sort of a feel for it. Save. It saved the values, it loaded it back, it's done all of that. 'Hi there' then save and close. 00:10:45 If we open it again, it shows it up again. We can shuffle it, put number four on top. Save and close. Open again and so it is loading it also correctly. That's a quick demonstration Marco I hope this helps 00:11:09 and getting you able to use subforms with JCB. It's as easy as that.