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Updated 044 Hello World Component with Joomla Component Builder Creator Extended (markdown)

Amigo 2019-08-23 16:37:38 +02:00
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044-Hello-World-Component-with-Joomla-Component-Builder-Creator-Extended.md

@ -481,7 +481,7 @@ The next step is to make these items editable. I am going to copy and paste most
[01:33:57](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h33m57s)
In the first area this checkout value needs to be set on the page. Make sure about this(user.>id) value because the users authority should be checked on the page. Check whether the user is set on the page. I am going to move some of this code and go to the front end of the code area.
In the first area, this checkout value needs to be set on the page. Make sure about this(user.>id) value because the user's authority should be checked on the page. Check whether the user is set on the page. I am going to move some of this code and go to the front end of the code area.
### Add The Option To Edit In Both List And Single View
@ -493,7 +493,7 @@ The option to edit the item is added in both the List as well as the Single view
[01:34:52](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h34m52s)
In the Site view of the List area I am going to PHP and add PHP (custom view script). It says add PHP script to the head of the file. Paste this link in here and it may be seen that it has this view 'greetings', and the task is 'greeting edit'. That is the task and it is going to be available in the edit variable. That is the first part of the code we want up on the page. [01:35:29](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h35m29s) Now for the rest of it go back to the Admin View again, the back end. We need to grab these as well( follow on video). Before grabbing them let's open the corresponding site view to look at some of the code. Here is the 'greetings'. [01:35:55](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h35m55s) Open this 'view.html.php' and see that the user is already being loaded onto the page. This is the '$this.>items'. It is always good for you to go and look at the code the JCB is writing. Seeing the code is what makes you familiar with how things work and also helps you to detect when something does not work and how to fix it.
In the Site view of the List area, I am going to PHP and add PHP (custom view script). It says add PHP script to the head of the file. Paste this link in here and it may be seen that it has this view 'greetings', and the task is 'greeting edit'. That is the task and it is going to be available in the edited variable. That is the first part of the code we want up on the page. [01:35:29](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h35m29s) Now for the rest of it go back to the Admin View again, the back end. We need to grab these as well( follow on video). Before grabbing them let's open the corresponding site view to look at some of the code. Here are the 'greetings'. [01:35:55](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h35m55s) Open this 'view.html.php' and see that the user is already being loaded onto the page. This is the '$this.>items'. It is always good for you to go and look at the code the JCB is writing. Seeing the code is what makes you familiar with how things work and also helps you to detect when something does not work and how to fix it.
[01:36:29](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h36m29s) Since the 'user' is on the page and it is seen in the Site Admin area that it is accessing the user in the same way. Using this($this.>user) as an object and ask him whether it has authority on the core 'manage' to check-in. [01:36:48](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h36m48s)Then it also checks and gets the checkout user details. The checkout user is not on the page.
@ -501,22 +501,15 @@ In the Site view of the List area I am going to PHP and add PHP (custom view scr
[01:37:06](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h37m06s)
We are going to get those values by going to the Dynamic Get and make sure that those values get brought to the page as well. Go to 'ListGreetings' and again like before copy all those values and just tweak away and then back. The values that are needed to make sure are not by itself added to the selection.(See Video) [01:37:44](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h37m44s) You can add the values that are needed because you know it is in the Database. This View Table Selection only shows at this stage the actual values what it knows belongs to the view. I need to update this in JCB by a little tweak which I have not done. So it is not showing the 'checked_out' and 'checked_out by' values. You can type it in. [01:38:16](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h38m16s) Those values will also be brought to the front of this view. The 'checked_out' and the 'checked_out time', we do not need the 'check_out_time'. Only the 'check_out', basically who checked it out. [01:38:43](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h38m43s) Save and close. The Dynamic Get has been updated and that means the values are on the page and can move our code into place. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
We are going to get those values by going to the Dynamic Get and make sure that those values get brought to the page as well. Go to 'ListGreetings' and again like before copy all those values and just tweak away and then back. The values that are needed to make sure are not by itself added to the selection. (See Video) [01:37:44](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h37m44s) You can add the values that are needed because you know it is in the Database. This View Table Selection only shows at this stage the actual values that it knows belongs to the view. I need to update this in JCB by a little tweak which I have not done. So it is not showing the 'checked_out' and 'checked_out by' values. You can type it in. [01:38:16](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h38m16s) Those values will also be brought to the front of this view. The 'checked_out' and the 'checked_out time', we do not need the 'check_out_time'. Only the 'check_out', basically who checked it out. [01:38:43](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h38m43s) Save and close. The Dynamic Get has been updated and that means the values are on the page and can move our code into place.
### Editing Echoing Edit Link
[01:38:57](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h38m57s)
Add it in the 'Default View' for each loop since this code is working with the item itself. With the code in there, the user is called, and check the item 'check_out'. [01:39:21](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h39m21s) Make sure the user 'id' is 0. Check whether to 'check_out' user. To get the rest of the code go to the Admin View to this(follow on video) area and just copy that. A few adaptations is necessary because the front end is a little different from the back end. [01:39:54](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h39m54s) The back end only displays an edit view. The front-end displays a read view. We want to make it a little different. You can pause the video to see some of the things that I have done here. I am editing 'echoing' the edit link.,,,,<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Add it in the 'Default View' for each loop since this code is working with the item itself. With the code in there, the user is called, and check the item 'check_out'. [01:39:21](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h39m21s) Make sure the user 'id' is 0. Check whether to 'check_out' user. To get the rest of the code go to the Admin View to this(follow on video) area and just copy that. A few adaptations are necessary because the front end is a little different from the back end. [01:39:54](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h39m54s) The back end only displays an edit view. The front-end displays a read view. We want to make it a little different.
You can pause the video to see some of the things that I have done here. I am editing 'echoing' the edit link. I am adding the item and put in a little icon that you can click. Then checks whether you have permission to edit this item. [01:40:34](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h40m34s) If we were to save this and refresh the homepage, it should not change anything because the public does not have permission to edit it at this stage. That icon should be 'pencil' not 'edit'. Save this and compile it to see it in action. Install it and reload the home page and as you can see it does not show those little buttons. If we go to the back end and go to options, we change that the public is allowed to edit. Let's do that so that they are allowed to edit. Open the front again. We now see that it shows the edit pencil. [01:41:48](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h41m48s) If we click on that, we see that it opens the edit area where it can now add the exclamation. Click on save. Save and close. It tells us that the message was saved successfully. [01:42:12](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h42m12s) If the greeting is opened, it can be seen that it has the exclamation. Our attempt to integrate or to make our items editable on the front end within the control of permission groups has worked very effectively. If the permissions are revoked and the page refreshed those links will be gone. [01:42:35](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h42m35s) Even if somebody were to try and circumvent the system by having in the URL paste in the link to edit that specific item and it will indicate that it is not permitted. [01:42:57](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h42m57s) The permissions structure is armed and will protect the item from being edited by that group. The Public is allowed to edit but can we also permit it to create? <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
@ -524,31 +517,14 @@ Add it in the 'Default View' for each loop since this code is working with the i
I'm adding the item and I'm putting in a little icon which then you can click. I'm checking whether you have permission to edit [01:40:34](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h40m34s) this item. If we were to save this and refresh the homepage, it should not change anything because the public doesn't have permission to edit it at this stage. That icon should be pencil not edit. Let's save this and compile it to see it in action. Install it and we reload the home page and as you can see it doesn't show those little buttons. If we go to the back end [01:41:17](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h41m17s) and we go to options, we change that the public is allowed to edit. Let's just do that they allowed to edit. Let's open the front again. We know see that it shows the edit [01:41:48](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h41m48s) pencil. Let's click on that and we see it opens the edit area where it can now add the exclamation and click on save. Save and close. It tells us that the message was saved successfully. If we now [01:42:12](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h42m12s) open that greeting, we see that has the exclamation. Our attempt to integrate or to make our items editable on the front end within the control of permission groups, has worked very effectively. If we again revoke the permissions and [01:42:35](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h42m35s) refresh the page, and then suddenly those links are gone. Even if somebody were to try and circumvent the system by having in the URL paste in the link to edit that specific item and it will say that it's not permitted. [01:42:57](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h42m57s) The permissions structure is armed and will protect the item from being edited by that group. Again we gave the Public Permission to edit but now the question is can we also give it permission to create?
### Add Option To Create
[01:43:17](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h43m17s)
Going back to greetings. Let's add an option to create an item. If I go and add this button with a link to create an item, but I'm not adding any checks around it. You basically need the same kind of check as you've using here($canDo->get9core edit') except that there are some [01:43:42](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h43m42s) shortcut. Let me show you. Around the button we added this php that checks the users authority to create for the core of this component. If yes then it will show the button, if no the button will not show. That is to control the visibility of the button. Let'05s save this and then compile and install [01:44:11](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h44m11s) to see it in action. We see the button doesn't show and that is because currently we've got a component set that the public cannot create. If we allow creating for the public [01:44:40](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h44m40s) and we refresh the page. You will see that it shows. If we click on it, it will open an area where we can create an item. Here we can set a new name [01:45:06](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h45m06s) and save and close. We get this 'Save not permitted'. This must mean that we haven't granted enough permissions for the public user to create an item. Giving it the option to create an item is not enough because there are fields that [01:45:28](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h45m28s) you need also access too before you can create an item. Let's try again. But first giving it more permissions. We've granted it all the permissions that it needs and go to the front. Now we click 'Create A Greeting' save and close. [01:45:53](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h45m53s) We have saved the item, we can again edit the item, we can close, and we can view, as you can see it's all working as expected. Our Hello World tutorial is nearly at it's end. [01:46:16](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h46m16s)
Going back to greetings. Let's add an option to create an item. If I go and add this button with a link to create an item, but I'm not adding any checks around it. You need the same kind of check as you've used here($canDo->get9core edit') except that there is some [01:43:42](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h43m42s) shortcut. Let me show you. Around the button, we added this PHP that checks the user's authority to create for the core of this component. If yes then it will show the button, if no the button will not show. That is to control the visibility of the button. Let'05s save this and then compile and install [01:44:11](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h44m11s) to see it in action. We see the button doesn't show and that is because currently, we've got a component set that the public cannot create. If we allow creating for the public [01:44:40](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h44m40s) and we refresh the page. You will see that it shows. If we click on it, it will open an area where we can create an item. Here we can set a new name [01:45:06](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h45m06s) and save and close. We get this 'Save not permitted'. This must mean that we haven't granted enough permissions for the public user to create an item. Giving it the option to create an item is not enough because there are fields that [01:45:28](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h45m28s) you need also access too before you can create an item. Let's try again. But first giving it more permissions. We've granted it all the permissions that it needs and go to the front. Now we click 'Create A Greeting' save and close. [01:45:53](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h45m53s) We have saved the item, we can again edit the item, we can close, and we can view, as you can see it's all working as expected. Our Hello World tutorial is nearly at its end. [01:46:16](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h46m16s)
### Demonstrated - List Items, Open Individual Items, Edit Items, Create New Items
We have within this tutorial demonstrated to you how to create a Hello World Component. List its items, open individual items, edit those items, as well as creating new items. All based on the permissions of structures of the Component. [01:46:40](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h46m40s) If we where to change these permissions back to not allowed and we now refresh the front, we'll see that we can only view the items. Even more if we go back and we want to control the actual viewing of the Greeted items, not be visible to the public but maybe only to managers we could do that. [01:47:06](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h47m06s) You can manage that kind of control over your items without a lot of custom code. If you click on it, it will tell you don't have authority to view it. You can add Custom Scripting to remove the link that it doesn't even look clickable if the person doesn't have access to view it. [01:47:32](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h47m32s)
We have within this tutorial demonstrated to you how to create a Hello World Component. List its items, open individual items, edit those items, as well as creating new items. All based on the permissions of structures of the Component. [01:46:40](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h46m40s) If we were to change these permissions back to not allowed and we now refresh the front, we'll see that we can only view the items. Even more, if we go back and we want to control the actual viewing of the Greeted items, not be visible to the public but maybe only to managers, we could do that. [01:47:06](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h47m06s) You can manage that kind of control over your items without a lot of custom code. If you click on it, it will tell you don't have the authority to view it. You can add Custom Scripting to remove the link that it doesn't even look clickable if the person doesn't have access to view it. [01:47:32](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h47m32s)
We gone so far over the time trying to demonstrate to you some of the basic principles of setting up a Hello Component in JCB. I trust you've enjoyed this tutorial. By far it doesn't usually take this long to build a Hello World Component. In fact there is a older tutorial where we managed to build a Hello World Component in a very shorter time. [01:48:02](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h48m02s) I illustrated and demonstrated and explain it a little more here to help you guys along to build components with JCB and that you'd realize that JCB is a very powerful application. I mean I haven't even gone to the code this time, and shown you all that it's written, but I mean just from the compiler we already got 13000 lines of code. Which would have taken you 5-8 hour days to write. [01:48:37](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h48m37s) Which is about 39 hours and I think for a basic component that's quite a lot of code and it's because that it's already integrating a lot of permissions structures and version control. I mean if I was to open the Greetings and open James, [01:49:03](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h49m03s) remember we added that little exclamation mark. We could check the version. We can see the changes and when it was made. We can review some of the previous versions and we can even go back to those versions. That kind of integration with your History Component is done automatically by just adding history. And so is many of the other features [01:49:30](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h49m30s) that JCB is adding to your Component. Like export and import of data. Batch changes that you can make. As well as a whole lot of other concepts which is beyond the scope of what we had time for today. Well enjoy coding and yes if you have any issues, please go to GitHub. [01:49:58](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h49m58s) First check out the wiki page, check the tutorials and if you think you've discovered a bug, you're most welcome to open an issue and we'll see what we can do in trying to resolve that for you. We would like to invite other PHP Programmers to get involved on the JCB GitHub [01:50:22](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h50m22s) Community and help us improve JCB so that it can become a home for us to manage the troubled waters of open-source development. Thank you.
We have gone so far over the time trying to demonstrate to you some of the basic principles of setting up a Hello Component in JCB. I trust you've enjoyed this tutorial. By far it doesn't usually take this long to build a Hello World Component. There is an older tutorial where we managed to build a Hello World Component in a very shorter time. [01:48:02](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h48m02s) I illustrated and demonstrated and explain it a little more here to help you guys along to build components with JCB and that you'd realize that JCB is a very powerful application. I mean I haven't even gone to the code this time, and shown you all that it's written, but I mean just from the compiler we already got 13000 lines of code. Which would have taken you 5-8 hour days to write. [01:48:37](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h48m37s) Which is about 39 hours and I think for a basic component that's quite a lot of code and it's because that it's already integrating a lot of permissions structures and version control. I mean if I was to open the Greetings and open James, [01:49:03](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h49m03s) remember we added that little exclamation mark. We could check the version. We can see the changes and when it was made. We can review some of the previous versions and we can even go back to those versions. That kind of integration with your History Component is done automatically by just adding history. And so is many of the other features [01:49:30](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h49m30s) that JCB is adding to your Component. Like export and import of data. Batch changes that you can make. As well as a whole lot of other concepts that are beyond the scope of what we had time for today. Well enjoy coding and yes if you have any issues, please go to GitHub. [01:49:58](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h49m58s) First check out the wiki page, check the tutorials and if you think you've discovered a bug, you're most welcome to open an issue and we'll see what we can do in trying to resolve that for you. We would like to invite other PHP Programmers to get involved in the JCB GitHub [01:50:22](https://www.youtube.com/watch?v=IQfsLYIeblk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=01h50m22s) Community and help us improve JCB so that it can become a home for us to manage the troubled waters of open-source development. Thank you.