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Updated 009 Adding Admin Views to a Component (markdown)

Amigo 2019-06-06 12:32:58 +02:00
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009-Adding-Admin-Views-to-a-Component.md

@ -26,53 +26,40 @@ If you've opened your view it has a submenu here that can collapse away. You can
Auto check-in is a tweak that I've added to my Joomla components. (I'm possibly going to make a pull request to add it to Joomla.) [00:03:59](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h03m59s) Auto check-in adds a feature to your component. [00:04:28](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h04m28s) It checks whether this item had been checked out longer than a set period; if it happened to be so, it checks it automatically. The set period is something that the administrator sets in the global settings of the component. [00:04:57](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h04m57s) You can add auto check-in to a view by either saying 'yes' or 'no'.
**Settings Switch Keep History**
Keeping history of a back end view. The History Component is one of the most exciting things that I have integrated. It keeps track of every change you make in any article or item in your application.
* **Example**
If I go [00:05:33](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h05m33s) to preacher open 'A Capella Music' you'd see the 'version' button at the top. I type in Info@vdm.io, set 'Some text here' and clicked 'save'. If I click on 'version', you'll see that it now locked a new version. [00:06:13](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m13s) I could take the one I'm on currently and keep it. It would lock it in because you can also set the amount of history the system should keep. The default changes. I can click on the previous version and say restore and it will be restored it. As you can see, Email address and description is gone. To go back to the one that has been done just click on 'version' and 'restore' and the details are back again. [00:06:52](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m52s) History Component is a Joomla extension which you're able to integrate into your own components as a component developer. [00:07:14](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h07m14s) <<<<<<<<<<<
If I was to show you the amount of code let me do that, that you need to write. First of all you need to add an asset ID to all your back end view database tables. If we were to go to sermon distributor, and check out it's sql table, we'll click on that(installmysql), you'd see that all of them have asset_ids. That is not as easy as it is. Once you've got the asset_ids, then in table when you start your table you should set up observers. Which check the specific item to add history options to that asset_id. This(see video) is a part of the whole part of the script that is being add. This(see video) is being added on the right place. [00:08:45](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h08m45s)
As well as in the store method. There is another tweak which I might take too long to look at all of that. We will go into more detail in the advanced courses I suppose. Just to let you know, I create an import, export method. And even in the import and export of data, primarily in importing of data, you need to again [00:09:12](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h09m12s) do quite advanced trick to ensure that the history of that rewriteables will be tracked. These kind of features I just added dynamically to your component because of that switch. That's not the only code. The code that throws people out I suppose, is this script code. This is a script that is used when the component installs. If you look at this, this is the uninstall area in the script code which runs when you uninstall the component. It's looking in many places, it's looking in content-type, it's looking in the content [00:09:48](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h09m48s) tag map, it is looking in the ucm base, it is looking in the content types again, and per view. I mean this is not just once off per view these checks are done and we are removing any items that might remain there. Because when you uninstall a component What you don't realize Is it so integrated into the Joomla system that just removing it's on tables actually doesn't do the job. We added the feature that if you uninstall it, it actually cleans the Joomla system of that extension [00:10:22](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h10m22s) completely. Which is ideal because you won't want any traces left. You would like to uninstall something you want it gone. And so this uninstall method does exactly that. And then with the installing of this component, we get here which is the postflight install. We actually add many records to areas inside of Joomla. For example inside of the contents type, [00:10:57](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h10m57s) we need to add this(selected area) information. We have to do it for every view which you've selected, either tags or history.
**Update Method**
We'll look at the tags in the category concept just a little bit later. Content types, as you see we are adding it for the [00:11:27(https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h11m27s) sermons, we adding it for the series's, we're adding it for the statistics and for the help documents. That is when we install their component, we are needs to be added. You are not seeing the whole picture. Let me scroll a bit look at that string that needs to be written and added to the database of these specific areas to create that integration where it will track the object change and just do it automatically. All this is generated by component builder. When you do an update, here is the issue, [00:12:00](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h12m00s) when you do an update and you're adding a new field to a view. This update will make sure that specific field also will get tracked. What it first does it gets the data. It tries to see whether it already exists. If it exists it means it's here it just updates it. If it's been for some reason removed, it then inserts it. [00:12:29](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h12m29s) That is the update method.
The update method also takes care of the little lot of discrepancies because as you develop your extension. There are two phases of development. The one phase is, when you're busy building it and no one else in the world has it. That's a very easy phase in fact then you don't really use this nice feature. You just uninstall it and reinstall it every time until you happy with what you see. But then once you put it out in the public you can't just step up your database structure without the needed scripting for others to do a easy upgrade. Because they already got data in the database they can't just uninstall and install. [00:13:13](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h13m13s) Component builder has a way for you to actually address that. Well obviously because I have to deal with it and I don't want to have my clients complain. I added a feature which will look at inside of component builders component area. I will explain it in detail but just that you know, this part of the update feature, you making use of, you're a specific integration, to keep track of your back end view changes to items is in place already written by component builders telling you here on which line it was done, [00:13:55](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h13m55s) if you have that switch trip. That is just giving you a quick glimpse into the code of a little switch called keep history. This little switch does all that for you for this specific view.
If I go [00:05:33](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h05m33s) to preacher open 'A Capella Music' you'd see the 'version' button at the top. I type in Info@vdm.io, set 'Some text here' and clicked 'save'. If I click on 'version', you'll see that it now locked a new version. [00:06:13](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m13s) I could take the one I'm on currently and keep it. It would lock it in because you can also set the amount of history the system should keep. The default changes. I can click on the previous version and say restore and it will be restored it. As you can see, Email address and description is gone. To go back to the one that has been done just click on 'version' and 'restore' and the details are back again. [00:06:52](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m52s) History Component is a Joomla extension which you're able to integrate into your own components as a component developer. [00:07:14](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h07m14s)
**Settings Switch MetaData**
Then depending on whether you going to use this views information on the front end as your main base for your [00:14:23](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h14m23s) page. You might want to add Metadata. The metadata isn't that useful anymore, although google and others are maybe ignoring it. It still plays a role to making a page very search engine optimized. Component builder if you do your homework and you do things right [00:14:51](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h14m51s) in relationship to implementation of your metadata, you'd see that it actually adds tremendous good features to do your front end of your site. I would suggest that you add Metadata when you are going to use a specific area to the front and when we start looking at us setting up the site views you'll see this coming up again and the necessity of using it. Obviously you'll be remodeling the data because you can get relationship from many databases. [00:15:26](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h15m26s) You need the area in the back end to get the data.
Then depending on whether you going to use this views information on the front end as your main base for your [00:14:23](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h14m23s) page. You might want to add Metadata. The metadata isn't that useful anymore, although google and others are maybe ignoring it. It still plays a role to making a page very search engine optimized. Component builder if you do your homework and you do things right [00:14:51](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h14m51s) in relationship to implementation of your metadata, you'd see that it actually adds tremendous good features to do the front end of your site. I would suggest that you add Metadata when you are going to use a specific area to the front and when we start looking at setting up the site views you'll see this coming up again and the necessity of using it. Obviously you'll be remodeling the data because you can get relationship from many databases. [00:15:26](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h15m26s) You need the area in the back end to get the data.
**Settings Switch Access**
Then this access switch might throw you out. This simply adds the following feature. If you open an article, and open publishing, it says here(dropdown) access public, super, registered. Which is relating to your user [00:15:52](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h15m52s) access levels. As you know user access levels can target multiple groups into one user access level. This again is only a feature that will be extremely useful when you look at your front end of your component. In the back end you can also make use of it. You can change the access of a specific item but since we also have such a intense permissional switches. I hardly ever make use of it but it's there and I mostly use it for front end. When I want to set an item not to be accessible to the front.
Then this access switch might throw you out. This simply adds the following feature. If you open an article, and open publishing, it says 'dropdown', 'access public' ect. Which is relating to your user [00:15:52](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h15m52s) access levels. As you know user access levels can target multiple groups into one user access level. This again is only a feature that will be extremely useful when you look at the front end of your component. In the back end you can also make use of it. You can change the access of a specific item but since we also have such intense permissional switches, I hardly ever make use of it but it's there and I mostly use it for the front end when I want to set an item not to be accessible to the front.
**Settings Switch Export/Import**
Then when you do want to add to import/export function. This is a [00:16:38](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h16m38s) extended area which component builder dynamically just adds. You don't need to do anything is to relation to scripting at this stage. You could just click yes or no to import/export feature at the top of the page of every view. Every view will have an import/export. At the moment it's a direct relationship import/export. What I mean by that is You need to follow. If you export this then you'd see the the way it should look to do import. [00:17:13](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h17m13s) And the import is really nice you can map the headers to their specific database tables. Obviously there's work needed especially when you're dealing with information that was encrypted. If you export it, it will encrypt it, if you have the permissions to access that item of course. The problem is because it's encrypting yet when you imported, it doesn't know that it should encrypted. There is a little discrepancy with the advance storing methods. As long as you are having a data back end database table that doesn't require these advance storing methods, it's just your normal defaults like I explain before. Then import/export method will then works seemingly without any problems. I'm still working on this area but it's already working well enough that I felt I could leave it in there. [00:18:07](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h18m07s) That is the switch here(Export/Import data) and if you don't like the feature just click no.
Then when you do want to add to import/export function. This is a [00:16:38](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h16m38s) extended area which component builder dynamically just adds. You don't need to do anything in relation to scripting at this stage. You could just click 'yes' or 'no' to import/export feature at the top of the page of every view. Every view will have an import/export function. At the moment it's a direct relationship import/export. If you export this then you'd see the the way it should look to do a import [00:17:13](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h17m13s) and if the import is really nice you can map the headers to their specific database tables. Obviously there's work needed especially when you're dealing with information that was encrypted. If you export it, it will decrypt it, if you have the permissions to access that item of course, but the problem is because it has been decrypted when you have imported it, it doesn't know that it should encrypt it. There is a little discrepancy with the advance storing methods. As long as you are having a data back end database table that doesn't require these advance storing methods, it's just your normal defaults like I explained before. Seemingly the import/export method will then works without any problems. I'm still working on this area but it is already working well enough to leave it in there for now. [00:18:07](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h18m07s) That is the switch here'Export/Import data' and if you don't like the feature just click 'no'.
**Settings Switch Edit - Create - Site Views**
Then here is a feature which I think I'm most excited about. That is every back end view has of course and edit area. If you've selected that read write option then the edit area you can change the values of that back end listview. The admin create site view means that the system is going to dynamically build [00:18:42](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h18m42s) the front area which you can access to edit the data at the front of the website. That is an excellent tool. It takes exactly this(see video) if I was to use this and as an example. It takes this editing area and place it on the front of your website. [00:19:13](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h19m13s) You are controlling in the permissional structures who has access to edit this, who access to edit the status, who has access to edit specific fields. We looked at adding the fields to your admin views and you could click whether this field should have permissional structure. That means that if you have those things set up in the back in the global professional tab, then it will be implemented in the front if a certain user is in the correct group. [00:19:44](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h19m44s) They wont be able to access this then if they have access. They don't have the right to for example update maybe the modified date or the status then in the front. They also will not be able to do that. You have immense control over who can do what. But at the same time you have the ability to actually edit items on the front. I think that is excellent to be able to do that. That all of that just possible by saying yes. But realize this, the fact that it creates the [00:20:19](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h20m19s) view if I could says so and places it on the front, doesn't mean that there is a link somewhere to it. That is something you need to add to your site front custom site as you develop it. And this is partly a feature therefore which if you don't know PHP and if you're not that familiar with how to setup your links on the front of the component. You would possibly would find this difficult to implement. But I will show you what it builds. I can show you that now. [00:20:54](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h20m54s) I have a component which I'm using that feature quite a lot. It's called costbenefitprojection. This is the back end. If we look at the views, we have here called company and we have one called scaling factor and intervention. Now these are editing views as you can see. Those other list views, those are the editing views. If I go to the front of the website [00:21:28](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h21m28s) and I open that component. And I click on view, you will see that there is company, intervention and scaling factors. They are basically being extended here. What the component builder does, it adds this view, and the model for it. I also add the controller for it. It puts all the script in place so that all you need to do, is inside of, for example [00:22:00](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h22m00s) I have here an area called cpanel. Let me show you this component briefly. This is just some dummy data that I placed in here. None of them is real. Here you can open multiple items. This is all stuff that I built in component. None of this was built outside of component builder. It all was done in component builder. And you can click on edit advance profile. And it will open the editing area. [00:22:37](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h22m37s) This is the front end editing area, as you can see there are all the tabs. Let me show you the back end. Here's the back end area. Its showing up the same information in the front. It only dumps the permission and publishing features. That is because of access permissions is done automatically [00:23:10](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h23m10s) Because that front-end user didn't have permissions to edit most of the things in here. You didn't have the right to edit any of these. Therefore it didn't need to see it and so the system just remove that tab, same goes with the permissions. If you didn't have the right to do scaling factors on interventions, you also have dumped that, it won't show it up in the front.
Then here is a feature which I think I'm most excited about. That is that every back end view has of course a edit area. If you've selected that read write option in the edit area you can change the values of that back end listview. The admin create site view means that the system is going to dynamically build [00:18:42](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h18m42s) the front area which you can access to edit the data at the front of the website. That is an excellent tool. It takes exactly this(see video) if I was to use this and as an example. It takes this editing area and place it on the front of your website. [00:19:13](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h19m13s) You are controlling in the permissional structures who has access to edit this, who has access to edit the status, who has access to edit specific fields. We looked at adding the fields to your admin views and you could click whether this field should have permissional structure. That means that if you have those things set up in the back in the global permissional tab, then it will be implemented in the front if a certain user is in the correct group. [00:19:44](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h19m44s) They won't be able to access this then if they have access. They don't have the right to, for example to update maybe the modified date or the status then in the front. They also will not be able to do that. You have immense control over who can do what. But at the same time you have the ability to actually edit items on the front. I think that is excellent to be able to do that. That all of that is possible by just saying, 'yes'. But realize this, the fact that it creates the [00:20:19](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h20m19s) view, if I could says so and places it on the front, doesn't mean that there is a link somewhere to it. That is something you need to add to your site front custom site as you develop it. This is partly a feature therefore which if you don't know PHP and if you're not that familiar with how to setup your links on the front of the component, would possibly find this difficult to implement. We will be looking at what it can build. [00:20:54](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h20m54s) I have a component in which I'm using that feature quite a lot. It's called 'costbenefitprojection'. Looking in the back end we look at the views, we have here one called 'company' and we have one called 'scaling' factor and 'intervention'.
Now these are 'editing views' as you can see and the other 'list views'. If I go to the front of the website [00:21:28](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h21m28s) and I open that component and click on view, you will see there is: company, intervention and scaling factors. They are basically being extended here. What the component builder does, it adds this view, and the module for it. I also add the controller for it. It puts all the script in place so that all you need to do is, for example: Inside the [00:22:00](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h22m00s) area called 'cpanel'. Looking at this component briefly. This is just some dummy data that I placed in here. Here you can open multiple items and you can click on 'edit advanced profile' and it will open the editing area. [00:22:37](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h22m37s) This is the front end editing area, as you can see there are all the tabs. Let me show you the back end. Here's the back end area. Its showing up the same information in the front. It only dumps the permission and publishing features. That is because of access permissions is done automatically [00:23:10](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h23m10s)<<<<<<Editted
Because that front-end user didn't have permissions to edit most of the things in here. You didn't have the right to edit any of these. Therefore it didn't need to see it and so the system just remove that tab, same goes with the permissions. If you didn't have the right to do scaling factors on interventions, you also have dumped that, it won't show it up in the front.
And so this is the back end of that same dummy company that I've set up. You can see that it [00:23:42](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h23m42s) moved it to the front. Not only did it make it possible to edit data, but also to create new companies. If you click on that(create company) you will see it opens up in the area for you to start fresh. You can create a company from scratch. In this specific example you will see that it cannot add a user. So what the system has done through some custom scripting that I've added, if you click save it adds his ID in here(user(member)-select a user). And he doesn't need to select that(user(member)-select a user). That's just a quick look at [00:24:19](https://www.youtube.com/watch?v=39vY66X7GGU&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h24m19s) that specific button called edit create site view. It adds the whole code base to the front. And integrates it to the way that the front needs to be able to control the permissions.