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Updated 031 Automatic import of custom code during compilation in JCB (markdown)

Amigo 2019-07-12 11:11:15 +02:00
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031-Automatic-import-of-custom-code-during-compilation-in-JCB.md

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### Custom Code
A very smart new feature has lately been added to Component Builder that's called custom code.[00:00:12](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h00m12s) It is stored next to Dynamic Get. You'd hardly ever need to go in here, unless you want to look at what is already been stored and make changes in the UI. Most of the time the changes will be done in the editor. [00:00:39](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h00m39s)
A very smart new feature has lately been added to Component Builder that's called custom code.[00:00:12](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h00m12s) It is stored next to Dynamic Get. You'd hardly ever need to go in here, unless you want to look at what is already been stored and make changes in the UI. Most of the time the changes will be done in the editor.
**What is the purpose of this new feature?**
**What is the purpose of this new feature?**[00:00:39](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h00m39s)
The feature is there for those who are used to coding in another editor. For example, they create a component in Component Builder, then once it is created, they do a compile and install it onto the same website as Component Builder to test it. [00:01:13](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h01m13s) Then during testing, code is added into that compiled version that are installed onto the website. The new feature is able to, on compilation to extract that custom code , store it in this custom code area, and add it back into the component on the fly. Since there are some limitations, a demonstration of some rules and guidelines is necessary. [00:01:45](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h01m45s) This is still in beta and quite a few improvements still need to be done. I would like it to be tested and would appreciate some feedback from you.
I'm going to compile the demo component since most of you might already have this component installed and can then use this as sort of a test area. I'm going to install it on to this current site and explain how to add custom scripting to that component by going to an editor.
[00:02:28](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h02m28s)
### Editing Code In The Editor
### Editing Code In The Editor[00:02:28](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h02m28s)
Here in the editor can this root directory of the website be seen. Go to the back end of the components. Open administrator, components and then the demo component. To demonstrate: On the main index page some custom scripting is added. [00:03:04](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h03m04s) There are some conventions and regulations that should be considered when the way to add custom scripting is explained.
### Conventions Used(Insert Code - Replace code)
Here in the editor can this root directory of the website be seen. Go to the back end of the components. Open administrator, components and then the demo component. To demonstrate: On the main index page some custom scripting is added. .
Let me first show you the conventions. To insert Custom scripting you will use a tag like this(see video). You will use asterisks(&ast;) instead of the X's that are in the code. The code has the X's in it but the actual way would be with the asterisks(&ast;). So that will be to insert a new code. Use that place holder(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///) in the beginning of the area, then after a new line, insert the code, and then at the end of the code, insert this one(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///), to close the code. [00:03:50](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h03m50s) There are two ways of adding code. One is to insert code and one is to replace existing code. So 'insert' code would simply at the same line insert that code into the existing code, where is 'replace' code will remove the old code and add the new code in its place, So these are the two conventions. Once Component Builder adds the code back, the tag will change to 'inserted', and will have this(23) new number at the end. [00:04:28](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h04m28s)This number is referencing the id of the code in the system.
### Conventions Used(Insert Code - Replace code) [00:03:04](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h03m04s)
**NB. Do not change this number.** Component Builder would interpret that it does not have one, and it needs to be created. It will be an error. It will add this at the end. After compiling it and adding this string in, it won't compile it again, because of these opening and closing [00:04:56](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h04m56s) brackets not being there.(Greater and Lesser than signs). They are the ones that activate it and makes it be parsed again. When Component Builder places the code back, it looks like this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///). If it needs to be changed at a later stage, just add this diamond(<>), and it will then update the existing code in the database with the changes that had been made. [00:05:30](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h05m30s)<<<<<<<<<<<<<<<<<<<<<<
There are some conventions and regulations that should be considered when the way to add custom scripting is explained. Let me first show you the conventions. To insert Custom scripting you will use a tag like this(see video). You will use asterisks(&ast;) instead of the X's that are in the code. The code has the X's in it but the actual way would be with the asterisks(&ast;). So that will be to insert a new code. Use that place holder(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///) in the beginning of the area, then after a new line, insert the code, and then at the end of the code, insert this one(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///), to close the code. [00:03:50](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h03m50s) There are two ways of adding code. One is to insert code and one is to replace existing code. So 'insert' code would simply at the same line insert that code into the existing code, where is 'replace' code will remove the old code and add the new code in its place, So these are the two conventions. Once Component Builder adds the code back, the tag will change to 'inserted', and will have this(23) new number at the end. [00:04:28](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h04m28s)This number is referencing the id of the code in the system.
### Limitations For Inserting And Updating
**NB. Do not change this number.** Component Builder would interpret that it does not have one, and it needs to be created. It will be an error. It will add this at the end. After compiling it and adding this string in, it won't compile it again, because of these opening and closing [00:04:56](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h04m56s) brackets not being there.(Greater and Lesser than signs). They are the ones that activate it and makes it be parsed again. When Component Builder places the code back, it looks like this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///). If it needs to be changed at a later stage, just add this diamond(<>), and it will then update the existing code in the database with the changes that had been made.
There are a few limitations. You cannot add code close to each other than I would say 6 lines. So if there are going to be code close to each other and it ends and starts within the parameter of 6 lines, you end up with a problem, especially at the end. I will demonstrate that somehow in our actual doing of this. The reason is Component Builder doesn't only use the line in which this is found to remember where to place it, but actually creates a fingerprint of the code above this insertion and the code [00:06:14](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m14s) below this insertion, to accurately insert it in the future. So that code changes and then Component Builder will give you a notice and will not insert the code. This is because of the nature of JCB. It is constantly being improved and that therefore it's code is moving around quite a lot. There was no other way for us to try and automate this, [00:06:48](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m48s) because if we use the line it could possibly cause an accident by overwriting code you never intended it to overwrite. So the only way we could solve this was creating what we call a fingerprint. A few lines above the insertion or the replacement and a few lines below the replacement. I'll demonstrate this in our demonstration in a moment. Just a heads up about that. To insert new code you will use this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///). To replace new code or for the first time you would use that(///&ast;&ast;&ast;[REPLACE<>$$$$]&ast;&ast;&ast;///) [00:07:25](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h07m25s) At the end of the code you would add these corresponding placeholders(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///) and(///&ast;&ast;&ast;[REPLACE<>$$$$]&ast;&ast;&ast;///) . I'll put these this little block(see video) into the comments of this tutorial. If any of you need to copy it down you could just copy it from there. When component builder adds it back, it will look like this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///23) for the inserted and this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///25) for the replaced. If you then come back all you need to do is just add that diamond(<>) in there for it to be updated in the database. [00:08:00](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h08m00s)
### Limitations For Inserting And Updating [00:05:30](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h05m30s)
* ### Showing Example With Replace(see video)
There are a few limitations. Code can not be added closer to each other than about 6 lines. If there are going to be code closer to each other and it ends and starts within the parameter of 6 lines, you end up with a problem, especially at the end. [00:06:14](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m14s) The reason is Component Builder doesn't only use the line in which this is found to remember where to place it, but actually creates a fingerprint of the code above this insertion and the code below this insertion, to accurately insert it in the future. So that code changes and then Component Builder will give you a notice and will not insert the code.<<<<<<<
Let's see this in action. So here we have that demo components main document open. I'm going to add some replacement tags here. I'm not making any changes but I could add a few lines here - ///. Maybe another comment - 'hi it worked', [00:08:34](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h08m34s) let's do - echo 'hi it worked' and that should do it. This is going to replace this area.
This is because of the nature of JCB. It is constantly being improved and that therefore it's code is moving around quite a lot. There was no other way for us to try and automate this, [00:06:48](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h06m48s) because if we use the line it could possibly cause an accident by overwriting code you never intended it to overwrite. So the only way we could solve this was creating what we call a fingerprint. A few lines above the insertion or the replacement and a few lines below the replacement. I'll demonstrate this in our demonstration in a moment. Just a heads up about that. To insert new code you will use this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///). To replace new code or for the first time you would use that(///&ast;&ast;&ast;[REPLACE<>$$$$]&ast;&ast;&ast;///) [00:07:25](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h07m25s) At the end of the code you would add these corresponding placeholders(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///) and(///&ast;&ast;&ast;[REPLACE<>$$$$]&ast;&ast;&ast;///) . I'll put these this little block(see video) into the comments of this tutorial. If any of you need to copy it down you could just copy it from there. When component builder adds it back, it will look like this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///23) for the inserted and this(///&ast;&ast;&ast;[INSERT<>$$$$]&ast;&ast;&ast;///25) for the replaced. If you then come back all you need to do is just add that diamond(<>) in there for it to be updated in the database.
### Recompiling The Demo Component With Replace
* ### Showing Example With Replace(see video)[00:08:00](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h08m00s)
Let's go to the compiler and compile the component. See what happens. So in the compiler I'm going to compile a component again. It successfully compiled. Now before I install it I could do a check to see whether it actually did get the code from the component. [00:09:24](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h09m24s)
Let's see this in action. So here we have that demo components main document open. I'm going to add some replacement tags here. I'm not making any changes but I could add a few lines here - ///. Maybe another comment - 'hi it worked', [00:08:34](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h08m34s) let's do - echo 'hi it worked' and that should do it. This is going to replace this area. +++++++++++++
### Recompiling The Demo Component With Replace [00:08:58](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h08m58s)
++++++++Let's go to the compiler and compile the component. See what happens. So in the compiler I'm going to compile a component again. It successfully compiled. Now before I install it I could do a check to see whether it actually did get the code from the component. [00:09:24](https://www.youtube.com/watch?v=DFMfIl-VkSk&list=PLQRGFI8XZ_wtGvPQZWBfDzzlERLQgpMRE&t=00h09m24s)
### Checking The Custom Code Tab Before Installing