[4.1] Export / Import the database in the admin form

[twister65]

This pull request aims to export and import all the database in a package (zip file).

Summary of Changes

Add the Export / Import functionality to the System->Database view:

Testing Instructions

Apply this PR:
1- Click on Export button.
2- Select the zip file downloaded in the import box.
3- Click on Import button.

Expected result

Actual result

Documentation Changes Required

[brianteeman]

For security purposes I would expect to see the uploaded db dump deleted from the server after it has been used. I would also expect to see some "uniqueness" in the export file name instead of just joomla_db.zip. Probably including the site name and a time stamp.

[brianteeman]

Notice: Constant JPATH_ROOT already defined in C:\htdocs\joomla-cms\administrator\components\com_installer\Model\DatabaseModel.php on line 14

[brianteeman]

Windows cannot open the zip

[brianteeman]

Looking at the zip file I can see that it fails to open because at the top of the file before the zipped data is the markup for the html of the page

[wilsonge]

My gut is to close this as it's technically no different to the feature we rejected here #15819 (comment) - Anything you'd like to add that hasn't already been discussed there?

[twister65]

This is a gui for PR #24733. This is just a draft and all comments are welcome.

It works with PostgreSQL, but there are some recent bugs when importing into the MySQL database (regardless of this PR).
I hope to do a new PR soon to solve it:
https://github.com/twister65/database/tree/fix-import

[twister65]

Referring to @wilsonge comment #26248 (comment), I close this.

Note that postgresql is no longer supported by Akeeba Backup.
If someone needs to do a full backup of his site, he can use phppgadmin to dump the database and tar to archive the files.
So practical ! What good is it to be bored.

[alikon]

@twister65 at least thanks to your work, we can use the CLI command for this...
btw i disagree with @wilsonge ..... maybe i'm the other postgresql user other than you 😄

[twister65]

Bug fixes for the database importer / exporter are here:
joomla-framework/database#191

[twister65]

Reopened for test purposes only, at my convenience.

[twister65]

Windows cannot open the zip

@brianteeman , could you precise your system informations ?
I tested this without error on Windows 10 and wampserver.

[jaydevingawale]

I have tested this item ✅ successfully on 5cb9f08

I have tested this and it works successfully, even the downloaded file is also readable.

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[berndkohlen]

I am not shure, that the result is ok

[twister65]

@berndkohlen , please see my previous comment: #26248 (comment)
You also need to apply PR joomla-framework/database#191

[SharayuYadav]

I have tested this item ✅ successfully on ea0ba05

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[ttplpoojak]

I have tested this item ✅ successfully on ea0ba05

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[yasin-96]

I have tested this item ✅ successfully on bfbf948

Applied patch via patch tester, clicekd the export button, it downloaded the zip file and afterwards I clicekd the import button and selected the downloaded file worked without problems.

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[jmeintrup]

I have tested this item ✅ successfully on bfbf948

Tested successfully with MySQL

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[roland-d]

@twister65 The com_installer.ini was cleaned up in #30162 Can you please fix the conflict?

[bembelimen]

Hello,
thanks for your contribution.

As stated already, this PR is in my opinion not an improved solution to #15819 which was rejected for valid reasons. It also has the some additional challenges + e.g. missing the "time out protection". So I close this PR.