PLANET-6387 Allow import/export for all post types

[Inwerpsel]

Ref: https://jira.greenpeace.org/browse/PLANET-6387

Remove all checks for the "campaign" post type, as this logic works on other types as well.

Makes following things appear in the UI which were only on campaign pages previously:

• Import button on the listing page. All types use the same import page URL, the type is in the imported XML.
• Export button on the listing page for each post.

Otherwise the import is functionality that didn't need any further changes to work on all post types.

I took the liberty to also add an edit link to the post import output if it's successful. I imagine people will often want to edit it after import.

[planet-4]

Test instance is ready 🚀

🌑 tavros | admin | blocks report | CircleCI | composer-local.json

⌚ 2022.01.18 12:55:48

[sagarsdeshmukh]

Can we also change the files names? 🤔
CampaignExporter.php
CampaignImporter.php
as its applicable to all post types.

[Inwerpsel]

We can probably remove these aliases, might do that in a follow up.

[sagarsdeshmukh]

The post taxonomy import is looks like not working, we don’t have it in campaign post types, so didn’t cause any issue in past -

[sagarsdeshmukh]

Other than taxonomy import issue PR looks good to me 👍

[Inwerpsel]

The post taxonomy import is looks like not working, we don’t have it in campaign post types, so didn’t cause any issue in past -

Could be this was never implemented, I don't find any code that looks like it should do this. Maybe it's even intentional, as I imagine usually editors don't want to have the import create new taxonomy items from another site. And it's quite challenging to map the imported taxonomy to the local one.

[sagarsdeshmukh]

The post taxonomy import is looks like not working, we don’t have it in campaign post types, so didn’t cause any issue in past -

Could be this was never implemented, I don't find any code that looks like it should do this. Maybe it's even intentional, as I imagine usually editors don't want to have the import create new taxonomy items from another site. And it's quite challenging to map the imported taxonomy to the local one.

I agree that importing taxonomy, will be quite challenging.
We are using the wordpress importer plugin to import the data, which support's the Categories, tags and terms (from custom taxonomies and term meta) import.