Metadata update.

[stanislas]

Hi.
I've figured out that if i wanted to change a particular metadata field i would do that like this.

self.db.new_api.set_field('title',{book_id:'new_title'})

I don't understand why changing it doesn't apply instantly to the calibre gui.
I am guessing that calibre is storing my changes in some cache and i need to tell calibre to refresh itself. I just don't know how.
I would be grateful for any help.

[kovidgoyal]

You have to explicitly refresh the GUI when you make changes to the db. You can do it simply via

self.gui.iactions['Edit Metadata'].refresh_books_after_metadata_edit({book_id})

[stanislas]

Sorry, but it doesn't work for me. Maybe i am not using it right.

calibre 2.5  isfrozen: False is64bit: True
Linux-3.16.0-4-amd64-x86_64-with-debian-8.1 Linux ('64bit', 'ELF')
('Linux', '3.16.0-4-amd64', '#1 SMP Debian 3.16.7-ckt11-1 (2015-05-24)')
Python 2.7.9
Linux: ('debian', '8.1', '')
Successfully initialized third party plugins: CalibreBookBrainzPlugin && CalibreBookBrainzPluginBBID
Traceback (most recent call last):
  File "calibre_plugins.CalibreBookBrainzPluginBBID.main", line 88, in metadataUpdate
AttributeError: 'EditMetadataAction' object has no attribute 'refresh_books_after_metadata_edit'

[kovidgoyal]

Your version of calibre is ancient. I dont recall if that API existed in 2.5. But you can easily find that function in the current calibre source code and do what it does manually.

[stanislas]

Ok, I thought that the latest version was 2.4.6 not 2.46.
Now i have calibre v.2.46 and suddenly requests stopped working.

Plugin removed
Plugin updated: CalibreBookBrainzPluginBBID (0, 0, 1)
calibre 2.46  isfrozen: True is64bit: True
Linux-3.16.0-4-amd64-x86_64-with-debian-8.1 Linux ('64bit', 'ELF')
('Linux', '3.16.0-4-amd64', '#1 SMP Debian 3.16.7-ckt11-1 (2015-05-24)')
Python 2.7.9
Linux: ('debian', '8.1', '')
Successfully initialized third party plugins: CalibreBookBrainzPluginBBID
Starting up...
Traceback (most recent call last):
  File "site-packages/calibre/gui2/ui.py", line 152, in __init__
  File "site-packages/calibre/gui2/ui.py", line 166, in init_iaction
  File "site-packages/calibre/customize/__init__.py", line 582, in load_actual_plugin
  File "importlib/__init__.py", line 37, in import_module
  File "site-packages/calibre/customize/zipplugin.py", line 179, in load_module
  File "calibre_plugins.CalibreBookBrainzPluginBBID.ui", line 11, in <module>
  File "site-packages/calibre/customize/zipplugin.py", line 179, in load_module
  File "calibre_plugins.CalibreBookBrainzPluginBBID.main", line 11, in <module>
ImportError: No module named requests
Key u'S' for shortcut Zapisz na dysku is already used by Połącz wpisy książki, ignoring
Started up in 2.17 seconds with 14 books

I don't realise how that could have happened.
I've installed requests for python and python3.

[kovidgoyal]

If you run the binary then it does not use the system python. For that, you have to add the system site-packages path to sys.path manually.

[stanislas]

Ok, thanks - now everything launches fine.
But still gui doesn't change.

mi = self.gui.library_view.model().db.get_metadata(rows[0].row())
print(self.db.new_api.field_for('title', book_id))
self.db.new_api.set_field('title',{book_id:'STH'})
self.gui.iactions['Edit Metadata'].refresh_books_after_metadata_edit({book_id})

[stanislas]

Am i using

 self.gui.iactions['Edit Metadata'].refresh_books_after_metadata_edit

right ?

[stanislas]

Maybe i am using bad book_id ? I am using book_id from :

rows = self.gui.current_view().selectionModel().selectedRows()
book_id=rows[0].row()

[chaley]

The row is position in the list of books, not the book_id.

One way to get the book id from the row is

book_id = self.gui.library_view.model().id(rows[0])

[stanislas]

Finally, it works
Great thanks to both of you chaley and kavidgoyal