Templates: various questions not worth their own thread - Page 18

chaley · 12-27-2021, 05:01 PM

Quote:

Originally Posted by ownedbycats

The #genres columns - main thing is if I switch between, say Fanfiction and Read/Unread too quickly, they start displaying the wrong entries for that VL (combined or only cleaned_tags) -- I'm guessing something to do with the caching, because re-saving the template recalculates them all. F5 doesn't fix this, nor does re-searching.

Does selecting all books, doing a bulk edit metadata, changing nothing, then pressing OK fix it? If so then the problem could be related to the GUI caches. I have no idea what view manager does, but it probably should do IIRC a

Code:

gui.current_db().refresh()

EDIT: Don't know whether action chains does anything special.

EDIT2: you might need to check the "Refresh book list after edit" in the bulk dialog for 'correction' to work.

ownedbycats · 12-27-2021, 05:22 PM

Yes, the bulk metadata edit fixes it.

I tried making this custom AC module, but it gave me an error:

Code:

from calibre_plugins.action_chains.actions.base import ChainAction

class RefreshAction(ChainAction):

    name = 'Refresh GUI'

    def run(self, gui, settings, chain):
        gui.current_db().refresh()

chaley · 12-27-2021, 05:29 PM

Quote:

Originally Posted by ownedbycats

Yes, the bulk metadata edit fixes it.

I tried making this custom AC module, but it gave me an error:

Code:

from calibre_plugins.action_chains.actions.base import ChainAction

class RefreshAction(ChainAction):

    name = 'Refresh GUI'

    def run(self, gui, settings, chain):
        gui.current_db().refresh()

Looking at calibre's code I think it should be

Code:

gui.current_db().data.refresh()

Alternatively, try

Code:

gui.refresh_all()

From what I see this method refreshes all the various bits of calibre including the tag browser, the database, and the gui. It also does a resort.

ownedbycats · 12-27-2021, 08:10 PM

Hmm, data.refresh gave me the same error:

Code:

calibre, version 5.34.0
ERROR: Unhandled exception: <b>TypeError</b>:'LibraryDatabase' object is not callable

calibre 5.34 [64bit]  embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: DeACSM (0, 0, 15) && DeDRM (7, 2, 1) && Action Chains (1, 14, 0) && Barnes & Noble (1, 2, 16) && Calibre Power Search Plugin (2, 1, 1) && Comments Cleaner (1, 5, 0) && Count Pages (1, 11, 1) && Embed Comic Metadata (1, 6, 1) && EpubCheck (0, 2, 3) && EpubMerge (2, 11, 0) && Extract ISBN (1, 5, 0) && FanFicFare (4, 8, 4) && Fantastic Fiction (1, 5, 0) && Favourites Menu (1, 0, 5) && Find Duplicates (1, 8, 10) && Generate Cover (2, 0, 2) && GetFileName (0, 1, 1) && Goodreads (1, 5, 1) && Import List (1, 5, 6) && Job Spy (1, 0, 190) && Kindle hi-res covers (0, 5, 0) && Kobo Books (1, 8, 3) && Kobo Utilities (2, 14, 1) && KoboTouchExtended (3, 5, 4) && Last Modified (0, 7, 1) && Library Codes (1, 0, 50) && Manage Series (1, 2, 11) && Modify ePub (1, 6, 3) && MultiColumnSearch (1, 0, 87) && Obok DeDRM (7, 2, 1) && Open With (1, 5, 13) && Overdrive Link (2, 49, 0) && Quality Check (1, 11, 4) && Reading List (1, 7, 7) && Search The Internet (1, 8, 1) && SmartEject (2, 3, 0) && Standard Ebooks (1, 0, 0) && Sum Column (0, 3, 1) && View Manager (1, 6, 1) && Walk Search History (1, 3, 2) && Overdrive Link* (2, 49, 0)
Traceback (most recent call last):
  File "calibre_plugins.action_chains.action", line 454, in run_chain
  File "calibre_plugins.action_chains.chains", line 396, in run
  File "calibre_plugins.action_chains.chains", line 211, in _run_loop
  File "calibre_plugins.action_chains.chains", line 188, in _run_loop
  File "Refresh GUI", line 8, in run
TypeError: 'LibraryDatabase' object is not callable

refresh_all doesn't error, but it didn't refresh the column (it does resort books though)

ownedbycats · 12-27-2021, 08:19 PM

Also, unrelated to the above error:

Is it possible to put a strcat inside a first_non_empty? For icon_fanfics shared template, I want to display multiple icons, but if none exist then use a placeholder. This gave me an error:

Code:

program:

first_non_empty(
   strcat
   (
		if "^foo$" inlist $#taglike then 'foo.png:' fi,		
		if "^bar$" inlist $#taglike then 'bar.png:' fi,
		if "^foobar$" inlist $#taglike then 'foobar.png:' fi,
   )
   if $#taglike then 'placeholder.png' fi 
)

I considered a list_difference (I use one for icons_formats) but I have close to 50 entries!

EDIT: I found a very weird workaround that maybe only works because it's a shared template. I put this in column rules/emblems:

Code:

program:

		if icons_fanfic() then icons_fanfic() 
		else 'placeholder.png' fi

chaley · 12-28-2021, 05:22 AM

Quote:

Originally Posted by ownedbycats

Hmm, data.refresh gave me the same error:

Code:

calibre, version 5.34.0
ERROR: Unhandled exception: <b>TypeError</b>:'LibraryDatabase' object is not callable

calibre 5.34 [64bit]  embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: DeACSM (0, 0, 15) && DeDRM (7, 2, 1) && Action Chains (1, 14, 0) && Barnes & Noble (1, 2, 16) && Calibre Power Search Plugin (2, 1, 1) && Comments Cleaner (1, 5, 0) && Count Pages (1, 11, 1) && Embed Comic Metadata (1, 6, 1) && EpubCheck (0, 2, 3) && EpubMerge (2, 11, 0) && Extract ISBN (1, 5, 0) && FanFicFare (4, 8, 4) && Fantastic Fiction (1, 5, 0) && Favourites Menu (1, 0, 5) && Find Duplicates (1, 8, 10) && Generate Cover (2, 0, 2) && GetFileName (0, 1, 1) && Goodreads (1, 5, 1) && Import List (1, 5, 6) && Job Spy (1, 0, 190) && Kindle hi-res covers (0, 5, 0) && Kobo Books (1, 8, 3) && Kobo Utilities (2, 14, 1) && KoboTouchExtended (3, 5, 4) && Last Modified (0, 7, 1) && Library Codes (1, 0, 50) && Manage Series (1, 2, 11) && Modify ePub (1, 6, 3) && MultiColumnSearch (1, 0, 87) && Obok DeDRM (7, 2, 1) && Open With (1, 5, 13) && Overdrive Link (2, 49, 0) && Quality Check (1, 11, 4) && Reading List (1, 7, 7) && Search The Internet (1, 8, 1) && SmartEject (2, 3, 0) && Standard Ebooks (1, 0, 0) && Sum Column (0, 3, 1) && View Manager (1, 6, 1) && Walk Search History (1, 3, 2) && Overdrive Link* (2, 49, 0)
Traceback (most recent call last):
  File "calibre_plugins.action_chains.action", line 454, in run_chain
  File "calibre_plugins.action_chains.chains", line 396, in run
  File "calibre_plugins.action_chains.chains", line 211, in _run_loop
  File "calibre_plugins.action_chains.chains", line 188, in _run_loop
  File "Refresh GUI", line 8, in run
TypeError: 'LibraryDatabase' object is not callable

refresh_all doesn't error, but it didn't refresh the column (it does resort books though)

Darn. It should be

Code:

gui.current_db.data.refresh()

I looked at refresh_all() again. It doesn't clear the caches. data.refresh() does.

chaley · 12-28-2021, 05:26 AM

Quote:

Originally Posted by ownedbycats

Also, unrelated to the above error:

Is it possible to put a strcat inside a first_non_empty? For icon_fanfics shared template, I want to display multiple icons, but if none exist then use a placeholder. This gave me an error:

Code:

program:

first_non_empty(
   strcat
   (
		if "^foo$" inlist $#taglike then 'foo.png:' fi,		
		if "^bar$" inlist $#taglike then 'bar.png:' fi,
		if "^foobar$" inlist $#taglike then 'foobar.png:' fi,
   )
   if $#taglike then 'placeholder.png' fi 
)

I considered a list_difference (I use one for icons_formats) but I have close to 50 entries!

EDIT: I found a very weird workaround that maybe only works because it's a shared template. I put this in column rules/emblems:

Code:

program:

		if icons_fanfic() then icons_fanfic() 
		else 'placeholder.png' fi

Yes, you can use strcat in a first_non_empty. However, you need to be careful about where you put commas. Your template should be

Code:

program:

first_non_empty(
   strcat
   (
		if "^foo$" inlist $#taglike then 'foo.png:' fi,		
		if "^bar$" inlist $#taglike then 'bar.png:' fi,
		if "^foobar$" inlist $#taglike then 'foobar.png:' fi
   ),
   if $#taglike then 'placeholder.png' fi 
)

I removed the comma at the end of line 6 (the foobar line) and added one on line 7 (the ')' line).

ownedbycats · 12-28-2021, 12:53 PM

gui.current_db.data.refresh() worked - made the sorting go weird, so instead of attaching it to the tab-switch chain itself I instead made a chain (bound to Ctrl+F5) that runs the module and then re-applies the view/sort.

chaley · 12-28-2021, 04:25 PM

Quote:

Originally Posted by ownedbycats

gui.current_db.data.refresh() worked - made the sorting go weird, so instead of attaching it to the tab-switch chain itself I instead made a chain (bound to Ctrl+F5) that runs the module and then re-applies the view/sort.

There are methods to redo the sort and search. I am not at my computer to check but IIRC you call them with
gui.library_view.model().resort()
and
gui.library_view.model().research()

ownedbycats · 12-28-2021, 04:46 PM

Code:

from calibre_plugins.action_chains.actions.base import ChainAction

class RefreshAction(ChainAction):

    name = 'Refresh GUI'

    def run(self, gui, settings, chain):
        gui.current_db.data.refresh()
        gui.library_view.model().resort()

This works!

chaley · 12-29-2021, 02:08 PM

Quote:

Originally Posted by ownedbycats

Code:

from calibre_plugins.action_chains.actions.base import ChainAction

class RefreshAction(ChainAction):

    name = 'Refresh GUI'

    def run(self, gui, settings, chain):
        gui.current_db.data.refresh()
        gui.library_view.model().resort()

This works!

Good. As I think you surmised the problem is happening because in your library the value of a composite column can change depending which virtual library is selected. I suspect that you are the only calibre user that does that.

Virtual libraries are internally treated as searches, and calibre expects that a search can't change the value of a field. Unfortunately in your case that expectation is wrong.

ownedbycats · 12-29-2021, 04:51 PM

current_virtual_library_name() is a relatively new function, so I'm possibly the first person to even think of it. Mostly just to see it I could - I already use the function to display/hide icons based on the current VL, so why not column values? Creating the read/unread VLs was a good opportunity to experiment.

I did some across an oddity though. The book list view is sorted, but not in book details.

Click image for larger version

Name: 2021-12-29 17_58_51-calibre — __ My Books __ Read __.png
Views: 662
Size: 268.0 KB
ID: 191090

Not a big issue, but curious as to what's going on seeing as there's no sorting going on in the template.

ownedbycats · 12-31-2021, 04:01 PM

Quick question: Are there any instances where field('column') and $column (or raw_field and $$column) are not interchangeable?

chaley · 12-31-2021, 04:07 PM

Quote:

Originally Posted by ownedbycats

Quick question: Are there any instances where field('column') and $column (or raw_field and $$column) are not interchangeable?

Only one that I know of and that doesn't strictly conform to your question -- when the field name is itself variable. For example, the expression:

Code:

x = field(substr($a, 1, 10))

cannot be expressed in $ notation.

ownedbycats · 01-06-2022, 09:39 PM

Question: Is it possible to set variables outside of the stored template?

Context: I am making this template meant for use in the column colouring.

Code:

program:

## date = $#datecol;
now = format_date(today(), 'yyyy-MM-dd');

		if days_between(date, now) <= '1' then '#aaaaa'
		elif days_between(date, now) <= '3' then '#bbbbb'
		elif days_between(date, now) <= '7' then '#ccccc' 
		fi

(though it's not quite working as expected - getting #aaaa for everything

)

Note that the date variable is commented out -- I tried saving it as a stored template, colours_days_between. then this in the template tester:

Code:

program:
date = $#fanficupdated;

	colours_daysbetween()

It told me 'date' wasn't found.

I noticed this

Quote:

template(x) – evaluates x as a template. The evaluation is done in its own context, meaning that variables are not shared between the caller and the template evaluation.

so I'm thinking I'm doing this wrong but I'm not sure how to pass variables to the template - I noticed eval, but not sure if that's right.

12-27-2021, 05:22 PM	#257
ownedbycats Custom User Title Posts: 11,012 Karma: 75555555 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Yes, the bulk metadata edit fixes it. I tried making this custom AC module, but it gave me an error: Code: from calibre_plugins.action_chains.actions.base import ChainAction class RefreshAction(ChainAction): name = 'Refresh GUI' def run(self, gui, settings, chain): gui.current_db().refresh()

12-27-2021, 08:19 PM	#260
ownedbycats Custom User Title Posts: 11,012 Karma: 75555555 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Also, unrelated to the above error: Is it possible to put a strcat inside a first_non_empty? For icon_fanfics shared template, I want to display multiple icons, but if none exist then use a placeholder. This gave me an error: Code: program: first_non_empty( strcat ( if "^foo$" inlist $#taglike then 'foo.png:' fi, if "^bar$" inlist $#taglike then 'bar.png:' fi, if "^foobar$" inlist $#taglike then 'foobar.png:' fi, ) if $#taglike then 'placeholder.png' fi ) I considered a list_difference (I use one for icons_formats) but I have close to 50 entries! EDIT: I found a very weird workaround that maybe only works because it's a shared template. I put this in column rules/emblems: Code: program: if icons_fanfic() then icons_fanfic() else 'placeholder.png' fi Last edited by ownedbycats; 12-27-2021 at 08:36 PM.

12-29-2021, 04:51 PM	#267
ownedbycats Custom User Title Posts: 11,012 Karma: 75555555 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	current_virtual_library_name() is a relatively new function, so I'm possibly the first person to even think of it. Mostly just to see it I could - I already use the function to display/hide icons based on the current VL, so why not column values? Creating the read/unread VLs was a good opportunity to experiment. I did some across an oddity though. The book list view is sorted, but not in book details. Not a big issue, but curious as to what's going on seeing as there's no sorting going on in the template. Last edited by ownedbycats; 12-29-2021 at 06:54 PM.

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12-28-2021, 12:53 PM	#263
ownedbycats Custom User Title Posts: 11,012 Karma: 75555555 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	gui.current_db.data.refresh() worked - made the sorting go weird, so instead of attaching it to the tab-switch chain itself I instead made a chain (bound to Ctrl+F5) that runs the module and then re-applies the view/sort.

12-31-2021, 04:01 PM	#268
ownedbycats Custom User Title Posts: 11,012 Karma: 75555555 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Quick question: Are there any instances where field('column') and $column (or raw_field and $$column) are not interchangeable?

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