CLOSED: [2020-03-19 Thu 23:15]
:PROPERTIES:
:ID: 2020-03-18-demo-filetags-filter
:CREATED:  [2020-03-18 Wed 23:39]
:END:
:LOGBOOK:
- State "DONE"       from "NEXT"       [2020-03-19 Thu 23:15]
:END:

This is part of a multi-step demo:

1. [[id:2020-03-18-demo-filetags-intro][Demo introduction]]
2. [[id:2020-03-18-demo-date2name][Adding date- and/or time-stamps to files]]
3. [[id:2020-03-18-demo-appendfilename][Appending some text to file names]]
4. [[id:2020-03-18-demo-filetags-tagging][Tagging files]]
5. *Filter files according to their tags*
6. [[id:2020-03-18-demo-filetags-mk-tagtrees][Generating TagTrees and navigating them]]
7. [[id:2020-03-18-demo-filetags-tag-tagtrees][File manipulation in filtered views or TagTrees]]
8. [[id:2020-03-18-demo-filetags-setup][Quick Setup Instructions]]

------------------------

We now ended up with a reasonable amount of files. To retrieve
specific files, you may want to use filter mechanism. One way of
retrieving specific files using their associated tags is by using the
tag filter feature of [[https://github.com/novoid/filetags][filetags]]:

#+BEGIN_HTML
<img
src="https://raw.githubusercontent.com/novoid/screencasts/master/file_management/filetags_tag_filter.gif"
alt="Screencast showing filter mechanism of filetags"
/>
#+END_HTML

What is shown:

1. From the "Send to" context menu, *the "filetags filter" function*
   is invoked.
2. In the *pop-up window*, you can now specify one or more tags.
   - Feel free to use =TAB=-completion or quick access numbers.
3. The *tags "customerB" and "public" are entered*.
   - Tip: I could have entered "36" instead to select the tags using
     their proposed numbers.
4. A new, temporary, File Explorer window pops up *showing only files*
   that contain *both tags*.
   - This new window shows the content of a temporary folder that is
     populated with the query result. The files shown are shortcuts to
     the original files. So you can open them, change their content
     and save them.
   - Tip: If you need to go to the original file, you may chose "Open
     file location" from the context menu.
5. The *temporary result window* is now *closed*.
   - Don't worry about the content. It will be overwritten with the
     next query.
6. The *next filter query* is done for the tags "customerB" and the tag
   "final". The latter via the number 5.
   - As mentioned above, these numbers are really handy when it comes
     to work efficiently.
7. The result window shows *only files that contain selected tags*.
   - Meanwhile, you already know how this works, right? ;-)
8. Again, the *temporary window is closed*.

Please note that *all filter actions* are *independent from* the file
or file *selection*. They apply to the current folder of the selected
file(s).

Next: [[id:2020-03-18-demo-filetags-mk-tagtrees][Generating TagTrees and navigating them]]