Merging ignorable columns

cps/templates/config_edit.html

@@ -62,7 +62,10 @@
       <label for="config_random_books">{{_('No. of random books to show')}}</label>
       <input type="number" min="1" max="30" class="form-control" name="config_random_books" id="config_random_books" value="{% if content.config_random_books != None %}{{ content.config_random_books }}{% endif %}" autocomplete="off">
     </div>
-    
+    <div class="form-group">
+      <label for="config_columns_to_ignore">{{_('Regular expression for ignoring columns')}}</label>
+      <input type="text" class="form-control" name="config_columns_to_ignore" id="config_columns_to_ignore" value="{% if content.config_columns_to_ignore != None %}{{ content.config_columns_to_ignore }}{% endif %}" autocomplete="off">
+    </div>
     <div class="form-group">
       <label for="config_title_regex">{{_('Regular expression for title sorting')}}</label>
       <input type="text" class="form-control" name="config_title_regex" id="config_title_regex" value="{% if content.config_title_regex != None %}{{ content.config_title_regex }}{% endif %}" autocomplete="off">

cps/ub.py

@@ -275,6 +275,7 @@ class Settings(Base):
     config_google_drive_folder = Column(String)
     config_google_drive_calibre_url_base = Column(String)
     config_google_drive_watch_changes_response = Column(String)
+    config_columns_to_ignore = Column(String)
 
     def __repr__(self):
         pass
@@ -310,7 +311,7 @@ class Config:
             self.config_google_drive_watch_changes_response = json.loads(data.config_google_drive_watch_changes_response)
         else:
             self.config_google_drive_watch_changes_response=None
-
+        self.config_columns_to_ignore = data.config_columns_to_ignore
         if (self.config_calibre_dir is not None and not self.config_use_google_drive) or os.path.exists(self.config_calibre_dir + '/metadata.db'):
             self.db_configured = True
         else:
@@ -406,6 +407,12 @@ def migrate_Database():
         conn.execute("ALTER TABLE Settings ADD column `config_google_drive_calibre_url_base` INTEGER DEFAULT 0")
         conn.execute("ALTER TABLE Settings ADD column `config_google_drive_folder` String DEFAULT ''")
         conn.execute("ALTER TABLE Settings ADD column `config_google_drive_watch_changes_response` String DEFAULT ''")
+    try:
+        session.query(exists().where(Settings.config_columns_to_ignore)).scalar()
+    except exc.OperationalError:
+        conn = engine.connect()
+        conn.execute("ALTER TABLE Settings ADD column `config_columns_to_ignore` String DEFAULT ''")
+        session.commit()
     try:
         session.query(exists().where(Settings.config_default_role)).scalar()
         session.commit()

cps/web.py

@@ -1124,7 +1124,16 @@ def show_book(id):
             except:
                 entries.languages[index].language_name = _(
                     isoLanguages.get(part3=entries.languages[index].lang_code).name)
-        cc = db.session.query(db.Custom_Columns).filter(db.Custom_Columns.datatype.notin_(db.cc_exceptions)).all()
+        tmpcc = db.session.query(db.Custom_Columns).filter(db.Custom_Columns.datatype.notin_(db.cc_exceptions)).all()
+
+        if config.config_columns_to_ignore:
+            cc=[]
+            for col in tmpcc:
+                r= re.compile(config.config_columns_to_ignore)
+                if r.match(col.label):
+                    c.append(col)
+        else:
+            cc=tmpcc
         book_in_shelfs = []
         shelfs = ub.session.query(ub.BookShelf).filter(ub.BookShelf.book_id == id).all()
         for entry in shelfs:
@@ -1964,6 +1973,8 @@ def configuration_helper(origin):
                 reboot_required = True
         if "config_calibre_web_title" in to_save:
             content.config_calibre_web_title = to_save["config_calibre_web_title"]
+        if "config_columns_to_ignore" in to_save:
+            content.config_columns_to_ignore = to_save["config_columns_to_ignore"]
         if "config_title_regex" in to_save:
             if content.config_title_regex != to_save["config_title_regex"]:
                 content.config_title_regex = to_save["config_title_regex"]