show 'better author and tags editing; partly copied from https://bitbucket.org/SpeedProg/calibreserver

cps/static/css/typeaheadjs.css

@@ -1,93 +0,0 @@
-span.twitter-typeahead .tt-menu,
-span.twitter-typeahead .tt-dropdown-menu {
-  position: absolute;
-  top: 100%;
-  left: 0;
-  z-index: 1000;
-  display: none;
-  float: left;
-  min-width: 160px;
-  padding: 5px 0;
-  margin: 2px 0 0;
-  list-style: none;
-  font-size: 14px;
-  text-align: left;
-  background-color: #ffffff;
-  border: 1px solid #cccccc;
-  border: 1px solid rgba(0, 0, 0, 0.15);
-  border-radius: 4px;
-  -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
-  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
-  background-clip: padding-box;
-}
-span.twitter-typeahead .tt-suggestion {
-  display: block;
-  padding: 3px 20px;
-  clear: both;
-  font-weight: normal;
-  line-height: 1.42857143;
-  color: #333333;
-  white-space: nowrap;
-}
-span.twitter-typeahead .tt-suggestion.tt-cursor,
-span.twitter-typeahead .tt-suggestion:hover,
-span.twitter-typeahead .tt-suggestion:focus {
-  color: #ffffff;
-  text-decoration: none;
-  outline: 0;
-  background-color: #337ab7;
-}
-.input-group.input-group-lg span.twitter-typeahead .form-control {
-  height: 46px;
-  padding: 10px 16px;
-  font-size: 18px;
-  line-height: 1.3333333;
-  border-radius: 6px;
-}
-.input-group.input-group-sm span.twitter-typeahead .form-control {
-  height: 30px;
-  padding: 5px 10px;
-  font-size: 12px;
-  line-height: 1.5;
-  border-radius: 3px;
-}
-span.twitter-typeahead {
-  width: 100%;
-}
-.input-group span.twitter-typeahead {
-  display: block !important;
-  height: 34px;
-}
-.input-group span.twitter-typeahead .tt-menu,
-.input-group span.twitter-typeahead .tt-dropdown-menu {
-  top: 32px !important;
-}
-.input-group span.twitter-typeahead:not(:first-child):not(:last-child) .form-control {
-  border-radius: 0;
-}
-.input-group span.twitter-typeahead:first-child .form-control {
-  border-top-left-radius: 4px;
-  border-bottom-left-radius: 4px;
-  border-top-right-radius: 0;
-  border-bottom-right-radius: 0;
-}
-.input-group span.twitter-typeahead:last-child .form-control {
-  border-top-left-radius: 0;
-  border-bottom-left-radius: 0;
-  border-top-right-radius: 4px;
-  border-bottom-right-radius: 4px;
-}
-.input-group.input-group-sm span.twitter-typeahead {
-  height: 30px;
-}
-.input-group.input-group-sm span.twitter-typeahead .tt-menu,
-.input-group.input-group-sm span.twitter-typeahead .tt-dropdown-menu {
-  top: 30px !important;
-}
-.input-group.input-group-lg span.twitter-typeahead {
-  height: 46px;
-}
-.input-group.input-group-lg span.twitter-typeahead .tt-menu,
-.input-group.input-group-lg span.twitter-typeahead .tt-dropdown-menu {
-  top: 46px !important;
-}

cps/static/js/bootstrap3-typeahead.js

@@ -1,523 +0,0 @@
-/* =============================================================
- * bootstrap3-typeahead.js v3.1.0
- * https://github.com/bassjobsen/Bootstrap-3-Typeahead
- * =============================================================
- * Original written by @mdo and @fat
- * =============================================================
- * Copyright 2014 Bass Jobsen @bassjobsen
- *
- * Licensed under the Apache License, Version 2.0 (the 'License');
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an 'AS IS' BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * ============================================================ */
-
-
-(function (root, factory) {
-
-  'use strict';
-
-  // CommonJS module is defined
-  if (typeof module !== 'undefined' && module.exports) {
-    module.exports = factory(require('jquery'));
-  }
-  // AMD module is defined
-  else if (typeof define === 'function' && define.amd) {
-    define(['jquery'], function ($) {
-      return factory ($);
-    });
-  } else {
-    factory(root.jQuery);
-  }
-
-}(this, function ($) {
-
-  'use strict';
-  // jshint laxcomma: true
-
-
- /* TYPEAHEAD PUBLIC CLASS DEFINITION
-  * ================================= */
-
-  var Typeahead = function (element, options) {
-    this.$element = $(element);
-    this.options = $.extend({}, $.fn.typeahead.defaults, options);
-    this.matcher = this.options.matcher || this.matcher;
-    this.sorter = this.options.sorter || this.sorter;
-    this.select = this.options.select || this.select;
-    this.autoSelect = typeof this.options.autoSelect == 'boolean' ? this.options.autoSelect : true;
-    this.highlighter = this.options.highlighter || this.highlighter;
-    this.render = this.options.render || this.render;
-    this.updater = this.options.updater || this.updater;
-    this.displayText = this.options.displayText || this.displayText;
-    this.source = this.options.source;
-    this.delay = this.options.delay;
-    this.$menu = $(this.options.menu);
-    this.$appendTo = this.options.appendTo ? $(this.options.appendTo) : null;
-    this.shown = false;
-    this.listen();
-    this.showHintOnFocus = typeof this.options.showHintOnFocus == 'boolean' ? this.options.showHintOnFocus : false;
-    this.afterSelect = this.options.afterSelect;
-    this.addItem = false;
-  };
-
-  Typeahead.prototype = {
-
-    constructor: Typeahead,
-
-    select: function () {
-      var val = this.$menu.find('.active').data('value');
-      this.$element.data('active', val);
-      if(this.autoSelect || val) {
-        var newVal = this.updater(val);
-        // Updater can be set to any random functions via "options" parameter in constructor above.
-        // Add null check for cases when updater returns void or undefined.
-        if (!newVal) {
-          newVal = "";
-        }
-        this.$element
-          .val(this.displayText(newVal) || newVal)
-          .change();
-        this.afterSelect(newVal);
-      }
-      return this.hide();
-    },
-
-    updater: function (item) {
-      return item;
-    },
-
-    setSource: function (source) {
-      this.source = source;
-    },
-
-    show: function () {
-      var pos = $.extend({}, this.$element.position(), {
-        height: this.$element[0].offsetHeight
-      }), scrollHeight;
-
-      scrollHeight = typeof this.options.scrollHeight == 'function' ?
-          this.options.scrollHeight.call() :
-          this.options.scrollHeight;
-
-      var element;
-      if (this.shown) {
-        element = this.$menu;
-      } else if (this.$appendTo) {
-        element = this.$menu.appendTo(this.$appendTo);
-      } else {
-        element = this.$menu.insertAfter(this.$element);
-      }
-      element.css({
-          top: pos.top + pos.height + scrollHeight
-        , left: pos.left
-        })
-        .show();
-
-      this.shown = true;
-      return this;
-    },
-
-    hide: function () {
-      this.$menu.hide();
-      this.shown = false;
-      return this;
-    },
-
-    lookup: function (query) {
-      var items;
-      if (typeof(query) != 'undefined' && query !== null) {
-        this.query = query;
-      } else {
-        this.query = this.$element.val() ||  '';
-      }
-
-      if (this.query.length < this.options.minLength && !this.options.showHintOnFocus) {
-        return this.shown ? this.hide() : this;
-      }
-
-      var worker = $.proxy(function() {
-
-        if($.isFunction(this.source)) this.source(this.query, $.proxy(this.process, this));
-        else if (this.source) {
-          this.process(this.source);
-        }
-      }, this);
-
-      clearTimeout(this.lookupWorker);
-      this.lookupWorker = setTimeout(worker, this.delay);
-    },
-
-    process: function (items) {
-      var that = this;
-
-      items = $.grep(items, function (item) {
-        return that.matcher(item);
-      });
-
-      items = this.sorter(items);
-
-      if (!items.length && !this.options.addItem) {
-        return this.shown ? this.hide() : this;
-      }
-
-      if (items.length > 0) {
-        this.$element.data('active', items[0]);
-      } else {
-        this.$element.data('active', null);
-      }
-
-      // Add item
-      if (this.options.addItem){
-        items.push(this.options.addItem);
-      }
-
-      if (this.options.items == 'all') {
-        return this.render(items).show();
-      } else {
-        return this.render(items.slice(0, this.options.items)).show();
-      }
-    },
-
-    matcher: function (item) {
-    var it = this.displayText(item);
-      return ~it.toLowerCase().indexOf(this.query.toLowerCase());
-    },
-
-    sorter: function (items) {
-      var beginswith = []
-        , caseSensitive = []
-        , caseInsensitive = []
-        , item;
-
-      while ((item = items.shift())) {
-        var it = this.displayText(item);
-        if (!it.toLowerCase().indexOf(this.query.toLowerCase())) beginswith.push(item);
-        else if (~it.indexOf(this.query)) caseSensitive.push(item);
-        else caseInsensitive.push(item);
-      }
-
-      return beginswith.concat(caseSensitive, caseInsensitive);
-    },
-
-    highlighter: function (item) {
-          var html = $('<div></div>');
-          var query = this.query;
-          var i = item.toLowerCase().indexOf(query.toLowerCase());
-          var len, leftPart, middlePart, rightPart, strong;
-          len = query.length;
-          if(len === 0){
-              return html.text(item).html();
-          }
-          while (i > -1) {
-              leftPart = item.substr(0, i);
-              middlePart = item.substr(i, len);
-              rightPart = item.substr(i + len);
-              strong = $('<strong></strong>').text(middlePart);
-              html
-                  .append(document.createTextNode(leftPart))
-                  .append(strong);
-              item = rightPart;
-              i = item.toLowerCase().indexOf(query.toLowerCase());
-          }
-          return html.append(document.createTextNode(item)).html();
-    },
-
-    render: function (items) {
-      var that = this;
-      var self = this;
-      var activeFound = false;
-      var data = [];
-      var _category = that.options.separator;
-
-      $.each(items, function (key,value) {
-        // inject separator
-        if (key > 0 && value[_category] !== items[key - 1][_category]){
-          data.push({
-              __type: 'divider'
-          });
-        }
-
-        // inject category header
-        if (value[_category] && (key === 0 || value[_category] !== items[key - 1][_category])){
-          data.push({
-              __type: 'category',
-              name: value[_category]
-          });
-        }
-        data.push(value);
-      });
-
-      items = $(data).map(function (i, item) {
-
-        if ((item.__type || false) == 'category'){
-            return $(that.options.headerHtml).text(item.name)[0];
-        }
-
-        if ((item.__type || false) == 'divider'){
-            return $(that.options.headerDivider)[0];
-        }
-
-        var text = self.displayText(item);
-        i = $(that.options.item).data('value', item);
-        i.find('a').html(that.highlighter(text, item));
-        if (text == self.$element.val()) {
-            i.addClass('active');
-            self.$element.data('active', item);
-            activeFound = true;
-        }
-        return i[0];
-      });
-
-      if (this.autoSelect && !activeFound) {
-        items.filter(':not(.dropdown-header)').first().addClass('active');
-        this.$element.data('active', items.first().data('value'));
-      }
-      this.$menu.html(items);
-      return this;
-    },
-
-    displayText: function(item) {
-      return typeof item !== 'undefined' && typeof item.name != 'undefined' && item.name || item;
-    },
-
-    next: function (event) {
-      var active = this.$menu.find('.active').removeClass('active')
-        , next = active.next();
-
-      if (!next.length) {
-        next = $(this.$menu.find('li')[0]);
-      }
-
-      next.addClass('active');
-    },
-
-    prev: function (event) {
-      var active = this.$menu.find('.active').removeClass('active')
-        , prev = active.prev();
-
-      if (!prev.length) {
-        prev = this.$menu.find('li').last();
-      }
-
-      prev.addClass('active');
-    },
-
-    listen: function () {
-      this.$element
-        .on('focus',    $.proxy(this.focus, this))
-        .on('blur',     $.proxy(this.blur, this))
-        .on('keypress', $.proxy(this.keypress, this))
-        .on('input',    $.proxy(this.input, this))
-        .on('keyup',    $.proxy(this.keyup, this));
-
-      if (this.eventSupported('keydown')) {
-        this.$element.on('keydown', $.proxy(this.keydown, this));
-      }
-
-      this.$menu
-        .on('click', $.proxy(this.click, this))
-        .on('mouseenter', 'li', $.proxy(this.mouseenter, this))
-        .on('mouseleave', 'li', $.proxy(this.mouseleave, this));
-    },
-
-    destroy : function () {
-      this.$element.data('typeahead',null);
-      this.$element.data('active',null);
-      this.$element
-        .off('focus')
-        .off('blur')
-        .off('keypress')
-        .off('input')
-        .off('keyup');
-
-      if (this.eventSupported('keydown')) {
-        this.$element.off('keydown');
-      }
-
-      this.$menu.remove();
-    },
-
-    eventSupported: function(eventName) {
-      var isSupported = eventName in this.$element;
-      if (!isSupported) {
-        this.$element.setAttribute(eventName, 'return;');
-        isSupported = typeof this.$element[eventName] === 'function';
-      }
-      return isSupported;
-    },
-
-    move: function (e) {
-      if (!this.shown) return;
-
-      switch(e.keyCode) {
-        case 9: // tab
-        case 13: // enter
-        case 27: // escape
-          e.preventDefault();
-          break;
-
-        case 38: // up arrow
-          // with the shiftKey (this is actually the left parenthesis)
-          if (e.shiftKey) return;
-          e.preventDefault();
-          this.prev();
-          break;
-
-        case 40: // down arrow
-          // with the shiftKey (this is actually the right parenthesis)
-          if (e.shiftKey) return;
-          e.preventDefault();
-          this.next();
-          break;
-      }
-    },
-
-    keydown: function (e) {
-      this.suppressKeyPressRepeat = ~$.inArray(e.keyCode, [40,38,9,13,27]);
-      if (!this.shown && e.keyCode == 40) {
-        this.lookup();
-      } else {
-        this.move(e);
-      }
-    },
-
-    keypress: function (e) {
-      if (this.suppressKeyPressRepeat) return;
-      this.move(e);
-    },
-    
-    input: function (e) {
-      this.lookup();
-      e.preventDefault();
-    },
-
-    keyup: function (e) {
-      switch(e.keyCode) {
-        case 40: // down arrow
-        case 38: // up arrow
-        case 16: // shift
-        case 17: // ctrl
-        case 18: // alt
-          break;
-
-        case 9: // tab
-        case 13: // enter
-          if (!this.shown) return;
-          this.select();
-          break;
-
-        case 27: // escape
-          if (!this.shown) return;
-          this.hide();
-          break;
-      }
-
-      e.preventDefault();
-   },
-
-   focus: function (e) {
-      if (!this.focused) {
-        this.focused = true;
-        if (this.options.showHintOnFocus) {
-          this.lookup('');
-        }
-      }
-    },
-
-    blur: function (e) {
-      this.focused = false;
-      if (!this.mousedover && this.shown) this.hide();
-    },
-
-    click: function (e) {
-      e.preventDefault();
-      this.select();
-      this.$element.focus();
-      this.hide();
-    },
-
-    mouseenter: function (e) {
-      this.mousedover = true;
-      this.$menu.find('.active').removeClass('active');
-      $(e.currentTarget).addClass('active');
-    },
-
-    mouseleave: function (e) {
-      this.mousedover = false;
-      if (!this.focused && this.shown) this.hide();
-    }
-
-  };
-
-
-  /* TYPEAHEAD PLUGIN DEFINITION
-   * =========================== */
-
-  var old = $.fn.typeahead;
-
-  $.fn.typeahead = function (option) {
-    var arg = arguments;
-     if (typeof option == 'string' && option == 'getActive') {
-        return this.data('active');
-     }
-    return this.each(function () {
-      var $this = $(this)
-        , data = $this.data('typeahead')
-        , options = typeof option == 'object' && option;
-      if (!data) $this.data('typeahead', (data = new Typeahead(this, options)));
-      if (typeof option == 'string' && data[option]) {
-        if (arg.length > 1) {
-          data[option].apply(data, Array.prototype.slice.call(arg ,1));
-        } else {
-          data[option]();
-        }
-      } 
-    });
-  };
-
-  $.fn.typeahead.defaults = {
-        source: [],
-        items: 8,
-        menu: '<ul class="typeahead dropdown-menu" role="listbox"></ul>',
-        item: '<li><a class="dropdown-item" href="#" role="option"></a></li>',
-        minLength: 1,
-        scrollHeight: 0,
-        autoSelect: true,
-        afterSelect: $.noop,
-        addItem: false,
-        delay: 0,
-        separator: 'category',
-        headerHtml: '<li class="dropdown-header"></li>',
-        headerDivider: '<li class="divider" role="separator"></li>'
-  };
-
-  $.fn.typeahead.Constructor = Typeahead;
-
-
- /* TYPEAHEAD NO CONFLICT
-  * =================== */
-
-  $.fn.typeahead.noConflict = function () {
-    $.fn.typeahead = old;
-    return this;
-  };
-
-
- /* TYPEAHEAD DATA-API
-  * ================== */
-
-  $(document).on('focus.typeahead.data-api', '[data-provide="typeahead"]', function (e) {
-    var $this = $(this);
-    if ($this.data('typeahead')) return;
-    $this.typeahead($this.data());
-  });
-
-}));

cps/templates/detail.html

@@ -11,9 +11,14 @@
     </div>
     <div class="col-sm-9 col-lg-9 book-meta">
       <h2>{{entry.title}}</h2>
-      <p class="author"><a href="{{url_for('author', name=entry.authors[0].name) }}">{{entry.authors[0].name}}</a>
+      <p class="author">
-      </p>
+          {% for author in entry.authors %}
-
+            <a href="{{url_for('author', name=author.name) }}">{{author.name}}</a>
+            {% if not loop.last %}
+              &amp;
+            {% endif %}
+          {% endfor %}
+        </p>
       {% if entry.ratings.__len__() > 0 %}
         <div class="rating">
         <p>

cps/templates/edit_book.html

@@ -1,26 +1,6 @@
 {% extends "layout.html" %}
 {% block body %}
 {% if book %}
-<script type="text/javascript">
-$(document).ready(function(){
-	$('input.typeahead').typeahead({
-		name: 'accounts',
-		source: function (query, process) {
-			$.ajax({
-				url: '{{ url_for('get_authors_json') }} ',
-				type: 'POST',
-				dataType: 'JSON',
-				data: 'query=' + query,
-				success: function(data) {
-					console.log(data);
-					process(data);
-				}
-			});
-		}
-	});
-});  
-</script>
-
 <div class="col-sm-3 col-lg-3 col-xs-12">
   <div class="cover">
     {% if book.has_cover is defined %}
@@ -36,12 +16,7 @@ $(document).ready(function(){
     </div>
     <div class="form-group">
       <label for="bookAuthor">Author</label>
-        {% if book.authors|length > 1 %}
+      <input type="text" class="form-control typeahead" name="author_name" id="bookAuthor" value="{{' & '.join(authors)}}" autocomplete="off">
-          {% for author in book.authors %}
-            <p>{{author.name.join(" & ")}}</p>
-          {% endfor %}
-        {% endif %}
-      <input type="text" data-provide="typeahead" class="form-control typeahead" name="author_name" id="bookAuthor" autocomplete="off" value="{{book.authors[0].name}}">
     </div>
     <div class="form-group">
       <label for="description">Description</label>
@@ -78,3 +53,11 @@ $(document).ready(function(){
 </div>
 {% endif %}
 {% endblock %}
+
+{% block js %}
+<script src="{{ url_for('static', filename='js/typeahead.bundle.js') }}"></script>
+<script src="{{ url_for('static', filename='js/edit_books.js') }}"></script>
+{% endblock %}
+{% block header %}
+<link href="{{ url_for('static', filename='css/typeahead.css') }}" rel="stylesheet" media="screen">
+{% endblock %}

cps/templates/index.html

@@ -50,7 +50,14 @@
       </div>
       <div class="meta">
         <p class="title">{{entry.title|shortentitle}}</p>
-        <p class="author"><a href="{{url_for('author', name=entry.authors[0].name) }}">{{entry.authors[0].name}}</a></p>
+        <p class="author">
+          {% for author in entry.authors %}
+            <a href="{{url_for('author', name=author.name) }}">{{author.name}}</a>
+            {% if not loop.last %}
+              &amp;
+            {% endif %}
+          {% endfor %}
+        </p>
         {% if entry.ratings.__len__() > 0 %}
         <div class="rating">
           {% for number in range((entry.ratings[0].rating/2)|int(2)) %}

cps/templates/layout.html

@@ -23,12 +23,12 @@
     <script src="https://code.jquery.com/jquery.js"></script>
     <!-- Include all compiled plugins (below), or include individual files as needed -->
     <script src="{{ url_for('static', filename='js/bootstrap.min.js') }}"></script>
-    <script src="{{ url_for('static', filename='js/bootstrap3-typeahead.js') }}"></script>
     <script src="{{ url_for('static', filename='js/underscore.min.js') }}"></script>
     <script src="{{ url_for('static', filename='js/intention.js') }}"></script>
     <script src="{{ url_for('static', filename='js/context.js') }}"></script>
     <script src="{{ url_for('static', filename='js/plugins.js') }}"></script>
     <script src="{{ url_for('static', filename='js/main.js') }}"></script>
+        {% block header %}{% endblock %}
   </head>
   <body>
     <script>
@@ -156,5 +156,6 @@
         </div>
       </div>
     </div>
+    {% block js %}{% endblock %}
   </body>
 </html>

cps/templates/search.html

@@ -22,7 +22,14 @@
       </div>
       <div class="meta">
         <p class="title">{{entry.title|shortentitle}}</p>
-        <p class="author"><a href="{{url_for('author', name=entry.authors[0].name) }}">{{entry.authors[0].name}}</a></p>
+        <p class="author">
+          {% for author in entry.authors %}
+            <a href="{{url_for('author', name=author.name) }}">{{author.name}}</a>
+            {% if not loop.last %}
+              &amp;
+            {% endif %}
+          {% endfor %}
+        </p>
         {% if entry.ratings.__len__() > 0 %}
         <div class="rating">
           {% for number in range((entry.ratings[0].rating/2)|int(2)) %}

cps/web.py

@@ -245,11 +245,27 @@ def get_opds_download_link(book_id, format):
     
 @app.route("/get_authors_json", methods = ['GET', 'POST'])
 def get_authors_json(): 
-    if request.method == "POST":
+    if request.method == "GET":
-        form = request.form.to_dict()
+        query = request.args.get('q')
-        entries = db.session.execute("select name from authors where name like '%" + form['query'] + "%'")
+        entries = db.session.execute("select name from authors where name like '%" + query + "%'")
-        return json.dumps([dict(r) for r in entries])
+        json_dumps = json.dumps([dict(r) for r in entries])
+        return json_dumps
 
+@app.route("/get_tags_json", methods = ['GET', 'POST'])
+def get_tags_json(): 
+    if request.method == "GET":
+        query = request.args.get('q')
+        entries = db.session.execute("select name from tags where name like '%" + query + "%'")
+        json_dumps = json.dumps([dict(r) for r in entries])
+        return json_dumps
+        
+@app.route("/get_series_json", methods = ['GET', 'POST'])
+def get_series_json(): 
+    if request.method == "GET":
+        query = request.args.get('q')
+        entries = db.session.execute("select name from series where name like '%" + query + "%'")
+        json_dumps = json.dumps([dict(r) for r in entries])
+        return json_dumps
 
 @app.route("/", defaults={'page': 1})
 @app.route('/page/<int:page>')
@@ -679,34 +695,61 @@ def edit_book(book_id):
     ## create the function for sorting...
     db.session.connection().connection.connection.create_function("title_sort",1,db.title_sort)
     book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
+    author_names = []
+    for author in book.authors:
+        author_names.append(author.name)
     if request.method == 'POST':
         edited_books_id = set()
         to_save = request.form.to_dict()
         if book.title != to_save["book_title"]:
             book.title = to_save["book_title"]
             edited_books_id.add(book.id)
- 
+        input_authors = to_save["author_name"].split('&')
-        author_id = book.authors[0].id               
+        input_authors = map(lambda it: it.strip(), input_authors)
-        if book.authors[0].name != to_save["author_name"].strip():
+        # we have all author names now
-            is_author = db.session.query(db.Authors).filter(db.Authors.name == to_save["author_name"].strip()).first()
+        author0_before_edit = book.authors[0].name
+        # 1. search for authors to remove
+        del_authors = []
+        for c_author in book.authors:
+            found = False
+            for inp_author in input_authors:
+                if inp_author == c_author.name:
+                    found = True
+                    break;
+            # if the author was not found in the new list, add him to remove list
+            if not found:
+                del_authors.append(c_author)
+        # 2. search for authors that need to be added
+        add_authors = []
+        for inp_author in input_authors:
+            found = False
+            for c_author in book.authors:
+                if inp_author == c_author.name:
+                    found = True
+                    break;
+            if not found:
+                add_authors.append(inp_author)
+        # if there are authors to remove, we remove them now
+        if len(del_authors) > 0:
+            for del_author in del_authors:
+                book.authors.remove(del_author)
+                authors_books_count = db.session.query(db.Books).filter(db.Books.authors.any(db.Authors.id.is_(del_author.id))).count()
+                if authors_books_count == 0:
+                    db.session.query(db.Authors).filter(db.Authors.id == del_author.id).delete()
+        # if there are authors to add, we add them now!
+        if len(add_authors) > 0:
+            for add_author in add_authors:
+                # check if an author with that name exists
+                t_author = db.session.query(db.Authors).filter(db.Authors.name == add_author).first();
+                # if no author is found add it
+                if t_author == None:
+                    new_author = db.Authors(add_author, add_author, "")
+                    db.session.add(new_author)
+                    t_author = db.session.query(db.Authors).filter(db.Authors.name == add_author).first();
+                # add author to book
+                book.authors.append(t_author)       
+        if author0_before_edit != book.authors[0].name:
             edited_books_id.add(book.id)
-            if book.authors[0].name not in  ("Unknown", "Unbekannt", "", " "):
-                if is_author:
-                    book.authors.append(is_author)
-                    book.authors.remove(db.session.query(db.Authors).get(book.authors[0].id))
-                    authors_books_count = db.session.query(db.Books).filter(db.Books.authors.any(db.Authors.id.is_(author_id))).count()
-                    if authors_books_count == 0:
-                        db.session.query(db.Authors).filter(db.Authors.id == author_id).delete()
-                else:
-                    book.authors[0].name = to_save["author_name"].strip()
-                    for linked_book in db.session.query(db.Books).filter(db.Books.authors.any(db.Authors.id.is_(author_id))).all():
-                        edited_books_id.add(linked_book.id)
-            else:
-                if is_author:
-                    book.authors.append(is_author)
-                else:
-                    book.authors.append(db.Authors(to_save["author_name"].strip(), "", ""))
-                book.authors.remove(db.session.query(db.Authors).get(book.authors[0].id))
         
         if to_save["cover_url"] and os.path.splitext(to_save["cover_url"])[1].lower() == ".jpg":
             img = requests.get(to_save["cover_url"])
@@ -721,14 +764,50 @@ def edit_book(book_id):
         else:
             book.comments.append(db.Comments(text=to_save["description"], book=book.id))
 
-        for tag in to_save["tags"].split(","):
+        input_tags = to_save["tags"].split(',')
-            if tag.strip():
+        input_tags = map(lambda it: it.strip(), input_tags)
-                is_tag = db.session.query(db.Tags).filter(db.Tags.name.like('%' + tag.strip() + '%')).first()
+        input_tags = [x for x in input_tags if x != '']
-                if is_tag:
+        # we have all author names now
-                    book.tags.append(is_tag)
+        # 1. search for tags to remove
-                else:
+        del_tags = []
-                    new_tag = db.Tags(name=tag.strip())
+        for c_tag in book.tags:
-                    book.tags.append(new_tag)
+            found = False
+            for inp_tag in input_tags:
+                if inp_tag == c_tag.name:
+                    found = True
+                    break;
+            # if the tag was not found in the new list, add him to remove list
+            if not found:
+                del_tags.append(c_tag)
+        # 2. search for tags that need to be added
+        add_tags = []
+        for inp_tag in input_tags:
+            found = False
+            for c_tag in book.tags:
+                if inp_tag == c_tag.name:
+                    found = True
+                    break;
+            if not found:
+                add_tags.append(inp_tag)
+        # if there are tags to remove, we remove them now
+        if len(del_tags) > 0:
+            for del_tag in del_tags:
+                book.tags.remove(del_tag)
+                if len(del_tag.books) == 0:
+                    db.session.delete(del_tag)
+        # if there are tags to add, we add them now!
+        if len(add_tags) > 0:
+            for add_tag in add_tags:
+                # check if a tag with that name exists
+                new_tag = db.session.query(db.Tags).filter(db.Tags.name == add_tag).first();
+                # if no tag is found add it
+                if new_tag == None:
+                    new_tag = db.Tags(add_tag)
+                    db.session.add(new_tag)
+                    new_tag = db.session.query(db.Tags).filter(db.Tags.name == add_tag).first();
+                # add tag to book
+                book.tags.append(new_tag) 
+        
         if to_save["series"].strip():
             is_series = db.session.query(db.Series).filter(db.Series.name.like('%' + to_save["series"].strip() + '%')).first()
             if is_series:
@@ -744,14 +823,17 @@ def edit_book(book_id):
                 new_rating = db.Ratings(rating=int(to_save["rating"].strip()))
                 book.ratings[0] = new_rating
         db.session.commit()
+        author_names = []
+        for author in book.authors:
+            author_names.append(author.name)
         for b in edited_books_id:
             helper.update_dir_stucture(b)
         if "detail_view" in to_save:
             return redirect(url_for('show_book', id=book.id))
         else:
-            return render_template('edit_book.html', book=book)
+            return render_template('edit_book.html', book=book, authors=author_names)
     else:
-        return render_template('edit_book.html', book=book)
+        return render_template('edit_book.html', book=book, authors=author_names)
 
 @app.route("/upload", methods = ["GET", "POST"])
 @login_required