piwigo/language/en_UK/help/cat_modify.html

<h2>Edit a category</h2>

<h3>Informations</h3>

<ul>

  <li><strong>name</strong>: rename the category (a virtual rename in case 
  of a physical category).</li>

  <li><strong>description</strong>: short text giving a general idea of the content,
  this text will be displayed at the bottom of the thumbnails page.</li>

</ul>

<h3>Move</h3>

<p>If the category is virtual, you can move it. Moving a category means
changing its parent category.</p>

<h3>Options</h3>

<ul>

  <li><strong>Access type</strong>: Permissions management. If you make a
  category private, all its child categories becomes private. If you make a
  category public, all its parent categories becomes public.</li>

  <li><strong>Lock</strong>: The category and its sub-categories will
  be temporary disabled for maintenance.</li>

  <li><strong>Comments</strong>: Authorize users to comment elements of this
  category.</li>

  <li><strong>Authorize upload</strong>: Authorize users to upload
  images files. This option is available for physical (not
  virtual) categories only .</li>

</ul>

<p>You can also manage these options on the "Properties"
management screen (screens <span class="pwgScreen">Upload</span>, <span
class="pwgScreen">Comments</span>, <span class="pwgScreen">Lock</span>,
<span class="pwgScreen">Public/Private</span>, <span
class="pwgScreen">Representative</span> available from <span
class="pwgScreen">Administration, Categories, Properties</span>).</p>

<h3>Sort order</h3>

<p>Use the default images sort order.</p>

<p>Indicate whether this sort order will apply to subcategories also.</p>

<p>Select specific sorting criteria to be used with this category.</p>
<ul>
<li><strong>Creation date</strong>: Picture shooting date</li>
<li><strong>Post date</strong>: Synchronization date</li>
<li><strong>Average rate (*)</strong>: Average rate could be changed by the visitor rating</li>
<li><strong>Most visited (*)</strong>: The current visit might change the most visited order</li>
<li><strong>File name</strong>: Name given in information field</li>
<li><strong>Id</strong>: Internal Id (recent categories have an higher id than previous ones.</li>

</ul>
<p><strong>(*)</strong>Warning: Be sure to test these sort orders by yourself as they can give unexpected results.</p>


<h3>Representant</h3>

<p>The category representative is the thumbnail displayed on the main page (<span class="pwgScreen">category.php</span>) to represent
the category when
it contains only sub-categories and no direct element (just as the root category).</p>

<p>There are 4 different ways to set the representative picture of a category :</p>

<ul>

  <li><span class="pwgScreen">Picture page</span>: one of the action buttons let you set the current picture as the representative for the
  displayed category. This button is available only for administrators.</li>

  <li><span class="pwgScreen">Modify informations about a picture</span> in
  administration. This screen can be reached from <span
  class="pwgScreen">picture.php</span> or <span class="pwgScreen">Batch
  management</span> in <em>unit mode</em>. See the help of this screen for
  details.</li>

  <li><span class="pwgScreen">Administration, Categories, Properties,
  Representative</span>. See the help of this screen for details.</li>

  <li><span class="pwgScreen">Edit a category</span> (the present screen).</li>

</ul>

<p>The choice of a representative depends on the 
<code>allow_random_representative</code> configuration parameter (see <span
class="filename">include/config_default.inc.php</span>).</p>

<p>In default mode (<code>allow_random_representative</code> set to false),
each category containing at least one element is represented by a fixed
element. Once set (at category creation), the representative changes only
when an administrator ask for it. If the representative is not appropriate,
you can ask to <strong>Find a new representant by random</strong>.</p>

<p>If the <code>allow_random_representative</code> configuration parameter is
set to true, a category containing elements may have no fixed
representant. Just use <strong>Delete representant</strong> button.</p>

<p>If the category contains only sub-categories and no element, it can nonetheless be represented by any element thanks to <span class="pwgScreen">Modify
informations about a picture</span> screen. The only option on the current screen
is the <strong>Delete representant</strong> button.</p>

<h3>Link all category elements to a new category</h3>

<ul>

<li><strong>Virtual category name</strong>: Name of the new category to be created, 
all pictures of the current category will be linked to the new one.</li>

<li><strong>Parent category</strong>: Where the new category will be, 
leave empty to create it at root.</li>

</ul>

<h3>Link all category elements to existing categories</h3>

<ul>

<li><strong>Categories</strong>: Choose the destination category.</li>

</ul>

<h3>Send an information email to group members</h3>

<ul>

<li><strong>Group</strong>: recipients group</li>

<li><strong>Mail content</strong>: Free text to send to them.</li>

</ul>