Rough first version of a new blog plugin.

git-svn-id: http://code.elgg.org/elgg/trunk@5370 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 181 insertions, 0 deletions

diff --git a/mod/blog/blog_lib.php b/mod/blog/blog_lib.php
new file mode 100644
index 000000000..0fe1b80d4
--- /dev/null
+++ b/mod/blog/blog_lib.php
@@ -0,0 +1,181 @@
+<?php
+/**
+ * Blog helper functions
+ *
+ * @package Blog
+ * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
+ * @author Curverider Ltd
+ * @copyright Curverider Ltd 2008-2010
+ * @link http://elgg.org/
+ */
+
+
+/**
+ * Returns HTML for a blog post.
+ *
+ * @param int $guid of a blog entity.
+ * @return string html
+ */
+function blog_get_page_content_read($owner_guid, $guid) {
+	if ($guid) {
+		$blog = get_entity($guid);
+
+		if (!elgg_instanceof($blog, 'object', 'blog') && $blog->status == 'final') {
+			$content = elgg_echo('blog:error:post_not_found');
+		} else {
+			elgg_push_breadcrumb($blog->title, $blog->getURL());
+			$content = elgg_view_entity($blog, TRUE);
+		}
+	} else {
+		$content = elgg_list_entities_from_metadata(array(
+			'type' => 'object',
+			'subtype' => 'blog',
+			'owner_guid' => $owner_guid,
+			'full_view' => FALSE,
+			'metadata_name_value_pair' => array('name' => 'status', 'value' => 'final')
+		));
+	}
+
+	return $content;
+}
+
+/**
+ * Returns HTML to edit a blog post.
+ *
+ * @param int $guid
+ * @return string html
+ */
+function blog_get_page_content_edit($guid) {
+	$vars = array();
+	if ($guid) {
+		$blog = get_entity($guid);
+		$vars['entity'] = $blog;
+
+		if (!elgg_instanceof($blog, 'object', 'blog') || !$blog->canEdit()) {
+			$content = elgg_echo('blog:error:post_not_found');
+		}
+
+		elgg_push_breadcrumb($blog->title, $blog->getURL());
+		elgg_push_breadcrumb(elgg_echo('edit'));
+	} else {
+		elgg_push_breadcrumb(elgg_echo('blog:new'));
+	}
+
+	$content = elgg_view('blog/forms/edit', $vars);
+
+	return $content;
+}
+
+/**
+ * Saves a blog
+ *
+ * @param array $info An array of name=>value pairs to save to the blog entity
+ *
+ * @return array('success' => BOOL, 'message' => string);
+ */
+function blog_save_blog($info) {
+	// store errors to pass along
+	$error = FALSE;
+
+	if ($info['guid']) {
+		$entity = get_entity($info['guid']);
+		if (elgg_instanceof($entity, 'object', 'blog') && $entity->canEdit()) {
+			$blog = $entity;
+		} else {
+			$error = elgg_echo('blog:error:post_not_found');
+		}
+	} else {
+		$blog = new ElggObject();
+		$blog->subtype = 'blog';
+	}
+
+	// check required vars
+	$required = array('title', 'description');
+
+	// load from POST and do sanity and access checking
+	foreach ($info as $name => $value) {
+		if (in_array($name, $required) && empty($value)) {
+			$error = elgg_echo("blog:error:missing:$name");
+		}
+
+		if ($error) {
+			break;
+		}
+
+		switch ($name) {
+			case 'tags':
+				if ($value) {
+					$info[$name] = string_to_tag_array($value);
+				} else {
+					unset ($info[$name]);
+				}
+				break;
+
+			case 'excerpt':
+				// restrict to 300 chars
+				if ($value) {
+					$value = substr(strip_tags($value), 0, 300);
+				} else {
+					$value = substr(strip_tags($info['description']), 0, 300);
+				}
+				$info[$name] = $value;
+				break;
+
+			case 'container_guid':
+				// this can't be empty.
+				if (!empty($value)) {
+					if (can_write_to_container($user->getGUID(), $value)) {
+						$info[$name] = $value;
+					} else {
+						$error = elgg_echo("blog:error:cannot_write_to_container");
+					}
+				} else {
+					unset($info[$name]);
+				}
+				break;
+
+			// don't try to set the guid
+			case 'guid':
+				unset($info['guid']);
+				break;
+
+			default:
+				$info[$name] = $value;
+				break;
+		}
+	}
+
+	// assign values to the entity, stopping on error.
+	if (!$error) {
+		foreach ($info as $name => $value) {
+			if (!$blog->$name = $value) {
+				$error = elgg_echo('blog:error:cannot_save');
+				break;
+			}
+		}
+	}
+
+	// only try to save base entity if no errors
+	if (!$error && !$blog->save()) {
+		$error = elgg_echo('blog:error:cannot_save');
+	}
+
+	if ($error) {
+		$return = array(
+			'success' => FALSE,
+			'message' => $error
+		);
+	} else {
+		$return = array(
+			'success' => TRUE,
+			'message' => elgg_echo('blog:message:saved')
+		);
+	}
+
+	return $return;
+}
+
+
+class ElggBlog extends ElggObject {
+
+}
\ No newline at end of file