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Previous/Next API 6.x-1.x-de

  Date Added: May 04, 2013  |  Visits: 221

Previous/Next API

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This module allows you to know the previous or next nodes for any given node. This is very useful for providing navigational links to the user without the expensive queries required to dynamically deduce such information on the fly.The use case is two fold:Usability/NavigationFor example, on a site with a gallery of images, you want to show a next/previous link with a thumbnail under each image. Your site's visitor click on the link to show new content or browse it.ScalabilityAlthough the previous and next nodes can be deduced with some SQL work, the queries to do so are very heavy on the database, and can bring a site to its knees. This module solves this problem by storing the previous/next node in a table so lookups are fast. Once the module is installed, it will build this index backwards via cron until all nodes have been indexed. See the "More Info" section below for a detailed post on the positive scalability impacts of implementing this module.ConfigurationThe module can be restricted to certain content types to be included in the previous/next indexing. For example, you want the site's visitors to browse through video and image nodes only, but not blogs and regular pages.The number of nodes to index is defined in the settings too. The default is 200, but you may want to lower that for a site on shared hosts. Once the indexing is complete for all the site's nodes, cron will do do anything. You can always reindex the site using the "Re-Index" button on the settings page.APIThe module provides only one API call. If you do not call that function, this module will do nothing.Examples for using it are:ExampleTo implement the functionality for this module, please see the example in the README.txt file provided with this module.Future developmentAt present, the module does not provide for indexing content by criteria other than the node type.Other use cases may call for additional criteria, for example, a term id, so content is browsed by taxonomy terms. This will require database schema changes and reindexing of the site again.If you have a patch to do this, please submit an issue for it.More infoFor more info on the performance impact of this module on large sites, please read Previous/Next API: a high performance API module for previous/next node.SponsorsDevelopment sponsored by: WebMediaBrands for Ads of the WorldAuthorKhalid Baheyeldin of 2bits.com.The author can also be contacted for paid customizations of this module as well as Drupal consulting, installation, development, and customizations.

Requirements: No special requirements
Platforms: PHP
Keyword: Browse Content Criteria Customizations Database Image Index Indexing Module Nodes Performance Prev Nidnid Previous Previousnext Queries Settings Site
Users rating: 0/10

License: Freeware Size: 10 KB
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