OJS tips

How to fix the Illegal mix of collations

In an ojs installation that uses multiple languages, there will be the possibility of errors due to different collation sets used between columns. This will happen when you access the detail article page, so you will find the following error: Fatal error: Uncaught Exception: DB Error: Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation …

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What is OJS Server Requirement?

OJS is the currently most popular journal submission, publishing, and review management platform. One of the reasons for this popularity is that this platform provides features that are needed by journal managers or users, such as google scholar features, Crossref, export-import, repositories in PKP PN, and Web archives, many indexing supports, various citation, and so …

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How to solve DB Error: Unknown column ‘Array’ in ‘where clause’

On OJS version 3.1.2.X  when you accessing the article detail page you may encounter the error as “DB Error: Unknown column ‘Array’ in ‘where clause’. This error is not caused by the theme as many of our customers ask us about this issue. This error caused by the RecommendedByAuthor plugin or bug on that plugin. …

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How to register new users as authors automatically on OJS ?

On the user registration, OJS not automatically in the default theme allows new users enrolled as new author roles. Although this can be done by the user itself when they edit their profile by selecting the author, alot of our clients need the registration form to allow the user to register as author without needing …

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Openjournaltheme.com started in 2016 by a passionate team that focused to provide affordable OJS products and services. Our mission to help publishers to be more focus on their content research rather than tackled by many technical OJS issues.

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