Rails Froala editor Mathjax implementation

Hello, I have a RoR app that uses Froala Editor to create documents and then convert it to PDF with wicked_PDF gem, I need to copy some equations from Microsoft Word documents and be able to put and edit into the editor. Some people already did this job so I only need the implementation, links attached : [login to view URL] [login to view URL] flow that links propose is : user clicks "insert formula" in froala modal shows, user pase formula code there formula shows formatted in editor user can edit after insert formula Then the formulas must look ok in the generated PDF Regards