I have not the control on the return method of my php code, because I use API framework function.
For example, it returns to me this data
{{"id":101,"text":"Groupe voiliers classe C","attributes":{"info":"Voiliers de classe C\n Sponsors: Sponsor classe C, , ","table":"phpboost_regate_groupe","idDb":"2"},"state":"closed"},{"id":102,"text":"Groupe voiliers classe D","attributes":{"info":"Voiliers de classe D\n Sponsors: Sponsor classe D, , ","table":"phpboost_regate_groupe","idDb":"2"},"state":"closed"}};
And I must transform in the javascript code in
[{"id":101,"text":"Groupe voiliers classe C","attributes":{"info":"Voiliers de classe C\n Sponsors: Sponsor classe C, , ","table":"phpboost_regate_groupe","idDb":"2"},"state":"closed"},{"id":102,"text":"Groupe voiliers classe D","attributes":{"info":"Voiliers de classe D\n Sponsors: Sponsor classe D, , ","table":"phpboost_regate_groupe","idDb":"2"},"state":"closed"}];
I have test it with my first method and The data appears in the tree after 3 selections of the expand icon. The problem isn't in this json code but in 'loadFilter' which is never called.
Maybe a supplementary parameters to put ?