python - How to create mongoengine filter query from fields listed as string rather DocumentFields -


i trying write function can take filter query string , later want parse , create respective filter query used in mongoengine. tried using q() not working string.

working:

return q(id__istartswith=value)

not working:

_query = 'id__istartswith=' + value return q(_query)

any highly appreciated.

you can use keyword expansion. 

_query = {'id__istartswith': value} return q(**_query)

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