Flask-Mongodb: retrieve array of data in a field

Question

whenever i do in my mongodb

db.knowledge.find({},{'_id':0,'information':0})

i'm getting result as

{{'keywords': ['link', 'faculty', 'of', 'agriculture', 'admission', 'undergraduate', 'requirements', 'entry', 'full', 'time', 'foa']}

i wanted to know how to get it in flask. i'm trying it as

dbkeywords = knowledge.find({},{'_id':0,'information':0})
print(dbkeywords[0])

i'm getting

{'keywords': ['link', 'faculty', 'of', 'agriculture', 'admission', 'undergraduate', 'requirements', 'entry', 'full', 'time', 'foa']}

i just want it to be like this:

['link', 'faculty', 'of', 'agriculture', 'admission', 'undergraduate', 'requirements', 'entry', 'full', 'time', 'foa']

just like an array/list

sorry sir, i'm completely new to flask and mongodb, what does 'unwind the field keywords' means ? help me :/ — x_P0seid0N_x
– x_P0seid0N_x, Commented Mar 27, 2018 at 13:27
In essence: an unwind splits an embedded list into multiple docs. You can take a look at the docs: api.mongodb.com/python/current/examples/aggregation.html — mbuechmann
– mbuechmann, Commented Mar 27, 2018 at 14:16

Alex Lin · Accepted Answer · 2018-03-27 14:00:12Z

1

You can convert the returned data into a dictionary. Then, to access the list itself in {'keywords': ['link', 'faculty', 'of', 'agriculture', 'admission', 'undergraduate', 'requirements', 'entry', 'full', 'time', 'foa']}, you just do:

temp = {'keywords': ['link', 'faculty', 'of', 'agriculture', 'admission', 'undergraduate', 'requirements', 'entry', 'full', 'time', 'foa']}
the_list = temp['keywords']
print(the_list)

answered Mar 27, 2018 at 14:00

Alex Lin

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2 Comments

x_P0seid0N_x Over a year ago

Thank you so much, genius :D

x_P0seid0N_x Over a year ago

Hello sir , i'm trying to get max value of a field but unable to get any answer maxPercentage = findmax.find().sort({'percentagematch':-1.0}).limit(1) print(maxPercentage)

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