CODEWITHSUNDEEP
pythongoogle-cloud-platform
jpy
jpy

Reputation: 169

python list of lists to firestore

I have a list that contains lists. I want to save it in firestore under a map that exists

list:

[['1', 'B'],
 ['5', 'E'],
 ['7', 'J']]

Output needed in firestore:

letter_count (map)
     1:'B'
     5:'E'
     7:'J'

Any help?

Upvotes: 1

Views: 933

Answers (3)

JM Gelilio
JM Gelilio

Reputation: 3768

Use update() to add if the list is not existing in document and update the field if it is existing, for example:

UPDATE: convert into dictionary based on @Sabari's answer:

letter_case = {x[0]: x[1] for x in [['1', 'B'], ['5', 'E'], ['7', 'J']]}

doc_ref = db.collection(u'testcol').document(u'testdoc')
doc_ref.update({'letter_count': letter_case })

Upvotes: 0

Darrow Hartman
Darrow Hartman

Reputation: 4383

It is not possible to store lists within lists in firebase, unfortunately (more info on that here: https://stackoverflow.com/a/59068112/8612435). What you can do is convert that list into a dictionary and pass that data into firebase instead:

# convert to dictionary
mydict =  {}

for i in range(len(mylist)):
  mydict[mylist[i][0]] = mylist[i][1]

print(mydict)

# push to firebase
db.collection('collection-name').document('document-name').set({'letter_count': mydict})

(Note: I took inspiration in multidimensional list conversion to dictionary through this post: convert multidimensional list into dictionary python)

Upvotes: 3

Sabari
Sabari

Reputation: 41

Convert list into dictionary before you update it.

letter_case = {x[0]: x[1] for x in [['1', 'B'], ['5', 'E'], ['7', 'J']]}
print(letter_case)

Upvotes: 1

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