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In my views.py I assign values before saving the form. I used to do it the following way:
projectForm.lat = session_results['lat'] projectForm.lng = session_results['lng'] Now, since the list of variables got a bit long, I wanted to loop over session_results with the following loop (as described by Adam here):
for k,v in session_results.iteritems(): projectForm[k] = v But I get the error 'Project' object does not support item assignment for the loop solution. I have trouble to understand why. Project is the model class, which I use for the ModelForm.
Thank you for your help!
726
The Python "TypeError: 'int' object does not support item assignment" occurs when we try to assign a value to an integer using square brackets. To solve the error, correct the assignment or the accessor, as we can't mutate an integer value.
The Python "TypeError: 'set' object does not support item assignment" occurs when we try to change the value of a specific item in a set. If you meant to declare a list, use square brackets instead of curly braces, e.g. my_list = [] .
The Python "TypeError: 'str' object does not support item assignment" occurs when we try to modify a character in a string. Strings are immutable in Python, so we have to convert the string to a list, replace the list item and join the list elements into a string.
In Python, you cannot access the elements of sets using indexing. If you try to change a set in place using the indexing operator [], you will raise the TypeError: 'set' object does not support item assignment. This error can occur when incorrectly defining a dictionary without colons separating the keys and values.
The error seems clear: model objects do not support item assignment. MyModel.objects.latest('id')['foo'] = 'bar' will throw this same error.
It's a little confusing that your model instance is called projectForm...
To reproduce your first block of code in a loop, you need to use setattr
for k,v in session_results.iteritems(): setattr(projectForm, k, v) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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