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POHow to validate a model in django rest framework?
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  1. POHow to validate a model in django rest framework?
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    copied!<p>I have a model that is essentially a single table with four lookup tables. One of the lookup tables is to specify a type. Based on the type (of which there are four), the requirements on the fields change. For example if the type is 'Survey' the field number_of_unique_contacts is required, but not for any other type.</p> <p>I considered using multiple table and an DB pattern based on modeling inheritance. But that doesn't make sense as there are only four types, and only 6 fields are in play as 'contextually required' dependent on the type. That being said, I would be open to multiple Models inside of Django, but I prefer the REST framework to only present a single URI (not one per TYPE).</p> <p>The question at hand is: what is the best way to validate the model on POST/PUT requests? Am i better off choosing another database schema (as mentioned I think I have what feels right to me)? Should restructure my python model (again a single main class with four lookups)?</p> <p>I am new to Django and python, so please be gentle (.NET/Java background). And thank you in advance</p> <p>What I think is relevant code (honestly the code doesn't probably matter, as this is more of a design question, but I always feel weird posting w/o code - at lease for context)</p> <pre><code>class MySerializer(serializers.ModelSerializer): proposal_side = serializers.SlugRelatedField(many=False, read_only=False, slug_field='proposal_side') my_proposal_type = serializers.SlugRelatedField(many=False, read_only=False, slug_field='proposal_type') my_proposal_delivery_type = serializers.SlugRelatedField(many=False, read_only=False, slug_field='delivery_type') my_survey_method = serializers.SlugRelatedField(many=False, read_only=False, slug_field='method') class Meta: model = diliModels.Proposal fields = ( 'id' ,'my_proposal_side' ,'my_proposal_type' ,'number_of_participants' ,'cost_per_participants' ,'minimum_dollar_commitment' ,'commercial_terms' ,'is_publicly_visible' ,'is_anonymous' ,'is_republish' ,'name' ,'my_delivery_type' ,'my_survey_method' ,'number_of_unique_contacts' ,'availability_start' ,'availability_end' ,'location_country' ,'location_city' ,'location_state' ,'description' ,'desired_meetings' ) class MyViewSet(viewsets.ModelViewSet): paginate_by = 100 queryset = myModels\ .MyProposal\ .objects\ .prefetch_related('blah') print 'SQL::MyViewSet: ' + str(queryset.query) serializer_class = serializers.MySerializer </code></pre>
 

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