Hi,

We need more information. We need to know which field causes the problem. Maybe
the full error message with full traceback could help.

Regards,

A.

Antonis Christofides
http://djangodeployment.com

On 2017-05-18 12:53, Amisha Hans wrote:
> Hey , 
>
> I am facing a lot of issues regarding this foreign key !.
>
> Scenario is a s follows :-
>
> models.py
>
> class ComponentDeprecation(models.Model):
>     row_id = models.IntegerField(primary_key=True)
>     component = models.ForeignKey('SsComponents', db_column='component')
>     submitter = models.CharField(max_length=12)
>     description = models.CharField(max_length=4000)
>     deprecation_date = models.DateField()
>     submitted_date = models.DateTimeField()
>     deprecated_by = models.CharField(max_length=12, blank=True, null=True)
>     deprecated_date = models.DateTimeField(blank=True, null=True)
>
>     class Meta:
>         managed = False
>         db_table = 'component_deprecation'
>
>
> class SsComponents(models.Model):
>     component = models.CharField(primary_key=True, max_length=40)
>     ddts_class = models.CharField(max_length=20)
>     vob = models.CharField(max_length=20)
>     vob_rel_path = models.CharField(max_length=30)
>     owner = models.CharField(max_length=16, blank=True, null=True)
>     comp_main_branch = models.CharField(max_length=60, blank=True, null=True)
>     starting_version = models.CharField(max_length=10, blank=True, null=True)
>     include_list = models.CharField(max_length=60, blank=True, null=True)
>     other_list = models.CharField(max_length=60, blank=True, null=True)
>     created_by = models.CharField(max_length=16)
>     created_date = models.DateField()
>     comp_type = models.CharField(max_length=3, blank=True, null=True)
>     lifecycle = models.CharField(max_length=20, blank=True, null=True)
>     description = models.CharField(max_length=4000, blank=True, null=True)
>     component_approval = models.ForeignKey(ComponentApproval, blank=True,
> null=True)
>     component_deprecation = models.ForeignKey(ComponentDeprecation,
> blank=True, null=True)
>     migrated = models.NullBooleanField()
>     migrated_date = models.DateField(blank=True, null=True)
>     last_updatetime = models.DateField(blank=True, null=True)
>
>     class Meta:
>         managed = False
>         db_table = 'ss_components'
>
> views.py 
>
> def lc_depr_detail_form(request):
>     '''
>     Returns the Fields in the form of List containing Dictionary to be
> rendered to HTML Page for Deprecate Report.
>     '''
>     user_name = request.META['REMOTE_USER']
>     #Fetching the field values from the HTML Page
>     component = request.POST.get('comp')
>     submitter = request.POST.get('submitter')
>     submitted_date = request.POST.get('sub_date')
>     deprecated_by = request.POST.get('dep_by')
>     deprecated_date = request.POST.get('dep_date')
>     stri = ""
>     #Putting the field  values in a string variable
>     if(component and component!= "None"):
>         comp1= component.replace("*", ".*")
>         stri=stri+" ,component=r'^%s$'" % (comp1)
>     if(submitter and submitter!= "None"):
>         submitter1=submitter.replace("*", ".*")
>         stri=stri+" ,submitter__regex=r'^%s$'" % (submitter1)
>     if(submitted_date and submitted_date!= "None"):
>         sub_date1=submitted_date.replace("*", ".*")
>         stri=stri+" ,submitted_date__regex=r'^%s$'" % (sub_date1)
>     if(deprecated_by and deprecated_by!= "None"):
>         dep_by1=deprecated_by.replace("*", ".*")j
>         stri=stri+" ,deprecated_by__regex=r'^%s$'" % (dep_by1)
>     if(deprecated_date and deprecated_date!= "None"):
>         dep_date1=deprecated_date.replace("*", ".*")
>         stri=stri+" ,deprecated_date__regex=r'^%s$'" % (dep_date1)
>     #Substituting the first comma with a space
>     data= re.sub(r',',"",stri,1)
>     #Checking when no data is Entered in the Form
>     if (data == ''):
>         return render(request,
> 'lc_depr.html',{'user':user_name,'message':'Please provide atleast one
> Input','page':r'help/home.html'})
>    
> details="ComponentDeprecation.objects.filter(%s).order_by('-deprecated_date').values('component','deprecated_by','deprecated_date')"
> % (data)
>     print details
>     #Evaluates the details as a Python Expression
>     details_list = eval(details)
>     print details_list
>     #Checking if the list is empty due to Wrong data Input by the User
>     if not details_list:
>         return render(request,
> 'lc_depr_report.html',{'user':user_name,'message':'Oops! Couldnot figure out
> what you were searching for.Please recheck the inputs provided for the
> query','page':r'help/home.html'})
>     else:
>         return render(request,
> 'lc_depr_report.html',{'user':user_name,'details_list':details_list,'page':r'help/home.html'})
>                                                                              
>                                                    
>
> i am getting this error: related field got invalid lookup: regex component 
> only 
> i dont know how to access the value of component .. for other fields no error
> is comming .
>
>
>
>
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