python - Is it okay to set instance variables in a Django class based view? -


I am trying to get Django class based ideas (CBV).

BlahView (TemplateView): Template_name = 'blah / blah.html' def get_context_data (self, ** kwargs): #code ... def find (self, request, ** kwargs ): # More code ...

Now, I know that I can get request advice from myself. Now to say that I want to parse the parameters of these requests and want them to be stored in the classroom. Can I store it in self.xxx ? Now, obviously how classes work, it is considered directly.

But I can not exclude the flow of control by looking at the definition of see > TemplateView ). as_view () refers to being an 'entry point'

I think about setting the example variable in the beginning of get_context_data () I do not think the right to initialize.

Can I define a __init __ () for my CBV? If so, can there be a threading issue or something like where many page-access probably work with a global example of my parsed data?

I know that this is a bit messy, but I'm just a bit confused of code flow in CBV.

According to django.views.generic.base.View

  • On the default setting Li>
  • On request , the view () is called , it immediately calls and calls to Dispatch )
  • Class installation thread is protected

    • According to django.views.generic.base.view .__ init __ , The request object is out of the scope at this point So that you can not parse it in your own constructor overload.

    However, you can parse the request and set the class view example attributes in a surcharge django.view S.generic.base.View.dispatch , it According to the following: 

      class YourView (SomeView): def send (self, request, * args, ** kwargs): # request here i.e. Self.foo = request.GET.get ('foo', False) # Returns super call (see yours, self). Dispatches (requests, * args, ** kwargs)

    Comments

    Post a Comment

    Popular posts from this blog

    Python SQLAlchemy：AttributeError: Neither 'Column' object nor 'Comparator' object has an attribute 'schema' -

    I tried to create a new database in my project, but when I run the script, I get this error, I have another project, this type of definition worked before, but now it gets a single error. I am using Python 2.7.8 and the version of SQLAlchemy module is 0.9.8. By the way, using a project flask- SQLAlchemy, it works well, I'm confused. Traceback information is as follows: Traceback (most recent call final): File "D: / Projects / IOM / db_create.py", line 4, & lt; Module & gt; From the models the base file "D: \ Projects \ OO-IM \ models.py", in line 15, in the & lt; Module & gt; Column ( 'followed_id', int (), ForeignKey ( 'user.id')) file "C: \ Python27 \ lib \ site-packages \ SQLAlchemy \ SQL \ schema.py", line 369, __new__ schema = metadata. Schema file "C: \ Python27 \ lib \ site-packages \ SQLAlchemy \ SQL \ elements.py", line 662, AttributeError in __getattr__ key): Neither 'column' object nor ...
    Read more

    java - How not to audit a join table and related entities using Hibernate Envers? -

    I use Eners to be hibernate to audit my institutions. I have an audit entity, Foo , which includes a list & lt; Bars & gt; However, I do not want to audit the bar institutions, in the form of properties, I have written that: @inti @edicated public class Foo {@JoinTable (name = "T_FOO_BAR", joinColumns = @JoinColumn (name = "FOO_ID"), inverseJoinColumns = @JoinColumn (Name = "BAR_ID")) @ManyToMany (Cascade = Persist) @ Indited (targetAuditMode = RelationTargetAuditMode.NOT_AUDITED ) Public listing & lt; Bars & gt; GetBars () {Return bars; }} Now, I want to retrieve an amendment of foo : AuditReader reader = AuditReaderFactory.get (GetEntityManager ()); FU modification = (FU) reader.CreativeTeA () .entensEtrevision (Foo Class, 42) .getSingleResult (); Unfortunately, when I want to retrieve all the data (i.e. when it loads lazy times ), error me ORA-00942: table or view is not present , because Tried to query this: Sel...
    Read more

    mongodb - CakePHP paginator ignoring order, but only for certain values -

    While pagging my user model in kppp, I can sort with some values, but not others. For example, I can order results from created or email , for example, but username or reputation seems to come back order by arbitrary command for example with a list of users: $ this-> paginate = array ('condition' => array ( 'User.is_active' = & gt; true), 'border' => 24, 'order' => array ('User.created' => DESC)); Works as expected, but $ this - & gt; Paged = array ('conditions' = & gt; array (' user.isIactive '= & gt; true),' border '= & gt; 24,' command '= & gt; array (' user repeats' = ' & Gt; DESC ')); No, no. I first thought that this could be a database issue, but when I search the database directly, sorted as expected. Note: I am using Mangodebi with the Mongo DB plugin of Ichikawa for the KPPHP; Pagnetizing users are used to work properl...
    Read more