10.12Django Form Form

2018-10-12 15:24:23

From form reference connection: https://www.cnblogs.com/yuanchenqi/articles/7614921.html

New use of modelform, more convenient and more concise than the form!

The more you try, the luckier you get! There are more than 30 days to complete the luffycity project and then there are other flask. Reptiles or something, and then you're done!

Tomorrow weekend, the blog to tidy up again!!!!!

Re-optimize your blog project!!! 233333333!

The more effort, the luckier! Never overestimate yourself!

views.py

 fromDjango.shortcutsImportRender,redirect from. ModelsImport* fromDjangoImportForms fromDjango.formsImportWidgets as Wid fromDjango.formsImportModelform#to convert the model into a form meta is a configuration classclassbookform (modelform):classMeta:model= book Fields="__all__"Labels= {            "title":"Book name",            " Price":"Price"        }        #add tags to specific boxesWidgets = {                "title": Wid. TextInput (attrs={"class":"Form-control"})                " Price": Wid. TextInput (attrs={"class":"Form-control"})                "authors": Wid. TextInput (attrs={"class":"Form-control"})            }        #Configuration Error message        #error_messages{        #     "": ""        # }#these are equivalent to the following native Bookform (forms. Form) class"""Bookform of the native"""#class Bookform (forms. Form):#title = forms. Charfield (max_length=32,label= "book name")#Price = forms. Decimalfield (max_digits=8, decimal_places=2,label= "price") # 999999.99#when rendering a specific tag, add something specific#date = forms. Datefield (label= "Date",#widget=widgets. TextInput (attrs={"type": "Date"})#     )## It's okay with the database .##gender =forms. Choicefield (choices= (1, "Male"), (2, "female"), (3, "other" )))## It has to do with the database and the following two##publish =forms. Choicefield (Choices=publish.objects.all (). Values_list ("PK", "title"))## Single-Selection drop-down box#publish=forms. Modelchoicefield (Queryset=publish.objects.all ())#authors=forms. Modelmultiplechoicefield (Queryset=author.objects.all ())defBooks (Request): Book_list=Book.objects.all ()returnRender (Request,"books.html", Locals ())"""using the native form form"""#def addbook (request):#if request.method== "POST":#form = bookform (Request. POST)#if Form.is_valid ():#print ("Cleaned_data", Form.cleaned_data)#Title=form.cleaned_data.get ("title")#price=form.cleaned_data.get ("Price")#date=form.cleaned_data.get ("date")#Publish=form.cleaned_data.get ("Publish")#Authors=form.cleaned_data.get ("authors") # [+]#book_obj=book.objects.create (title=title,price=price,date=date,publish=publish)#Book_obj.authors.add (*authors)#return Redirect ("/books/")#Form=bookform ()#Publish_list=publish.objects.all ()#Author_list=author.objects.all ()#return render (Request, "add.html", Locals ())"""add with Modelform."""defAddbook (Request):ifrequest.method=="POST": Form=Bookform (Request. POST)ifform.is_valid (): Form.save ()returnredirect"/books/")"""Native Form"""#def editbook (request,edit_book_id):#if request.method== "POST":#Title=request. Post.get ("title")#Price=request. Post.get ("Price")#Date=request. Post.get ("date")#Publish_id=request. Post.get ("publish_id")#Author_pk_list=request. Post.getlist ("Author_pk_list") # [+]##Book.objects.filter (pk=edit_book_id). Update (TITLE=TITLE,PRICE=PRICE,DATE=DATE,PUBLISH_ID=PUBLISH_ID) #Book_obj=book.objects.filter (pk=edit_book_id). First ()#Book_obj.authors.set (author_pk_list)#return Redirect ("/books/")#Edit_book=book.objects.filter (pk=edit_book_id). First ()#Form=bookform ()#return render (Request, "edit.html", Locals ())"""Edit_books made with Modelform."""defEditbook (request,edit_book_id): Edit_book= Book.objects.filter (pk=edit_book_id). First ()ifRequest.method = ="POST":        #Pass in a Isinstance object and let him know who to update .form = Bookform (Request. POST, isinstance=Edit_book)ifform.is_valid (): Form.save ()returnredirect"/books/") Form= Bookform (isinstance=Edit_book)returnRender (Request,"edit.html", locals ())

Like Add.html and edit_book.html.

<! DOCTYPE html>"ZH-CN">"UTF-8"> <title>Title</title> <meta name="Viewport"Content="Width=device-width, initial-scale=1">""Method="Post"Novalidate>     {% Csrf_token%}     {% forFieldinchForm%}        <div>{{Field.label}} {{field}}}</div>     {% ENDFOR%}    <input type="Submit"></form></body>
Notes
Native Formforms component Choicefield (Field) Modelchoicefield (Choicefield) Modelmultiplechoicefield (Modelchoicefield )       1designing form components for form forms ModelformclassBook (models. Model): Title=models. Charfield (max_length=32) Price=models. Decimalfield (max_digits=8,decimal_places=2)#999999.99Date=models. Datefield () Publish=models. ForeignKey ("Publish") Authors=models. Manytomanyfield ("Author")    classbookform (forms. Form): Title= Forms. Charfield (max_length=32,label="Book name") Price= Forms. Decimalfield (max_digits=8, decimal_places=2,label="Price")#999999.99Date = forms. Datefield (label="Date", Widgets=widgets. TextInput (attrs={"type":"Date"})        )        #gender=forms. Choicefield (choices= (1, "Male"), (2, "female"), (3, "other" )))        #publish=forms. Choicefield (Choices=publish.objects.all (). Values_list ("PK", "title"))Publish=forms. Modelchoicefield (queryset=Publish.objects.all ()) Authors=forms. Modelmultiplechoicefield (Queryset=author.objects.all ())
10.12Django Form Form