Day20 project+ View News list + likes + image verification code + comments and multilevel reviews + Admin + webSocket + kindeditor

Day20
Review:
1. Request Life cycle

2. Middleware
MD = [
"File_path.classname"
]
Process_request "dispensable" Process_response "must have"
Process_request Process_response
Process_request Process_response
Process_request Process_response
Process_request Process_response

Routes, functions
3. Routing system
A. Func-/index/
B./index/(\d+), func ()
C./prev/, include (' Xxx.urls ')
D./detail/, Func-N1
{% URL n1%}
Reverse (' N1 ')
4. View functions
A. FBV
def index (Request):
Request. POST
Request. GET
Request.method
Request. FILES
Request.body
Request. Cookies
Request.session
Request.path_info
Request ...

return render
Return redirect
Return HttpResponse

B. CBV
Class Foo (view):
Def Dispatch
Pass

def get

...
5. Template Engine Rendering
A. Django background finishes rendering all work
B. Dictionaries, tuples, lists:.
C. simple_tag

6. Database Operations
Pymysql
-Write your own SQL statement
Orm
-Classes and objects complete all operations of the database

-Create Class
-Single Table
-One on one
-one-to-many
-Many-to-many
Operation
...

7. Paging


8. Ajax Submissions
$.ajax ({
Url:
Type
Data
DataType:
Headers
Success:function (ARG) {


}

})


9. Django Form Components
Class
Dictionary = ()


obj = Foo (reqest. GET)
Obj.is_valid ()

10. Serialization



11. Other:
Csrf
Cache
Signal

Today's content:
1. Project

Fill data (Admin):
admin.py
From repository Import models

Admin.site.register (models. UserInfo)
Admin.site.register (models. Comment)
Admin.site.register (models. Favor)
Admin.site.register (models. News)
Admin.site.register (models. Newstype)
Create user
Python manage.py createsuperuser
Root
root!23456

Browser:
Htt P://127.0.0.1:8000/admin

Admin Displays:
Class News (models. Model):
Nid = Models. Autofield (primary_key=true)
User_info = models. ForeignKey (' UserInfo ')
Class Meta:
Verbose_name_plural = ' News ' # table name

Def __str__ (self):
return Self.title # line display content
Captcha:
1. PIP3 Install Pillow
2. Check_ code.py and Monaco.ttf "Project and Directory"
3. 4.
def xxxxx (request):
Img_obj, code = Ac.create_validate_code ()
stream = Bytesio ()
IM G_obj.save (Stream, ' png ')
request.session[' check_code '] = code
Return HttpResponse (Stream.getvalue ())
2. View the News list
3. Like
Backend:

Frontend:
position:relative; absolute;
　　　　　　
Function ZMM (ths,txt) {
var fontSize = 5;
var left = 5;
var top = 5;
var opacity = 1;

var tag = document.createelement (' span ');
tag.innerhtml = txt;
Tag.style.position = "absolute";
Tag.style.fontSize = fontSize + ' px ';
Tag.style.left = left+ ' px ';
Tag.style.top = top+ ' px ';
Tag.style.opacity = opacity;
$ (THS). append (tag);

var obj = setinterval (function () {
FontSize = fontSize + 5;
left = left + 5;
top = top-5;
opacity = opacity-0.1;
Tag.style.fontSize = fontSize + ' px ';
Tag.style.left = left+ ' px ';
Tag.style.top = top+ ' px ';
Tag.style.opacity = opacity;
if (Left > 60) {
Clearinterval (obj);
Tag.remove ();
}
},100);
}

4. Image Verification Code
5. Comments and multilevel reviews (**********)
A. Structured data
B. Recursive generation of HTML

7. Background Management
-Simple menu (for fixed number of menus)
-Dynamic Menu
Current URL:/backend/host/

A. Structured data
B. Recursive generation of HTML


6. WebSocket
Http://www.cnblogs.com/wupeiqi/p/6558766.html

8. kindeditor[plug-in]----owed
-Height width
-Item
-
Uploadjson: '/kind/upload_img/',
Extrafileuploadparams: {
' Csrfmiddlewaretoken ': ' {{csrf_token}} '
},
Filepostname: ' Fafafa '


def upload_img (Request):
"""
File Upload
:p Aram Request:
: return:
"""
obj = Request. Files.get (' Fafafa ')

DIC = {
' ERROR ': 0,
' URL ': '/static/imgs/20130809170025.png ',
' Message ': ' Wrong ... '
}

Return HttpResponse (Json.dumps (DIC))


Homework: Finishing Today

Next week content:
1. Alex,
Collaborative development of GitHub
Celery
such as

Day20 project+ View News list + likes + image verification code + comments and multilevel reviews + Admin + webSocket + kindeditor