장고 DRF #1 | Django REST framework Serialization

Django REST framework 
Serialization

 

Creating a model to work with

from django.db import models
from pygments.lexers import get_all_lexers
from pygments.styles import get_all_styles

# Create your models here.
LEXERS = [item for item in get_all_lexers() if item[1]]
LANGUAGE_CHOICES = sorted([(item[1][0], item[0]) for item in LEXERS])
STYLE_CHOICES = sorted([(item, item) for item in get_all_styles()])

class Snippset(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(max_length=100, blank=True, default='')
    code = models.TextField()
    linenos = models.BooleanField(default=False)
    language = models.CharField(choices = LANGUAGE_CHOICES, default='python', max_length=100)
    style = models.CharField(choices=STYLE_CHOICES, default='friendly', max_length=100)
    
    class Meta:
        ordering = ['created']

간단한 모델인 snippet (재사용 가능한 소스 코드의 작은 부분을 일컫는 말)을 만들어주었다. 

 

Creating a Serializer class

from rest_framework import serializers
from snippets.models import Snippet, LANGUAGE_CHOICES,STYLE_CHOICES

class SnippetSerializer(serializers.Serializer):
    id = serializers.IntegerField(read_only=True)
    title = serializers.CharField(required=False, allow_blank=True, max_length=100)
    code = serializers.CharField(style={'base_template':'textarea.html'})
    linenos = serializers.BooleanField(required=False)
    language = serializers.ChoiceField(choices=LANGUAGE_CHOICES, default='python')
    style = serializers.ChoiceField(choices=STYLE_CHOICES, default='friendly')
    
    def create(self, validated_data):
        return Snippet.objects.create(**validated_data)
    def update(self, instance, validated_data):
        instance.title = validated_data.get('title', instance.title)
        instance.code = validated_data.get('code', instance.code)
        instance.linenos = validated_data.get('linenos', instance.linenos)
        instance.language = validated_data.get('language', instance.language)
        instance.style = validated_data.get('style', instance.style)
        instance.save()
        return instance

• id, title, code, linenos, language, style는 직렬화/역직렬화되는 필드
• create(), update(), serializer.save()는 생성/수정되는 방법

 

Working with Serializers

$ python manage.py shell
Python 3.8.10 (default, Jun 22 2022, 20:18:18) 
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information. 
(InteractiveConsole)
>>> from snippets.models import Snippet
>>> from snippets.serializers import SnippetSerializer
>>> from rest_framework.renderers import JSONRenderer
>>> from rest_framework.parsers import JSONParser
>>> snippet = Snippet(code='foo = "bar"\n')
>>> snippet.save()
>>> snippet = Snippet(code='print("hello, world")\n')
>>> snippet.save()
>>> serializer = SnippetSerializer(snippet)    
>>> serializer.data
{'id': 2, 'title': '', 'code': 'print("hello, world")\n', 'linenos': False, 'language': 'python', 'style': 'friendly'}

serializer 이용법

>>> content = JSONRenderer().render(serializer.data)
>>> content
b'{"id":2,"title":"","code":"print(\\"hello, world\\")\\n","linenos":false,"language":"python","style":"friendly"}'

 

>>> content = JSONRenderer().render(serializer.data)
>>> content
b'{"id":2,"title":"","code":"print(\\"hello, world\\")\\n","linenos":false,"language":"python","style":"friendly"}'
>>> import io
>>> stream = io.BytesIO(content)
>>> data = JSONParser().parse(stream)
>>> data
{'id': 2, 'title': '', 'code': 'print("hello, world")\n', 'linenos': False, 'language': 'python', 'style': 'friendly'}
>>> serializer = SnippetSerializer(data=data)
>>> serializer.is_valid()
True
>>> serializer.validated_data
OrderedDict([('title', ''), ('code', 'print("hello, world")'), ('linenos', False), ('language', 'python'), ('style', 'friendly')])
>>> serializer.save()
<Snippet: Snippet object (3)>

 

Using ModelSerializers

class SnippetSerializer(serializers.ModelSerializer):
    class Meta:
        model = Snippet
        fields = ['id', 'title', 'code', 'linenos', 'language', 'style']

 

$ python manage.py shell
Python 3.8.10 (default, Jun 22 2022, 20:18:18) 
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information. 
(InteractiveConsole)
>>> from snippets.serializers import SnippetSerializer
>>> serializer = SnippetSerializer()
>>> print(repr(serializer))
SnippetSerializer():
    id = IntegerField(label='ID', read_only=True)
    title = CharField(allow_blank=True, max_length=100, required=False)    code = CharField(style={'base_template': 'textarea.html'})
    linenos = BooleanField(required=False)
    language = ChoiceField(choices=[('abap', 'ABAP'), ('abnf', 'ABNF'), ('actionscript', 'ActionScript'), ('actionscript3', 'ActionScript 3'), ('ada', 'Ada'), ('adl', 'ADL'), ('agda', 'Agda'), ('aheui', 'Aheui'), 
('alloy', 'Alloy'), ('ambienttalk', 'AmbientTalk'), ('amdgpu', 'AMDGPU'), ('ampl', 'Ampl'), ('ansys', 'ANSYS parametric design language'), ('antlr', 'ANTLR'), ('antlr-actionscript', 'ANTLR With ActionScript Target'), ('antlr-cpp', 'ANTLR With CPP Target'), ('antlr-csharp', 'ANTLR With C# Target'), ('antlr-java', 'ANTLR With Java Target'), ('antlr-objc', 'ANTLR With ObjectiveC Target'), ('antlr-perl', 'ANTLR With Perl Target'), ('antlr-python', 'ANTLR With Python Target'), ('antlr-ruby', 'ANTLR With Ruby Target'), ('apacheconf', 'ApacheConf'), ('apl', 'APL'), ('applescript', 'AppleScript'), ('arduino', 'Arduino'), ('arrow', 'Arrow'), ('asc', 'ASCII armored'), ('aspectj', 'AspectJ'), ('aspx-cs', 'aspx-cs'), ('aspx-vb', 'aspx-vb'), ('asymptote', 'Asymptote'), ('augeas', 'Augeas'), ('autohotkey', 'autohotkey'), ('autoit', 'AutoIt'), ('awk', 'Awk'), ('bare', 'BARE'), ('basemake', 'Base Makefile'), ('bash', 'Bash'), ('batch', 'Batchfile'), ('bbcbasic', 'BBC Basic'), ('bbcode', 'BBCode'), ('bc', 'BC'), ('bdd', 'Bdd'), ('befunge', 'Befunge'), ('berry', 'Berry'), ('bibtex', 'BibTeX'), ('blitzbasic', 'BlitzBasic'), ('blitzmax', 
'BlitzMax'), ('bnf', 'BNF'), ('boa', 'Boa'), ('boo', 'Boo'), ('boogie', 'Boogie'), ('brainfuck', 'Brainfuck'), ('bst', 'BST'), ('bugs', 'BUGS'), ('c', 'C'), ('c-objdump', 'c-objdump'), ('ca65', 'ca65 assembler'), 
('cadl', 'cADL'), ('camkes', 'CAmkES'), ('capdl', 'CapDL'), ('capnp', "Cap'n Proto"), ('cbmbas', 'CBM BASIC V2'), ('cddl', 'CDDL'), ('ceylon', 'Ceylon'), ('cfc', 'Coldfusion CFC'), ('cfengine3', 'CFEngine3'), ('cfm', 'Coldfusion HTML'), ('cfs', 'cfstatement'), ('chaiscript', 'ChaiScript'), ('chapel', 'Chapel'), ('charmci', 'Charmci'), ('cheetah', 'Cheetah'), ('cirru', 'Cirru'), ('clay', 'Clay'), ('clean', 'Clean'), ('clojure', 'Clojure'), ('clojurescript', 'ClojureScript'), ('cmake', 'CMake'), ('cobol', 'COBOL'), ('cobolfree', 'COBOLFree'), ('coffeescript', 'CoffeeScript'), ('comal', 'COMAL-80'), ('common-lisp', 'Common Lisp'), ('componentpascal', 'Component Pascal'), ('console', 'Bash Session'), ('coq', 'Coq'), ('cplint', 'cplint'), ('cpp', 'C++'), ('cpp-objdump', 'cpp-objdump'), ('cpsa', 'CPSA'), ('cr', 'Crystal'), ('crmsh', 'Crmsh'), ('croc', 'Croc'), ('cryptol', 'Cryptol'), ('csharp', 'C#'), ('csound', 'Csound Orchestra'), ('csound-document', 'Csound Document'), ('csound-score', 'Csound Score'), ('css', 'CSS'), ('css+django', 'CSS+Django/Jinja'), ('css+genshitext', 'CSS+Genshi Text'), ('css+lasso', 'CSS+Lasso'), ('css+mako', 'CSS+Mako'), ('css+mozpreproc', 'CSS+mozpreproc'), ('css+myghty', 'CSS+Myghty'), ('css+php', 'CSS+PHP'), ('css+ruby', 'CSS+Ruby'), 
('css+smarty', 'CSS+Smarty'), ('css+ul4', 'CSS+UL4'), ('cuda', 'CUDA'), ('cypher', 'Cypher'), ('cython', 'Cython'), ('d', 'D'), ('d-objdump', 
'd-objdump'), ('dart', 'Dart'), ('dasm16', 'DASM16'), ('debcontrol', 'Debian Control file'), ('debsources', 'Debian Sourcelist'), ('delphi', 'Delphi'), ('devicetree', 'Devicetree'), ('dg', 'dg'), ('diff', 'Diff'), ('django', 'Django/Jinja'), ('docker', 'Docker'), ('doscon', 'MSDOS Session'), ('dpatch', 'Darcs Patch'), ('dtd', 'DTD'), ('duel', 'Duel'), ('dylan', 'Dylan'), ('dylan-console', 'Dylan session'), ('dylan-lid', 'DylanLID'), ('earl-grey', 'Earl Grey'), ('easytrieve', 'Easytrieve'), ('ebnf', 'EBNF'), ('ec', 'eC'), ('ecl', 'ECL'), ('eiffel', 'Eiffel'), ('elixir', 'Elixir'), ('elm', 'Elm'), ('elpi', 'Elpi'), ('emacs-lisp', 'EmacsLisp'), ('email', 'E-mail'), ('erb', 'ERB'), ('erl', 'Erlang erl session'), ('erlang', 'Erlang'), ('evoque', 'Evoque'), ('execline', 'execline'), ('extempore', 'xtlang'), ('ezhil', 'Ezhil'), ('factor', 'Factor'), ('fan', 'Fantom'), ('fancy', 'Fancy'), ('felix', 'Felix'), ('fennel', 'Fennel'), ('fish', 'Fish'), ('flatline', 'Flatline'), ('floscript', 
'FloScript'), ('forth', 'Forth'), ('fortran', 'Fortran'), ('fortranfixed', 'FortranFixed'), ('foxpro', 'FoxPro'), ('freefem', 'Freefem'), ('fsharp', 'F#'), ('fstar', 'FStar'), ('futhark', 'Futhark'), ('gap', 'GAP'), ('gas', 'GAS'), ('gcode', 'g-code'), ('gdscript', 'GDScript'), ('genshi', 'Genshi'), ('genshitext', 'Genshi Text'), ('gherkin', 'Gherkin'), ('glsl', 'GLSL'), ('gnuplot', 'Gnuplot'), ('go', 'Go'), ('golo', 'Golo'), ('gooddata-cl', 'GoodData-CL'), ('gosu', 'Gosu'), ('graphviz', 'Graphviz'), ('groff', 'Groff'), ('groovy', 'Groovy'), ('gsql', 'GSQL'), ('gst', 'Gosu Template'), ('haml', 'Haml'), ('handlebars', 'Handlebars'), ('haskell', 'Haskell'), ('haxe', 'Haxe'), ('haxeml', 'Hxml'), ('hexdump', 'Hexdump'), ('hlsl', 'HLSL'), ('hsail', 'HSAIL'), ('hspec', 'Hspec'), ('html', 'HTML'), ('html+cheetah', 'HTML+Cheetah'), ('html+django', 
'HTML+Django/Jinja'), ('html+evoque', 'HTML+Evoque'), ('html+genshi', 'HTML+Genshi'), ('html+handlebars', 'HTML+Handlebars'), ('html+lasso', 'HTML+Lasso'), ('html+mako', 'HTML+Mako'), ('html+myghty', 'HTML+Myghty'), ('html+ng2', 'HTML + Angular2'), ('html+php', 'HTML+PHP'), ('html+smarty', 'HTML+Smarty'), ('html+twig', 'HTML+Twig'), ('html+ul4', 'HTML+UL4'), ('html+velocity', 'HTML+Velocity'), ('http', 'HTTP'), ('hybris', 
'Hybris'), ('hylang', 'Hy'), ('i6t', 'Inform 6 template'), ('icon', 'Icon'), ('idl', 'IDL'), ('idris', 'Idris'), ('iex', 'Elixir iex session'), ('igor', 'Igor'), ('inform6', 'Inform 6'), ('inform7', 'Inform 7'), ('ini', 'INI'), ('io', 'Io'), ('ioke', 'Ioke'), ('irc', 'IRC logs'), ('isabelle', 'Isabelle'), ('j', 'J'), ('jags', 'JAGS'), ('jasmin', 'Jasmin'), ('java', 'Java'), ('javascript', 'JavaScript'), ('javascript+cheetah', 'JavaScript+Cheetah'), ('javascript+django', 'JavaScript+Django/Jinja'), ('javascript+lasso', 'JavaScript+Lasso'), ('javascript+mako', 'JavaScript+Mako'), ('javascript+mozpreproc', 'Javascript+mozpreproc'), ('javascript+myghty', 'JavaScript+Myghty'), ('javascript+php', 'JavaScript+PHP'), ('javascript+ruby', 'JavaScript+Ruby'), ('javascript+smarty', 
'JavaScript+Smarty'), ('jcl', 'JCL'), ('jlcon', 'Julia console'), ('jmespath', 'JMESPath'), ('js+genshitext', 'JavaScript+Genshi Text'), ('js+ul4', 'Javascript+UL4'), ('jsgf', 'JSGF'), ('jslt', 'JSLT'), ('json', 'JSON'), ('jsonld', 'JSON-LD'), ('jsp', 'Java Server Page'), ('julia', 'Julia'), ('juttle', 'Juttle'), ('k', 'K'), ('kal', 'Kal'), ('kconfig', 
'Kconfig'), ('kmsg', 'Kernel log'), ('koka', 'Koka'), ('kotlin', 'Kotlin'), ('kuin', 'Kuin'), ('lasso', 'Lasso'), ('lean', 'Lean'), ('less', 'LessCss'), ('lighttpd', 'Lighttpd configuration file'), ('lilypond', 'LilyPond'), ('limbo', 'Limbo'), ('liquid', 'liquid'), ('literate-agda', 
'Literate Agda'), ('literate-cryptol', 'Literate Cryptol'), ('literate-haskell', 'Literate Haskell'), ('literate-idris', 'Literate Idris'), ('livescript', 'LiveScript'), ('llvm', 'LLVM'), ('llvm-mir', 'LLVM-MIR'), ('llvm-mir-body', 'LLVM-MIR Body'), ('logos', 'Logos'), ('logtalk', 'Logtalk'), ('lsl', 'LSL'), ('lua', 'Lua'), ('macaulay2', 'Macaulay2'), ('make', 'Makefile'), ('mako', 'Mako'), ('maql', 'MAQL'), ('markdown', 'Markdown'), ('mask', 'Mask'), ('mason', 'Mason'), ('mathematica', 'Mathematica'), ('matlab', 'Matlab'), ('matlabsession', 'Matlab session'), ('maxima', 'Maxima'), ('mcfunction', 'MCFunction'), ('meson', 'Meson'), 
('mime', 'MIME'), ('minid', 'MiniD'), ('miniscript', 'MiniScript'), ('modelica', 'Modelica'), ('modula2', 'Modula-2'), ('monkey', 'Monkey'), ('monte', 'Monte'), ('moocode', 'MOOCode'), ('moonscript', 'MoonScript'), ('mosel', 'Mosel'), ('mozhashpreproc', 'mozhashpreproc'), ('mozpercentpreproc', 'mozpercentpreproc'), ('mql', 'MQL'), ('mscgen', 'Mscgen'), 
('mupad', 'MuPAD'), ('mxml', 'MXML'), ('myghty', 'Myghty'), ('mysql', 'MySQL'), ('nasm', 'NASM'), ('ncl', 'NCL'), ('nemerle', 'Nemerle'), ('nesc', 'nesC'), ('nestedtext', 'NestedText'), ('newlisp', 'NewLisp'), ('newspeak', 'Newspeak'), ('ng2', 'Angular2'), ('nginx', 'Nginx configuration file'), ('nimrod', 'Nimrod'), ('nit', 'Nit'), ('nixos', 'Nix'), ('nodejsrepl', 'Node.js REPL console session'), ('notmuch', 'Notmuch'), ('nsis', 'NSIS'), ('numpy', 'NumPy'), ('nusmv', 'NuSMV'), ('objdump', 'objdump'), ('objdump-nasm', 'objdump-nasm'), ('objective-c', 'Objective-C'), ('objective-c++', 'Objective-C++'), ('objective-j', 'Objective-J'), ('ocaml', 'OCaml'), ('octave', 'Octave'), ('odin', 'ODIN'), ('omg-idl', 'OMG Interface Definition Language'), ('ooc', 'Ooc'), ('opa', 'Opa'), ('openedge', 'OpenEdge ABL'), ('output', 'Text output'), ('pacmanconf', 'PacmanConf'), ('pan', 'Pan'), ('parasail', 'ParaSail'), ('pawn', 'Pawn'), ('peg', 'PEG'), ('perl', 'Perl'), ('perl6', 'Perl6'), ('php', 'PHP'), ('pig', 'Pig'), ('pike', 'Pike'), ('pkgconfig', 'PkgConfig'), ('plpgsql', 'PL/pgSQL'), ('pointless', 'Pointless'), ('pony', 'Pony'), ('postgresql', 'PostgreSQL SQL dialect'), ('postscript', 'PostScript'), ('pot', 'Gettext Catalog'), ('pov', 'POVRay'), ('powershell', 'PowerShell'), ('praat', 'Praat'), ('procfile', 'Procfile'), ('prolog', 'Prolog'), 
('promql', 'PromQL'), ('properties', 'Properties'), ('protobuf', 'Protocol Buffer'), ('psql', 'PostgreSQL console (psql)'), ('psysh', 'PsySH console session for PHP'), ('pug', 'Pug'), ('puppet', 'Puppet'), ('pwsh-session', 'PowerShell Session'), ('py+ul4', 'Python+UL4'), ('py2tb', 'Python 2.x Traceback'), ('pycon', 'Python console session'), ('pypylog', 'PyPy Log'), ('pytb', 'Python Traceback'), ('python', 'Python'), ('python2', 'Python 2.x'), ('q', 'Q'), ('qbasic', 'QBasic'), ('qlik', 'Qlik'), ('qml', 'QML'), ('qvto', 'QVTO'), ('racket', 'Racket'), ('ragel', 'Ragel'), ('ragel-c', 'Ragel in C Host'), ('ragel-cpp', 'Ragel in CPP Host'), ('ragel-d', 'Ragel in D Host'), ('ragel-em', 'Embedded Ragel'), ('ragel-java', 'Ragel in Java Host'), ('ragel-objc', 'Ragel in Objective 
C Host'), ('ragel-ruby', 'Ragel in Ruby Host'), ('rbcon', 'Ruby irb session'), ('rconsole', 'RConsole'), ('rd', 'Rd'), ('reasonml', 'ReasonML'), ('rebol', 'REBOL'), ('red', 'Red'), ('redcode', 'Redcode'), ('registry', 'reg'), ('resourcebundle', 'ResourceBundle'), ('restructuredtext', 'reStructuredText'), ('rexx', 'Rexx'), ('rhtml', 'RHTML'), ('ride', 'Ride'), ('rita', 'Rita'), ('rng-compact', 'Relax-NG Compact'), ('roboconf-graph', 'Roboconf Graph'), ('roboconf-instances', 'Roboconf Instances'), ('robotframework', 'RobotFramework'), ('rql', 'RQL'), ('rsl', 'RSL'), ('ruby', 'Ruby'), ('rust', 'Rust'), ('sarl', 'SARL'), ('sas', 'SAS'), ('sass', 'Sass'), ('savi', 'Savi'), ('scala', 'Scala'), ('scaml', 'Scaml'), ('scdoc', 'scdoc'), ('scheme', 'Scheme'), ('scilab', 'Scilab'), 
('scss', 'SCSS'), ('sed', 'Sed'), ('sgf', 'SmartGameFormat'), ('shen', 
'Shen'), ('shexc', 'ShExC'), ('sieve', 'Sieve'), ('silver', 'Silver'), 
('singularity', 'Singularity'), ('slash', 'Slash'), ('slim', 'Slim'), ('slurm', 'Slurm'), ('smali', 'Smali'), ('smalltalk', 'Smalltalk'), ('smarty', 'Smarty'), ('smithy', 'Smithy'), ('sml', 'Standard ML'), ('snbt', 'SNBT'), ('snobol', 'Snobol'), ('snowball', 'Snowball'), ('solidity', 'Solidity'), ('sophia', 'Sophia'), ('sp', 'SourcePawn'), ('sparql', 'SPARQL'), ('spec', 'RPMSpec'), ('spice', 'Spice'), ('splus', 'S'), ('sql', 'SQL'), ('sql+jinja', 'SQL+Jinja'), ('sqlite3', 'sqlite3con'), ('squidconf', 'SquidConf'), ('srcinfo', 'Srcinfo'), ('ssp', 'Scalate Server 
Page'), ('stan', 'Stan'), ('stata', 'Stata'), ('supercollider', 'SuperCollider'), ('swift', 'Swift'), ('swig', 'SWIG'), ('systemverilog', 'systemverilog'), ('tads3', 'TADS 3'), ('tal', 'Tal'), ('tap', 'TAP'), ('tasm', 'TASM'), ('tcl', 'Tcl'), ('tcsh', 'Tcsh'), ('tcshcon', 'Tcsh Session'), ('tea', 'Tea'), ('teal', 'teal'), ('teratermmacro', 'Tera Term macro'), ('termcap', 'Termcap'), ('terminfo', 'Terminfo'), ('terraform', 
'Terraform'), ('tex', 'TeX'), ('text', 'Text only'), ('thrift', 'Thrift'), ('ti', 'ThingsDB'), ('tid', 'tiddler'), ('tnt', 'Typographic Number Theory'), ('todotxt', 'Todotxt'), ('toml', 'TOML'), ('trac-wiki', 'MoinMoin/Trac Wiki markup'), ('trafficscript', 'TrafficScript'), ('treetop', 'Treetop'), ('tsql', 'Transact-SQL'), ('turtle', 'Turtle'), ('twig', 'Twig'), ('typescript', 'TypeScript'), ('typoscript', 'TypoScript'), ('typoscriptcssdata', 'TypoScriptCssData'), ('typoscripthtmldata', 'TypoScriptHtmlData'), ('ucode', 'ucode'), ('ul4', 'UL4'), ('unicon', 'Unicon'), ('unixconfig', 'Unix/Linux config files'), ('urbiscript', 'UrbiScript'), ('usd', 'USD'), ('vala', 'Vala'), ('vb.net', 'VB.net'), ('vbscript', 'VBScript'), ('vcl', 'VCL'), ('vclsnippets', 'VCLSnippets'), ('vctreestatus', 'VCTreeStatus'), ('velocity', 'Velocity'), ('verilog', 'verilog'), ('vgl', 'VGL'), ('vhdl', 'vhdl'), ('vim', 'VimL'), ('wast', 'WebAssembly'), ('wdiff', 'WDiff'), ('webidl', 'Web IDL'), ('whiley', 'Whiley'), ('x10', 'X10'), ('xml', 'XML'), ('xml+cheetah', 'XML+Cheetah'), 
('xml+django', 'XML+Django/Jinja'), ('xml+evoque', 'XML+Evoque'), ('xml+lasso', 'XML+Lasso'), ('xml+mako', 'XML+Mako'), ('xml+myghty', 'XML+Myghty'), ('xml+php', 'XML+PHP'), ('xml+ruby', 'XML+Ruby'), ('xml+smarty', 'XML+Smarty'), ('xml+ul4', 'XML+UL4'), ('xml+velocity', 'XML+Velocity'), ('xorg.conf', 'Xorg'), ('xquery', 'XQuery'), ('xslt', 'XSLT'), ('xtend', 'Xtend'), ('xul+mozpreproc', 'XUL+mozpreproc'), ('yaml', 'YAML'), ('yaml+jinja', 'YAML+Jinja'), ('yang', 'YANG'), ('zeek', 'Zeek'), ('zephir', 'Zephir'), ('zig', 'Zig')], required=False)
    style = ChoiceField(choices=[('abap', 'abap'), ('algol', 'algol'), 
('algol_nu', 'algol_nu'), ('arduino', 'arduino'), ('autumn', 'autumn'), ('borland', 'borland'), ('bw', 'bw'), ('colorful', 'colorful'), ('default', 'default'), ('dracula', 'dracula'), ('emacs', 'emacs'), ('friendly', 'friendly'), ('friendly_grayscale', 'friendly_grayscale'), ('fruity', 'fruity'), ('github-dark', 'github-dark'), ('gruvbox-dark', 'gruvbox-dark'), ('gruvbox-light', 'gruvbox-light'), ('igor', 'igor'), ('inkpot', 'inkpot'), ('lilypond', 'lilypond'), ('lovelace', 'lovelace'), ('manni', 'manni'), ('material', 'material'), ('monokai', 'monokai'), ('murphy', 'murphy'), ('native', 'native'), ('nord', 'nord'), ('nord-darker', 'nord-darker'), ('one-dark', 'one-dark'), ('paraiso-dark', 'paraiso-dark'), ('paraiso-light', 'paraiso-light'), ('pastie', 'pastie'), ('perldoc', 'perldoc'), ('rainbow_dash', 'rainbow_dash'), ('rrt', 'rrt'), ('sas', 'sas'), ('solarized-dark', 'solarized-dark'), ('solarized-light', 'solarized-light'), ('staroffice', 'staroffice'), ('stata', 'stata'), ('stata-dark', 'stata-dark'), ('stata-light', 'stata-light'), ('tango', 'tango'), ('trac', 'trac'), ('vim', 'vim'), ('vs', 'vs'), ('xcode', 'xcode'), ('zenburn', 'zenburn')], required=False)

 

Writing regular Django views using our Serializer

from django.shortcuts import render
from django.http import HttpResponse, JsonResponse
from django.views.decorators.csrf import csrf_exempt
from rest_framework.parsers import JSONParser
from snippets.models import Snippet
from snippets.serializers import SnippetSerializer

# Create your views here.
@csrf_exempt
def snippet_list(request):
    if request.method == 'GET':
        snippets = Snippet.objects.all()
        serializer = SnippetSerializer(snippets, many=True)
        return JsonResponse(serializer.data, safe=False)
    elif request.method == 'POST':
        data = JSONParser().parse(request)
        serializer = SnippetSerializer(data=data)
        if serializer.is_valid():
            serializer.save()
            return JsonResponse(serializer.data, status=201)
        return JsonResponse(serializer.errors, status=400)

@csrf_exempt
def snippet_detail(request, pk):
    try:
        snippet = Snippet.objects.get(pk=pk)
    except Snippet.DoesNotExist:
        return HttpResponse(status=404)

    if request.method == 'GET':
        serializer = SnippetSerializer(snippet)
        return JsonResponse(serializer.data)
    elif request.method == 'PUT':
        data = JSONParser().parse(request)
        serializer = SnippetSerializer(snippet, data=data)
        if serializer.is_valid():
            serializer.save()
            return JsonResponse(serializer.data)
        return JsonResponse(serializer.errors, status=400)
    elif request.method == 'DELETE':
        snippet.delete()
        return HttpResponse(status=204)

views.py 를 정의해주었다. 

 

from django.urls import path
from snippets import views

urlpatterns = [
    path('snippets/', views.snippet_list),
    path('snippets/<int:pk>/', views.snippet_detail),
]

urls.py

from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('snippets.urls')),
]

아직 제대로 다루지 않은 엣지 케이스가 있음 주의!

 

Testing our first attempt at a Web API

Where are we now

오류 처리 엣지 케이스를 더 처리해주어야 함

장고 API와 비슷한 일반 장고 뷰를 만듦