使用Django和Python开发Web站点

1、1.DjangoPythonWeb1.Django1.DjangoDjango和PythonWeb1.Django1.DjangoWebP-ythonDjangoWeb1.Django1.Djangoanaeantae.oIannt1.Django1.DjangoWebDjango项目是一个定DjangoPythonWebboea1.Django1.DjangoPython装了PythonPython要安装PythonPython的版本PythonWeb站ythonDjango1.Django1.DjangoDjangoDjangoDjango框架的最新改进。，请参阅Django的WebDja

2、ngoownlsoavdcnsohjangoproj.cjaonmgo/jangosjan#gooenDjangoDjangojango-an.22.Djangojvan$goagdej:angoonpononoetrthgnonlani.naaatDejansgoaotruhgreapnpna要启动项目和应用程序项，请使用命令，如下所示:3.devdja$ngo-admins.tpayrtprojectdjprojectjangodjproject清单4.djproject_init_.pymanage.pysettings.pyurls.py3.3.manage.pyjosdjangoad

3、mn.pysettngs.py3.3.单5.使用manage.pystartappdevcd$djprojectdev/djpropjyetcht$onmanage.pystartappjobsytonytonjobsytonytonytonyton单6.jobs_init_.pyodels.pyiews.pyytonytonytonytonjngoytonytonytonytonsettings.pyjngojproject.：jobs向settings.pyngo.contrib.auth,ngo.contrib.contenttypesngo.contrib.sessions,ngo.c

4、ontrib.sites,ngytnect-rmelaaptpi，erOnytnstgreS、QMLySQ、iteMicrstiteiteSQL，itesetptspysl：iteeasy_instpayslqliteite在settings.pyitEese.pEatytonytonoyobIoodiesppobldstyooboytonytonytonytonjobs/models.pyrodmjango.dmbpomrotdeIsIaLssocation(modeIs.ModeI):=tmyodeIs.CheId(masta=tmeodeIs.CheId(macoun=tmrodyeIs

5、.CFieId(def_str_(seIf)isfeIf.state:retur%ns%,s,%s%(seIeIse:retur%ns%,s%(seIf.cIength=5nIeunIIg=tThbrI=au5nexIength=.cseIft.yst,asetIfe.,coIaJssob(modeIs.ModeIpub_da=tmoedeIs.DateFieId()job_ti=tmoIedeIs.CharFieId(maxIejob_descri=pmtodeoIns.TextFieId()ytonytonytonytonIomoondeIs.Fore0ytonytonselangmn0y

6、tonyton0ytonytonmanage.py的sql使用manage.pysqlv/djpyptrhomojanecagte.p$ysqljobsATEABLEjobs_(jobiidntegNerOTNULPLRIMpub_daatNeeOTNULL,job_vtaricthleaNrO(T5N0U)job_desctrexiNtpOtTiNoUnLlocatiiont_eigNedrOTNULegNe11.ytonyton12.1ytonyton1=Job.objects.filter(pub1,_1)d)ate_gte=datetime(22=Job.objects.exclude

7、(pub1,_1)d)ate_lt=datetime(202006年1月113.1,_13=Jo4=q3.16.settings.pyngo.contPP14.Python16.settings.pyngo.contPP16.settings.pyngo.contPPbs.moidmeplJosrobtnJob.objectsnotb5:1516.settings.pyngo.contPP16.settings.pyngo.contPPntyttPythonletncountt法执行的则ango.contrib.auth,ango.contrib.contenttypesango.contri

8、b.sessions,ango.contrib.sites,,ango.contrib.admin,inurls.py清单17.过urls.py使用frodmjango.conf.urlism.dpoefr*taultsurlpattern=spatterns(,rdinmcilnu/de(,django.contrib.admin.urls.admin)ngo.contPPncthmonanage.spyncano单18.使用测试服务器/dev/dpjyptrhmojnaneagcte$r.puynalidamtinogdels.errfoorusnd.angvoer

9、s0i.o9n5(post-magic-ruesminsogveatltin)g,dsjproject.settinvelopsmeerinsvtreurnniantghttp:/:8000ittheserwviethCrONTROL(-UCnixor)CTRL-BRE(WAiKndowttocaot8aininngo.contPPngo.contPP19Location19.LocationclasLoscation .ngo.contPP1. .ngo.contPP2020.rjob_idjdprojeedt+.jo)b/sj.vi,ews.det方分发系统使用了正则表达式配置模块，它可以

10、将字符串模式映射为方法e这个系统允许与底层代码完全脱节，从而实现最大的控制和灵活性。模块被创建和定义成配置的默认起点（通过模块中的值）。配置文件的惟一要求是必须包含一个定义模式的对象。这个职位公告板应用程序会在启动时打开一个索引和一个详细视图，它们可以通过以下的映射进行访问：索引视图：显示最近的个职位详细视图：显示为的职位信息这两个视图（索引视图和详细视图）都是在这个应用程序的模块中实现的。在项目的文件中实现这种配置看起来如下所示：21.在djproject/urls.pyromdjango.conf.urls.diefmapou*rltsurlpattern=psatternsrdelude

11、djo.cotr.urls.adrjob_idjdprojeedt+.jo)b/sj.vi,ews.detrjob_idjdprojeedt+.jo)b/sj.vi,ews.detrjosdjprojeet.jos.es.derjos/job_dijpdrojeetd.j+ob)s./vjie,ws.detjod的URL模式，并jos的URL清单22.应用程序级的URL配urls.pyfromdjango.eonf.urls.diefmapou*rltsurlpattern=psatterns(,rdjprojeet.jos.ews.index)iedjprojectjobs.iesjanoi

12、/urlspyindex和detailromdjango.conf.urls.defiamulptosrt*urlpatterns=patterns(.vierindexrobject_iddetaild+),/jobsURL用include的URL被绑定到下面的/jobs部24.djproject/urlspyURLromdjango.conf.urls.defiamulptosrturlpatterns=patternsadminicnl/ude,(django.contrib.admin.urls.adminjoibns/e(.s)janoPytoePe

13、jVT(model-view-tepeurboGonoeviewviewjojPoje问索引页( HYPERLINK http:/loca.views.ieos/jobsyopespose/jobss.pyviewspy单25.jobs/views.py(v1)rodmjango.utils.htimtppowrrHtatptppersesponseefindex(request):retuHrtntpResponseI(nJdVoebxiew)26.jobs/views.py(v2)odmjango.temimpploraCoentelxota,odmjango

14、i.mhptorHptttpResponseojmobs.modelimsporJtobodmjango.temimpploraCtoentelxota,odmjangoi.mhptorHptttpResponseojmobs.modelimsporJtobefindex(request):object_=Jisotb.objects.order_by(-pub_date):t=loader.get_template(jobs/job_list.html)c=Context(objet_obljeicst_:list)retuHrtntpResponse(t.render(c)jobs/job

15、_/views.py(v3)rodmjango.shoirmtpocrgutets_object_roren_d4e0r4_,to_responserojmobs.modelimsporJtobefindex(request):object=lJisotb.objects.order_by(-pub_date):1returrender_to_response(jobs/job_list.html,objecto_bjlecist_l:ist)efdetail(reoqbjeucetst_,id):job=get_obj

16、ect_or_pk4=0o4bj(ecotb,_id)returrender_to_response(jobs/job_detail.htmlobjejcobt)iobjeijobss.py/jobs/Pget_objectojobs/job_lisjobs/jobangvariablesangtagstemplates为了简便起见，我们需要在djpsettings.py的TEMPLATE_28.在settings.pytemplates/path/to/deproject/templates/angtemplateinheitanetitle、extraheantent单29.档templa

17、tes/base.html!DOCThYtmPlPEUBLI-C/W3C/DXTHDTM1L.0Transitional/EN HYPERLINK http:/w/TR/xhtml1/DTD/xhtml1-transitional.htmxlmlns= HYPERLINK http:/whttp:/w/x1m99l9:/xlanhtgm=llaenng=enCompSanitye:%bloctkitle%Pageen%dbloc%kblockextrahe%ablo%blockconte%nte%ndblo/html取消应用程序与项目之间的耦合，我们使用了一个中

18、间基本文件作为Job文件中。在实际的应用程序中，需要有一个正确配置的Web服务器，将这来，并将其放到Web服务器所服务的静态文件中。单30.中间基础文件templates/jobs/base.htmlextendsbase.html%blockextrahe%adbodyfont-stayrlei:al;h1text-alicgent:e.job.titlefont-s1iz2e0:%font-weibgolhdt.job.postedfont-stiytaliec:;/styledblocjaojaoeb现在我们要创建视图所加载并呈现的两个页面模板。jobs/job_list.htmlobject_lis，t它通过索引视图遍历其内容，并显示一个到每条记录的详细templates/jobs/job_list.htmlextendsjobs/base.htm%lblocktitle%JLobist%endbloblockconte%nth1Lobistjob.job_title/lijobhraef=job.id%endf%orendbloc%kjobs/job_detail.htmltemplates/jobs/job_detail.htmlextendsjobs/baseblocktitle%JDobetail%endbloblockconte%ntJDo