49 Task 4 View and Route in LaravelPHP动态网站开发项目教程课件

Project3OverwritetheMemberAdministrationSystemwiththePHPFrameworkLaravelTask4ViewandRouteinLaravelSchoolofSoftware,ChengduPolytechnicLecturer:MuQichunViewandRouteinLaravelNow,let'suseLaraveltorewritethememberadministrationsystemwehavefinished.Findthecompletedmemberadministrationsystem.Copysomecodesforfurtheruse.ViewandRouteinLaravel1.CreatingaviewAtfirst,let'srewritethehomepage.Openindex.php.Thehomepagemainlyincludesonenav.phpfile.Then,copynav.phptoaview,andrenameitasnav.blade.php.Copyindex.phptotheview,andrenameitasindex.blade.php.Opentheindex.blade.phpfile,andmodifytheoriginalinclude_oncefileas:ViewandRouteinLaravel1.CreatingaviewThiscommandisusedforquotingatemplate,withouttheextensionattheendofaquotedfile.Ifthereareotherdirectoriesintheview,theyarequotedbyaddingcorrespondingroutes.Forexample,admin.navreferstoquotingthenav.blade.phpfileintheadmindirectoryundertheview.ViewandRouteinLaravel1.CreatingaviewThe@includecommandofBladeallowsyoutoincludeoneviewtoanotherviewofBlade.Allvariablesinaparentviewcanbeusedinachildview.Althoughthechildviewcaninheritallavailabledataintheparentview,youareallowedtotransmitoneadditionalarrayandusethearrayinthechildview:Iftheviewincludedthrough@includedoesnotexist,Laravelwillthrowanerror.Ifyouarenotsurewhethertheviewtobeincludedexists,usethe@includeIfcommand:ViewandRouteinLaravel2.CreatingarouteToaccessthehomepage,wemustmodifytheroutesettings.Opentheweb.phpfileundertheroutesdirectory,modifytheoriginalrouteconfigurationasfollows:ViewandRouteinLaravel2.CreatingarouteNow,refresh:8000,andthehomepageofthememberadministrationsystemdisplays.ViewandRouteinLaravelInLaravel,arouteisapathtoaccessLaravelfromtheexternal.Inotherwords,theroutedefinesthedetailedserviceprovisionmethodofLaraveltotheexternal.Theroutewillsubmitusers'requeststoadesignatedcontrollerandmethodaccordingtoapre-plannedsolution.TheroutedefinesthedetailedserviceprovisionmethodofLaraveltotheexternal:route-definedprocessorscanbeproperlyaccessedonlywithdesignatedURI,HTTPrequestmethods,androuteparameters(optional).Withoutacorrespondingroute,aprocessorofacorrespondingURLcannotbeaccessed,whethertheprocessorisasimpleclosureoracontrollermethod.ViewandRouteinLaravelNext,let'scheckhowarouteisdesignedandimplementedthroughLaravel.ThemostbasicLaravelrouteacceptsoneURIandoneclosure,providingasimplebutexpressivemethodtodefineroutesandactionswithoutcomplicatedrouteconfigurationfiles:ViewandRouteinLaravelTheaboveroutemeansthatwhenaclientrequest"/"throughtheHTTPGETmethod,Laravelwilldirectlyreturnthecharacterstring"HelloWorld".TheclassRouteusedinforregisteringarouteisreferredtoasFacadeinLaravel,providingoneeasymethodtoaccessservicerouterthatisboundtoaservicecontainer.Therefore,weneedtoquote"useIlluminate\Support\Facades\Route;"whenaddingaclass.ViewandRouteinLaravelArouteallowsyoutoresponseanyHTTPrequestrouteatthetimeofregistration,forexample,thefollowingHTTPrequests:ViewandRouteinLaravelAnothercommonrouteistheviewroute.Ifonlyoneviewisrequiredtobereturnedtoyourroute,usetheRoute::viemethod.Thismethodprovidesaneasybutconvenientmethod,allowingdirectredirectiontoacorrespondingviewthroughadditionallytransmittedURIparameters.What'smore,additionalparameterscanbecarriedintheredirectioncourse.Takingthefollowinginstanceforexample,Aroutealsocanredirecttoacontroller.Definethefollowingroute:ViewandRouteinLaravelTheabovedefinedrouteindicatesthatwhenaclientquestsURI“/user”throughtheHTTPGETmethod,LaravelwillforwardtherequesttotheindexmethodoftheUsersControllerclassforprocess,andthenreturncorrespondingcontenttotheclientthroughtheindexmethod.SummaryAviewinLaravelisafiledisplayinguserinterface,whichusesthebladetemplate,anddefinesasetofbladetemplatetagsinaframework,facilitatinguseofrelevantPHPfunctionsinafile.Ofco