php - How to use "where not" in a Laravel Model Relationship? -

-

i have user table similar to:

=== users === id: int (pk) name: string is_coach: bool ...

and coach request table similar to:

=== coach_requests === id: int (pk) student_id: int(fk => users.id) coach_id: int(fk => users.id) ...

i have corresponding laravel models (i.e. user , coachrequest).

in user model, wish make method such given specified user, return users is_coach = true, except:

  • him/herself ,
  • users have been matched person coach in coach_requests table.

for example consider following sample data:

users

(1, "a", false) (2, "b", true) (3, "c", true) (4, "d", true) (5, "e", true) (6, "f", true)

coach_requests

(1, 2, 3) (2, 2, 4) (3, 3, 2) (4, 3, 6) (5, 4, 5) (6, 4, 6) (7, 5, 6) (8, 6, 5) (9, 1, 4)

now if user with:

  • id 1 (i.e. user "a"), return user ids: 2, 3, 5 , 6
  • id 2, return user ids: 5, 6
  • id 3, return user ids: 4, 5
  • id 4, return user ids: 2, 3
  • id 5, return user ids: 2, 3, 4
  • id 6, return user ids: 2, 3, 4

how can using laravel???

so far have this:

public function scopeoffreecoaches($query) {     return $query->where([         'is_coach' => true,     ]); }

so not much!

many thanks!

this raw query on top of head:

select u.id users u u.is_coach = true , u.id <> ’$userid’ , u.id not in(     select student_id coach_requests     coach_id = ’$userid’ )

quickly done , not tested may have change little.


Comments

Post a Comment

Popular posts from this blog

java - Run spring boot application error: Cannot instantiate interface org.springframework.context.ApplicationListener -

-
i have spring project , try make use spring boot , run @ embadded tomcat following : https://spring.io/guides/gs/rest-service/ this application //@configuration //@enableaspectjautoproxy @springbootapplication @componentscan(basepackages = "gux.prome") public class application { public static void main(string[] args) { springapplication.run(application.class, args); } } if use maven command: mvn spring-boot:run , project starts fine, need debug , run main method @ intelij, exception occurs: exception in thread "main" java.lang.illegalargumentexception: cannot instantiate interface org.springframework.context.applicationlistener : org.springframework.boot.logging.classpathloggingapplicationlistener @ org.springframework.boot.springapplication.createspringfactoriesinstances(springapplication.java:414) @ org.springframework.boot.springapplication.getspringfactoriesinstances(springapplication.java:394) @ org.springframework.bo...
Read more

reactjs - React router and this.props.children - how to pass state to this.props.children -

-
i'm using react-router first time , don't know how think in yet. here's how i'm loading components in nested routes. entry point .js reactdom.render( <router history={hashhistory} > <route path="/" component={app}> <route path="models" component={content}> </route> </router>, document.getelementbyid('app') ); app.js render: function() { return ( <div> <header /> {this.props.children} </div> ); } so child of app content component sent in. i'm using flux , app.js has state , listens changes, don't know how pass state down this.props.children. before using react-router app.js defines children explicitly, passing state natural don't see how now. using couple of react helper methods can add state, props , whatever else this.props.children render: function() { var children = react.ch...
Read more

Excel VBA "Microsoft Windows Common Controls 6.0 (SP6)" Location Changes -

-
i have excel workbook used generate quotations customers. there main page user inputs data, , there buttons generate various pdfs , send them customer. however, 1 user consistently getting error preventing generating , sending pdfs. i beleive "microsoft windows common controls 6.0 (sp6)". it's installed on users' computers. on mine, location "c:\windows\syswow64\mscomctl.ocx" on others "c:\windows\system32\mscomctl.ocx" the user experiencing issues on 32-bit machine, "mscomctl.ocx" file should in system32. have manually put in there, , pointed common controls reference in vba it. issue seems keep reverting looking in syswow64. since folder doesn't exist, can't find it, , can't produce pdfs. i thought perhaps issue user running older version of office (2007) there users on 2013 , 2016. thought perhaps mixture of 64-bit , 32-bit users. user gets sent workbook other users (as quotation process goes further, gets passed ...
Read more