has many - Adding, updating and removing associated classes in Grails -

-

i have following relations:

class host {     static hasmany = [ips: hostip, groups: hostgroup]     static belongsto = [hostgroup]     string dns }  class hostip {     static belongsto: [host: host]     string ip }  class hostgroup {     static hasmany = [ hosts: host ]     string name }

i have form in gsp allows edition of host. have dynamic add-edit-remove list add, edit , delete new , current host ips, if host has 2 ips (ip1 , ip2), ip1 removed, ip2 modified ip3 , ip4 added, data sent controller:

original data displayed in form:

ips[0].id = 8 ips[0].ip = ip1 ips[1].id = 9 ips[1].ip = ip2

sent data when submitted:

ips[1].id = 9 ips[1].ip = ip3 ips[2].ip = ip4

this means, that, ip1 removed, neither id or ip sent (its fields removed form), , new ip4 sent (new dynamic field added), without id, doesn't exist yet. so, when doing binddata(host, params), , save(), ip2 updated ip3, , ip4 created, ip1 not deleted. normal behaviour of binddata? if not, can forced?

i'll ask groups relations in post...

regards , in advance.

using grails 2.3.7.

try add

 static mapping = {         ips cascade: 'all-delete-orphan'  }

to host class. more, see http://grails.org/doc/latest/ref/database%20mapping/cascade.html (using configuration book deleted if removed (orphaned) author's books association.)


Comments

Post a Comment

Popular posts from this blog

windows - Single EXE to Install Python Standalone Executable for Easy Distribution -

-
i used pyinstaller create standalone exe file pyqt project. did not use single file option because exe created single file option takes long open. therefore, pyinstaller created dist folder contains bunch of files including program.exe file. create setup.exe file place contents of dist folder in program directory , create shortcut in start menu , on desktop. want super simple user. maybe setup.exe files when download program cnet. found inno-setup, looks promising. however, not know if there special considerations because program standalone program create python/pyqt program. thanks! have experience task? there program using task not know about? inno-setup or nsis easiest use. tell them files include , put them , create nice installer you. wrote short tutorial on experiences using innosetup might find helpful: http://www.blog.pythonlibrary.org/2008/08/27/packaging-wxpymail-for-distribution/ note tutorial based around wxpython app wrote, concepts same.
Read more

c# - Access objects in UserControl from MainWindow in WPF -

-
i have simple xaml, how can change text property of textblock in usercontrol1 mainwindow ? <window x:class="refactorxaml.mainwindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:refactorxaml="clr-namespace:refactorxaml" title="mainwindow" height="350" width="525"> <grid> <grid.rowdefinitions> <rowdefinition height="100"></rowdefinition> <rowdefinition height="100"></rowdefinition> </grid.rowdefinitions> <grid> <refactorxaml:usercontrol1></refactorxaml:usercontrol1> </grid> <grid grid.row="1"> <button>change text</button> </grid> </grid> </window> <usercon...
Read more

javascript - How to name a jQuery function to make a browser's back button work? -

-
i'm trying write function ajaxyfy web site, works perfect, except function button. that's have now: function loading() { if (typeof history.pushstate !== "undefined") { var historycount = 0; $('.menu-item, .logo').on('click','a',function(e){ e.preventdefault(); $(this).data('clicked', true); if ($(this).is('.logo a')) { var homepage = $(this).attr('href'); function1(homepage); history.pushstate(null, null, homepage); } else if ($(this).is('.projects a')) { var projects = $(this).attr('href'); function2(projects); history.pushstate(null, null, projects); } else { var pages = $(this).attr('href'); function3(pages); history.pushstate(null, null, pages); ...
Read more