Why are displaying and binding reference fields so hard in asp.net mvc 5? -


in rails, common use code 100% of work required creating edit form contains drop down list reference field foriegn key property:

<%= f.input :section, :as => :radio %>

i'm trying learn asp.net mvc , while there lot love, taking me forever figure out how create drop down list field relates different model.

1) based on everyones advice, i'm going viewmodel pattern, , adding property that

ienumerable<selectlistitem>

2) populate select list item values. (why doesn't default all??)

3) @html.listboxfor(m => m.selectedcategories, model.categorychoices)

4) now, in create/edit method on controller, have read these values , save them?

i feel must missing something. of steps dont bother me except 4. there no automatic binding? (if there is, code doens't work because value empty when try...)

edit: lot of tutorials tried seem reference setting "foreignmodelnameid" field (as in, productid field), model has virtual product field. not sure if affected ability automatically bind or not....

i dont understand purpose of bind="field1,field2,field3" in edit method parameters. can pass foriegn key fields that? need incldue name of key or name of navigation property?


Comments

Post a Comment

Popular posts from this blog

jquery - How do you format the date used in the popover widget title of FullCalendar? -

Image
in fullcalendar, how format date used in popover widget title when clicking '+n more'? code: <div class="fc-popover fc-more-popover"> <div class="fc-header fc-widget-header"> <span class="fc-close fc-icon fc-icon-x"></span> <span class="fc-title">tuesday, april 7</span> ... </div> ... </div> you use daypopoverformat that. determines date format of title of popover created eventlimitclick option. must date formatting string. default value "dddd, mmmm d" english , "ll" other languages.
Read more

Bubble Sort Manually a Linked List in Java -

Image
this first question here. trying manually sort linked list of integers in java , can not figure out wrong code. suggestions? don't error, still have output unordered. tried few different ways, nothing worked. appreciate if can me that. public class node { int data; node nextnode; public node(int data) { this.data = data; this.nextnode = null; } public int getdata() { return this.data; } } // node class public class datalinkedlist implements datainterface { private node head; private int size; public datalinkedlist(){ this.head = null; this.size = 0; } public void add(int data) { node node = new node(data); if (head == null) { head = node; } else { node currentnode = head; while(currentnode.nextnode != null) { currentnode = currentnode.nextnode; } currentnode.nextnode = node; ...
Read more

asp.net mvc - SSO between MVCForum and Umbraco7 -

i need integrate sso between mvcforum (forum of company) , umbraco7 (manages cms company). however struggling shared authentication work. tried several ways suggested on other threads still not running expected. here did: 1. in mvcforum (forum.mywebsite.com) 1.1. machine key in web.xml: <machinekey validationkey="the same key umbraco7" decryptionkey="the same key umbraco7" validation="sha1" decryption="aes" /> 1.2. authenticate forms in web.xml <forms name="my-sso-auth" protection="all" path="/" timeout="43200" domain="forum.mywebsite.com" loginurl="/members/logon" enablecrossappredirects="true" /> 2. in umbraco7 (news.mywebsite.com) 2.1. machine key in web.xml: <machinekey validationkey="the same key mvcforum" decryptionkey="the same key mvcforum" validation="sha1" decryption="aes" /> 2.2. a...
Read more