C#•3y ago

❔ Razor pages view

In this snippet

 @foreach (var cafe in Model.CompanyCafes)
    {        
        @await Html.PartialAsync("Cafe", cafe, new ViewDataDictionary(this.ViewData) { { "ShowImage", true } });        
    }

 @foreach (var cafe in Model.CompanyCafes)
    {        
        @await Html.PartialAsync("Cafe", cafe, new ViewDataDictionary(this.ViewData) { { "ShowImage", true } });        
    }

Where does razor pull the Model.CompanyCafes from? The MS docs regarding model binding is a bit confusing as it assumes I know a lot beforehand

seahood•1/13/23, 2:31 PM

at the top of the razor page code, there should be some

entries, one of those should be , which refers to a class to be used as the model

seahood•1/13/23, 2:32 PM

in the razor code, refers to whatever class was used in the at the top

MessiahOP•1/13/23, 2:32 PM

Oooh that makes sense.

MessiahOP•1/13/23, 2:36 PM

And I pass data to this @model through ViewData[] or one of those [Attributes] ?

seahood•1/13/23, 2:39 PM

so if you create a new razor page in visual studio, there will be a and an associated (you might need to expand the one to see it, like you would a folder). the file is the model for the razor page

seahood•1/13/23, 2:40 PM

i believe the is slightly different, that's something that's just automatically available without having to specify the model (i think)

MessiahOP•1/13/23, 2:40 PM

Yup, one is the view, the other is the viewmodel

seahood•1/13/23, 2:41 PM

so in your snippet, in the model behind, there'll be some , and the view can then access that by using

MessiahOP•1/13/23, 2:42 PM

What's confusing is has to be assigned in the Model class, what if there are multiple object instances from the same class?

seahood•1/13/23, 2:42 PM

can you share the model class if possible?

MessiahOP•1/13/23, 2:43 PM

https://github.com/kontent-ai/sample-app-razorpages/blob/62e2bdd1728add80a54029a2a8f653d993ad38d9/sample-app-razorpages/Pages/Cafes/Index.cshtml

MessiahOP•1/13/23, 2:45 PM

crazy how he can call when his model is
.
There is no /Models/Index.cs

seahood•1/13/23, 2:46 PM

this is the model it refers to
https://github.com/kontent-ai/sample-app-razorpages/blob/62e2bdd1728add80a54029a2a8f653d993ad38d9/sample-app-razorpages/Pages/Cafes/Index.cshtml.cs

seahood•1/13/23, 2:46 PM

no matter what the name of the model behind is in , it will always be referred to after that point as in the view

MessiahOP•1/13/23, 2:48 PM

Oh wow, simple like that. Declare the variable in the Index.cshtml.cs and the view can read it all

MessiahOP•1/13/23, 2:48 PM

I finally understand it, thank you so much!!

seahood•1/13/23, 2:49 PM

yep, and i believe that the attributes is for allowing the view to set values in the model, rather than just having them as "read only" in the view (not 100% on that though)

seahood•1/13/23, 2:49 PM

no problem! this article might be some good further reading
https://www.learnrazorpages.com/razor-pages/model-binding

Model Binding in Razor Pages | Learn Razor Pages

Model Binding in Razor Pages is the process that takes values from an HTTP requests and maps them to Razor Pages PageModel properties or handler method parameters.

MessiahOP•1/13/23, 2:50 PM

thanks for the link also

seahood•1/13/23, 2:50 PM

no probs! good luck!

Accord•1/14/23, 7:33 PM

Was this issue resolved? If so, run

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otherwise I will mark this as stale and this post will be archived until there is new activity.