Make a foreach inside a cshtml (view) from a controller

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Make a foreach inside a cshtml (view) from a controller

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I made a code using Linq and jQuery . It turns out that it is giving me a problem that I can not solve, which is to dynamically create a Treeview . Then I had another idea. Make foreach direct in View (cshtml). Here's the question, how do I foreach within View and over a result of a Linq that is in my controller?

Controller :

[HttpPost]
public JsonResult ArvoreAcao(string _uf)
{
    RupturaEntities db = new RupturaEntities();
    var monta_arvore = (from rup in db.Ruptura
      from apr in db.Apresentacao
          .Where(apr => apr.Codigo_Apresentacao == rup.Codigo_Apresentacao)
      from pdv in db.PDV.Where(pdv => pdv.CodigoPDV == rup.CodigoPDV)
      from mot in db.Motivo.Where(mot => mot.IDMotivo == rup.IDMotivo)
          select new {
              rup.IDRuptura,
              rup.DataRuptura,
              rup.IDMotivo,
              mot.Motivo1,
              rup.IDOrigem,
              rup.CodigoPDV,
              pdv.UF,
              pdv.Cidade,
              loja = pdv.Cnpj + " - " + pdv.Descricao,
              rup.Codigo_Apresentacao,
              apr.Unidade_Negocio,
              apr.Franquia,
              apr.Familia,
              apr.Descricao
          }).ToList().Distinct().OrderBy(apr => apr.Descricao);

    return Json(new { monta_arvore }, JsonRequestBehavior.AllowGet);
}

And that would be View where foreach will happen. The foreach would be inside div jqxTree , ie it would erase all static content from there (fake) and do it dynamically.

@{
    ViewBag.Title = "Acao";
    Layout = "~/Views/Shared/_LayoutBase.cshtml";
}

<link href="~/Content/Jqwidgets/jqx.base.css" rel="stylesheet" type="text/css" />

<h2>Tomada de Ação</h2>

<div class="row">
    <div class="col-md-12">
        <div class="col-md-1">
            <label for="cbxCodTipo">UF:</label>
        </div>
        <div class="col-md-4">
            <select class="form-control col-md-6" name="cbxCodTipo" id="cbxCodTipo" 
                onchange=" return MontaCidades();">
                <option value="00">Selecione um estado</option>
                <option value="AC">ACRE</option>
                <option value="AL">ALAGOAS</option>
                <option value="AP">AMAPÁ</option>
                <option value="AM">AMAZONAS</option>
                <option value="BA">BAHIA</option>
                <option value="CE">CEARÁ</option>
                <option value="DF">DISTRITO FEDERAL</option>
                <option value="ES">ESPÍRITO SANTO</option>
                <option value="GO">GOIÁS</option>
                <option value="MA">MARANHÃO</option>
                <option value="MT">MATO GROSSO</option>
                <option value="MS">MATO GROSSO DO SUL</option>
                <option value="MG">MINAS GERAIS</option>
                <option value="PA">PARÁ</option>
                <option value="PB">PARAÍBA</option>
                <option value="PR">PARANÁ</option>
                <option value="PE">PERNAMBUCO</option>
                <option value="PI">PIAUÍ</option>
                <option value="RJ">RIO DE JANEIRO</option>
                <option value="RN">RIO GRANDE DO NORTE</option>
                <option value="RS">RIO GRANDE DO SUL</option>
                <option value="RO">RONDÔNIA</option>
                <option value="RR">RORAIMA</option>
                <option value="SC">SANTA CATARINA</option>
                <option value="SP">SÃO PAULO</option>
                <option value="SE">SERGIPE</option>
                <option value="TO">TOCANTINS</option>
            </select>
        </div>
        <div class="col-md-6">
            <div class="col-md-2">
                <label for="cbxCidade">Cidade:</label>
            </div>
            <select class="form-control col-md-4" name="cbxCidade" id="cbxCidade">
            </select>
        </div>
    </div>

    <div class="col-md-12">
        <div class="col-md-1">
            <label for="cbxRede">Rede:</label>
        </div>
        <div class="col-md-4">
            <select class="form-control col-md-6" name="cbxRede" id="cbxRede"></select>
        </div>
        <div class="col-md-6">
            <div class="col-md-2">
                <label for="cbxRede">Descrição:</label>
            </div>
            <select class="form-control col-md-4" name="cbxDescricao" id="cbxDescricao">
            </select>
        </div>
    </div>

    <div class="col-md-12">
        <div class="col-md-1">
            <label for="cbxProduto">Produto:</label>
        </div>
        <div class="col-md-4">
            <select class="form-control col-md-6" name="cbxProduto" id="cbxProduto">
            </select>
        </div>
    </div>

    <div class="col-md-12">
        <div class="col-md-1">
            <label for="cbxUnNegocio">Unidade Negócio:</label>
        </div>
        <div class="col-md-4">
            <select class="form-control col-md-6" name="cbxUnNegocio" id="cbxUnNegocio">
            </select>
        </div>
    </div>
</div>

<br />

<div id="content">
    <div class="listTree"></div>
    <button class="btn btn-primary" onclick=" return MontaArvore();">Pesquisar</button>
</div>

<br>

<div id='jqxWidget'>
    <div style='float: left; width:auto;'>
        <div id='jqxTree' style='visibility: hidden; float: left; margin-left: 20px;'>
            <ul>
                <li item-checked='false' item-expanded='false'>
                    Produto
                    <ul>
                        <li item-expanded='true'>
                            MIP
                            <ul>
                                <li item-expanded='true'>
                                    Família: ACCUVIT
                                    <ul>
                                        <li>ACCUVIT COMREV FRX30</li>
                                    </ul>
                                </li>
                                <li item-expanded='true'>
                                    Família: FLOGORAL
                                    <ul>
                                        <li>FLOGORAL SPRAY CEREJA CTX30ML</li>
                                        <li>FLOGORAL SPRAY MENTA CTX30ML</li>
                                        <li>FLOGORAL CREM DENTAL CTX70G</li>
                                    </ul>
                                </li>
                            </ul>
                        </li>
                    </ul>
                </li>
            </ul>
        </div>

        <div style='margin-left: 60px; float: left;'>
            <div style='margin-top: 10px;'>
                <input id='jqxCheckBox' type="hidden">
            </div>
        </div>

    </div>
</div>@*Fim da div jqxWidget *@

<div class="row">
    <div class="col-md-12">
        <div class="col-md-2">
            <label for="txtObs">Observação:</label>
        </div>
        <div class="col-md-12">
            <textarea id="txtObs" style="width: 450px;"></textarea>
        </div>
    </div>
</div>

<br />

<div id="content">
    <div class="listTree"></div>
    <button class="btn btn-success" ">Gravar</button>
    @Html.ActionLink("Voltar", "Index", "Home", new {}, new {@class = "btn btn-danger"})
</div>

@*<script class="cssdeck" 
    src="//cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js">
</script>*@
<script class="cssdeck" 
    src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.1/js/bootstrap.min.js">
</script>    
<script src="~/Scripts/Acao/Acao.js"></script>
<script src="~/Scripts/Jqwidgets/jqxcore.js"></script>
<script src="~/Scripts/Jqwidgets/jqxbuttons.js"></script>
<script src="~/Scripts/Jqwidgets/jqxscrollbar.js"></script>
<script src="~/Scripts/Jqwidgets/jqxpanel.js"></script>
<script src="~/Scripts/Jqwidgets/jqxtree.js"></script>
<script src="~/Scripts/Jqwidgets/jqxcheckbox.js"></script>

Important : The controller is called AcaoController . .edmx is within the Model (Folder) and Entity usage.

I did this in the controller :

ViewBag.result_arvore = monta_arvore;

And then this in View .

@foreach (var item in ViewBag.result_arvore)
{
    <ul>
        <li item-checked='false' item-expanded='false'>
            @item.Motivo1
        </li>
    </ul>
}

The result is this:

HowdoImakeaforeach,butontopoftheresultofalinqcomingfromthecontroller?

Imadechangesanditgivesmetheerrorthatforeachcannotbedone,becausemyclassdoesnothaveapublicGetEnumeratorproperty.HowdoIdoit?

Itlookslikethis:MyViewisonlytheforeachpart.Therestarethesameasabove.

<divid='jqxWidget'><divstyle='float:left;width:auto;'><divid='jqxTree'style='visibility:hidden;float:left;margin-left:20px;'>@foreach(variteminModel){<ul><liitem-checked='false'item-expanded='false'>@item.Motivo</li></ul>}</div><divstyle='margin-left:60px;float:left;'><divstyle='margin-top:10px;'><inputid='jqxCheckBox'type="hidden">
            </div>
        </div>

    </div>
</div>

The code in my controller :

public ActionResult Acao()
{
    RupturaEntities db = new RupturaEntities();

    var monta_arvore =   db.Ruptura.Select(rup=> new MontaArvoreAcao {
        IDRuptura = rup.IDRuptura,
        DataRuptura = rup.DataRuptura,
        IDMotivo = rup.IDMotivo,
        Motivo = rup.Motivo.Motivo1,
        IDOrigem = rup.IDOrigem,
        CodigoPDV = rup.CodigoPDV,
        UF  = rup.PDV.UF,
        Cidade = rup.PDV.Cidade,
        CnpjDescricao= rup.PDV.Cnpj + " - " + rup.PDV.Descricao,
        Codigo_Apresentacao = rup.Codigo_Apresentacao,
        Unidade_Negocio = rup.Apresentacao.Unidade_Negocio,
        Franquia = rup.Apresentacao.Franquia,
        Familia  = rup.Apresentacao.Familia,
        Descricao = rup.Apresentacao.Descricao
    }).ToList();

    return View(monta_arvore);
}

My Model :

public class MontaArvoreAcao
{
    public int IDRuptura { get; set; }
    public DateTime DataRuptura { get; set; }
    public int IDMotivo { get; set; }
    public string Motivo { get; set; }
    public int IDOrigem { get; set; }
    public string CodigoPDV { get; set; }
    public string UF { get; set; }
    public string Cidade { get; set; }
    public string CnpjDescricao { get; set; }
    public string Codigo_Apresentacao { get; set; }
    public string Unidade_Negocio { get; set; }
    public string Franquia { get; set; }
    public string Familia { get; set; }
    public string Descricao { get; set; }
}

public class MontaArvoreAcaoDBContext : DbContext
{
    public DbSet<MontaArvoreAcao> montaArvoreAcao { get; set; }
}

html c# entity-framework linq asp.net-mvc

asked by anonymous 11.09.2014 / 18:53

2 answers

0

The content of your ViewBag is likely to be null, you'll need to do a check beforehand.

You also need to tell the type of your ViewBag to perform the iteration and access the properties of the object.

@foreach (var item in (List<SeuTipo>)ViewBag.result_arvore)
{
      <ul>
         <li item-checked='false' item-expanded='false'>
            @item.Motivo1
         </li>
      </ul>
}

15.09.2014 / 14:27

SideKiq for multiple domains Session_destroy () returns error

score 1 · Accepted Answer

Just reinforcing, you can pass the object two ways to view

public ActionResult minhaAcao
{
    List<ObjetoModel> objeto = (from u in objetos select u).toList();
    return View(objeto);
}

Your View would look this way

@model IENumerable<ObjetoModel>

@foreach(var objeto in Model)
{
   @objeto.propriedade <br />
}

And the other way is by using ViewBag that by the way you know how to use.

The error that is giving your problem is that most likely the query is returning null. I still advise using Json's return as follows.

Return Json(monta_arvore);

I use this form in my projects for queries in Json and I have always been successful.

And in your query change to this format.

var monta_arvore = (from rup in db.Ruptura
    from apr in db.Apresentacao.Where(apr => apr.Codigo_Apresentacao == rup.Codigo_Apresentacao)
    from pdv in db.PDV.Where(pdv => pdv.CodigoPDV == rup.CodigoPDV)
    from mot in db.Motivo.Where(mot => mot.IDMotivo == rup.IDMotivo)
        select new {
            rup.IDRuptura,
            rup.DataRuptura,
            rup.IDMotivo,
            mot.Motivo1,
            rup.IDOrigem,
            rup.CodigoPDV,
            pdv.UF,
            pdv.Cidade,
            loja = pdv.Cnpj + " - " + pdv.Descricao,
            rup.Codigo_Apresentacao,
            apr.Unidade_Negocio,
            apr.Franquia,
            apr.Familia,
            apr.Descricao
        }).Distinct().OrderBy(apr => apr.Descricao).ToList();

At your% try_com% do as follows

<ul>
@foreach (var item in Model)
{
   <li item-checked='false' item-expanded='false'>@item.Motivo</li>
}
</ul>