I'm trying to add a partialView inside a format attr in a WebGrid but I getting this error Error 47 An expression tree may not contain a dynamic operation
This is the code:
#grid.GetHtml(
footerStyle: "paging",
mode: WebGridPagerModes.All,
firstText: "<< First",
previousText: "< Prev",
nextText: "Next >",
lastText: "Last >>",
columns: new[] {
grid.Column("Name",header: "Name",
format:
#<text>
<div>
#foreach (var i in item.list)
{
<div class="content">
#Html.Partial("Menu", i.Type)
</div>
}
</div>
</text>),})
You can try the following code. I hope it will help you
#grid.GetHtml(columns:
grid.Columns(
grid.Column("Partialview", format: #<text>#Html.Partial("Menu", (int)#item.Type)</text>)))
For partial view I have passed integer model. You can pass required model
Related
I want to write in less code a function that will add the active classname and automatically removes all the other active class names. But there is also a unique class name needed for JavaScript in my case. But want to put that all in class name. How can I make this a valid classname. Is there a way to do that so it will not conflict with each other.
<ul class="three">
<li
v-for="(post, index) in listData.data"
:key="index"
:class="'list-item unordered-list ' + post.name.toLowerCase() + { active : activeName == post.name}"
#click="showInfo(post.name, post.description)">
{{ post.name }}
</li>
</ul>
Have a look at the object syntax or array syntax of class binding, which allows binding to an object or array returned by a value. That way you can simplify complex class or style combinations by calling a function from the template, like the example from the docs:
<div v-bind:class="classObject"></div>
...
data: {
isActive: true,
error: null
},
computed: {
classObject: function () {
return {
active: this.isActive && !this.error,
'text-danger': this.error && this.error.type === 'fatal'
}
}
}
<ul class="three">
<li
v-for="(post, index) in listData.data"
:key="index"
:class="['list-item', 'unordered-list ', post.name.toLowerCase(), { active: activeName == post.name }]"
#click="showInfo(post.name, post.description)">
{{ post.name }}
</li>
</ul>
I need help with searching the meteor collection with more parameters.
I am using search query and filters to see certain objects from a collection. The problem is that I want client to load whole collection and then reactively change what the user sees, but only changing the subscribe, not calling server again. Thill now search query + one filter is working okay, but only if I call server every time something changes. Now in my code below you can see that I am doing it with if else elements, but that is not a good way. Any suggestion will help. Thank you.
Template.jobs.onCreated( function showOnCreate() {
Meteor.subscribe('Jobs');
this.searchQuery = new ReactiveVar('');
this.remoteQuery = new ReactiveVar(false);
this.typeQuery = new ReactiveVar(false);
});
Template.jobs.helpers({
job: () => {
query = Template.instance().searchQuery.get();
remoteQuery = Template.instance().remoteQuery.get();
typeQuery = Template.instance().typeQuery.get();
let regex = new RegExp( query, 'i' );
// **************************
// the problem starts here
// **************************
if (Router.current().params.slug) {
const companyJobs = Company.findOne({slug: Router.current().params.slug}).jobs;
if ( companyJobs !== undefined) {
return Meteor.subscribe('Jobs', {'_id': { '$in': companyJobs }});
}
return false
} else if (Router.current().params.slug === undefined && remoteQuery === true ) {
return Job.find({ $or: [ { Name: regex }, { Description: regex }, ] , Remote: true, positionType: [],});
} else if (typeQuery = '') {
return Job.find({ $or: [ { Name: regex }, { Description: regex }, ] , positionType: typeQuery, });
},
// -------*****************************
employer: () => {
if (Router.current().params.slug === undefined) {
Meteor.subscribe('Companies');
return 'Poslodavac: ' + Company.findOne({_id: Template.currentData().CompanyId}).Name;
}
return false
},
jobUrl: () => {
Meteor.subscribe('Companies');
companySlug = Company.findOne({_id: Template.currentData().CompanyId}).slug;
return ('/company/' + companySlug + '/job/' );
}
});
Template.jobs.events({
'click .positionType': (event, templateInstance) => {
if (Template.instance().remoteQuery.get().lenght > 1){
Template.instance().typeQuery.set(Template.instance().remoteQuery.get().push(event.target.value));
console.log(Template.instance().remoteQuery.get())
} else {
console.log(Template.instance().remoteQuery.get())
console.log('ggggggg')
Template.instance().typeQuery.set(event.target.value);
}
},
'click #remoteFriendly': (event, templateInstance) => {
Template.instance().remoteQuery.set(!Template.instance().remoteQuery.get());
},
});
Html tempalte with filters:
<template name="jobs" >
<div>
<p>Filteri:</p>
<span>
<input type="checkbox" id="remoteFriendly" name="remote"> <span for="remoteFriendly"> Remote friendly? </span>
</span>
<span>
<p>Tip pozicije:</p>
<input type="checkbox" class="positionType" id="1" value="Programiranje" > <span for="1"> Programiranje </span>
<input type="checkbox" class="positionType" id="2" value="Dizajn" > <span for="2"> Dizajn </span>
<input type="checkbox" class="positionType" id="3" value="Marketing" > <span for="3"> Marketing </span>
<input type="checkbox" class="positionType" id="4" value="Ostalo" > <span for="4"> Ostalo </span>
</span>
</div>
{{#each job}}
<div style="border: 0.1rem solid black; margin: 1cm; padding: 5px; max-width: 420px;" > <!-- OVO JE PRIVREMENI STIL, OBRISATI-->
<p> Posao: {{Name}} <br> Opis: {{Description}}</p>
<p> {{employer}} </p>
<p>Remote friendly?: {{Remote}}</p>
<p>Tip pozicije: {{positionType}}</p>
<p> Saznajte vise OVDE</p>
</div>
{{/each}}
<p id="nesto"></p>
</template>
Welcome to SO!
You seem to be confused between Pub/Sub and Collection.find.
You should first realize that the 2 are different mechanisms, which provide different functionalities.
Pub/Sub indeed sends data from your Server into your Client's Minimongo database. But this data is not displayed yet.
Collection.find is used on your Server against your actual MongoDB, and on your Client against your local Minimongo DB.
Therefore on your client, once you have correctly subscribed to your server publication (typically at app level or template level / in onCreated hook), you can directly call Jobs.find in your helpers (or anywhere else) to get your documents, without having to change the subscription (unless the latter needs new parameters).
There should be nothing wrong with your commented code:
return Job.find({'_id': { '$in': companyJobs }});
In general, avoid any expensive computation in helpers (like Meteor.subscribe), as helpers may be executed many times without you noticing it. Your Meteor.subscribe('Companies') should also go to template level (i.e. in onCreated hook).
Therefore, instead of doing your if / else conditions in your helper, simply do it once at your template level. To account for your need to use a value from another document in another collection, why not just passing directly the company's slug as an argument to your Jobs subscription, and performing the computation Server-side? Or even just subscribing to everything, as your current initial subscription seems to do.
Then your helper will just use Jobs.find, which queries against your Client's local minimongo DB, leaving your Server unbothered.
Adding to a FormArray via input field
To add values, via a form input, to an existing array I can use (click)="addAddress()" in the html where addAddress is defined in the component.ts to update values in an array in the form AppComponent:
ngOnInit() {
this.myForm = this._fb.group({
name: ['', [Validators.required, Validators.minLength(5)]],
addresses: this._fb.array([
this.initAddress(),
])
});
}
initAddress() {
return this._fb.group({
street: ['', Validators.required],
postcode: ['']
});
}
addAddress() {
const control = <FormArray>this.myForm.controls['addresses'];
control.push(this.initAddress());
}
And back in the html ngFor is used to add a set of input fields each time the 'add' button is clicked":
<div formArrayName="addresses">
<div *ngFor="let address of myForm.controls.addresses.controls; let i=index" >
<span>Address {{i + 1}}</span>
<div [formGroupName]="i">
<input type="text" formControlName="street">
<input type="text" formControlName="postcode">
</div>
</div>
</div>
Like the full working example here: https://embed.plnkr.co/sUjE1ULYhfDHLNBw2sRv/1
Adding to form FormGroup via input field
I would like to understand how to add a completely new FormGroup via form input.
So taking the case of the example above...
Rather than adding to an array of addresses:
{
"name": "",
"addresses": [
{
"street": "Baker Street",
"postcode": "w2"
},
{
"street": "Bond Street",
"postcode": "w1"
}
]
}
Each time an address is added a new FormGroup is created where the user adds the FormGroupName for each via form input. For example:
{
"name":"",
"home":{
"street":"Baker Street",
"postcode":"w2"
},
"work":{
"street":"Bond Street",
"postcode":"w1"
}
}
Using the addControl method this can be achieved like so:
app.component.html excerpt:
<div class="margin-20">
<a (click)="addGroup(newName.value)" style="cursor: default">Add Group +</a>
</div>
app.component.ts excerpt:
ngOnInit() {
this.myForm = this._fb.group({
});
}
addGroup(newName:string) {
let data = this._fb.group({
foo: ['what a load of foo'],
bar: ['see you at the bar']
})
this.myForm.addControl(newName, data);
document.getElementById('newName').value='';
}
Working example in this plunk:
For an example where a corresponding input field is published for each formControl that is added in the new named group I created this plunk
I am stuck here and would very much appreciate help. I have a form in a razor view with a input field for current city which looks like this:
#Html.LabelFor(x => x.UserModel.CurrentCity)
#Html.TextBoxFor(x => x.UserModel.CurrentCity, new { #data_bind = "value: UserModel.CurrentCity ", #class = "city", #data_val = "true", #data_val_required="City is required" })
#Html.ValidationMessageFor(x => x.UserModel.CurrentCity)
I want autocomplete for this field and am using jquery token input plugin for this like:
$(".city").tokenInput('#Url.Action("AutocompleteCity", "Settings")',{ minChars: 2, tokenLimit: 1, hintText: "Type in a city" });
$(".city").tokenInput("add", {name: viewModel.UserModel.CurrentCity()});
Everything works fine except the clientside unobtrusive validation. The form gets posted even if CurrentCity is empty.
I also tried to change the MVC helpers to plain html:
<input data-val="true" data-val-required="City is required" type="text" class="city" data-bind = "value: UserModel.CurrentCity, attr: { name: 'UserModel.CurrentCity', id: 'UserModel.CurrentCity'}" />
<span class="field-validation-valid" data-valmsg-for="UserModel.CurrentCity" data-valmsg-replace="true"></span>
This approach prevents the form from being submitted but the validation-error class is not injected into the span and the error message does not show up.
Any suggestions?
The original input element you created is hidden. You will likely need to enable validation of hidden elements: jquery.validate v. 1.9 ignores some hidden inputs or https://stackoverflow.com/a/13295938/173225.
I am having problems binding the selected value of a selectbox to a property within the view model. For some reason it keeps coming back unchanged when posted back to the server.
My Html is:
<form action="/Task/Create" data-bind="submit: save">
<table border="1">
<tr>
<td>ref type</td>
<td><select data-bind="options: ReferenceTypes, optionsText: 'Name', optionsCaption: 'Select...', value:Task.ReferenceTypeId"></select></td>
<td>Reference</td>
<td><input data-bind="value:Task.Reference" /></td>
</tr>
</table>
<button type="submit">Save Listings</button>
</form>
The Javascript is:
<script type="text/javascript">
var viewModel = {};
$.getJSON('/Task/CreateJson', function (result) {
viewModel = ko.mapping.fromJS(result.Data);
viewModel.save = function () {
var data = ko.toJSON(this);
$.ajax({
url: '/Task/Create',
contentType: 'application/json',
type: "POST",
data: data,
dataType: 'json',
success: function (result) {
ko.mapping.updateFromJS(viewModel, result);
}
});
}
ko.applyBindings(viewModel);
});
</script>
JSON from Fiddler that gets loaded into the page as below.
{
"ContentEncoding":null,
"ContentType":null,
"Data":{
"Task":{
"ReferenceTypeId":0,
"Reference":"Default Value"
},
"ReferenceTypes":[
{
"Id":2,
"Name":"A Ref Type"
},
{
"Id":3,
"Name":"B Ref Type"
},
{
"Id":1,
"Name":"C Ref Type"
}
]
},
"JsonRequestBehavior":1
}
This comes back into the server (ASP.NET MVC3) correctly, with the updated Reference string value, but ReferenceTypeId is not bound to the correctly selected drop down value. Do I need to perform any additional functions to bind correctly etc? Or tell the data-bind what the select value column is (Id) etc? I have checked in Fiddler on the values getting posted back from the browser, and it has the same original value (0). So it is definately not the server.
I hope someone can help, if you need any further information please ask.
Kind Regards
Phil
The issue is that your options binding will try to assign the object that it is bound to, to the value observable specified.
For example if you select "A Ref Type" the options binding will push the json object
{ "Id":2, "Name":"A Ref Type" }
Into your Task.ReferenceTypeId observable which will then be serialized back to your server. In this case you need to add an optionsValue config options to tell the binding just to save the id.
<select data-bind="options: ReferenceTypes, optionsText: 'Name',
optionsCaption: 'Select...', optionsValue: 'Id', value:Task.ReferenceTypeId">
</select>
Here's an example.
http://jsfiddle.net/madcapnmckay/Ba5gx/
Hope this helps.