Assuming that i have the following data in my params
params:[input:[1, 2, 3]]
And i have the following form in my Grails app
<div class="block1">
<label class="control-label">
<g:message code="input.label" default="Input"/>
</label>
<div class="controls">
<g:textField id="input1" name="input" value="${input}" readonly="${actionName != 'show' ? false : true}"/>
</div>
</div>
<div class="block2">
<label class="control-label">
<g:message code="input.label" default="Input"/>
</label>
<div class="controls">
<g:textField id="input2" name="input" value="${input}" readonly="${actionName != 'show' ? false : true}"/>
</div>
</div>
<div class="block3">
<label class="control-label">
<g:message code="input.label" default="Input"/>
</label>
<div class="controls">
<g:textField id="input3" name="input" value="${input}" readonly="${actionName != 'show' ? false : true}"/>
</div>
</div>
The form design above is correct, because in my form design, there will be several inputs of the same name (but each will be saved to the database under different primary keys) and it can be increases and decreases according to user selection.
Few questions using the above
How do i make it so that the value for input1 is params.input[0], input2 is params.input[1] and input3 is params.input[2] in the view? I can pass the model from controller without problem, but i couldn't distribute the value properly to each input on the form.
Is there any way to change the value ${input} dynamically? As in if i want to change the value to ${input[0]} or ${input[1]}
Can i automatically set the amount of block appended into the form using the g:each tag? Say like if from controller i want to set the rendering block amount to 3, so can i use the g:each tag to render the block 3 times in the form?
Thanks
The links are examples of how to use ajax/jquery to get values from a remote call and replace html element (divId) within a page - this divId could be the entire
<input type="text" name="input" value="newvalue"/>
upon triggering some form of call as above to get the new value.. in regards to
g:textField
yes it works like all other grails tags in the end they are transformed back to the correct HTML terminology...
The actual variable value is dynamic if you defined
<input name="existingvariable" value="${something}" ...
where something was a parameter from the given controller - and then you updated the call so
://YOURHOST:8080/yourapp/controller?existingvariable=newvalue
and refreshed or clicked this link which is what ajax would be doing for you doing a new call to either another controller to generate new values or same and passing new value to it and then grabbing data and pushing it back onto the divId ... (all in the background)
Groovy loading into divs
Grails - Select menu not rendering
I want my selects dropdowns to auto populate with Ajax in Grails website
The above are all related to using ajax to populate / update existing form elements
If you wish to update a live form with a new live value (non existant in DB) take a look at modaldynamix plugin. //github.com/vahidhedayati/modaldynamix
Related
I want to build some dynamic form fields.
When I put an *ngIf in fron of the div the material design does not work properly (no effects etc.).
Here is the input field that works
<div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
<input class="mdl-textfield__input" type="number" id="playerCount" [(ngModel)]="playerCount" (ngModelChange)="setPlayerCount(playerCount)">
<label class="mdl-textfield__label" for="playerCount">Anzahl Spieler</label>
</div>
and the one that does not work
<div *ngIf="players" class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
<input class="mdl-textfield__input" type="text" id="stuff">
<label class="mdl-textfield__label" for="stuff">stuff</label>
</div>
The second div should appear as soon as the first has been filled out.
You have to register new elements to MDL's componentHandler since *ngIf actually removes the element from the dom, you have to register that element every time Angular removes/inserts it.
You can either call componentHandler.upgradeAllRegistered(); every time *ngIf inserts the element or replace *ngIf with something that is just hides the element but not remove it.
I have scenario where I am changing the input text, i have multiple forms and one input within each form so i want to get the current form name whose input i am changing. how to do this in angular 2??
Below is my code for child component
<form #form1="NgForm" novalidate>
<input id="phoneNumber" type="text" placeholder="phoneNumber" class="validate"/>
</form>
<form #form2="NgForm" novalidate>
<input id="mobileNumber" type="text" placeholder="mobileNumber" class="validate"/>
</form>
Now suppose i am adding mobile number i want its form name. How to do this angular 2?? This is i want to access in parent component I am accessing the child component form using #ViewChildren and i am able to access the form manually but i want access dynamically with respect to the input i am accessing ..
In Angular you have two choices use dynamic forms or template driven forms,
your choice is dynamic forms using #form1="NgForm"
Angular dynamic-form
In your code you forgot the '[formControlName]' directive on the inputs, when you have those you can access the form from your component code like:
Component:
this.form1.valueChanges.subscribe(data => console.log('Form changes', data));
HTML:
<form #form2="NgForm" novalidate>
<input [formControlName]="mobileNumber" type="text" placeholder="mobileNumber" class="validate"/>
</form>
I am able to get the current form valid invalid in parent form by passing index as input to child form and emitting the same in parent form...
I want to create twitter bootstrap compliant form. According to the docs for Twitter Bootstrap v2.2.2 (the version included with web2py) the html should look like:
<form class="form-horizontal">
<div class="control-group">
<label class="control-label" for="inputEmail">Email</label>
<div class="controls">
<input type="text" id="inputEmail" placeholder="Email">
</div>
</div>
...
I'm currently using SQLFORM which outputs html that doesn't really fit with this (even using formstyle='divs'). Besides I want my html output to be clean without web2py artifacts such as class="w2p_fl". So my thought is to use a custom form. However in doing this there would be a lot of repeated code. That is, the following would basically need to be repeated for each field.
{{=form.custom.begin}}
<div class="control-group">
{{=LABEL(form.custom.label['myfield'], _class='control-label',
_for='mytable_myfield')}}
<div class="controls">{{=form.custom.widget.myfield}}</div>
</div>
...
{{=form.custom.end}}
So how can I repeat the above unit of code so I could replace it with something like {{=bootstrap_field(db.mytable.myfield)}} or some other way to adhere to DRY?
What is the web2py way to do this? Create a view function? Pass a function in the dictionary returned by the controller? Create my own html helper? Create my own widget? Another way?
If you're using Bootstrap 2, you can just do:
form = SQLFORM(..., formstyle='bootstrap')
For Bootstrap 3 (or any other custom formstyle you'd like to create), the formstyle argument can be a function (or other callable) that produces the form DOM. The function will be passed the form and a fields object, which is a list of tuples, with each tuple containing a CSS id, label, input element, and (possibly empty) comment/help text. To get an idea of what such a function should look like, check out the one used for Bootstrap 2 forms.
I have this situation in which I show 1 form in two steps. So to proceed to the second part of the form you have to click on a button. But before moving on I would like to perform form validation (all required fields need to be filled in). But because this is a normal button, the whole submit magic is not triggered and the validation does not happen. So the question I'm interested in is how can I trigger form validation in my controller ? It would even be better to trigger validation for specific fields. Just to give an idea, the form looks like
<form name="form" submit="save()">
<section id="step1">
<label for="username" required>Username</label>
<input type="text" name="username" ng-model="user.username" required />
.....
<button ng-click="proceed()">Proceed</button>
</section>
<section id="step2">
<label ...></label>
<input...>
....
<button type="submit">Save</button>
</section>
</form>
Also, I don't want to opt for disabling the button until all required fields are valid.
Take a look at the ng-form directive. It allows nesting forms (actually not HTML <form>s, but Angular NgFormControllers). So you can split your one form, used for posting to the server, into two logical forms, used for independent validation:
<form submit="save()">
<div ng-form="form1">
...controls...
<button ng-click="proceed()"
ng-disabled="form1.$invalid">Proceed</button>
</div>
<div ng-form="form2">
...controls...
<button type="submit"
ng-disabled="form2.$invalid || form1.$invalid">Submit</button>
</div>
</form>
You can access the $valid property from your controller. Something like this could work.
$scope.proceed = function(){
if($scope.form.username.$valid){
//username is valid we may proceed to the next step
}
};
<button ng-click="proceed()">Proceed</button>
Replace To :
<button ng-click="proceed()" ng-disabled="form.$invalid">Proceed</button>
Button will not visible button until all required fields are valid.
DEMO
I have an album view where a user can check which photos to delete. I am currently doing this:
<g:form action="delete">
<g:each in="${pictures}">
<div id="images2">
<img id="images2" src="${it.urlThumb}" alt="no Picture"/><br>
<g:checkBox name="myCheckbox"/>
</div>
</g:each>
<g:submitButton name="Submit"/>
</g:form>
The problem is this creates the form dynamically so each of the names are the same for the check boxes. I ideally want a collection returned to the controller that has each of the checked images.
Any ideas?
In the <g:checkBox> you need to specify a value. Each checkbox will be created with the same name but a different value. When the form is submitted with different checkboxes checked, you will get a list in the controller.
View:
<g:each in="${pictures}">
<div id="images2">
<img id="images2" src="${it.urlThumb}" alt="no Picture"/><br>
<g:checkBox name="myCheckbox" value="it.id"/>
</div>
</g:each>
Controller:
def checked = params.list('myCheckbox')