How to Disable md-button

Question

I have a form(HTML) and a directive to do stuff when submit button is clicked.The form has 10 input fields. The requirement is to keep the submit button which is a disabled till the time user enters value in at least one field.

Can anyone please help me. Iam new to angular and could not find much help.

Solution 1

simply use ng-disabled="true".

declare a function in your controller something like

checkInputFields which return either true or false depending on the form modal.

then use

<md-button ng-disabled="checInputFields()">
  Submit
</md-button>

Solution 2

  <form ng-submit="search()" name="searchSideNav">
    <div layout="column" layout-align="center">
      <md-input-container flex>
        <label>{{::labels.documentName}}</label>
        <input ng-model="searchItems.sDocumentName" ng-required="" name="sDocumentName">
        <div ng-show="searchSideNav.sDocumentName.$invalid && !searchSideNav.sDocumentName.$pristine">
          <p ng-show="searchSideNav.sDocumentName.$error.required" class="help-block">Document is required</p>
        </div>
      </md-input-container>
       <md-button ng-disabled="searchSideNav.$invalid">
         Submit
      </md-button>
    </div>
  </form>

Comments

[Albert Pinto]

i dont have a controller but the form is sitting in a directive. i tried your suggestion by putting a method in the directive but the directive has to know when a value is entered.

[Albert Pinto]

tried that but is not working for some reason my form is not invalid

[Mohan Singh]

Please make sure all fields of form should have name attribute. Can you please post your form html here

[atinder]

use bindToController in your directive and declare your method on the the controller of directive.

[Albert Pinto]

<form ng-submit="search()" name="SearchSideNav"> <div layout="column" layout-align="center"> <md-input-container flex> <label>{{::labels.documentName}}</label> <input ng-model="searchItems.sDocumentName" ng-required="requireAtleastOneInput()"> </md-input-container> <location-select label="{{::labels.location}}" location="selectedLocation"></location-select> <br/>

[Albert Pinto]

its just a portion of the html

[Mohan Singh]

@AlbertPinto I have updated my answer. Please focus on validation and form field's attribute. Validation does work only when you have added name attribute. Now it should work. Please check. Else i can create the plunker for you