Is there a way to dynamically render different templates for an angular 1.5 component

问题

I have a number of angular 1.5 components that all take the same attributes and data structure. I think they could be re-factored into a single component, but I need a way to dynamically choose a template based upon the interpolated value of the type attribute.

var myComponentDef = {
    bindings: {
        type: '<'
    },
    templateUrl: // This should be dynamic based on interpolated type value
};

angular.module('myModule').component('myComponent', myComponentDef);

I can't use the templateUrl function($element, $attrs) {} because the values in the $attrs are uninterpolated so I wouldn't get the type specified in the passed in data.

I could just have one big template with a series of ng-if or ng-switch directives, but I would like to keep the templates separate.

Alternatively, I could just keep the components separate and use ng-switch etc in the parent component, but I don't like this as it seems like a lot of repetition.

I'm looking for a solution where I can use the interpolated type passed into the bindings to match a template url for each type which will then be used to build the component.

Is this possible?

Thanks

回答1:

This is not something that components were specially made for. The task narrows down to using a directive with dynamic templates. The existing one is ng-include.

To use it within a component, it should be:

var myComponentDef = {
  bindings: {
    type: '<'
  },
  template: '<div ng-include="$ctrl.templateUrl">',
  controller: function () {
    this.$onChanges = (changes) => {
      if (changes.type && this.type) {
        this.templateUrl = this.type + '.html';
      }
    }
  }
}

回答2:

You can inject any service and set dynamic url

angular.module('myApp').component("dynamicTempate", {
        controller: yourController,
        templateUrl: ['$routeParams', function (routeParams) {
           
            return 'app/' + routeParams["yourParam"] + ".html";
        
        }],
        bindings: {
        },
        require: {
        }
    });

回答3:

You have to have the switching logic somewhere in any case so why not simply have it in a parent component template?

Having clean and understandable AngularJS template in that case is IMO more valuable than a bit of repetition:

<ng-container ng-switch="$ctrl.myComponentDef.type">
  <component-type1 ng-switch-when="type1" param="$ctrl.myComponentDef"></component-type1>
  <component-type2 ng-switch-when="type2" param="$ctrl.myComponentDef"></component-type2>
</ng-container>

Even if you change the myComponentDef.type on the fly, the components in the switch will correctly call their respective $onDestroy and $onInit methods and load data as expected - no magic, no voodoo.

来源：https://stackoverflow.com/questions/38647207/is-there-a-way-to-dynamically-render-different-templates-for-an-angular-1-5-comp

标签

angularjs

angular-components