Creating a dynamic template with Polymer 1.0 using automatic data binding and integrating iron-ajax technology

Question

Creating a dynamic template with Polymer 1.0 using automatic data binding and integrating iron-ajax technology

Attempting to utilize iron-ajax for service request in index.html:

<body class="fullbleed">
    <template is="dom-bind" id="mainTemplate">
        <paper-material class="todo" elevation="1">
            <span>Mohammed</span>
        </paper-material>
        <br/>
        <iron-ajax id="requestGeoname" auto url="http://api.geonames.org/findNearbyPlaceNameJSON" params='{{input}}' handle-as="json" last-response="{{data}}"></iron-ajax>
        <span>{{data.geonames.0.countryName}}</span>
        <br/>
        <span>{{data.geonames.0.name}}</span>
    </template>
    <p id="geolocation">Finding geolocation...</p>
</body>

In the JS code, attempting to access {{data}}, but encountering issues. Attempted the following:

<script type="text/javascript" charset="utf-8">
...
console.log(document.querySelector('#requestGeoname').data);
...
</script>

Logging {{data}} results in undefined.

ajax data-binding polymer-1.0

Answer 1

Answer №1

Here is a solution that should do the trick:

<script type="text/javascript" charset="utf-8>
...
var template = Polymer.dom(this).querySelector('template[is=dom-bind]');
console.log(template.data);
...
</script>

As mentioned by Dogs, the data property isn't associated with the requestGeoname-element, but rather with the "template" element that is bound with dom-bind. While Dogs' solution may work, it would be more practical to utilize this approach if you have multiple variables in your application as they can now be accessed through the template-object. For instance:

...
template.myOthervariable = "derpherp";
...

Answer 2

Here is a solution that should do the trick:

<script type="text/javascript" charset="utf-8>
...
var template = Polymer.dom(this).querySelector('template[is=dom-bind]');
console.log(template.data);
...
</script>

As mentioned by Dogs, the data property isn't associated with the requestGeoname-element, but rather with the "template" element that is bound with dom-bind. While Dogs' solution may work, it would be more practical to utilize this approach if you have multiple variables in your application as they can now be accessed through the template-object. For instance:

...
template.myOthervariable = "derpherp";
...

Answer 3

Answer №2

It is important to wait until the request has completed before taking any further action. It is recommended to utilize the response event for better handling of responses (For more information, visit: ).

<script>
document.getElementById('requestGeoname').addEventListener('response', function(event){
    console.log(event.detail.response)
});
</script>

Alternatively, you can opt for a declarative approach:

<script>
var mainTemplate = document.getElementById('mainTemplate');
mainTemplate.onPlacesResponse = function(event){
    console.log(event.detail.response);
};
</script>

<iron-ajax … on-response="onPlacesResponse"

Answer 4

It is important to wait until the request has completed before taking any further action. It is recommended to utilize the response event for better handling of responses (For more information, visit: ).

<script>
document.getElementById('requestGeoname').addEventListener('response', function(event){
    console.log(event.detail.response)
});
</script>

Alternatively, you can opt for a declarative approach:

<script>
var mainTemplate = document.getElementById('mainTemplate');
mainTemplate.onPlacesResponse = function(event){
    console.log(event.detail.response);
};
</script>

<iron-ajax … on-response="onPlacesResponse"

Creating a dynamic template with Polymer 1.0 using automatic data binding and integrating iron-ajax technology

Answer №1

Answer №2

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