Forum | Appery.io

Hi,

Am trying to optimize our application a bit from the perspective of minimizing
REST calls. As an example, we have a login page, where upon the user clicking
on the "Login" button we make a REST call to authenticate. If the REST service
succeeds, we transition to another page ("Home" page) and make another REST call (returns a list of stuff) to populate this page (display a list of stuff).

What we would like to do is eliminate one REST call in the above use case, where our initial authenticate REST call would be modified to return a "list of stuff" that could be used to populate the "Home" page. How could we achieve this? Initial thoughts would be have pseudo-code like this:

Custom JavaScript for Login Button Click Event

Login.execute({});
if (successful) {
store the "list of stuff" json in local storage
transition to "Home" Page
} else {
alert('unable to authenticate');
}

Custom JavaScript for "Home" Page "Load" Event

retreive "the list of stuff" json from local storage (see above Custom JavaScript)
call some tiggzi internal so that we do not make a REST call, but are able to re-use the "Data Mapping" that is defined for the call we do not make anymore

I guess the big question is, is there away to utilize the "Data Mapping" feature that Tiggzi provides but decouple it from a REST call and as a replacement provide the "Data Mapping" feature a json object/list that is in local storage?

If the above pseudo-code is possible, what would the proper API calls be?

Al

Just to make sure I understand the question. You would like to invoke the mapping but from local storage to page (instead of service to local storage), correct?

Correct

You can do it with Generic Service. Here is an example:

code
$t.myimpl = $t.createClass(null, {

init: function(requestOptions) {
this.__requestOptions = $.extend({}, requestOptions);
},

process: function(settings) {
if (this.requestOptions.echo) {
settings.success(this.requestOptions.echo);
} else {
console.log('Default implementation is used. Please define your own.');

// save JSON data to local storage, this would be your original service call
localStorage.setItem("cacheddata", JSON.stringify({
'name': 'joe'
}));

// load JSON data from local storage
var cdata = localStorage.getItem("cacheddata");

// pass the JSON to the service, for output mapping
settings.success(JSON.parse(cdata));
}
settings.complete('success');
}

});
/code

You would define the service output that matches the JSON you returns. Let me know if this helps.