I having trouble populating a gridx widget from a JsonRest store. See my code below...
test1.json contains the same info as i have specified in the data for teststore.
When i change the grid to point at the teststore var it displays the contents correctly but when i point it at the reststore variable i get a 'No items to display' message.
Anyone know what im missing?
var restStore = new dojo.store.JsonRest({target:"http://localhost:9081/MyProj/test1.json"});
var teststore = new Store({
data: [
{id: "1", "description":"First Description"},
{id: "2", "description":"Second Description"},
{id: "3", "description":"Third Description"},
{id: "4", "description":"Fourth Description"}
]
});
grid = new Grid({
cacheClass: Cache,
store: restStore,
structure: [
{id: "description", field: 'description', width: '100%'}
]
});
grid.startup();
gridx and dojox.grid.DataGrid are not the same thing. dojox.grid.DataGrid is deprecated and only works with legacy dojo/data stores. You may use dojo/data/ObjectStore to wrap a dojo/store store with the dojo/data API:
var teststore = new ObjectStore({ objectStore: new Store({ … }) });
However, if you are starting a new project, you should use dgrid instead, which works natively with dojo/store stores.
Related
Looking at the example code
var accounts = new Backbone.Collection;
accounts.url = '/accounts';
accounts.fetch();
this works if the route returns an array
[{id:1, name:'bob'}, {id:2, name:'joe'}]
but the REST service I'm using returns an object like this
{
items: [{id:1, name:'bob'}, {id:2, name:'joe'}],
page: 1,
href: '/acounts'
}
How to I go about telling Backbone.Collection that the collection is in items?
Parse function seems appropriate.
From the documentation:
http://backbonejs.org/
"When fetching raw JSON data from an API, a Collection will automatically populate itself with data formatted as an array, while a Model will automatically populate itself with data formatted as an object:
[{"id": 1}] ..... populates a Collection with one model.
{"id": 1} ....... populates a Model with one attribute.
However, it's fairly common to encounter APIs that return data in a different format than what Backbone expects. For example, consider fetching a Collection from an API that returns the real data array wrapped in metadata:
{
"page": 1,
"limit": 10,
"total": 2,
"books": [
{"id": 1, "title": "Pride and Prejudice"},
{"id": 4, "title": "The Great Gatsby"}
]
}
In the above example data, a Collection should populate using the "books" array rather than the root object structure. This difference is easily reconciled using a parse method that returns (or transforms) the desired portion of API data:
var Books = Backbone.Collection.extend({
url: '/books',
parse: function(data) {
return data.books;
}
});
"
Hope it helps.
I am having some difficulty figuring out how to make it all work together. Here is what I would like to do:
The model is fetched using $resource from the rest API:
var itemResource = $resource('http://blabla.com/items/:id');
$scope.item = itemResource.get({id: '12345'});
The returned item has some fields among which is one array field that lists the ids of the categories:
{
"item_name: "some value",
"categories": ["cat_id1", "cat_id7", "cat_id8"]
}
In the UI I want these categories to be shown as editable multi select. The user should not operate using ids, but rather he should see and be able to chose string representations which come from the mapping within the application. So in html:
<input type"text" ui-select2="categoryOptions" ng-model="item.categories" />
and also in controller:
var categoryMapping = [
{id: "cat_id1", text: "CategoryAlpha"},
...
{id: "cat_id8", text: "CategoryOmega"},
...
];
$scope.categoryOptions = {
'multiple': true,
'placeholder': 'Chose categories',
'width': 'element',
'data': categoryMapping,
};
Obviously the pieces of code above are not working and I don't know how to make them work to do what I want. ui-select2 wants the model (item.categories) to be an array of objects {id, text} and I want it to store only the ids in the items in the database and have the mapping separate. I can't be the first one to do it, there must be a solution, please help.
Thanks
I am using angularstrap typeahead directive. Its working fine with single object json values but its not working when replacing the json with my json object array.
Demo Json:
typeahead= ["Alabama","Alaska","Arizona","Arkansas","California","Colorado","Connecticut","Delaware","Florida","Georgia"];
<input type="text" ng-model="typeaheadValue" bs-typeahead="typeahead">
The above code is working fine.
My JSON object array:
typeahead = [
{id: 1, name: 'name1', email: 'email1#domain.com'},
{id: 2, name: 'name2', email: 'email2#domain.com'},
{id: 3, name: 'name3', email: 'email3#domain.com'}
];
$scope.typeaheadFn = function(query) {
return $.map($scope.typeahead, function(contacts) {
return contacts;
});
}
<input type="text" ng-model="typeaheadValue" bs-typeahead="typeaheadFn">
Please give me some solution for this.
You want to map your items to a list of strings, I believe.
Try:
$scope.typeaheadFn = function(query) {
return $.map($scope.typeahead, function(contact) {
return contact.name;
});
}
(I should add that I am currently stumped by something similar)
If you have, for example:
items = [
{id: 1, name: 'name1', email: 'email1#domain.com'},
{id: 2, name: 'name2', email: 'email2#domain.com'},
{id: 3, name: 'name3', email: 'email3#domain.com'}
];
You will need:
<input type="text" bs-typeahead ng-model="selectedItem" ng-options="item.name for item in items|orederBy:'name'|filter:{name:$viewValue}:optionalCompareFn"></input>
If you exclude filter from ng-options matching will be done on every property of item object, so if you want it to be done on one property add filter:{propName:$viewValue}. Also, if you exclude optionalCompareFn, default comparison from angular will be applied, but you can add your custom one (on your $scope), with signature (actual is property value of the item, stated in filter, not the whole object).
optionalCompareFn(expected,actual){ return /compare and return true or false/}
Attempt 1
I finally got this semi-working after a huge amount of frustration.
An easy way to get your desired text appearing is for each item to have a toString method.
You might have something like
typeaheadData = [
{id: 1, text: "abc", toString: function() { return "abc"; }},
{id: 2, text: "def", toString: function() { return "def"; }}
]
Then you will see the correct text in the options that popup, but the matching won't yet work properly (the items shown by the widget won't match the text the user enters in the box).
To get this working I used the new filter option that's been added in the current git version of angular-strap. Note that it's not even in the pre-built dist/angular-strap.js file in the repository, you will need to rebuild this file yourself to get the new feature. (As of commit ce4bb9de6e53cda77529bec24b76441aeaebcae6).
If your bs-typeahead widget looks like this:
<input bs-typeahead ng-options="item for item in items" filter="myFilter" ng-model="myModel" />
Then the filter myFilter is called whenever the user enters a key. It's called with two arguments, the first being the entire list you passed to the typeahead, and the second being the text entered. You can then loop over the list and return the items you want, probably by checking whether the text matches one or more of the properties of an item. So you might define the filter like this:
var myApp = angular.module('myApp', ['mgcrea.ngStrap'])
.filter('myFilter', function() {
return function(items, text) {
var a = [];
angular.forEach(items, function(item) {
// Match an item if the entered text matches its `text` property.
if (item.label.indexOf(text) >= 0) {
a.push(item);
}
});
return a;
};
});
Unfortunately this still isn't quite right; if you select an item by clicking on it, then the text parameter will be the actual object from the items list, not the text.
Attempt 2
I still found this too annoying so I made a fork of angular-strap (https://github.com/amagee/angular-strap) which lets you do this:
typeaheadData = [
{id: 1, text: "abc"},
{id: 2, text: "def"}
]
//...
$scope.myFormatter = function(id) {
if (id == null) { return; }
typeaheadData.forEach(function(d) {
if (d.id === id) {
return d.text;
}
});
};
<input bs-typeahead ng-options="item for item in items" ng-model="myModel"
key-field="id" text-field="text" formatter="myFormatter" />
With no need to fuss around with toString methods or filters. The text-field is what the user sees, and the key-field is what is written to the model.
(Nope! Still doesn't work if you update the model without going through the view).
The formatter option is needed so when you set the model value to just the key field, the widget can figure out the right text to display.
I'm trying to bring data from an internal table in a ABAP program into an SAPUI5 application.
From the ABAP side, I have converted the required data into JSON format and sending it across like it is mentioned in the a guide.
I have written the following code in the 'Read' section of the controller
$.ajax({
type: 'GET',
url: 'http://socw3s1er67.solutions.glbsnet.com:8000/sap/bc/Z_tets_json?sap-client=950',
success: function(data) {
alert(data[1].PROJECT);
alert(data[0].MANDT);
var oModel_Projects = new sap.ui.model.json.JSONModel();
oModel_Projects.setData({ modelData: data });
}
});
Sample JSON response from the server:
[
{
"MANDT": "PJ1",
"PROJECT": "Test Project1",
"DESCRIPTION": ""
},
{
"MANDT": "PJ2",
"PROJECT": "Test Project2",
"DESCRIPTION": ""
}
]
The alerts seem to be working fine and are returning expected data from the internal tables.
I want to know: how to bind this data into a particular table using models?
Well, your code looks ok, but there are other parts, which are missing, and there might be a problem there...
How is your table constructed - ?
It should be:
var table = new sap.ui.table.DataTable({
title: 'My first table',
width: '100%'
});
Do you make following calls to connect table and model?
table.setModel(oModel_Projects);
table.bindRows("modelData");
Are you properly creating columns of the table?
label = new sap.ui.commons.Label({ text: 'Client' });
template = new sap.ui.commons.TextView({ text: '{MANDT}' });
col = new sap.ui.table.Column({ label: label, template: template });
table.addColumn(col);
Is table properly placed into HTML using placeAt method?
Updated the answer after your clarification:
Try this parser:
var html = "<table><tr><td>MANDT</td><td>PROJECT</td><td>DESCRIPTION</td></tr>";
for(var index in data){
html+="<tr><td>"+data[index].MANDT+"</td><td>"+data[index].PROJECT+" </td><td>"+data[index].DESCRIPTION+"</td></tr>";
}
html+="</table>";
//now you can insert this html into some div like as follows: $("#div1").html(html);
Or google for some jquery gridview as I suggested in the comment.
I have a Dojo EnhancedGrid which uses a data store filled with the following data structure:
[
{ id: 1, desc: "Obj Desc", options: [ { txt: "text", value: 0 }, { obj2 }, { objn } ] },
{ id: 2, ... },
{ id: 3, ... },
{ id: n, ... }
]
Currently I'm doing all this with an auxiliary store...but I believe this is far from a good approach to the problem, it's too ugly and doesn't work really well with edition (because I have to send changes from one store to another).
Instead of displaying all this objects at the same time, I wanted to select just one object (using its id) and display its options objects on grid. At the same time, the changes on grid should make effect on store, to be able to save them later.
Is it possible to query the grid's store, in order to display just one object? How?
And is it possible to fill the grid with objects list present on "options" attribute?