I have a data source, which gets built from a JSON data string, containing a field called Fruit:
[{
... /other entries
fruit: [{
name: 1
}, {
name: 2
}, {
name: 3
}]
}]
I'm using this field in a KGrid, and would like to do a comma seperated list of links, from the names:
1, 2, 3
Currently, I'm hooking into the dataBound function, and build this up individually for the fruit field, is there an easier way to do this with, let's say, a template? I tried to look up information about something similar in the docs, but couldn't find anything pertaining to splitting arrays?
I wouldn't transform the data at the data source. That job is the responsibility of the UI component. Instead move your logic to the column template function of your grid. [ API reference ]
$('#grid').kendoGrid({
columns: [ {
field: 'fruit',
template: function(dataItem) {
var html = [];
for (var i = 0; i < dataItem.length; i++) {
html.push('' + dataItem[i].name + '');
}
return html.join(', ');
}
}],
dataSource: data
});
Related
I'm sorry if this is a duplicate question but I do not understand the answers of other people. I'm using Twitter Bootstrap Ajax Typeahead Plugin (https://github.com/biggora/bootstrap-ajax-typeahead/) to search emails from data that comes from an SQL query. This is the code I use with a php file, where I use people's emails as valueField and people's names as displayField and it works well.
inputSearch.typeahead({
ajax: {
url: urlAjax + '?requete=rechercheannuaire',
displayField: "description",
valueField: "id",
triggerLength: 2,
method: "get",
loadingClass: "loading-circle",
preProcess: function(data){
if(data.type === "error")
{
return false;
}
return data.datas;
}
},
onSelect: function(data){
//alert("assez tot");
data.text = data.value;
//console.log(data);
$("#chercherinvite").val(data.text);
return data;
}
});
The problem is that I have to be able to search "Dujardin" as well as "Du Jardin" and I cannot find a way to assign multiple values to displayField. If someone could explain how typeahead works, I'd be thankfull, I don't understand the documentation.
According to the plugin documentation, you cannot assign multiple values to the displayField option. However, it is possible for you to re-write events.
After a quick lookup into the source code of bootstrap-ajax-typeahead, we can figure out that the "matcher" event is used as the filter for displaying - or not - values to the user.
To allow to match both "Du jardin" and "Dujardin", we have to manipulate strings. Here, I suggest you to :
Remove any diacritic character
Remove any non-word character (all except [A-Za-z0-9_])
Remove any underscore
Set the string to lowercase
To do #1, I suggest you to use this fantastic script by rdllopes.
I wrote a POC. Here is the JSON source (called "source.json"):
[
{ "id": 1, "name": "jdupont#example.com - Jean Du Pont"},
{ "id": 2, "name": "jdupont2#example.com - Jean Dupont"},
{ "id": 3, "name": "jdupont3#example.com - Jéan Dupônt"},
{ "id": 4, "name": "mbridge#example.com - Michel Bridge"}
]
And here is the script that I used for matching elements :
$('#search').typeahead({
// Our source is a simple JSON file
ajax: 'source.json',
// Display field is a list of names
displayField: 'name',
// And value field a list of IDs
valueField: 'id',
matcher: function(item)
{
// For both needle and haystack, we :
// 1. Remove any diacritic character
// 2. Remove any non-word character (all except [A-Za-z0-9_])
// 3. Remove any underscore
// 4. Set the string to lowercase
var needle = removeDiacritics(this.query).replace(/[^\w]/gi, '').replace('_', '').toLowerCase();
var haystack = removeDiacritics(item).replace(/[^\w]/gi, '').replace('_', '').toLowerCase();
// Does the needle exists in haystack?
return ~haystack.indexOf(needle);
}
});
I have a situation to bind a json data with a key to plot a graph. But graph is plotting correctly but the name of the data is showing the same key. i need to avoid it .
How can i supply a name for my data. I have tried as follows but its seems not working.
Can any guys help one this.
data: {
// columns: [chartData],
json: data,
keys: {
value: [key]
},
type: chartType,
labels: true,
selection: {
enabled: false
},
names: {
data1: 'Some Name'
}
}
Thanks in Advance :)
Kiran Gopal
Instead of data1, you should substitute the value of the variable key. Or you could construct the names value, like so
var names = {}
names[key] = 'Some Name';
var chart = c3.generate({
...
names: names
},
});
Fiddle - http://jsfiddle.net/Ld2apq0g/
I hope this question hasn't been asked elsewhere but I'm running into an issue with a kendoGrid and adding aggregates. This is an existing grid bound to a data Source that is an array.
What is the best way to add an aggregate to an existing data Source?
Here is what I'm doing to bind to the existing data Source:
var grid = $("#myGrid").data("kendoGrid");
grid.dataSource.data(myArray);
Once you set the data you can add new aggregate like shown in the documentation.
var dataSource= new kendo.data.DataSource({
data: [
{ name: "Jane Doe", age: 30 },
{ name: "John Doe", age: 33 }
]
});
// calculate the minimum and maximum age
dataSource.aggregate([
{ field: "age", aggregate: "min" },
{ field: "age", aggregate: "max" }
]);
var ageAggregates = dataSource.aggregates().age;
console.log(ageAggregates.min); // displays "30"
console.log(ageAggregates.max); // displays "33"
When loading a dgrid from a dojo store, is there a way to specify a column to be sorted by default.
Say I have 2 columns, Name and Email, I want the name column sorted by default when the grid is first loaded. What I want is the equivalent of the user clicking on the 'Name' header (complete with the sort arrow indicating the sort direction).
Thanks,
John
You can do something like this :
var mygrid = new OnDemandGrid({
store : someStore,
queryOptions: {
sort: [{ attribute: "name" }]
}
// rest of your grid properties
}, "someNode");
dgrid 1.1.0 - set initial/default sort order
var TrackableRest = declare([Rest, SimpleQuery, Trackable]);
var store = new TrackableRest({target: apiUrl, useRangeHeaders: true, idProperty: 'id'});
var grid = new (declare([OnDemandGrid, Selection, Editor]))({
collection: store,
sort: [{"property":"name", "descending": false}],
className: "dgrid-autoheight",
columns: {
id: {
label: core.id
},
category_text: {
label: asset.category
},
name: {
label: asset.model,
},
I am looking for an example where JSON constructed from the server side is used to represent objects that are then translated into customized widgets in dojo. The JSON would have to be very specific in its structure, so it would not be a very general solution. Could someone point me to an example of this. It would essentially be the reverse of this
http://docs.dojocampus.org/dojo/formToJson
First of all let me point out that JSON produced by dojo.formToJson() is not enough to recreate the original widgets:
{"field1": "value1", "field2": "value2"}
field1 can be literally anything: a checkbox, a radio button, a select, a text area, a text box, or anything else. You have to be more specific what widgets to use to represent fields. And I am not even touching the whole UI presentation layer: placement, styling, and so on.
But it is possible to a certain degree.
If we want to use Dojo widgets (Dijits), we can leverage the fact that they all are created uniformly:
var myDijit = new dijit.form.DijitName(props, node);
In this line:
dijit.form.DijitName is a dijit's class.
props is a dijit-specific properties.
node is an anchor node where to place this dijit. It is optional, and you don't need to specify it, but at some point you have to insert your dijit manually.
So let's encode this information as a JSON string taking this dijit snippet as an example:
var myDijit = new dijit.form.DropDownSelect({
options: [
{ label: 'foo', value: 'foo', selected: true },
{ label: 'bar', value: 'bar' }
]
}, "myNode");
The corresponding JSON can be something like that:
{
type: "DropDownSelect",
props: {
options: [
{ label: 'foo', value: 'foo', selected: true },
{ label: 'bar', value: 'bar' }
]
},
node: "myNode"
}
And the code to parse it:
function createDijit(json){
if(!json.type){
throw new Error("type is missing!");
}
var cls = dojo.getObject(json.type, false, dijit.form);
if(!cls){
// we couldn't find the type in dijit.form
// dojox widget? custom widget? let's try the global scope
cls = dojo.getObject(json.type, false);
}
if(!cls){
throw new Error("cannot find your widget type!");
}
var myDijit = new cls(json.props, json.node);
return myDijit;
}
That's it. This snippet correctly handles the dot notation in types, and it is smart enough to check the global scope too, so you can use JSON like that for your custom dijits:
{
type: "my.form.Box",
props: {
label: "The answer is:",
value: 42
},
node: "answer"
}
You can treat DOM elements the same way by wrapping dojo.create() function, which unifies the creation of DOM elements:
var myWidget = dojo.create("input", {
type: "text",
value: "42"
}, "myNode", "replace");
Obviously you can specify any placement option, or no placement at all.
Now let's repeat the familiar procedure and create our JSON sample:
{
tag: "input",
props: {
type: "text",
value: 42
},
node: "myNode",
pos: "replace"
}
And the code to parse it is straightforward:
function createNode(json){
if(!json.tag){
throw new Error("tag is missing!");
}
var myNode = dojo.create(json.tag, json.props, json.node, json.pos);
return myNode;
}
You can even categorize JSON items dynamically:
function create(json){
if("tag" in json){
// this is a node definition
return createNode(json);
}
// otherwise it is a dijit definition
return createDijit(json);
}
You can represent your form as an array of JSON snippets we defined earlier and go over it creating your widgets:
function createForm(array){
dojo.forEach(array, create);
}
All functions are trivial and essentially one-liners — just how I like it ;-)
I hope it'll give you something to build on your own custom solution.