how to select data of single column from a grid data.
The grid data is passed as following:
var url = "/Main/Grid?tbname="+parameter;
var jsonp = new $.ig.JSONPDataSource({
dataSource: url, paging: {
enabled: true, pageSize: 10,
type: "remote"
}
});
$("#listingGrid").igGrid("dataSourceObject", jsonp).igGrid("dataBind");
I have to retrieve data in another page from this grid and select one column from this data.
and i have retrieved data like this
var ds = window.parent.$("#listingGrid").igGrid("option", "dataSource");
but not able to access one column data.
I'm assuming that since you are using the DataSource directly that you don't want the actual columns in the grid, which might differ from the columns in the data source depending on how you have the grid set up.
The easiest way to go about this would probably be to call the data function off of the data source once you retrieve it from your other page. This function returns an array of objects that are the items in each row. Once you have that you can iterate over each of the items and query the individual property.
var ds = window.parent.$('#listingGrid').igGrid('option', 'dataSource');
$.each(ds.data(), function (i, item) {
var itemProperty = item.Property;
// ...
});
You'll need to make sure that the data is all loaded from the service first though or data will possibly return an empty array.
Related
I use that script to fill datatables:
function fillTable(tableid, data, columns) {
return $(tableid).DataTable({
data:data,
"columns": columns
});
}
Where data are aray of objects and that works great.
Then I try to change the data in datatable with new datas:
function tableRefresh(dataTable, datas) {
dataTable.data = datas;
}
Problem is: my tables does not display / refresh the data.
I tried with
dataTable.draw()
Any idea of how to refersh the content of the datatable so it display the current data ?
How can I provide a list of columns I want hidden on table load through the ColVis extension?
Also, is there a way to retrieve the list of columns currently visible/hidden?
Specify visible columns
You can set visibility with columnDefs or columns options to target specific columns along with columns.visible option to set column visibility.
For example, to hide a second column initially, use the following options:
var table = $('#example').DataTable({
'columnDefs': [
{ targets: 1, visible: false }
]
});
See this jsFiddle for demonstration.
Get a list of visible columns
You can get a list of visible columns bu using columns().visible() method.
var colVisible = table.columns().visible();
See this jsFiddle for demonstration.
The ColVis extension gives no method to hide columns on load. That is .Datatable() job to do.
To get the list of columns which are visible/hidden you can do something like this
var length = myTable.columns().nodes().length,
result = [];
for(var i=0;i<length;i++){
result.push(myTable.column(i).visible());
}
console.log(result);
Here is a demo http://jsfiddle.net/dhirajbodicherla/189Lp6u6/25/
I just started using dgrid, and going through the dTunes sample, I'm unable to find the id associated with each row in the list. This is pretty remedial on my part, but how would I also get the id I sent from the datasource?
define([
'require',
'dgrid/List',
'dgrid/OnDemandGrid',
'dgrid/Selection',
'dgrid/Keyboard',
'dgrid/extensions/ColumnHider',
'dojo/_base/declare',
'dojo/_base/array',
'dojo/Stateful',
'dojo/when',
'dstore/RequestMemory',
'put-selector/put',
'dojo/domReady!'
], function (require, List, Grid, Selection,
Keyboard, Hider, declare, arrayUtil, Stateful,
when, RequestMemory, put) {
var cstsNode = put(listNode, 'div#cstsCars');
...
var cstsList = new TunesList({}, cstsNode);
var dataCSTS = new RequestMemory({ target: require.toUrl('./dataCSTS.json') });
...
dataCSTS.fetch().then(function (cars) {
cstsCars = arrayUtil.map(cars, pickField('Description'));
cstsCars.unshift('All (' + cstsCars.length + ' CSTS Cars' + (cstsCars.length !== 1 ? 's' : '') + ')');
cstsList.renderArray(cstsCars);
});
...
cstsList.on('dgrid-select', function (event) {
var row = event.rows[0];
console.log(row.id); // shows row number. How do I get the real id or other fields?
console.log(row.data); // shows row text that is displayed ("sample text 1")
console.log(row.data.id); // undefined
});
Here is a snippet of sample data like I'm supplying:
[{"id":"221","Description":"sample text 1"},
{"id":"222","Description":"sample text 2"},
{"id":"223","Description":"sample text 3"}]
I'd like to see the id. Instead, row.id returns 1,2 and 3, ie the row numbers (or id dgrid created?).
You haven't really shown a complete example, but given that you're using a store anyway, you'd have a much easier time if you let dgrid manage querying the store for you. If you use dgrid/OnDemandList (or dgrid/List plus dgrid/extensions/Pagination), you can pass your dataCSTS store to the collection property, it will render it all for you, and it will properly pick up your IDs (since Memory, and RequestMemory by extension, default to using id as their identity property).
The most appropriate place to do what you're currently doing prior to renderArray would probably be in the renderRow method if you're just using List, not Grid. (The default in List just returns a div with a text node containing whatever is passed to it; you'll be passing an object, so you'd want to dig out whatever property you actually want to display, first.)
If you want a header row, consider setting showHeader: true and implementing renderHeader. (This is false in List by default, but Grid sets it to true and implements it.)
You might want to check out the Grids and Stores tutorial.
I think the problem might be that I was modeling my code based on the dTunes sample code, which has 3 lists that behave a little differently than a regular grid.
For now, I'm using the cachingStore that is available in the lists. So the way I get the id:
cstsList.on('dgrid-select', function (event) {
var row = event.rows[0];
var id = storeCSTS.cachingStore.data[row.id - 1].id; // -1 because a header was added
console.log(id);
});
I'm not sure whether this will work if I ever try to do sorting.
Is there a simpler list type than DataGrid that can be connected to a store for Dojo?
I would like the data abstraction of the store, but I don't need the header and cell stucture. I would like to be more flexible in the representation of the datalines, where maybe each line calls an function to get laid out...
You ask a really good question. I actually have a blog post that is still in draft form called "The DataGrid should not be your first option".
I have done a couple thing using the store to display data from a store in a repeated form.
I have manually built an html table using dom-construct and for each.
var table = dojo.create('table', {}, parentNode);
var tbody = dojo.create('tbody', {}, table); // a version of IE needs this or it won't render the table
store.fetch({ // this is a dojo.data.ItemFileReadStore, but you cana dapt to the dojo.Store API
query: {},
onComplete: function(itms) {
dojo.forEach(itms, function(itm, idx) {
var tr = dojo.create('tr', {}, tbody);
// use idx to set odd/even css class
// create tds and the data that goes in them
});
}
});
I have also created a repeater, where I have an html template in a string form and use that to instantiate html for each row.
var htmlTemplate = '<div>${name}</div>'; // assumes name is in the data item
store.fetch({ // this is a dojo.data.ItemFileReadStore, but you cana dapt to the dojo.Store API
query: {},
onComplete: function(itms) {
dojo.forEach(itms, function(itm, idx) {
var expandedHtml = dojo.replace(htmlTemplate, itm);
// use dojo.place to put the html where you want it
});
}
});
You could also have a widget that you instantiate for each item.
I create dojox.grid.datagrid and I fill content from array like on example last example on page. During time, I change value of that array in code. How to refresh content of that grid ? How to load new data from changed array ?
To change values in the grid, you will need to change the value in the grid's store. The grid data is bound to the store data, and the grid will update itself as needed.
So the key is to understand Dojo's data api and how stores work in Dojo. Rather than manipulating the data directly in the grid, manipulate it in the store.
Ideally, the store is your array that you manipulate as the application runs and you should not be needing to sync the array to the grid. Just use the ItemFileWriteStore as your data holder unless thats not possible.
Also, using the dojo data identity api makes it much simple to find items in the grid if that is possible. Assuming you know when an item is updated, deleted, or changed in your application you should be able to modify the grid store as needed when the action happens. This is definitely the preferred approach. If you can't do that you will have to do a general fetch and use the onComplete callback to manually sync your arrays which will be very slow and won't scale well, in which case you may as well just create a new store all together and assign it to the grid with grid.setStore(myNewStore)
Here is a fiddle with a basic create, update, and delete operation: http://jsfiddle.net/BC7yT/11/
These examples all take advantage of declaring an identity when creating the store.
var store = new dojo.data.ItemFileWriteStore({
data: {
identifier : 'planet',
items: itemList
}
});
UPDATE AN EXISITNG ITEM:
//If the store is not in your scope you can get it from the grid
var store = grid.store;
//fetchItemByIdentity would be faster here, but this uses query just to show
//it is also possible
store.fetch({query : {planet : 'Zoron'},
onItem : function (item ) {
var humans = store.getValue(item, 'humanPop');
humans += 200;
store.setValue(item, 'humanPop', humans);
}
});
INSERT A NEW ITEM:
store.newItem({planet: 'Endron', humanPop : 40000, alienPop : 9000});
} catch (e) {
//An item with the same identity already exists
}
DELETE AN ITEM:
store.fetchItemByIdentity({ 'identity' : 'Gaxula', onItem : function (item ) {
if(item == null) {
//Item does not exist
} else {
store.deleteItem(item);
}
}});
The following code snippet can be used to update the grid:
var newStore = new dojo.data.ItemFileReadStore({data: {... some new data ...});
var grid = dijit.byId("gridId");
grid.setStore(newStore);
EDIT:
Dogo data grid reference guide (add/remove rows example, updating grid data examples )
(I suppose you already have a working grid and you want to completely change the grid's store)
Create a new datastore with your new value :
dataStore = new ObjectStore({ objectStore:new Memory({ data: data.items }) });
(data is the reponse from an ajax request for me)
Change your grid's store with the new one :
grid.store = dataStore;
Render :
grid.render();
This Will update Grid Store and refresh the View of the Grid in latest Version of Dojo 1.9
grid.store = store;
grid._refresh();
I had a server-side filtered EnhancedGrid, which was refreshing happily by changing the store, and shown in the other answers.
However I had another EnhancedGrid that would not refresh when a filter was applied. It may have been to do with the fact it was filtered client side (but data still coming from server using JsonRest store), but I don't really know the cause. Eitherway, the solution was to refresh with the following code:
grid.setFilter(grid.getFilter());
It's hacky and strange, but if it all else fails...
with this i can update a specifi row. this example is for a treegrid.
var idx = this.treeGrid.getItemIndex(item);
if(typeof idx == "string"){
this.treeGrid.updateRow(idx.split('/')[0]);
}else if(idx > -1){
this.treeGrid.updateRow(idx);
}