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Thread: Set an empty text to grid if store has an exception

  1. #1
    Sencha User coshmos's Avatar
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    Default Set an empty text to grid if store has an exception

    Hi.

    I've got the panel
    Code:
    Ext.create('Ext.grid.Panel', {
        title: 'Simpsons',
        store: Ext.data.StoreManager.lookup('simpsonsStore'),
        columns: [{
            text: 'Name',
            dataIndex: 'name'
        },
        {
            text: 'Email',
            dataIndex: 'email',
            flex: 1
        },
        {
            text: 'Phone',
            dataIndex: 'phone'
        }],
        height: 200,
        width: 400,
        renderTo: Ext.getBody(),
        viewConfig: {
            emptyText: 'Something is wrong'
        }
    });
    And the store:
    Code:
    Ext.create('Ext.data.Store', {
        storeId: 'simpsonsStore',
        fields: ['name', 'email', 'phone'],
        data: {
            'items': [{
                'name': 'Lisa',
                "email": "lisa@simpsons.com",
                "phone": "555-111-1224"
            },
            {
                'name': 'Bart',
                "email": "bart@simpsons.com",
                "phone": "555-222-1234"
            },
            {
                'name': 'Homer',
                "email": "home@simpsons.com",
                "phone": "555-222-1244"
            },
            {
                'name': 'Marge',
                "email": "marge@simpsons.com",
                "phone": "555-222-1254"
            }]
        },
        proxy: {
            type: 'memory',
            reader: {
                type: 'json',
                root: 'items'
            }
        },
        url: 'StoreUrl',
        listeners: {
            exception: function(proxy, response, operation) {
                Ext.Msg.show({
                    title: 'Exception',
                    msg: response.statusText + response.status,
                    buttons: Ext.Msg.OK,
                    icon: Ext.Msg.ERROR
                });
            }
        }
    });
    I want to set an emptyText (or just show it) when 'exception' is fired. Is it possible?

  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
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    Default

    The view will listen to the load event of the store and if the store has zero records in it it will show the emptyText. It may listen to datachanged, not 100% on that without looking.
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
    ________________
    Learn BBCode and use it! Checkout the CODE tag!

    Check out my GitHub, lots of nice things for Ext JS and Sencha Touch
    https://github.com/mitchellsimoens

  3. #3
    Sencha User coshmos's Avatar
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    Default

    I add a listener through store proxy events and it works:
    Code:
    this.store.proxy.on('exception', function (proxy, response, operation) {
    	me.emptyText = 'Error: ' + response.statusText + '<br/>Code: ' + response.status;
    	me.view.loadMask.hide();
    });?
    But the emptyText doesn't appear. Why?

  4. #4
    Sencha User coshmos's Avatar
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    Default

    Ok. The EmptyText doesn't appear because I've got dirty data. So, I just add a dummy row and then remove all rows. Not a good code, but it's working.
    Code:
    this.store.proxy.on('exception', function (proxy, response, operation) {
                if (autoUpdateTask)
                    Ext.TaskManager.stop(autoUpdateTask);
                me.emptyText = 'Error: ' + response.statusText + '<br/>Code: ' + response.status;
                if (me.items.items[0]) {
                    me.items.items[0].store.add({});
                    me.items.items[0].store.removeAll();
                }
                me.view.loadMask.hide();
    });
    I need one little step to update emptyText from default to custom.

  5. #5
    Sencha User coshmos's Avatar
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    Default

    Done!
    Code:
    		this.store.proxy.on('exception', function (proxy, response, operation) {
    			if (autoUpdateTask)
    				Ext.TaskManager.stop(autoUpdateTask);
    			var emptyText = 'Error: ' + response.statusText + '<br/>Code: ' + response.status;
    			me.view.emptyText = '<div class="x-grid-empty">' + emptyText + '</div>';
    			if (me.items.items[0]) {
    				me.items.items[0].store.add({});
    				me.items.items[0].store.removeAll();
    			}
    			me.view.loadMask.hide();
    		});

  6. #6
    Sencha User
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    Default Here is the actual solution

    Grid view is not ready at the time we apply text with me.getView().refresh() so that's reason following works as the private method me.getView().applyFirstRefresh() internally having defer for view to get ready.
    Please try this....

    me.getView().emptyText = 'Test Comment';
    me.getView().applyFirstRefresh();

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