How to do this requirement using backbone?
When I enter values in first text field second field must be disabled and when I delete the data from first field second field must be enabled and vice versa using backbone
I searched many placed but have not got what I needed.
To Enable / Disable input field in backbone as you type,you need to bind the keyup event to an event handler in your view. This can be done by adding the corresponding entry in the events hash.
Binding keyup event in your Backbone Views :
events : {
"keyup #first_text" : "firstFunction",
},
// THE EVENT HANDLER FUNCTION.
firstFunction : function(e) {
if(e.currentTarget.value && e.currentTarget.value.trim() != "") {
$("#input_text").prop("disabled",true);
}
else {
$("#input_text").prop("disabled",false);
}
},
Fiddle : https://jsfiddle.net/rnwvf3r9/
Related
The base model of my application has a status attribute.
Let's assume, for simplicity, that status might be either pending or deleted.
I have an upper menu with these two status values, when you click one of them you see all objects with this status (I use router to trigger a filter).
My problem is that I need to draw a different template for each status.
deleted object has delete forever and recover buttons
pending object has delete, edit and some other buttons (also some textarea...)
I wonder what would be the best solution for this problem.
I thought of creating a different view for each status, but then I don't know how to deal with it in the collection level.
I also thought of creating different templates and deal with it in the model-view level, but again - I have no idea whether it is possible and if yes - how.
Finally, I can solve it with same template and view, hiding what is not necessary inside the view, but then the code becomes quite ugly in my point of view.
Ideas?? Thanks!
If you want to create a different view for each status, you do it this way :
Router {
clickDeletedMenu : {
var collection = new MyCollection();
var deletedView = new DeletedView({ model : collection });
collection.fetch({ status : 'deleted' }); // filter deleted objects
},
clickPendingMenu : {
var collection = new MyCollection();
var pendingView = new PendingView({ model : collection });
collection.fetch({ status : 'pending' }); // filter deleted objects
},
}
If you want to create differents templates, you do it this way :
View {
render : {
if (this.model.status == 'deleted') {
// render deleted template
} else {
// render pending template
}
}
}
Finally, in my point of view, you can use the same template and view, and hiding what is not necessary inside the template not the view.
nb : the code is used just to illustrate the idea, it's not going to execute :)
enter code hereI have a window in which I have a form with trigger fields. So by trigerring I mean , if I select a value from first combo, its trigerring the succeding combos with their's first values. This is working fine when I open the window for the first time. But if close it and open it for the second time, it will generate error as me.store.loading is undefined.
I am using on load event of combo to fire the next combo with its first value. Please see code below which I have put in the render event of a field in that window.
Thanks,
sj
me.control({
'addinp #renderCmp':{
render:me.registerTriggerCalls
}
})
registerTriggerCalls : function() {
var stcombo = Ext.getCmp('StField');
stcombo.store.on('load', function(store, record, opts)
{debugger;
if (store.totalCount <= 0)
{ return; }
stcombo.setValue(store.getAt(0).data.stThru);
stcombo.fireEvent('select', stcombo);
});
var adcombo = Ext.getCmp('AdField');
adcombo.store.on('load', function(store, record, opts)
{
if (store.totalCount <= 0)
{ return; }
adcombo.setValue(store.getAt(0).data.adDate);
adcombo.fireEvent('select', adcombo);
});
}
When does the store get created/destroyed? Are you creating a new store with each combo box or are you reusing a global store each time?
In the comments above, I give you a way to troubleshoot, but if you're reusing the same store object over and over, you either need to use a managed listener (preferred) or unregister your handlers when your combo boxes are destroyed.
var stcombo = Ext.getCmp('StField');
stcombo.mon(store, 'load', function(store, record, opts)
{
if (store.totalCount <= 0)
{ return; }
stcombo.setValue(store.getAt(0).data.stThru);
stcombo.fireEvent('select', stcombo);
});
var adcombo = Ext.getCmp('AdField');
adcombo.mon(store, 'load', function(store, record, opts)
{
if (store.totalCount <= 0)
{ return; }
adcombo.setValue(store.getAt(0).data.adDate);
adcombo.fireEvent('select', adcombo);
});
Assuming that's the case, what's happening is that the life span of your store and your combo box is disconnected. The listeners are tied to the store's life span which doesn't have visibility to the combo box's life span. Hence, the old listeners don't get removed until the store is destroyed which is obviously bad -- for a number of reasons -- but causing your exception because the closure references a destroyed combo box.
A managed listener solves this by essentially tying the listener's life span to the combo box instead of the store.
If I have a store backed combobox selection that fires an event under ExtJS 4, how do I go about getting the full object that is represented by that selection?
In general, you can use the findRecordByValue method on the combobox:
combobox.on('change', function(combobox, newValue, oldValue) {
// Get the old and the new records.
// NOTE: The underlying store is not guaranteed to
// contain an associated record.
var oldRecord = combobox.findRecordByValue(oldValue);
if (oldRecord) {
// Do something...
}
var newRecord = combobox.findRecordByValue(newValue);
if (newRecord) {
// Do something...
}
});
Figured this out almost immediately after posting my question.
My problem was that I was binding to the wrong event, I was using 'change' instead of 'selection'.
The selection event gives you the record with the full object contained in it.
I need to get(retrieve) updated cell value in controller. (MVC)
So I tried this,
var modified = this.getItemGrid().getStore().getUpdatedRecords();
console.log(modified); // return [] empty array
var modified = this.getItemList_Store().getUpdatedRecords();
console.log(modified); // return [] empty array
but always it returns empty array even I updated some cell value.
anybody know what I am doing wrong?
Here is my part of view code,
Ext.define("App.view.orders.ItemList_view", {
extend: "Ext.grid.Panel",
alias: "widget.itemList_view",
plugins: [
Ext.create('Ext.grid.plugin.CellEditing', {
clicksToEdit: 1
})
],
initComponent: function () {
this.store = "ItemList_store";
this.columns = [
{
xtype: 'checkcolumn', text: "Ship", width: 50, dataIndex: "DR"
},
{ header: "test", width: 100, dataIndex: "test",
editor: {
xtype : 'textfield'
}
}
];
this.selModel = Ext.create("Ext.selection.CheckboxModel");
//this.selModel = Ext.create("Ext.selection.CellModel"); // It does not works either.
this.callParent(arguments);
},
.
.
.
Thank you!
[EDIT]
Thank you very much for your answer! I have some more question about editor grid.
Its much different from Ext3. so I'm very confusing now :(
Q1. How to collect edited record data (once click button)?
the event fired once the grid cell be changed.
but I want collect edited grid record once I click the 'Update edited cell' button, and I want to update all together at the once.
In Ext3, I did like this,
(button) click : function(){
var modified = mygridStore.getModifiedRecords();
var recordsToSend = [];
Ext.each(modified, function(record){
recordsToSend.push(record.data);
});
var grid = Ext.getCmp('grid');
grid.el.mask('Updating','x-mask-loading');
grid.stopEditing();
recordsToSend = Ext.encode(recordsToSend);
Ext.Ajax.request({
url : '/test/test',
params : {
data : recordsToSend
},
success : function(response){
grid.el.unmask();
alert(response.responseText);
mygridStore.commitChanges();
},
failure : function(response){
mygridStore.rejectChanges();
}
});
}
How can I change the code for Extjs4 ?
Q2. I don't know still how to find out for changed checkcolumn.
I tried this, but I does not work for checkcolumn (of cause I tested after change checkbox)
// grid coumn
{
xtype: 'checkcolumn', header: "My Check Column", width: 50, dataIndex: "CH"
}
-
// in control
'myGrid': {
validateedit: function (plugin, edit) {
console.log(edit);
},
checkchange: function (plugin, edit) {
console.log(edit);
console.log(edit.value);
}
}
Q3. When I click the cell to edit, the show some HTML tag in -_-;;
I really appreciate for your help. and thank you very much for your valuable time!
The editors (cell editors or row editors) do not commit their values to the store until you complete the edit - which means pressing ENTER or blurring the active cell editor by clicking elsewhere on the page, or clicking the save button on the row editor form .
If your purpose for reading the updated value in your editor is to perform some kind of validation I would suggest simply listening to the validateedit event in your grid's controller, as described here.
The second argument that this event passes to your handler contains a lot of data about the edit that you can then perform validation with. If the edit doesn't pass your validation you can return false from your handler and the value in the celleditor will revert to it's original value. The validateedit event gets fired from the editor grid itself so you would add an event handler in your controller for it like this:
Ext.define('MyApp.controller.MyController', {
init: function() {
this.control({
'mygridpanel': {
validateedit: function(plugin, edit) {
// silly validation function
if (edit.value != 'A Valid Value') {
return false;
}
},
},
});
},
});
But you should check out the link above to see all the different objects available in that second argument I named edit.
The validateedit event is fired right before the record is committed into the store - after the user has already clicked ENTER or blurred the editor, i.e., while the editor is closing.
If you are trying to get the celleditor's value before it starts to close, for some reason other than validation for example, you could get the active celleditor's value like this:
// myGrid is a reference to your Ext.grid.Panel instance
if (myGrid.editingPlugin.editing) {
var value = myGrid.editingPlugin.getActiveEditor().field.value
console.log('value: ' + value);
}
If there is no active editor then myGrid.editingPlugin.getActiveEditor().field would throw an error, that's why I wrapped a conditional around it.
One other point I should make, for validation in editor grids, I found that it is easiest to just put a validator config in the grid column's editor definition. That will give you all the handy validation CSS while the user is setting the field's value and alert him if there is a problem with the value before he tries to save it.
To get an idea of what I mean, try entering letters in the date column of this example. Mouse over the editor cell and you will get the error message.
EDIT
It seems I misunderstood you original question, I'll break down my answers to your questions above though,
Question 1
Once you have completed an edit (clicked ENTER or ), your call to mygridStore.getModifiedRecords() should be working fine because the record will have been committed to the store. I see that it was not working, I will cover that in a moment.
I should point out that ExtJS4 has a store.sync() method as covered here.
Instead of extracting the modified records from the store, encoding them, manually doing an ajax request to save them to the server and then manually committing them you can call this sync method and it will take care of all of these actions for you.
If you have different URLs to handle the different create, read, update, destroy operations fired off by your store's load and sync methods, you can use the store's proxy api config to map your URLs to these operations as covered here. Or you can set-up your server side controller to be able to differentiate between your store's load request (read operations default to HTTP GET) and it's sync requests (create, update and delete operations default as HTTP POST).
There could be many different ways to go about doing this on the server side, the way I usually do it is to have one SQL stored procedure for GET requests and one for POST requests for any given store. I include the store name as an extra param and then my server side controller runs the appropriate stored procedure based on whether it is a GET or a POST request.
Question 2
Cell editing doesn't support checkcolumn edits. You have to make a different handler to listen to changes on that, something like this:
checkchange: function (column, rowIndex, checked) {
var record = store.getAt(rowIndex),
state = checked ? 'checked' : 'unchecked'
console.log('The record:');
console.log(record)
console.log('Column: ' + column.dataIndex);
console.log('was just ' + state)
}
Your call to mygridStore.getModifiedRecords() should be able to pick up the check changes also however, they get committed to the grid's store right away after being checked. store.sync() would also pick up changes to checkcolumn.
Question 3
I can't completely tell what is causing that problem but it may be something strange going on with your validateedit event, your handler should be returning true or false.
As I said earlier, I misunderstood the reason you originally asked this question. I thought you were trying to do some kind of validation while an edit was in progress. Now I understand that you are trying to get all of the modified records from the store after all the editing is completed in order to save them to the database, I was thrown off because in ExtJS 4 a store is usually saved to the database with the sync method as I mentioned.
In other words, you don't need the validateedit event or checkchange event to get a list of modified records.
The actual problem you are having might be trouble with the store's getter methods (getModifiedRecords, getUpdatedRecords) in some 4.07 versions, take a look at this post and this one.
So with all that said, the best advice I can give you is 1) try out the stores sync method for saving modified data to the database and 2) upgrade to ExtJS 4.1, there were a lot of bugs that were straightened out between 4.07 and 4.1 which you should be able to take advantage of, I cut out about 75% of the overrides I was using to make things work when I switched over to 4.1.
EditedGrid.plugins[0].completeEdit();
This will make the active changes commit and call edit event also.
listeners: {
validateedit: function (editor, e) {
//console.log(editor);
var oldVal = editor.originalValue;
var newVal = editor.value;
}
}
I want to show only one GridPanel,which I dynamically add by switch click button event, in window.
var event_menu = new Ext.menu.Menu( {
id : "event_menu",
items : [ {
text : 'record1',
handler : function() {
win.add(item_list_panel);//dynamica add GridPanel to show server data
win.doLayout();
item_list_store.load();
}
}, {
text : 'record2',
handler : function() {
win.remove(item_list_panel);//I want to remove it inorder to show the item_list_panel2 and only show one panel.
win.add(item_list_panel2);
win.doLayout();
item_list_store.load();
}
} ]
});
and this menu belong to my window tbar.
when I click record win will show item_list_panel and I want to when I click record2 the item_list_panel2 will show in win and item_list_panel will hide.
If I win.remove(item_list_panel) will have an error :
c.getPositionEl().dom is undefined
How can I do it,Thanks
I can barely understand your question, but if I understand correctly you can do it several ways.
you can destroy the component directly
item_list_panel.destroy()
you can go through your items and select it by id
win.items.item('item_id').destroy()
There are also ways to remove it without completely destroying it, depends what you want to do