I'm developing Angular2 with Meteor.
When I make a little component with a recursive function, it has some weird error.
Here is my part of codes.
Not recursive - return a result
ngOnInit() {
//this.current_canvas return the right results
this.current_canvas = this.get_canvase(1);
}
get_canvase(which_canvas): Canvas[] {
if (!isNaN(which_canvas)) {
this.current_canvas_id = which_canvas;
return CanvasContents.find().map((messages: Canvas[]) => { return messages; })[0].content;
return '';
} else if(which_canvas == 'most-recent') {
this.get_canvase(1);
}
}
Recursive - Don't return a result
ngOnInit() {
//this.current_canvas Goes to NUll
this.current_canvas = this.get_canvase('most-recent');
}
get_canvase(which_canvas): Canvas[] {
if (!isNaN(which_canvas)) {
this.current_canvas_id = which_canvas;
console.log('this.current_canvas_id : ' + this.current_canvas_id);
return CanvasContents.find().map((messages: Canvas[]) => { return messages; })[0].content;
return '';
} else if(which_canvas == 'most-recent') {
this.get_canvase(1);
}
}
Have I used a wrong syntax? or is it on wrong Angular2 state to get right result?
Related
The entities are updated multiple times in a second. I want to fetch description details at each position and using callback property. The same code is working if I return time or any constant value but gives too much recursion error when I return the description of the entity.
viewer.selectedEntityChanged.addEventListener(function(selectedEntity) {
if (Cesium.defined(selectedEntity)) {
if (Cesium.defined(selectedEntity.description)) {
console.log('Selected ' + selectedEntity.id);
selectedEntity.description = new Cesium.CallbackProperty(function(time) {
var currentDescription = selectedEntity.description.getValue(time);
console.log(currentDescription);
return currentDescription;
// return time;
}, false);
} else {
console.log('Unknown entity selected.');
}
} else {
console.log('Deselected.');
}
});
How to search for 2 different parameters in a dart list?
Is there a simple method?
Can I solve the problem using contains?
void _runFilter(String searchKeyword) {
List<Product> results = [];
if (searchKeyword.isEmpty) {
results = allProducts;
} else {
results = allProducts.where(
(element) =>
element.name.toLowerCase().contains(searchKeyword.toLowerCase()) || element.image.toLowerCase().contains(searchKeyword.toLowerCase()),
),
)
.toList();
results = results +
allProducts
.where(
(element) => element.image.toLowerCase().contains(
searchKeyword.toLowerCase(),
),
)
.toList();
}
// refresh the UI
setState(() {
filteredProducts = results;
});
}
You can write all sorts of if-else-combinations in a closure. If you use the {} notation instead of => it will become clearer. Something like this will accomplish what you are looking for:
results = allProducts.where( (element) {
if ( element.name.toLowerCase().contains(searchKeyword.toLowerCase()) {
return true;
} else if ( element.image.toLowerCase().contains(searchKeyword.toLowerCase()) {
return true;
} else {
return false;
}
}).toList();
If this step is clear, you can then try to combine individual statements into a boolean combination via || or && if this looks more convenient in your code.
I have this code
it('This should pass anyway', function (done) {
testObj.testIt(regStr);
});
testObj
this.testIt = function (regStr) {
selector.count().then(function (orgCount) {
for (var curr = 0; curr < count; curr++) {
checkField(curr, regStr);
}
});
};
function checkField(curr, regStr) {
selector.get(curr).all(by.tagName('li')).get(0).getInnerHtml().then(function (text) {
expect(text).to.match(regStr, curr + '#ERR');
});
}
If one of these expects get a failure, test fails. How can i handle this? I mean - can i somehow count passed and failed expect()ations and return it? or, at least, dont let test break on first error.
I've tried try-catch, but nothing good happened.
it('This should pass anyway', function (done) {
try {
testObj.testIt(regStr);
} catch (e) {
console.log('#err' + e);
}
});
And then i wanted to use done(), but havent found any examples to do the similar. Can u please help me?
Sry for my english
UPD
You can return either null or a string from checkField(), join them up, and expect the array to be empty:
this.testIt = function (regStr) {
selector.count().then(function (orgCount) {
var errors = [];
for (var curr = 0; curr < orgCount; curr++) {
var e = checkField(curr, regStr);
if (e) { errors.push(e); }
}
assert.equal(0, errors.length, errors);
});
};
A cleaner approach would be to use map() to collect the data into an array:
var data = selector.map(function (elm) {
return elm.element(by.tagName('li')).getText();
});
expect(data).toEqual(["test1", "test2", "test3"]);
I'm trying to assert that a name is displayed in a column of a table. I've written an inResults function that will iterate through a column's text to see if a name exists. Here's what I'm trying:
Page object:
this.names = element.all(by.repeater('row in rows').column('{{row}}'));
this.inResults = function(nameString) {
var foundit = '';
this.names.each(function(name) {
name.getText().then(function(it) {
console.log(it); // each name IS printed...
if(it == nameString) {
console.log('it\'s TRUE!!!!'); // this gets printed...
foundit = true;
}
});
});
return foundit; // returns '' but should be true?
};
Spec expect:
expect(friendPage.inResults('Jo')).toBeTruthy();
Both console statements print as expected... but my expect fails as foundit's value is still ''. I've tried this a number of ways and none are working. What am I missing?
I've devised what I think is a better/cleaner way to solve this. It's less complex and doesn't require locator/css code in the method.
friend.page.js
// locator
this.friendName = function(text) { return element.all(by.cssContainingText('td.ng-binding', text)) };
// method
this.inResults = function(name) {
return this.friendName(name).then(function(found) {
return found.length > 0;
});
};
friend.spec.js
expect(friendPage.inResults('Jo')).toBeTruthy();
I've added this to my protractor_example project on GitHub...
I would recommend you to use filter: http://angular.github.io/protractor/#/api?view=ElementArrayFinder.prototype.filter
this.inResults = function(nameString) {
return this.names.filter(function(name) {
return name.getText().then(function(text) {
return text === nameString;
});
}).then(function(filteredElements) {
// Only the elements that passed the filter will be here. This is an array.
return filteredElements.length > 0;
});
});
// This will be a promise that resolves to a boolean.
expect(friendPage.inResults('Jo')).toBe(true);
Use map to do this.This will return a deferred that will resolve with the values in an array, so if you have this:
this.mappedVals =element.all(by.repeater('row in rows').column('{{row}}')).map(function (elm) {
return elm.getText();
});
It will resolve like this:
this.inResults = function(nameString) {
var foundit = '';
mappedVals.then(function (textArr) {
// textArr will be an actual JS array of the text from each node in your repeater
for(var i=0; i<textArr.length; i++){
if(it == textArr[i]) {
console.log('it\'s TRUE!!!!'); // this gets printed...
foundit = true;
}
}
return foundit;
});
}
And Use that in Spec file like,
friendPage.inResults('Jo').then(function(findIt){
expect(findIt).toBeTruthy();
});
I would like to get a generic function working for getting Data in Template of a Page and if the property is not set, getting it from the Parent or Parents Parent and so on. With generic I mean independent of Relations like db, HasOne, HasMany, ManyMany. Let's say I have this for ManyMany but would like to detect if it's a Object, HasManyList or ManyManyList or a value. Is anything like this built in or how would you go about?
function ManyManyUpUntilHit($ComponentName){
$Component = $this->getManyManyComponents($ComponentName);
if($Component && $Component->exists())
return $Component;
$Parent = $this->Parent();
if(is_object($Parent) && $Parent->ID != 0){
return $Parent->ManyManyUpUntilHit($ComponentName);
} else {
return null;
}
}
in template:
$ManyManyUpUntilHit(Teaser)
There is no in built method to do this in Silverstripe. You will need to write your own function to do this.
Here is an example to get a page's has_one, has_many or many_many resource by parameter, or go up the site tree until a resource is found, or we hit a root page:
function getComponentRecursive($componentName) {
// has_one
if ($this->has_one($componentName)) {
$component = $this->getComponent($componentName);
if (isset($component) && $component->ID)
{
return $component;
}
}
// has_many
if ($this->has_many($componentName)) {
$components = $this->getComponents($componentName);
if (isset($components) && $components->count())
{
return $components;
}
}
// many_many
if ($this->many_many($componentName)) {
$components = $this->getManyManyComponents($componentName);
if (isset($components) && $components->count())
{
return $components;
}
}
if ($this->ParentID != 0)
{
return $this->Parent()->getComponentRecursive($componentName);
}
return false;
}