What I want:
fetch some documents
for every document, set a field:
change it, if it exists
add it, if it doesn't
What I do:
// fresh data
print_r(iterator_to_array($collection->find()->limit(2)));
// query
$docs = $collection->find()->limit(2);
// fetch
foreach ( $docs AS $id => $doc ) {
// update
$collection->update(array('_id' => $doc['_id']), array(
'$set' => array(
'existing_field' => 'x',
'new_field' => 'y',
),
), array('multiple' => false));
}
// verify
print_r(iterator_to_array($collection->find()->limit(2)));
Why doesn't that do anything? The existing field isn't changed and the new field isn't added. Is the condition maybe wrong??
PS. The full code (with a lot of junk in between): http://pastebin.com/CNfCVxex
lines 33 - 37 -- fresh data
lines 63 - 76 -- query, fetch & update
lines 79 - 80 -- verify
Not familiar with the driver you are using here, but from your description you can achieve what you want in a single database hit, no need to fetch/loop/update..
The $set operator will insert or update a field depending on whether it exists or not.
db.Collection.update({}, { $set : { "myfield" : "x" } }, false, true)
The above would set the 'myfield' field in all documents in the collection to 'x', or if it already exists it would change the value to 'x'. Is that what you want to achieve?
I suspect you need to convert the string $doc['_id'] back to a MongoId by using new MongoId. See the example at the bottom of this page: http://www.php.net/manual/en/class.mongoid.php
Related
Alright so I have an insert query that I would like to run but the issue I am having is with getting object properties/values that I need to insert.
Say I have a query that looks like the one below.
$this->db->insert('tblitems_in', array(
'platform' => $item['Platform'],
'ram' => $item['RAM'],
'qty' => $item['qty'],
'rate' => number_format($item['rate'], 2, '.', ''),
'rel_id' => $insert_id,
'rel_type' => 'estimate',
'item_order' => $item['order'],
'unit' => $item['unit']
));
This works fine when the person chooses RAM on the webpage which sets the $item Objects property 'RAM' to the value that was picked. Now if they choose HardDrive, that properties name is now sent as 'HardDrive' with the value they chose. Is there a way that i Could replace the 'ram' and 'RAM' from the below example with a variable so I could change what the property name is that I would like to insert and insert into the corresponding db column?
EDIT:
I should have added that the options on the webpage are also dynamically created from a database so I do not know at the time of coding what the property names are. They could be RAM, HardDrive, Processor, maybe even Elephant. I was hoping I could use variables so that I could look at the DB used to create the webpage so that I know the property names and then dynamically add those names into the query.
EDIT:
Right now I am using the following code in order to get all the possible options that can be received from the webpage from a DB the webpages uses to create itself.
$plat_options = $this->db->get('tblplatform_options')->row()->name;
In the database right now it is only populated with names RAM and HardDrive to make things known for testing purposes. So this returns $plat_options = {RAM, HardDrive}. I now have to figure out how to test is $item has these(RAM and HardDrive) as properties and if $item does have them then add them into the query previously shown.
You can set an array of key => variable names, then loop over those values to see if they exist in the $item variable and, if so, add that value to the data to be inserted into the db:
//default array of data to insert
$data = [
'platform' => $item['Platform'],
'qty' => $item['qty'],
'rate' => number_format($item['rate'], 2, '.', ''),
'rel_id' => $insert_id,
'rel_type' => 'estimate',
'item_order' => $item['order'],
'unit' => $item['unit']
];
//Get column names from db
$plat_options = $this->db->get('tblplatform_options')->row()->name;
// $plat_options = [RAM, HardDrive]
//Check if $item[$name] exists. If it does, add that to the
// array of data to be inserted
foreach($plat_options as $key) {
if(array_key_exists($key, $item)) {
$data[$key] = $item[$key];
}
}
$this->db->insert('tblitems_in', $data);
edit
I'm not sure this will work (I don't understand the use case).
It is possible, using array_diff_key to get a list of array keys that exist in $item but not in $data. With this array of keys, you can add the missing keys.
I have altered my previous code to demonstrate this.
You could create the array one element at a time based on whatever field data you received. I used a switch statement, but it could be a simple if/then/else as well.
$data_array = array();
$data_array['platform'] = $item['Platform']
switch($item['Object'] {
case 'HardDrive':
$data_array['harddrive'] = $item['HardDrive'];
break;
case 'RAM':
$data_array['ram'] = $item['RAM'];
break;
}
$data_array['qty'] = $item['qty'];
$data_array['rate' = number_format($item['rate'], 2, '.', '');
$data_array['rel_id'] = $insert_id;
$data_array['rel_type' = 'estimate';
$data_array['item_order'] = $item['order'];
$data_array['unit'] = $item['unit'];
$this->db->insert('tblitems_in', $data_array);
Inside a database called user_notifications there is a collection for each user with their user id.
There should a static document that would contain a counter column default set to 0 for each collection.
In a simple method call i need to increment the counter value by 1, as a newbie in MongoDB i think i am messed up. Need some idea, here is my object that would do that:
private function increment_notification()
{
// database => notification
// collection => _238
// document => unseen_counter
$unseen = $this->notification->_238->unseen_counter; // selecting a single document
// if the document didn't exists then create the document and
// set a default value 0 to the counter row.
if(!$unseen) {
// create a new document
$this->notification->insertOne([
'_id' => 'unseen_counter',
'counter' => '0'
]);
} else {
// we already have the document
// now update the counter value by 1
$unseen->update([
'$set' => [
'counter' => $unseen['counter'] + 1;
]
]);
}
}
I ended up writing this method as a pseudo code :[
As a beginner in MongoDB, how is my schema design? any suggestion to make it better?
Also, how i should run the above queries?
Thanks
Another way of doing this is to use the $inc operator. Here is documentation and example for $inc.
I have this document:
places: {
'name': 'wallmart',
'categories' : [{'name':'store','accuracy':'1'}]
}
A place can have a lot of categories, each with a different value.
In certain situations, the value of a category can rise.
Im trying to update but its not working, it changes the document and becomes like this:
{...
'categories' : {'name':'store','accuracy':'2'}
...}
It removes the array and add just one subdocument.
This is my php code:
$query = array('_id'=>$place['_id']);
$acc = $place_cat['accuracy'] + 1;
$params = array('$set' => array("categories" => array('name'=>$cat['name'],'accuracy'=>$acc)));
$col->update($query,$params);
Which is the correct update sintax?
Thanks
$col->update(array('_id'=>$place['_id'], 'categories.name'=>'store'),
array('$inc' => array('categories.$.accuracy'=>1)))
Will do what you want, atomically as well.
I want to save log entries to my MySQL database from Zend Framework 2. I am using Zend\Log\Logger with a Zend\Log\Writer\Db writer. By supplying the writer with an array, one can choose which columns to save what data to (e.g. timestamp into a "log_date" column) and which data to save. Here is what I am doing:
$logger = new Zend\Log\Logger();
$mapping = array(
'timestamp' => 'timestamp_column',
'priority' => 'priority_column',
'message' => 'message_column',
'extra' => 'extra_column'
);
$logger->addWriter(new Zend\Log\Writer\Db($dbAdapter, 'table_name', $mapping));
$logger->err('some message', array('some extra information'));
The problem I am facing is that the array of column names and their values contain an incorrect column name for the "extra" column. Based on the array above, it should be inserting the value "some extra information" into the "extra_column" column. The problem is that the Zend\Log\Writer\Db class is using the letter "e" as the name of the extra column. This comes from the first letter of "extra_column" in my array above. For some reason, it is taking the first letter of "extra_column" and using it as the column name instead of the entire value.
I took a look at the source code. The mapEventIntoColumn method is being used to get the column names and values as an array. I copied in the relevant part of the method below.
// Example:
// $event = array('extra' => array(0 => 'some extra information'));
// $columnMap = array('extra' => 'extra_column');
// Return: array('e' => 'some extra information')
// Expected (without looking at the code below): array('extra_column' => 'some extra information')
protected function mapEventIntoColumn(array $event, array $columnMap = null) {
$data = array();
foreach ($event as $name => $value) {
if (is_array($value)) {
foreach ($value as $key => $subvalue) {
if (isset($columnMap[$name][$key])) {
$data[$columnMap[$name][$key]] = $subvalue;
}
}
}
}
return $data;
}
The $event parameter is an array containing the same keys as my $mapping array in my first code snippet and the values for the log message. The $columnMap parameter is the $mapping array from my first code snippet (array values are column names).
What actually seems to happen is that because I am passing in extra information as an array (this is required), the inner foreach loop is executed. Here, $key is 0 (the index) so it is actually doing like this: $columnMap['extra'][0]. This gives the letter "e" (the first letter in "extra_column"), which is used as the column name, where it should be the entire column name instead.
I tried to supply my own key in the extra array when calling the log method, but the same happens. The official documentation shows no examples of usage of the extra parameter. I want to insert information that can help me debug errors into my table, so I would like to use it.
Is this a bug or am I missing something? It seems really strange to me! I hope I explained it well enough - it is quite tricky!
Since Daniel M has not yet posted his comment as an answer, I will refer you to his comment which solved the problem.
I'm having an annoying problem. I'm trying to find out what fields of a form were changed, and then insert that into a table. I managed to var_dump in doUpdateObjectas shown in the following
public function doUpdateObject($values)
{
parent::doUpdateObject($values);
var_dump($this->getObject()->getModified(false));
var_dump($this->getObject()->getModified(true));
}
And it seems like $this->getObject()->getModified seems to work in giving me both before and after values by setting it to either true or false.
The problem that I'm facing right now is that, some how, sfWidgetFormSelect seems to be saving one of my fields as a string. before saving, that exact same field was an int. (I got this idea by var_dump both before and after).
Here is what the results on both var dumps showed:
array(1) {["annoying_field"]=> int(3)} array(1) {["annoying_field"]=>string(1)"3"}
This seems to cause doctrine to think that this is a modification and thus gives a false positive.
In my base form, I have
under $this->getWidgets()
'annoying_field' => new sfWidgetFormInputText(),
under $this->setValidators
'annoying_field' => new sfValidatorInteger(array('required' => false)),
and lastly in my configured Form.class.php I have reconfigured the file as such:
$this->widgetSchema['annoying_field'] = new sfWidgetFormSelect(array('choices' => $statuses));
statuses is an array containing values like {""a", "b", "c", "d"}
and I just want the index of the status to be stored in the database.
And also how can I insert the changes into another database table? let's say my Log table?
Any ideas and advice as to why this is happen is appreciated, I've been trying to figure it out and browsing google for various keywords with no avail.
Thanks!
Edit:
ok so I created another field, integer in my schema just for testing.
I created an entry, saved it, and edited it.
this time the same thing happened!
first if you what the status_id to be saved in the database, you should define your status array like this:
{1 => "a", 2 => "b", 3 => "c", 4 => "d"}
So that way he know that 1 should be rendered like "a" and so on. Then, when saving, only the index should be saved.
About saving in another database, my advise is to modify the doSave method defined by the Form class yo match your needs. I only know how Propel deals with it, maybe this could help:
the doSave method dose something like this:
protected function doSave($con = null)
{
if (null === $con)
{
$con = $this->getConnection();
}
$old = $this->getObject()->getModifiedValues($this);//Define this
$new_object = new Log($old);//Create a new log entry
$new_object->save($con));//save it!
$this->updateObject();
$this->getObject()->save($con);
// embedded forms
$this->saveEmbeddedForms($con);
}
Hope this helps!
Edit:
This is an example extracted from a model in one of my applications and its working ok:
Schema:
[...]
funding_source_id:
type: integer
required: true
[...]
Form:
$this->setWidget('funding_source_id', new sfWidgetFormChoice(array(
'choices' => array(1 => 'asdads', 2 => '123123123' , 3 => 'asd23qsdf'),
)));
$this->setValidator('funding_source_id', new sfValidatorChoice(array(
'choices' => array(1 => 'asdads', 2 => '123123123' , 3 => 'asd23qsdf'),
'required' => true
)));
About the log thing, that could be quite more complex, you should read the current implementation of the doSave method in the base form class, currently sfFomrObject on Symfony1.4., and when and how it delegates object dealing with modified values.
Okay,
It turns out I forgot to do a custom validator to use the array key instead.