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Created Using MongoDB in Codeigniter (markdown)

intekhabrizvi 2014-11-24 05:53:50 -08:00
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#Using MongoDB in Codeigniter
## How to install & configure
Download the [Codeigniter-mongo-library](https://github.com/intekhabrizvi/Codeigniter-mongo-library) and unzip it. You will see 2 folder config and libraries. Paste those 2 folders into your codeigniter application folder.
After this, you will see mongo_db.php file in your application/config and application/libraries folder of codeigniter setup.
Now its time to configure cimongo library as per mongodb login details.
1) Open config/mongo_db.php file and set mongodb login details.
2) Open config/autoload.php file and add 'mongo_db' in $autoload['libraries'] array.
Thats it. Installation and Configuration completed. By default library connect to database provided in "default" group.
Now you can access the methods using **$this->mongo_db->** in your controller as well as in model.
## Need more then one database connection in mongo ??
You can have more then one database in your application and you can use them simultaneously in your app just like Codeigniter Active Data Record.
1) Open application/config/mongo_db.php file and create one more database group inside that file. For example
`$config['mongo_db']['newdb']['hostname'] = 'localhost';
$config['mongo_db']['newdb']['port'] = '27017';
$config['mongo_db']['newdb']['username'] = 'username';
$config['mongo_db']['newdb']['password'] = 'password';
$config['mongo_db']['newdb']['database'] = 'database';
$config['mongo_db']['newdb']['db_debug'] = TRUE;
$config['mongo_db']['newdb']['write_concerns'] = (int)1;
$config['mongo_db']['newdb']['journal'] = TRUE;
$config['mongo_db']['newdb']['read_preference'] = NULL;
$config['mongo_db']['newdb']['read_preference_tags'] = NULL;`
You can change group name from "newdb" to anything else you want. After changing the group name, save the file.
2) Now open your controller or model file, where you need another database connection active and write below code in the constructor of the class.
`$this->load->library('mongo_db', array('activate'=>'newdb'),'mongo_db2');`
This will make new connection on new mongoDB and make it available to use as $this->mongo_db2-> inside class
## Methods Available in this library
Insert Method
insert Insert a new document into a collection
batch_insert Insert multiple new documents into a collection
Select Method
select Get select fields from returned documents
where OR get_where Where section of the query
where_in Where something is in an array of something
where_in_all Where something is in all of an array of * something
where_not_in Where something is not in array of something
where_or Where something is based on or
where_gt Where something is greater than something
where_gte Where something is greater than or equal to something
where_lt Where something is less than something
where_lte Where something is less than or equal to something
where_between Where something is in between to something
where_between_ne Where something is in between and but not equal to something
where_ne Where something is not equal to something
like Where something is search by like query
order_by Order the results
limit OR offset Limit the number of returned results
count Document Count based on where query
distinct Retrieve a list of distinct values for the given key across a single collection
Update Method
set Sets a field to a value
unset_field Unsets a field
addtoset Adds a value to an array if doesn't exist
push Pushes a value into an array field
pop Pops a value from an array field
pull Removes an array by the value of a field
rename_field Rename a field
inc Increments the value of a field
mul Multiple the value of a field
max Updates the value of the field to a specified value if the specified value is greater than the current value of the field
min Updates the value of the field to a specified value if the specified value is less than the current value of the field.
update Update a single document in a collection
update_all Update all documents in a collection
Delete Method
delete Delete a single document in a collection
delete_all Delete all documents in a collection
Aggregation Method
aggregate Perform aggregation query on document
Index Method
add_index Create a new index on collection
remove_index Remove index from collection
list_indexes Show all index created on collections
DB Method
switch_db Switch to a different database
drop_db Drops a database
drop_collection Drops a collection
Extra Helper
date Create or convert date to MongoDB based Date