I have some problem with this mongoid. It's my first time to use mongoDB, Before, I always use mySQL.
Here is my problem.
I have model "User". In model "User" has embedded one "Profile",
and I want to search users data with criteria name "dummy" for field "profile.first_name",
"profile.last_name", and "username".
I already use this syntax, but I got empty result:
#filter = "dummy"
#users = User.any_of({'profile.first_name' => /#{#filter}/i, 'profile.last_name' => /#{#filter}/i, :username => /#{#filter}/i})
Try this
#filter = "dummy"
#users = User.any_of({:profile.first_name => "/#filter/i"},{:profile.last_name="/#filter/i"}, {:username => "/#filter/i"})
look at the brackets.
Related
I'm using CakePHP 3.5.13 to build an application which has 4 separate databases.
The main database (Datasource default in config/app.php) for the application has been baked. It was a legacy database, and the naming conventions are not written according to the way CakePHP specifies. Nonetheless it works, after going through the Models and editing things.
In a controller I have the following:
$substances = TableRegistry::get('Substances');
$query = $substances->find()->limit(250)->offset(0);
$query->select(['id', 'app_id', 'name']);
$query->contain([
'Cas' => [
'sort' => ['Cas.id' => 'ASC']
]
]);
$query->contain([
'Ecs' => [
'sort' => ['Ecs.id' => 'ASC']
]
]);
If I var_dump($query) I get an SQL string as follows:
SELECT Substances.id AS `Substances__id`,
Substances.app_id AS `Substances__app_id`,
Substances.name AS `Substances__name`
FROM substances Substances LIMIT 250 OFFSET 0
I need to modify this so the query contains an INNER JOIN to a table which is stored in one of the other databases (Datasource sdb5_tmpdata in config/app.php). The SQL I need is as follows:
SELECT Substances.id AS `Substances__id`,
Substances.app_id AS `Substances__app_id`,
Substances.name AS `Substances__name`,
Substances.date AS `Substances__date`
FROM substances Substances
INNER JOIN `sdb5_tmpdata`.`searching_1745` AS tf
ON tf.id = Substances.id LIMIT 250 OFFSET 0;
The difference between the above query and original is the following SQL:
INNER JOIN `sdb5_tmpdata`.`searching_1745` AS tf
ON tf.id = Substances.id
I don't have a corresponding Model for the table 'searching_1745' because these tables are dynamically created (and later dropped) on a database which holds "temporary" user data.
Is it possible to modify the query object, $query, such that I can introduce the custom SQL that does the inner join?
I have tried $query = $query->newExpr()->add('INNER JOIN 'sdb5_tmpdata'.'searching_1745' AS tf ON tf.id = Substances.id'); but it doesn't work.
the query builder let you build the query as you like it. It does not matter if you don't have a Table Object for that table
$query->join([
'tf ' => [
'table' => 'sdb5_tmpdata.searching_1745',
'type' => 'INNER',
'conditions' => 'tf.id = Substances.id',
]);
see here
I don't know if you can modify the query object, but tou can always write your own custom queries:
use Cake\Datasource\ConnectionManager;
$conn = ConnectionManager::get('default');
$query = $conn->query('query goes here');
for more info, read: https://book.cakephp.org/3.0/en/orm/database-basics.html#executing-queries
I'm using postgres full text search with the pg_search gem. The search itself is working well, but I need to further filter the results and here are the details:
class Notebook < ActiveRecord::Base
has_many :invites
def self.text_search(query)
if query.present?
search(query)
else
scoped
end
end
Notebooks Controller:
def index
if params[:query].present?
#notebooks = Notebook.text_search(params[:query]).includes(:invites).where("invites.email = :email OR notebooks.access = :access OR notebooks.access = :caccess OR notebooks.user_id = :uid", email: current_user.email, access: "open", caccess: "closed", uid: current_user.id)
else
#notebooks = Notebook.includes(:invites).where("invites.email = :email OR notebooks.access = :access OR notebooks.access = :caccess OR notebooks.user_id = :uid", email: current_user.email, access: "open", caccess: "closed", uid: current_user.id)
end
The error I get is 'missing FROM-clause entry for table 'invites'. I have tried many different things including:
replacing 'includes' with 'joins'
replacing 'includes(:invites) with joins('LEFT JOIN "invites" ON "invites"."email" = "email" ')
changing the order of the .text_search and the .includes calls.
adding the includes call in the controller, in the model, in a scope, and in the text_search function definition.
I keep getting the same error, and when using the joins call with SQL it does not filter by invite emails, and shows multiple repeats of each search result.
I would just remove the include(:invites) because the text_search itself is working just fine. But I really need this condition to be included.
Any help would be greatly appreciated. Maybe I'm just getting my SQL call wrong, but I also would like to understand why the .includes(:invites) works without the pg text_search but won't work with it.
Edit #1 - more specific question
I think there are 2 slightly different questions here. The first seems to be some issue with combining pg_search gem and an 'includes(:invites)' call. The second question is what is the equivalent SQL statement that I can use in order to avoid making the 'includes(:invites)' call. I think it should be a LEFT JOIN of some sort, but I don't think I'm making it correctly. In my db, a Notebook has_many invites, and invites have an attribute 'email'. I need the the notebooks with invites that have an email equal to the current_user's email.
Help with either of these would be great.
Here is the link that showed me the solution to my problem:
https://github.com/Casecommons/pg_search/issues/109
Here is my specific code:
class Notebook < ActiveRecord::Base
has_many :invites
include PgSearch
pg_search_scope :search, against: [:title],
using: {tsearch: {dictionary: "english"}},
associated_against: {user: :name, notes:[:title, :content]}
scope :with_invites_and_access, lambda{ |c_user_email|
joins('LEFT OUTER JOIN invites ON invites.notebook_id = notebooks.id').where('invites.email = ? OR notebooks.access = ? OR notebooks.access = ?', c_user_email, 'open', 'closed')
}
def self.text_search(query)
if query.present?
search(query).with_invites_and_access(current_user_email)
else
scoped
end
end
end
The key was the joins statement. joins(:invites) doesn't work, includes(:invites) doesn't work. The full SQL statement is required:
joins('LEFT OUTER JOIN invites ON invites.notebook_id = notebooks.id')
I can see a join but I cannot see what makes joined invites fields to appear in the SELECT statement.
I think You may need to add the fields from the invites table into select() like this
select('invites.*').joins('LEFT OUTER JOIN invites ON invites.notebook_id = notebooks.id').where('invites.email = ? OR notebooks.access = ? OR notebooks.access = ?', c_user_email, 'open', 'closed')
}
I am trying to return a variable with values of an array of users. There are a few conditions that must be met. The user must have public_find set to true, it must not be the current_user (session variable of the user currently logged in), and it must not already be part of a friendship. The first and second conditions work perfectly. However, I am having an issue with the third part where the current_users.friendships needs to be an array of the ID values of the users where the association already exists. Any thoughts?
#users = User.find(:all, :conditions => ['
public_find=true AND
id <> ? AND
id NOT IN (?)',
current_user.id, current_user.friendships])
Edit:
I've figured out that I was missing pluck from the list. This works good now. However, if someone does not yet have a friend then current_user.friendships.pluck(:friend_id) will return NULL. I know that it is bad practice and unexpected results returned when using NOT IN and NULL. However, how do you create a condition where you can set the value to something realistic like [0] or [1] if the array returned is empty?
#users = User.find(:all, :conditions => ['
public_find=true AND
id <> ? AND
id NOT IN (?)',
current_user.id, current_user.friendships.pluck(:friend_id) || [0]])
EDIT AGAIN:
I got it working. However, now I want to know if this is best practice to have a statement like this. It basically is doing a check to see if the current_user.friendships.pluck(:friend_id) is empty or not. If it is then return [0]. Otherwise return an array of the user ids (foreign keyed as friend_id).
#users = User.find(:all, :conditions => ['
public_find=true AND
id <> ? AND
id NOT IN (?)',
current_user.id,
(current_user.friendships.pluck(:friend_id).empty? ? [0] : current_user.friendships.pluck(:friend_id))])
You can write this a little nicer ..
Show all users where public_find is true and also exclude the currently logged in user or any of their friends
ids = current_user.friendships.map(&:friend_id).concat([current_user.id])
#users = User.where(:public_find => true).where('id not in ?', ids)
I would use an arel table for this (which guarantees the code will work on any database):
t, f = User.arel_table, current_user.friendships
query = t[:public_find].eq(true).and(t[:id].not_eq(current_user.id))
query = query.and(t[:id].not_in(f.pluck(:friend_id))) unless f.empty?
#users = User.where(query)
Generated SQL for current_user = 3 and a single friendship with a user with id = 1:
SELECT "users".* FROM "users"
WHERE ("users"."public_find" = 't' AND "users"."id" != 3 AND "users"."id" NOT IN (1))
If current_user.friendships is nil, the unless f.empty? clause will prevent that condition from being applied at all, so it will not appear in the SQL:
SELECT "users".* FROM "users"
WHERE ("users"."public_find" = 't' AND "users"."id" != 3)
Also, note that because this code uses where instead of find, the final result is an ActiveRecord::Relation rather than an array of results. This means that you can further chain conditions onto it, e.g. to order the results by updated_at, change the last line to:
#users = User.where(query).order(:created_at)
Pls i have the following code in my model
Letter.count(:id, :conditions => ["language_id = #{lang} AND :created_at => '#{start_date.to_date.strftime('%Y-%m-%d')}'..'#{end_date.to_date.strftime('%Y-%m-%d')}' " ])
I am trying to get the count of letters.id of different letters between the given dates.
This is the error an having...
Please those anyone know what am doing wrong...Thanks
SQLite3::SQLException: near ">": syntax error: SELECT COUNT("letters"."id") FROM "letters" WHERE ("letters".language_id = 1) AND (language_id = 1 AND :created_at => '2011-05-01'..'2011-05-08
This can be much simplified. A couple points:
You don't use the :created_at => ... format within a string
You need to use between ? and ? for dates.
You don't need to manually strftime your dates, Rails will handle this automatically.
In Rails 3, the preferred way is to use where(...) instead of a :conditions Hash for your count(...).
You should probably use Rails' safe interpolation for your language_id field too
Letter.where("language_id = ? AND created_at between ? and ?", lang, start_date.to_date, end_date.to_date).count
I must connect from my Rails app to a remote database on a Java application.
I have a query like this:
find_by_sql("select c_templateid, c_templateinfoid, c_startdate, c_enddate, c_active,
campaign, shortcode, prefix, c_descriptivename, c_description, c_templatename
from (active_services aser join activity a on aser.c_primaryprefixid =
a.c_primaryprefixid ) join matrix_templateinfo using(c_templateinfoid)
where campaign is not null)")
I need to refactor it to the AR#find() method, because I want later add complex :conditions on it. I dont want convert them into string to append then later to the find_by_sql method.
find(:all,
:select => "c_templateid, c_templateinfoid, c_startdate, c_enddate, c_active,
campaign, shortcode, prefix, c_descriptivename, c_description, c_templatename",
# :joins => WHAT I SHOULD DO HERE ?
:conditions => "campaign is not null"
)
You can also specify complex joins in :joins
:joins => "matrix_templateinfo ON <conditions go here> AND campaing IS NOT NULL"
but you should really start padronizing your field names if you're using rails :]