Searching for fields that don't match a regex in MongoMapper

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In MongoMapper I can use the following query to search for items based on regex match:

Foo.where(:name => /Foo.*/)

How can I search for items that their name field do not match /Foo.*/?

You can use $not

db.customers.find( { name : { $not : /acme.*corp/i } } );

Searchable Fields by Object in Salesforce Classic, Operators; Condition rules; Batch fields as search conditions; Using saved For performance reasons, we don't recommend building queries with single or  Form 1 – Search Multiple Fields. It is considered a complete search form since it is able to search on multiple fields with different methods. It uses a combination of text box, list box and combo box. There are different types of input data for searching listed below: #1 You can search by key words on Customer Name, City, and phone fields.

If you're in python (pymongo), this won't work, you get a confusing error about how you should use BSON regex.

However, it will accept python regex objects directly:

db['collection'].find({'name': {'$not': re.compile("^__TEST")}})

Make additional fields searchable, I want to search all fields within solr for certain value. If I search for title:six I receive my result, however if I search for *:six I don't. I've got an all field that collects  Field limiters are typically a drop-down menu located by the search box where you type your search term. For example, in EBSCO databases you will see Select a Field Optional in the drop-down menu to the right of the first search box. Learn more about search fields and indexing in our guide:

Or something like this in mongomapper also works to search for the case where an email domain is not found in the email field, and approved if false:

non_org_email_users = org.users.where(
  :email => { '$not' => /@#{org.official_email}/i }, 
  approved: false).all

Searching, By default all message fields are included in the search if you don't specify a message field to search in. Messages that include the term ssh: ssh. Messages that  Excluding fields from searches. You may have an app with fields including information that you don't want to include in search. You can set which fields are included or excluded in searches. Understanding Quick Base searches. Quick Base lets you search for data in your app in a number of places, such as: Search (in the global bar) When building

Find Items in Setup with Advanced Setup Search , Search for Empty Fields button To search for items that don't have a value set for a particular field, you must use the the open and close bracket  You can search by custom field name or custom field ID (i.e. the number that Jira automatically allocates to an custom field). Note, it is safer to search by custom field ID than by custom field name. It is possible for a custom field to have the same name as a built-in Jira system field; in which case, Jira will search for the system field

Defining criteria for saved searches, If you don't need additional fields in your search, set Search Mode to a setting  If you don't select a specific field, most databases automatically search the Title, Abstract, & Subject Heading fields. If you are not sure what the default search is in a specific database, check the database's HELP page. Usually the field options are located in a drop-down menu next to the individual search boxes.

Searching all solr fields for value, If you don't select a particular field, you can choose either the field where the cursor If you search for Flamingo using the Any Part of Field option, Access finds  I want to search one field to match a specific string. I then want to extract from the structure all fields for those cases where the string matched. I would prefer to do this with out loops.