Checkall checkboxes and at least one checkbox checked angular 2
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I want to do validation for checkboxes here without form tag. At least one checkbox should be selected.
for other field I will put required and do the error|touched|valid etc. but since checkbox is not single input, I cannot put required in every checkbox because all checkbox will be compulsory to checked. so how do I do the validation to alert user atleast one should be checked .
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