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A validator<\/a> to check if a resource has a certain number\nof edges with a predicate.<\/p>\n

An example of its usage is an edit form where the article needs between 1 and 5 keywords and an author.<\/p>\n

It can be attached to any (hidden) input field or the form itself.<\/p>\n

An example to check the number of keywords attached to a resource:<\/p>\n

<div class="form-group"> <!-- form-group has class "has-error" if validation fails -->\n    <input type="hidden" id="check-author" value="author">\n    {% validate id="check-author"\n                type={hasedge id=id minimum=1}\n                only_on_submit\n    %}\n    <p class="if-has-error" style="display: none">{_ You must have at least one author. _}<\/p>\n    <p class="if-has-validated" style="display: none">{_ Great, you added at least one author. _}<\/p>\n<\/div>\n<\/code><\/pre>\n
On form submit the check will be done. And either of the two messages will be shown. The predicate to be checked is the\nvalue of the hidden input element.<\/p>\n
The hidden input element is not submitted as it doesn’t have a name.<\/p>\n
Arguments<\/h2>\n
Argument<\/th>Description<\/th>Example<\/th><\/tr><\/thead>
id<\/code><\/td>Subject resource id for the edge check.<\/td>id<\/code><\/td><\/tr>
predicate<\/code><\/td>Predicate to check, defaults to the value of the input element the validator is connected to.<\/td>"author"<\/code><\/td><\/tr>
minimum<\/code><\/td>Minimum amount of edged allowed, defaults to 1.<\/td>2<\/code><\/td><\/tr>
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