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Diffstat (limited to 'user_guide_src/source/libraries/form_validation.rst')
| -rw-r--r-- | user_guide_src/source/libraries/form_validation.rst | 205 |
1 files changed, 79 insertions, 126 deletions
diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst index 1076b1433..42422f9d7 100644 --- a/user_guide_src/source/libraries/form_validation.rst +++ b/user_guide_src/source/libraries/form_validation.rst @@ -353,10 +353,10 @@ commonly is:: set_value('field name') Open your myform.php view file and update the **value** in each field -using the ``set_value()`` function: +using the :func:`set_value()` function: -**Don't forget to include each field name in the ``set_value()`` -functions!** +**Don't forget to include each field name in the :func:`set_value()` +function calls!** :: @@ -393,11 +393,11 @@ Now reload your page and submit the form so that it triggers an error. Your form fields should now be re-populated .. note:: The :ref:`class-reference` section below - contains functions that permit you to re-populate <select> menus, + contains methods that permit you to re-populate <select> menus, radio buttons, and checkboxes. -**Important Note:** If you use an array as the name of a form field, you -must supply it as an array to the function. Example:: +.. important:: If you use an array as the name of a form field, you + must supply it as an array to the function. Example:: <input type="text" name="colors[]" value="<?php echo set_value('colors[]'); ?>" size="50" /> @@ -497,8 +497,8 @@ some particular rule, use the set_rules() method:: Where rule corresponds to the name of a particular rule, and Error Message is the text you would like displayed. -If you'd like to include a field's "human" name, or the optional -parameter some rules allow for (such as max_length), you can add the +If you'd like to include a field's "human" name, or the optional +parameter some rules allow for (such as max_length), you can add the **{field}** and **{param}** tags to your message, respectively:: $this->form_validation->set_message('min_length', '{field} must have at least {param} characters.'); @@ -579,7 +579,7 @@ Showing Errors Individually =========================== If you prefer to show an error message next to each form field, rather -than as a list, you can use the ``form_error()`` function. +than as a list, you can use the :func:`form_error()` function. Try it! Change your form so that it looks like this:: @@ -880,15 +880,15 @@ use: ========================= ========== ============================================================================================= ======================= Rule Parameter Description Example ========================= ========== ============================================================================================= ======================= -**required** No Returns FALSE if the form element is empty. -**matches** Yes Returns FALSE if the form element does not match the one in the parameter. matches[form_item] -**differs** Yes Returns FALSE if the form element does not differ from the one in the parameter. differs[form_item] -**is_unique** Yes Returns FALSE if the form element is not unique to the table and field name in the is_unique[table.field] - parameter. Note: This rule requires :doc:`Query Builder <../database/query_builder>` to be +**required** No Returns FALSE if the form element is empty. +**matches** Yes Returns FALSE if the form element does not match the one in the parameter. matches[form_item] +**differs** Yes Returns FALSE if the form element does not differ from the one in the parameter. differs[form_item] +**is_unique** Yes Returns FALSE if the form element is not unique to the table and field name in the is_unique[table.field] + parameter. Note: This rule requires :doc:`Query Builder <../database/query_builder>` to be enabled in order to work. -**min_length** Yes Returns FALSE if the form element is shorter then the parameter value. min_length[3] -**max_length** Yes Returns FALSE if the form element is longer then the parameter value. max_length[12] -**exact_length** Yes Returns FALSE if the form element is not exactly the parameter value. exact_length[8] +**min_length** Yes Returns FALSE if the form element is shorter than the parameter value. min_length[3] +**max_length** Yes Returns FALSE if the form element is longer than the parameter value. max_length[12] +**exact_length** Yes Returns FALSE if the form element is not exactly the parameter value. exact_length[8] **greater_than** Yes Returns FALSE if the form element is less than or equal to the parameter value or not greater_than[8] numeric. **greater_than_equal_to** Yes Returns FALSE if the form element is less than the parameter value, greater_than_equal_to[8] @@ -897,15 +897,15 @@ Rule Parameter Description not numeric. **less_than_equal_to** Yes Returns FALSE if the form element is greater than the parameter value, less_than_equal_to[8] or not numeric. -**alpha** No Returns FALSE if the form element contains anything other than alphabetical characters. +**alpha** No Returns FALSE if the form element contains anything other than alphabetical characters. **alpha_numeric** No Returns FALSE if the form element contains anything other than alpha-numeric characters. **alpha_numeric_spaces** No Returns FALSE if the form element contains anything other than alpha-numeric characters - or spaces. Should be used after trim to avoid spaces at the beginning or end. -**alpha_dash** No Returns FALSE if the form element contains anything other than alpha-numeric characters, - underscores or dashes. -**numeric** No Returns FALSE if the form element contains anything other than numeric characters. -**integer** No Returns FALSE if the form element contains anything other than an integer. -**decimal** No Returns FALSE if the form element contains anything other than a decimal number. + or spaces. Should be used after trim to avoid spaces at the beginning or end. +**alpha_dash** No Returns FALSE if the form element contains anything other than alpha-numeric characters, + underscores or dashes. +**numeric** No Returns FALSE if the form element contains anything other than numeric characters. +**integer** No Returns FALSE if the form element contains anything other than an integer. +**decimal** No Returns FALSE if the form element contains anything other than a decimal number. **is_natural** No Returns FALSE if the form element contains anything other than a natural number: 0, 1, 2, 3, etc. **is_natural_no_zero** No Returns FALSE if the form element contains anything other than a natural @@ -954,155 +954,108 @@ Name Parameter Description Class Reference *************** -.. php:class:: Form_validation - -The following methods are intended for use in your controller. +.. class:: CI_Form_validation -$this->form_validation->set_rules() -=================================== - - .. php:method:: set_rules ($field, $label = '', $rules = '', $errors = array()) + .. method:: set_rules($field[, $label = ''[, $rules = '']]) :param string $field: The field name :param string $label: The field label :param mixed $rules: The rules, as a string with rules separated by a pipe "|", or an array or rules. - :param array $errors: Custom error messages - :rtype: Object + :returns: object Permits you to set validation rules, as described in the tutorial sections above: - - :ref:`setting-validation-rules` - - :ref:`saving-groups` + - :ref:`setting-validation-rules` + - :ref:`saving-groups` -$this->form_validation->run() -============================= - - .. php:method:: run ($group = '') + .. method:: run([$group = '']) :param string $group: The name of the validation group to run - :rtype: Boolean + :returns: bool Runs the validation routines. Returns boolean TRUE on success and FALSE on failure. You can optionally pass the name of the validation group via the method, as described in: :ref:`saving-groups` -$this->form_validation->set_message() -===================================== - - .. php:method:: set_message ($lang, $val = '') + .. method:: set_message($lang[, $val = '']) :param string $lang: The rule the message is for :param string $val: The message - :rtype: Object + :returns: object Permits you to set custom error messages. See :ref:`setting-error-messages` -$this->form_validation->set_data() -================================== - - .. php:method:: set_data ($data = '') + .. method:: set_error_delimiters([$prefix = '<p>'[, $suffix = '</p>']]) + + :param string $prefix: Error message prefix + :param string $suffix: Error message suffix + :returns: object + + Sets the default prefix and suffix for error messages. + + .. method:: set_data($data) :param array $data: The data to validate + :returns: void Permits you to set an array for validation, instead of using the default - $_POST array. + ``$_POST`` array. -$this->form_validation->reset_validation() -========================================== + .. method:: reset_validation() - .. php:method:: reset_validation () + :returns: void Permits you to reset the validation when you validate more than one array. This method should be called before validating each new array. -$this->form_validation->error_array() -===================================== - - .. php:method:: error_array () + .. method:: error_array() - :rtype: Array + :returns: array Returns the error messages as an array. -.. _helper-functions: - -**************** -Helper Reference -**************** - -The following helper functions are available for use in the view files -containing your forms. Note that these are procedural functions, so they -**do not** require you to prepend them with $this->form_validation. - -form_error() -============ - -Shows an individual error message associated with the field name -supplied to the function. Example:: - - <?php echo form_error('username'); ?> - -The error delimiters can be optionally specified. See the -:ref:`changing-delimiters` section above. + .. method:: error_string([$prefix = ''[, $suffix = '']]) -validation_errors() -=================== + :param string $prefix: Error message prefix + :param string $suffix: Error message suffix + :returns: string -Shows all error messages as a string: Example:: + Returns all error messages (as returned from error_array()) formatted as a + string and separated by a newline character. - <?php echo validation_errors(); ?> + .. method:: error($field[, $prefix = ''[, $suffix = '']]) -The error delimiters can be optionally specified. See the -:ref:`changing-delimiters` section above. - -set_value() -=========== + :param string $field: Field name + :param string $prefix: Optional prefix + :param string $suffix: Optional suffix + :returns: string -Permits you to set the value of an input form or textarea. You must -supply the field name via the first parameter of the function. The -second (optional) parameter allows you to set a default value for the -form. Example:: + Returns the error message for a specific field, optionally adding a + prefix and/or suffix to it (usually HTML tags). - <input type="text" name="quantity" value="<?php echo set_value('quantity', '0'); ?>" size="50" /> + .. method:: has_rule($field) -The above form will show "0" when loaded for the first time. + :param string $field: Field name + :returns: bool -set_select() -============ + Checks to see if there is a rule set for the specified field. -If you use a <select> menu, this function permits you to display the -menu item that was selected. The first parameter must contain the name -of the select menu, the second parameter must contain the value of each -item, and the third (optional) parameter lets you set an item as the -default (use boolean TRUE/FALSE). - -Example:: - - <select name="myselect"> - <option value="one" <?php echo set_select('myselect', 'one', TRUE); ?> >One</option> - <option value="two" <?php echo set_select('myselect', 'two'); ?> >Two</option> - <option value="three" <?php echo set_select('myselect', 'three'); ?> >Three</option> - </select> - -set_checkbox() -============== - -Permits you to display a checkbox in the state it was submitted. The -first parameter must contain the name of the checkbox, the second -parameter must contain its value, and the third (optional) parameter -lets you set an item as the default (use boolean TRUE/FALSE). Example:: - - <input type="checkbox" name="mycheck[]" value="1" <?php echo set_checkbox('mycheck[]', '1'); ?> /> - <input type="checkbox" name="mycheck[]" value="2" <?php echo set_checkbox('mycheck[]', '2'); ?> /> +.. _helper-functions: -set_radio() -=========== +**************** +Helper Reference +**************** -Permits you to display radio buttons in the state they were submitted. -This function is identical to the **set_checkbox()** function above. +Please refer to the :doc:`Form Helper <../helpers/form_helper>` manual for +the following functions: -:: +- :func:`form_error()` +- :func:`validation_errors()` +- :func:`set_value()` +- :func:`set_select()` +- :func:`set_checkbox()` +- :func:`set_radio()` - <input type="radio" name="myradio" value="1" <?php echo set_radio('myradio', '1', TRUE); ?> /> - <input type="radio" name="myradio" value="2" <?php echo set_radio('myradio', '2'); ?> /> +Note that these are procedural functions, so they **do not** require you +to prepend them with ``$this->form_validation``.
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