1 | package Mojolicious::Validator;
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2 | use Mojo::Base -base;
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3 |
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4 | use Mojo::Util 'trim';
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5 | use Mojolicious::Validator::Validation;
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6 |
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7 | has checks => sub {
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8 | {
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9 | equal_to => \&_equal_to,
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10 | in => \&_in,
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11 | like => sub { $_[2] !~ $_[3] },
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12 | num => \&_num,
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13 | size => \&_size,
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14 | upload => sub { !ref $_[2] || !$_[2]->isa('Mojo::Upload') }
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15 | };
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16 | };
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17 | has filters => sub { {trim => \&_trim} };
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18 |
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19 | sub add_check { $_[0]->checks->{$_[1]} = $_[2] and return $_[0] }
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20 | sub add_filter { $_[0]->filters->{$_[1]} = $_[2] and return $_[0] }
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21 |
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22 | sub validation {
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23 | Mojolicious::Validator::Validation->new(validator => shift);
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24 | }
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25 |
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26 | sub _equal_to {
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27 | my ($v, $name, $value, $to) = @_;
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28 | return 1 unless defined(my $other = $v->input->{$to});
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29 | return $value ne $other;
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30 | }
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31 |
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32 | sub _in {
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33 | my ($v, $name, $value) = (shift, shift, shift);
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34 | $value eq $_ && return undef for @_;
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35 | return 1;
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36 | }
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37 |
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38 | sub _num {
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39 | my ($v, $name, $value, $min, $max) = @_;
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40 | return 1 if $value !~ /^[0-9]+$/;
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41 | return defined $min && $min > $value || defined $max && $max < $value;
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42 | }
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43 |
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44 | sub _size {
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45 | my ($v, $name, $value, $min, $max) = @_;
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46 | my $len = ref $value ? $value->size : length $value;
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47 | return $len < $min || $len > $max;
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48 | }
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49 |
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50 | sub _trim { trim $_[2] // '' }
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51 |
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52 | 1;
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53 |
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54 | =encoding utf8
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55 |
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56 | =head1 NAME
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57 |
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58 | Mojolicious::Validator - Validate values
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59 |
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60 | =head1 SYNOPSIS
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61 |
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62 | use Mojolicious::Validator;
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63 |
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64 | my $validator = Mojolicious::Validator->new;
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65 | my $v = $validator->validation;
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66 | $v->input({foo => 'bar'});
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67 | $v->required('foo')->like(qr/ar$/);
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68 | say $v->param('foo');
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69 |
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70 | =head1 DESCRIPTION
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71 |
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72 | L<Mojolicious::Validator> validates values for L<Mojolicious>.
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73 |
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74 | =head1 CHECKS
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75 |
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76 | These validation checks are available by default.
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77 |
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78 | =head2 equal_to
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79 |
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80 | $v = $v->equal_to('foo');
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81 |
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82 | String value needs to be equal to the value of another field.
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83 |
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84 | =head2 in
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85 |
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86 | $v = $v->in('foo', 'bar', 'baz');
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87 |
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88 | String value needs to match one of the values in the list.
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89 |
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90 | =head2 like
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91 |
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92 | $v = $v->like(qr/^[A-Z]/);
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93 |
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94 | String value needs to match the regular expression.
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95 |
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96 | =head2 num
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97 |
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98 | $v = $v->num;
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99 | $v = $v->num(2, 5);
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100 | $v = $v->num(2, undef);
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101 | $v = $v->num(undef, 5);
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102 |
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103 | String value needs to be a non-fractional number and if provided in the given
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104 | range.
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105 |
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106 | =head2 size
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107 |
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108 | $v = $v->size(2, 5);
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109 |
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110 | String value length or size of L<Mojo::Upload> object in bytes needs to be
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111 | between these two values.
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112 |
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113 | =head2 upload
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114 |
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115 | $v = $v->upload;
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116 |
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117 | Value needs to be a L<Mojo::Upload> object, representing a file upload.
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118 |
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119 | =head1 FILTERS
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120 |
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121 | These filters are available by default.
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122 |
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123 | =head2 trim
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124 |
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125 | $v = $v->optional('foo', 'trim');
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126 |
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127 | Trim whitespace characters from both ends of string value with
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128 | L<Mojo::Util/"trim">.
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129 |
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130 | =head1 ATTRIBUTES
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131 |
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132 | L<Mojolicious::Validator> implements the following attributes.
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133 |
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134 | =head2 checks
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135 |
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136 | my $checks = $validator->checks;
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137 | $validator = $validator->checks({size => sub {...}});
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138 |
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139 | Registered validation checks, by default only L</"equal_to">, L</"in">,
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140 | L</"like">, L</"num">, L</"size"> and L</"upload"> are already defined.
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141 |
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142 | =head1 METHODS
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143 |
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144 | L<Mojolicious::Validator> inherits all methods from L<Mojo::Base> and
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145 | implements the following new ones.
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146 |
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147 | =head2 add_check
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148 |
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149 | $validator = $validator->add_check(size => sub {...});
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150 |
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151 | Register a validation check.
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152 |
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153 | $validator->add_check(foo => sub {
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154 | my ($v, $name, $value, @args) = @_;
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155 | ...
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156 | return undef;
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157 | });
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158 |
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159 | =head2 add_filter
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160 |
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161 | $validator = $validator->add_filter(trim => sub {...});
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162 |
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163 | Register a new filter.
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164 |
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165 | $validator->add_filter(foo => sub {
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166 | my ($v, $name, $value) = @_;
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167 | ...
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168 | return $value;
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169 | });
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170 |
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171 | =head2 validation
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172 |
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173 | my $v = $validator->validation;
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174 |
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175 | Build L<Mojolicious::Validator::Validation> object to perform validations.
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176 |
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177 | my $v = $validator->validation;
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178 | $v->input({foo => 'bar'});
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179 | $v->required('foo')->size(1, 5);
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180 | say $v->param('foo');
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181 |
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182 | =head1 SEE ALSO
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183 |
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184 | L<Mojolicious>, L<Mojolicious::Guides>, L<https://mojolicious.org>.
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185 |
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186 | =cut
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