htmlfiller

htmlfiller fills in html forms with default values and errors a la Ian Bicking's htmlfill for Python. Currently, it supports input, select, and textarea elements.

Installation

go get github.com/griffy/htmlfiller

How is it used?

We have a few functions, but the most important one is the following:

Fill(html string, vals map[string]string, errors map[string]string) string

It will take as input an html string and two maps: one mapping form elements to values, the other mapping form elements to error messages. htmlfiller assumes that each form element has a corresponding span element with an id attribute of "[form_element_name]_error." Therefore, as a convenience (hopefully), "_error" will be appended to all form elements in the errors map when searching for a span element to inject the error into.

Example Usage:

import "github.com/griffy/htmlfiller"

...

userVals := make(map[string]string)
userVals["city"] = "Boom Town"
userVals["state"] = "Pennsylvania"

errors := make(map[string]string)
errors["city"] = "That is an invalid city. EXTERMINATE!"

html := `<form action="">
            <span class="error_message" id="city_error"></span>
            <input type="text" name="city" />
            <span class="error_message" id="state_error"></span>
            <input type="text" name="state" />
         </form>`

filledHtml := htmlfiller.Fill(html, userVals, errors)

filledHtml should look like so:

<form action="">
    <span class="error_message" id="city_error">That is an invalid city. EXTERMINATE!</span>
    <input type="text" name="city" value="Boom Town"/>
    <span class="error_message" id="state_error"></span>
    <input type="text" name="state" value="Pennsylvania"/>
</form>

License

griffy/htmlfiller

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