\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{przemekgrenda}
\pdfinfo{
  /Title (vue-and-vuex-and-quasar.pdf)
  /Creator (Cheatography)
  /Author (przemekgrenda)
  /Subject (Vue \& Vuex \& Quasar Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Vue \& Vuex \& Quasar Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{przemekgrenda} via \textcolor{DarkBackground}{\uline{cheatography.com/109271/cs/21517/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}przemekgrenda \\
  \uline{cheatography.com/przemekgrenda} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 6th January, 2020.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Import vuex modules from another file}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{New store-file.js:}} \newline  \newline const state = \{\} \newline const mutations = \{\} \newline const actions = \{\} \newline const getters = \{ \newline    getterName: (state) =\textgreater{} \{ \newline       return state.array \newline    \} \newline  \newline export default \{  \newline    namespaced: true \newline    state, \newline    mutations, \newline    actions, \newline    getters \newline \} \newline {\bf{index.js (main store file}} \newline import store from './store-file' \newline  \newline const Store = new Vuex.Store(\{ \newline    modules: \{ \newline          store \newline       \} \newline    \}) \newline {\bf{component.vue:}} \newline  \newline \textless{}script\textgreater{} \newline    import \{ mapGetters \} from 'vuex' \newline  \newline    export default \{ \newline    computed: \{ \newline       \seqsplit{...mapGetters('storeName'}, {[}'getterName'{]}) \newline    \} \newline \textless{}/script\textgreater{}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Getter to retrieve all array}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{const getters = \{ \newline    getterName: (state) =\textgreater{} \{ \newline       return state.array \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Getter returning only certain elements}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{const getters = \{ \newline   tasksTodo: state =\textgreater{} \{ \newline     let tasks = \{\} \newline     \seqsplit{Object.keys(state.tasks).forEach(function} (key) \{ \newline       let task = state.tasks{[}key{]} \newline       console.log('task: ', task) \newline       if (!task.completed) \{ \newline         tasks{[}key{]} = task \newline       \} \newline     \}) \newline  \newline     return tasks; \newline   \} \newline \};} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Deleting using vuex}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{{\bf{ component.vue where the method is triggered }} \newline \textless{}script\textgreater{} \newline     import \{ mapActions \} from 'vuex' \newline      \newline  \newline methods: \{ \newline     \seqsplit{...mapActions('storeName'}, {[}'actionName'{]} \newline         promptToDelete() \{ \newline             this.\$q.dialog(\{ \newline                 title: 'Confirm', \newline                 message: 'Are You sure?', \newline                 persistent: true \}).onOk(() =\textgreater{} \{ \newline                     \seqsplit{this.deleteFood(this.food.id)} \newline                 \}) \newline         \} \newline     \} \newline  \newline  \newline {\bf{ quasar.conf.js }}  \newline plugins: {[} \newline  'Dialog'  \newline {]} \newline  \newline {\bf{store.js}} \newline import Vue from 'vue' \newline  \newline const actions = \{ \newline     deleteFood(\{ commit \}, id) \{ \newline         commit('deleteFood', id)     \newline     \} \newline \} \newline  \newline const mutations = \{ \newline     deleteFood(state, id) \{ \newline         let index = state.foods.findIndex( (food) =\textgreater{} food.id == id) \newline         Vue.delete(state.foods, index) \newline     \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Basic delete/add/edit operations}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{deleteFood: (state, id) =\textgreater{} \{ \newline     let index = \seqsplit{state.foods.findIndex(food} =\textgreater{} food.id == id); \newline     Vue.delete(state.foods, index); \newline   \}, \newline   addFood: (state, food) =\textgreater{} \{ \newline     state.foods.push(food) \newline   \}, \newline   editFood: (state, food) =\textgreater{} \{ \newline     let index = \seqsplit{state.foods.findIndex(elem} =\textgreater{} elem.id == food.id); \newline     console.log(food, index) \newline     Vue.set(state.foods, index, food) \newline   \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Quasar input validation}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\textless{}q-input \newline     :rules="{[} \newline     val =\textgreater{} val.length \textless{} 21 || "Please use maximum of 20 characters" \newline     filled \newline     \seqsplit{v-model="foodToSubmit.name"} \newline     label="Name (e.g. Burger)" \newline     class="col" /\textgreater{}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Validate requirments on submit}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\textless{}q-input \newline     :rules="{[} \newline     val =\textgreater{} val.length \textless{} 21 || "Please use maximum of 20 characters" \newline     {\bf{{\emph{ref="name"}}}} \newline      /\textgreater{} \newline  \newline \textless{}q-btn \newline     {\bf{@click="submitForm"}} \newline     label="Save" \newline     color="primary" \newline     v-close-popup /\textgreater{} \newline  \newline methods: \{ \newline     submitForm() \{ \newline         \seqsplit{this.\$refs.name.validate()} \newline          \newline         if (!this.\$refs.name.hasError)\{ \newline         this.submitFood() \newline         \} \newline     \}, \newline     submitFood() \{  \newline         {[}...{]} \newline     \} \newline  \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Populating fields with data}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{mounted() \{ \newline     if (this.type == "edit") \{ \newline       console.log(this.food); \newline     \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Conditional displaying of tag}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\seqsplit{v-if="Object.keys(tasksTodo).length}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Computed with setter and gettter}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{computed: \{ \newline     ...mapState("tasks", {[}"search"{]}), \newline     searchField: \{ \newline       get() \{ \newline  \newline       \}, \newline       set(value) \{ \newline            \newline       \} \newline     \} \newline   \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}